Wound healing remains one of the most challenging issues in medicine; thus, innovative approaches are required to enhance this process. Herein, we designed a dual-side and flexible triboelectric nanogenerator (TENG) that could convert mechanical shocks into pulsatile electrical stimulations; these were then applied at the site of the wound with the use of a biocompatible and antibacterial skin patch due to the use of chitosan, polyvinyl alcohol, and zinc oxide nanoparticles (ZnO NPs). The fabricated TENG exhibited an average open-circuit output voltage of 57 ± 5 V and an average short-circuit output current of 2.2 ± 0.3 μA. The in vitro antibacterial activity of the hydrogels was proportional to a higher concentration of ZnO NPs; meanwhile, cell viability showed an inverse relationship. Based on these findings, the most suitable concentration of ZnO NPs used for the skin patch applied to the TENG was determined to be 0.4 % W/V. In vivo experiments on rats demonstrated that slow electrical stimulations from the TENG enhance wound healing more effectively than fast electrical stimulations. Histological analyses further validated these findings. Generally, results show that the electrical stimulation provided by the TENG under the biocompatible skin adhesive is sufficient to protect the wound environment against pathogenic attacks and accelerate wound healing.
{"title":"Dual-sided and flexible triboelectric nanogenerator-based hydrogel skin patch for promoting wound healing","authors":"Moein Ziyazadeh , Mohaddeseh Vafaiee , Raheleh Mohammadpour , Hamide Ehtesabi","doi":"10.1016/j.nanoen.2024.110558","DOIUrl":"10.1016/j.nanoen.2024.110558","url":null,"abstract":"<div><div>Wound healing remains one of the most challenging issues in medicine; thus, innovative approaches are required to enhance this process. Herein, we designed a dual-side and flexible triboelectric nanogenerator (TENG) that could convert mechanical shocks into pulsatile electrical stimulations; these were then applied at the site of the wound with the use of a biocompatible and antibacterial skin patch due to the use of chitosan, polyvinyl alcohol, and zinc oxide nanoparticles (ZnO NPs). The fabricated TENG exhibited an average open-circuit output voltage of 57 ± 5 V and an average short-circuit output current of 2.2 ± 0.3 μA. The in vitro antibacterial activity of the hydrogels was proportional to a higher concentration of ZnO NPs; meanwhile, cell viability showed an inverse relationship. Based on these findings, the most suitable concentration of ZnO NPs used for the skin patch applied to the TENG was determined to be 0.4 % W/V. In vivo experiments on rats demonstrated that slow electrical stimulations from the TENG enhance wound healing more effectively than fast electrical stimulations. Histological analyses further validated these findings. Generally, results show that the electrical stimulation provided by the TENG under the biocompatible skin adhesive is sufficient to protect the wound environment against pathogenic attacks and accelerate wound healing.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110558"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Addressing the critical demand for high-precision, highly integrated, and durable rotational speed sensors capable of withstanding complex operating conditions in rotating machinery, we propose an innovative ball vibration based triboelectric nanogenerator (VS-TENG) for rotational monitoring of rotating machinery, and systematically construct the motion control equation system of VS-TENG. The VS-TENG innovatively harnesses the rotational energy of machinery to evoke vibrations within its internal spheres, thereby activating the device to generate electrical signals. The integration of variational mode decomposition (VMD) enables effective filtration of noise and non-essential modal components, facilitating the isolation and analysis of triboelectric signature signals. By monitoring the voltage frequency's variation directly correlated to rotational speed, the sensor achieves both accurate measurement and real-time monitoring. The proposal of VS-TENG overcomes the problem of traditional sensors being prone to wear and accuracy degradation under high-speed rotation conditions and demonstrates significant durability and high-precision characteristics. Experimental validation across a wide rotational speed range from 50 to 1600 rpm underscores its performance, with a detection error rate consistently below 0.505 %. Notably, even after sustained operation for 50 h, the VS-TENG maintains a stable electrical output, underscoring its long-term reliability. This achievement is expected to provide stronger technical support for the intelligent and efficient operation and maintenance of rotating machinery.
{"title":"Self-powered sensor for rotating speed monitoring of rotating machinery and its application in intelligent toolholder of CNC machine tools","authors":"Jianfeng Tang , Yong Hu , Mingxu Xu , Xinghua Zhou , Dechao Wang , Yinglong Shang , Dongshen Huyan , Jianhai Zhang","doi":"10.1016/j.nanoen.2024.110573","DOIUrl":"10.1016/j.nanoen.2024.110573","url":null,"abstract":"<div><div>Addressing the critical demand for high-precision, highly integrated, and durable rotational speed sensors capable of withstanding complex operating conditions in rotating machinery, we propose an innovative ball vibration based triboelectric nanogenerator (VS-TENG) for rotational monitoring of rotating machinery, and systematically construct the motion control equation system of VS-TENG. The VS-TENG innovatively harnesses the rotational energy of machinery to evoke vibrations within its internal spheres, thereby activating the device to generate electrical signals. The integration of variational mode decomposition (VMD) enables effective filtration of noise and non-essential modal components, facilitating the isolation and analysis of triboelectric signature signals. By monitoring the voltage frequency's variation directly correlated to rotational speed, the sensor achieves both accurate measurement and real-time monitoring. The proposal of VS-TENG overcomes the problem of traditional sensors being prone to wear and accuracy degradation under high-speed rotation conditions and demonstrates significant durability and high-precision characteristics. Experimental validation across a wide rotational speed range from 50 to 1600 rpm underscores its performance, with a detection error rate consistently below 0.505 %. Notably, even after sustained operation for 50 h, the VS-TENG maintains a stable electrical output, underscoring its long-term reliability. This achievement is expected to provide stronger technical support for the intelligent and efficient operation and maintenance of rotating machinery.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110573"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110554
Amirjalal Jalali , Araz Rajabi-Abhari , Haonan Zhang , Tanmay Gupta , Otavio Augusto Titton Dias , Md Akibul Islam , Tobin Filleter , Ning Yan , Mohini Sain , Chul B. Park
This study explores the novel realm of foam 3D-printing, a convergence of foaming and 3D-printing techniques, with profound implications for multifunctional stretchable electronics. Through scalable in situ foam printing, lightweight and stretchable foamed polyvinylidene fluoride (PVDF)/graphene nanocomposites were successfully fabricated. By incorporating varying percentages (2, 3, 5, and 7 wt%) of graphene into PVDF, alongside a 3 wt% foaming agent for foamed 3D-printing filaments, a diverse range of filaments were fabricated. Next, employing fused filament fabrication (FFF), 3D-printed PVDF nanocomposites and nanocomposites foams were produced. Both shear and elongational rheological tests, respectively, corroborated that the incorporation of a foaming agent and graphene amplified the shear-thinning behavior and instigated strain hardening in the PVDF nanocomposite foam, rendering them viable options for foam 3D-printing. The resulting materials exhibited promising electrical and thermal conductivity attributes, as well as effective electromagnetic interference (EMI) shielding properties. The additional nanofiller content significantly augmented both electrical and thermal conductivity, further enhanced by the introduction of a cellular structure. Notably, foamed 3D-printed PVDF nanocomposites containing 7 wt% of graphene demonstrated an EMI shielding effectiveness (SE) of 36 dB distinguished by minimal reflectivity and predominant absorption characteristics. X-ray diffraction (XRD) analysis indicated that the in situ foam 3D-printing facilitates the formation of the β-phase. The printed specimens were deployed as the tribonegative element in the Triboelectric Nanogenerator (TENG) system. The fabricated TENG displayed notable efficiency, as evidenced by the foamed 3D-printed PVDF, which generated an output voltage of 270 V and a current of 5 μA, successfully illuminating 80 Light Emitting Diode (LED) lights. Meanwhile, the 3D-printed nanocomposite foams with 3 wt% nanofiller exhibited superior performance, achieving an output voltage of 550 V and a current of 11 μA. This investigation underscores the potential of the in situ foam 3D-printing for the development of advanced lightweight and flexible energy storage devices.
{"title":"Cultivation of In situ foam 3D-printing: Lightweight and flexible triboelectric nanogenerators employing polyvinylidene fluoride/graphene nanocomposite foams with superior EMI shielding and thermal conductivity","authors":"Amirjalal Jalali , Araz Rajabi-Abhari , Haonan Zhang , Tanmay Gupta , Otavio Augusto Titton Dias , Md Akibul Islam , Tobin Filleter , Ning Yan , Mohini Sain , Chul B. Park","doi":"10.1016/j.nanoen.2024.110554","DOIUrl":"10.1016/j.nanoen.2024.110554","url":null,"abstract":"<div><div>This study explores the novel realm of foam 3D-printing, a convergence of foaming and 3D-printing techniques, with profound implications for multifunctional stretchable electronics. Through scalable <em>in situ</em> foam printing, lightweight and stretchable foamed polyvinylidene fluoride (PVDF)/graphene nanocomposites were successfully fabricated. By incorporating varying percentages (2, 3, 5, and 7 wt%) of graphene into PVDF, alongside a 3 wt% foaming agent for foamed 3D-printing filaments, a diverse range of filaments were fabricated. Next, employing fused filament fabrication (FFF), 3D-printed PVDF nanocomposites and nanocomposites foams were produced. Both shear and elongational rheological tests, respectively, corroborated that the incorporation of a foaming agent and graphene amplified the shear-thinning behavior and instigated strain hardening in the PVDF nanocomposite foam, rendering them viable options for foam 3D-printing. The resulting materials exhibited promising electrical and thermal conductivity attributes, as well as effective electromagnetic interference (EMI) shielding properties. The additional nanofiller content significantly augmented both electrical and thermal conductivity, further enhanced by the introduction of a cellular structure. Notably, foamed 3D-printed PVDF nanocomposites containing 7 wt% of graphene demonstrated an EMI shielding effectiveness (SE) of 36 dB distinguished by minimal reflectivity and predominant absorption characteristics. X-ray diffraction (XRD) analysis indicated that the <em>in situ</em> foam 3D-printing facilitates the formation of the β-phase. The printed specimens were deployed as the tribonegative element in the Triboelectric Nanogenerator (TENG) system. The fabricated TENG displayed notable efficiency, as evidenced by the foamed 3D-printed PVDF, which generated an output voltage of 270 V and a current of 5 μA, successfully illuminating 80 Light Emitting Diode (LED) lights. Meanwhile, the 3D-printed nanocomposite foams with 3 wt% nanofiller exhibited superior performance, achieving an output voltage of 550 V and a current of 11 μA. This investigation underscores the potential of the <em>in situ</em> foam 3D-printing for the development of advanced lightweight and flexible energy storage devices.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110554"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The underlying principle of droplet energy generation, which involves contact electrification and droplet-based electricity, has gained significant traction in converting raindrop energy in recent years. The efficiency of power harvesting is highly dependent on the contact area, requiring the droplet to spread maximally across the device's surface. However, other droplet dynamics, such as sliding and dripping, have been underutilized in previous research. In this work, we introduce a novel design that leverages the field effect to enhance electric double layer for high output droplet energy harvester, capturing both negative and positive charges to generate electricity. Additionally, electrons produced during the contact electrification process can be stored on a floating electrode within the device, creating a high electrical potential that further enhances electricity generation through the electric double layer capacitance at the water-metal interface. Remarkably, without the need for pre-charging or grounding the top electrode, this field effect enhanced droplet energy harvesting can achieve voltages exceeding 430 V and currents over 1 mA using a 60 μL tap-water droplet. Moreover, our device demonstrates continuous energy harvesting during sliding motion, highlighting its potential for large-scale applications, such as in panel configurations. The novel mechanism and technology presented in this work offer significant advancements in the understanding and practical implementation of droplet energy harvesting.
{"title":"Field effect enhanced electric double layer for high-output droplet energy harvester","authors":"Dinh Cong Nguyen , Minh Chien Nguyen , Duy Tho Pham , Zhengbing Ding , Seongmin Na , Hakjeong Kim , Kyunwho Choi , Dukhyun Choi","doi":"10.1016/j.nanoen.2024.110560","DOIUrl":"10.1016/j.nanoen.2024.110560","url":null,"abstract":"<div><div>The underlying principle of droplet energy generation, which involves contact electrification and droplet-based electricity, has gained significant traction in converting raindrop energy in recent years. The efficiency of power harvesting is highly dependent on the contact area, requiring the droplet to spread maximally across the device's surface. However, other droplet dynamics, such as sliding and dripping, have been underutilized in previous research. In this work, we introduce a novel design that leverages the field effect to enhance electric double layer for high output droplet energy harvester, capturing both negative and positive charges to generate electricity. Additionally, electrons produced during the contact electrification process can be stored on a floating electrode within the device, creating a high electrical potential that further enhances electricity generation through the electric double layer capacitance at the water-metal interface. Remarkably, without the need for pre-charging or grounding the top electrode, this field effect enhanced droplet energy harvesting can achieve voltages exceeding 430 V and currents over 1 mA using a 60 μL tap-water droplet. Moreover, our device demonstrates continuous energy harvesting during sliding motion, highlighting its potential for large-scale applications, such as in panel configurations. The novel mechanism and technology presented in this work offer significant advancements in the understanding and practical implementation of droplet energy harvesting.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110560"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110591
Lei Yang , Jiachang Liang , Guilei Liu, Youkai Jia, Shuai Yang, Baotong Li, Yanjie Guo
The human hand is one of the most adaptable and versatile organs due to its complex anatomy and functionality. However, this very adaptability makes the hand highly susceptible to injury, highlighting the need for effective hand rehabilitation programs. Current rehabilitation methods are often limited by location and lack of personalized approaches, necessitating significant improvement. In this study, a fun and engaging hand rehabilitation training game is developed. A gesture recognition sensor based on non-contact triboelectric nanogenerator is designed to enhance the overall coordination and strength of the arm, wrist, and hand. Additionally, a handwriting signal recognition sensor based on contact triboelectric nanogenerator is designed to strengthen and improve finger coordination. The gesture recognition sensor, integrated with deep learning algorithms, accurately identifies six directional movements with 97.33 % accuracy, while the handwriting signal recognition sensor successfully identifies 26 uppercase English letters with 99.5 % accuracy. Utilizing these sensors, a game simulating a supermarket purchase scenario is created, providing a flexible and convenient approach to hand rehabilitation. This system offers a potential solution to improve the design of hand rehabilitation products, making the training process more enjoyable and accessible.
{"title":"Hand rehabilitation training system integrating non-contact and contact triboelectric nanogenerators for enhanced gesture and handwriting recognition","authors":"Lei Yang , Jiachang Liang , Guilei Liu, Youkai Jia, Shuai Yang, Baotong Li, Yanjie Guo","doi":"10.1016/j.nanoen.2024.110591","DOIUrl":"10.1016/j.nanoen.2024.110591","url":null,"abstract":"<div><div>The human hand is one of the most adaptable and versatile organs due to its complex anatomy and functionality. However, this very adaptability makes the hand highly susceptible to injury, highlighting the need for effective hand rehabilitation programs. Current rehabilitation methods are often limited by location and lack of personalized approaches, necessitating significant improvement. In this study, a fun and engaging hand rehabilitation training game is developed. A gesture recognition sensor based on non-contact triboelectric nanogenerator is designed to enhance the overall coordination and strength of the arm, wrist, and hand. Additionally, a handwriting signal recognition sensor based on contact triboelectric nanogenerator is designed to strengthen and improve finger coordination. The gesture recognition sensor, integrated with deep learning algorithms, accurately identifies six directional movements with 97.33 % accuracy, while the handwriting signal recognition sensor successfully identifies 26 uppercase English letters with 99.5 % accuracy. Utilizing these sensors, a game simulating a supermarket purchase scenario is created, providing a flexible and convenient approach to hand rehabilitation. This system offers a potential solution to improve the design of hand rehabilitation products, making the training process more enjoyable and accessible.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110591"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110547
Qixin Zhuang , Ke Wang , Haiyun Li , Zhenyu Liu , Yanyan Li , Yingguo Yang , Qianqian Lin , Cheng Gong , Cong Zhang , Zhihao Guo , Saif M.H. Qaid , Iván Mora-Seró , Zhiyuan Xu , Zhigang Zang , Huaxin Wang
Perovskite solar cells' lead toxicity and leakage are key obstacles to commercialization. Here, we introduce a diazapolyoxamacrobicycle structure of cryptand 222 (C222) into the perovskite precursor solution to obtain high-quality films. The abundant diazapolyoxamacrobicycles in C222 can effectively coordinate with Pb2 + and form hydrogen bonds with FA+ in perovskite, thereby reducing the defect density, suppressing non-radiative recombination, and mitigating lead leakage. As a result, C222-based PSCs achieve a remarkable power conversion efficiency (PCE) of 25.34 % (0.1 cm2) and 23.78 % at a larger area (1.0 cm2), retain over 90 % of its initial PCE after 1500 h of continuous maximum power point tracking (MPPT) under simulated AM 1.5 illumination. Furthermore, the adsorption equilibrium capacity (qe) of C222 is 23.58 mg/g, with an adsorption rate constant (k2) of 0.035 g (mg/min), indicating a lower adsorption potential barrier for anchoring sites, causing an effectively prevention of lead leakage.
钙钛矿太阳能电池的铅毒性和泄漏是商业化的主要障碍。在此，我们在钙钛矿前驱体溶液中引入了一种重氮多氧大环结构的密码体222 (C222)，以获得高质量的薄膜。C222中丰富的重氮多氧大环能与Pb2+有效配位，与钙钛矿中的FA+形成氢键，从而降低缺陷密度，抑制非辐射复合，减轻铅泄漏。结果表明，基于c222的PSCs的功率转换效率（PCE）达到了25.34% (0.1 cm2)，在更大的面积（1.0 cm2）下达到23.78%，在模拟am1.5照明下连续最大功率点跟踪（MPPT） 1500小时后，PCE仍保持在初始PCE的90%以上。C222吸附平衡容量（qe）为23.58 mg/g，吸附速率常数（k2）为0.035 g (mg/min)，表明其对锚定位点具有较低的吸附势垒，可有效防止铅泄漏。
{"title":"Supramolecular host-guest complexation creates a “lead cage” for efficient and eco-friendly perovskite solar cells","authors":"Qixin Zhuang , Ke Wang , Haiyun Li , Zhenyu Liu , Yanyan Li , Yingguo Yang , Qianqian Lin , Cheng Gong , Cong Zhang , Zhihao Guo , Saif M.H. Qaid , Iván Mora-Seró , Zhiyuan Xu , Zhigang Zang , Huaxin Wang","doi":"10.1016/j.nanoen.2024.110547","DOIUrl":"10.1016/j.nanoen.2024.110547","url":null,"abstract":"<div><div>Perovskite solar cells' lead toxicity and leakage are key obstacles to commercialization. Here, we introduce a diazapolyoxamacrobicycle structure of cryptand 222 (C222) into the perovskite precursor solution to obtain high-quality films. The abundant diazapolyoxamacrobicycles in C222 can effectively coordinate with Pb<sup>2 +</sup> and form hydrogen bonds with FA<sup>+</sup> in perovskite, thereby reducing the defect density, suppressing non-radiative recombination, and mitigating lead leakage. As a result, C222-based PSCs achieve a remarkable power conversion efficiency (PCE) of 25.34 % (0.1 cm<sup>2</sup>) and 23.78 % at a larger area (1.0 cm<sup>2</sup>), retain over 90 % of its initial PCE after 1500 h of continuous maximum power point tracking (MPPT) under simulated AM 1.5 illumination. Furthermore, the adsorption equilibrium capacity (qe) of C222 is 23.58 mg/g, with an adsorption rate constant (<em>k</em><sub>2</sub>) of 0.035 g (mg/min), indicating a lower adsorption potential barrier for anchoring sites, causing an effectively prevention of lead leakage.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110547"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110592
Ru Guo , Jialu Yuan , Qiong Liu , Hang Luo , Dou Zhang
Exploring cost-effective and environment-friendly technology for H2O2 production is of great urgency toward net zero carbon emission. Hybridized mechanical and solar energy‑driven self‑powered H2O2 production is a promising alternative to the traditional anthraquinone oxidation process to address high energy consumption, substantial organic waste generation, and toxic by-products. However, the low conversion efficiency of mechanical energy and the low-activity catalytic material are two main challenges of this method for high reaction efficiency. In this work, we construct a unique hybrid H2O2 production system, which is composed of a rotatory disc-shaped triboelectric nanogenerator (TENG) converting mechanical energy into electrical energy and a catalytic reaction unit integrated with TiO2-BaTiO3-Ag nanowire array (TOBT-Ag) as photoanode. Particularly, an optimal matching design of the transformer in the management circuit boosts TENG's output current from 0.4 mA to 11.3 mA to supply sufficient electricity power for the electrocatalysis module. Moreover, the ultrafine Ag particle loaded on the TiO2-BaTiO3 nanowire array is designed to enhance surface-active catalysis sites and lower the interfacial charge transfer barrier. As a result, the self-powered hybrid catalysis system achieves H2O2 production as high as 29.55 μmol/L within 5 min. The successful integration of TENG and nanocatalyst in this work demonstrates an efficient route for the H2O2 green production, providing an excellent paradigm for converting renewable natural energy sources into chemical energy.
探索具有成本效益和环境友好型的 H2O2 生产技术是实现碳净零排放的当务之急。机械能和太阳能混合驱动的自供电 H2O2 生产是传统蒽醌氧化工艺的一种有前途的替代方法，可解决高能耗、产生大量有机废物和有毒副产品等问题。然而，机械能转换效率低和催化材料活性低是该方法实现高反应效率的两大挑战。在这项工作中，我们构建了一种独特的混合 H2O2 生产系统，该系统由将机械能转化为电能的旋转盘形三电纳米发电机（TENG）和以 TiO2-BaTiO3-Ag 纳米线阵列（TOBT-Ag）为光阳极的催化反应单元组成。特别是管理电路中变压器的优化匹配设计，可将 TENG 的输出电流从 0.4 mA 提升至 11.3 mA，从而为电催化模块提供充足的电力。此外，TiO2-BaTiO3 纳米线阵列上负载的超细 Ag 粒子旨在增强表面活性催化位点，降低界面电荷转移障碍。因此，自供电混合催化系统在 5 分钟内就能产生高达 29.55 μmol/L 的 H2O2。这项工作成功地将 TENG 与纳米催化剂结合在一起，为 H2O2 的绿色生产提供了一条简便的途径，为将可再生自然能源转化为化学能提供了一个很好的范例。
{"title":"Hybridized mechanical and solar energy‑driven self‑powered system for high‑efficiency hydrogen peroxide production based on triboelectric nanogenerator","authors":"Ru Guo , Jialu Yuan , Qiong Liu , Hang Luo , Dou Zhang","doi":"10.1016/j.nanoen.2024.110592","DOIUrl":"10.1016/j.nanoen.2024.110592","url":null,"abstract":"<div><div>Exploring cost-effective and environment-friendly technology for H<sub>2</sub>O<sub>2</sub> production is of great urgency toward net zero carbon emission. Hybridized mechanical and solar energy‑driven self‑powered H<sub>2</sub>O<sub>2</sub> production is a promising alternative to the traditional anthraquinone oxidation process to address high energy consumption, substantial organic waste generation, and toxic by-products. However, the low conversion efficiency of mechanical energy and the low-activity catalytic material are two main challenges of this method for high reaction efficiency. In this work, we construct a unique hybrid H<sub>2</sub>O<sub>2</sub> production system, which is composed of a rotatory disc-shaped triboelectric nanogenerator (TENG) converting mechanical energy into electrical energy and a catalytic reaction unit integrated with TiO<sub>2</sub>-BaTiO<sub>3</sub>-Ag nanowire array (TOBT-Ag) as photoanode. Particularly, an optimal matching design of the transformer in the management circuit boosts TENG's output current from 0.4 mA to 11.3 mA to supply sufficient electricity power for the electrocatalysis module. Moreover, the ultrafine Ag particle loaded on the TiO<sub>2</sub>-BaTiO<sub>3</sub> nanowire array is designed to enhance surface-active catalysis sites and lower the interfacial charge transfer barrier. As a result, the self-powered hybrid catalysis system achieves H<sub>2</sub>O<sub>2</sub> production as high as 29.55 μmol/L within 5 min. The successful integration of TENG and nanocatalyst in this work demonstrates an efficient route for the H<sub>2</sub>O<sub>2</sub> green production, providing an excellent paradigm for converting renewable natural energy sources into chemical energy.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110592"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110595
Hongyan Yuan , Jingyi Luan , Quanchao Zhang , Jie Liu , Naiqin Zhao , Wenbin Hu , Cheng Zhong
Nickel–zinc batteries are attracting growing interest due to flame-retardant properties, high discharge voltage and attractive power density. However, the interface side reactions, dendrite growth and redistribution of the highly soluble [Zn(OH)4]2− on the electrode surface result in the degradation of the zinc anode. Herein, an interpenetrating polymer network hydrogel (denoted as IPN–Alg) is prepared by introducing alginate and a stable organic–inorganic interface is successfully constructed in situ on the zinc anode. The high hydrophilicity and zincophilicity of IPN–Alg hydrogel electrolyte provide the inherent advantages in reducing the amounts of free water to suppress the side reactions and being preferentially adsorbed on the zinc anode to construct a water-poor interface. Moreover, due to the topological entanglement in the interpenetrating structures, the IPN–Alg hydrogel electrolyte exhibits excellent mechanical strength. Combining with the in situ formation of the inorganic protective layer of Ca(Zn(OH)3)2·2H2O, the robust organic–inorganic interface layer can effectively inhibit the dendrite growth and reduce the diffusion and redistribution of [Zn(OH)4]2−. Hence, the Zn||Zn symmetric cell and nickel–zinc pouch battery based on IPN–Alg hydrogel electrolyte demonstrate ultralong cycling life of more than 800 h at 2 mA cm−2 and 1100 h (563 cycles) at 4 C, 40% DOD (depth of discharge), respectively.
镍锌电池因其阻燃性能、高放电电压和吸引人的功率密度而受到越来越多的关注。然而，界面副反应、枝晶生长和高可溶性[Zn(OH)4]2−在电极表面的重新分布导致锌阳极的降解。本文通过引入海藻酸盐制备了互穿聚合物网络水凝胶（IPN-Alg），并在锌阳极上原位构建了稳定的有机-无机界面。IPN-Alg水凝胶电解质具有较高的亲水性和亲锌性，在减少游离水的数量以抑制副反应和优先被锌阳极吸收以构建贫水界面方面具有固有的优势。此外，由于互穿结构中的拓扑纠缠，IPN-Alg水凝胶电解质表现出优异的机械强度。结合Ca(Zn(OH)3)2·2H2O无机保护层的原位形成，坚固的有机-无机界面层可以有效地抑制枝晶生长，减少[Zn(OH)4]2−的扩散和重分布。因此，基于IPN-Alg水凝胶电解质的Zn||Zn对称电池和镍锌袋电池在2 mA cm - 2下的超长循环寿命分别超过800 h和1100 h（563次循环），在4℃，40% DOD（放电深度）下。
{"title":"High hydrophilic/zincophilic interpenetrating double-network hydrogel electrolyte constructing stable organic-inorganic anode interface toward nickel–zinc batteries","authors":"Hongyan Yuan , Jingyi Luan , Quanchao Zhang , Jie Liu , Naiqin Zhao , Wenbin Hu , Cheng Zhong","doi":"10.1016/j.nanoen.2024.110595","DOIUrl":"10.1016/j.nanoen.2024.110595","url":null,"abstract":"<div><div>Nickel–zinc batteries are attracting growing interest due to flame-retardant properties, high discharge voltage and attractive power density. However, the interface side reactions, dendrite growth and redistribution of the highly soluble [Zn(OH)<sub>4</sub>]<sup>2−</sup> on the electrode surface result in the degradation of the zinc anode. Herein, an interpenetrating polymer network hydrogel (denoted as IPN–Alg) is prepared by introducing alginate and a stable organic–inorganic interface is successfully constructed in situ on the zinc anode. The high hydrophilicity and zincophilicity of IPN–Alg hydrogel electrolyte provide the inherent advantages in reducing the amounts of free water to suppress the side reactions and being preferentially adsorbed on the zinc anode to construct a water-poor interface. Moreover, due to the topological entanglement in the interpenetrating structures, the IPN–Alg hydrogel electrolyte exhibits excellent mechanical strength. Combining with the in situ formation of the inorganic protective layer of Ca(Zn(OH)<sub>3</sub>)<sub>2</sub>·2H<sub>2</sub>O, the robust organic–inorganic interface layer can effectively inhibit the dendrite growth and reduce the diffusion and redistribution of [Zn(OH)<sub>4</sub>]<sup>2−</sup>. Hence, the Zn||Zn symmetric cell and nickel–zinc pouch battery based on IPN–Alg hydrogel electrolyte demonstrate ultralong cycling life of more than 800 h at 2 mA cm<sup>−2</sup> and 1100 h (563 cycles) at 4 C, 40% DOD (depth of discharge), respectively.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110595"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110580
Jianlin Zhou , Qing Zeng , Yongjing Liu , Yulin Tao , Yaojie Sun , Bo You , Limin Wu
Inspired by the Siamese’s seasonal color change, this study presents a dual-mode Janus film with optical adaptation to enable both radiative cooling and solar heating, designed for spatial thermal management (STM) and year-round energy saving. Using a modified nonsolvent-induced phase separation (NIPS) process, polyethylene glycol (PEG) was applied as a buffering and templating agent to create a macro-micro porous thermoplastic polyurethane (PTPU) structure, achieving over 95 % solar reflectance. Incorporating an MXene/waterborne polyurethane (MXPU) layer via dual-casting enhanced photothermal conversion to 87 % at just 0.2 % MXene content due to secondary absorption, while maintaining high overall emissivity (85 %). Serving as a smart curtain, its low thermal conductivity (19.8 mW/m·K) can further improve STM performance. In cooling mode (summer), the Janus film reflects sunlight and radiates heat outward via infrared emission, achieving a temperature reduction of up to 10.3°C and an energy-saving efficiency of 33.1 %. In heating mode (winter), the film absorbs sunlight and efficiently transfers heat indoors via infrared radiation, resulting in a temperature increase of up to 8.0°C and an energy-saving efficiency of 38.0 %. The innovative design offers an attractive, scalable option for next-generation energy-saving systems in indoor environments, supporting the global shift towards more sustainable and efficient energy use.
{"title":"Bio-inspired dual-mode Janus film with optical adaptation for spatial thermal management and year-round energy saving","authors":"Jianlin Zhou , Qing Zeng , Yongjing Liu , Yulin Tao , Yaojie Sun , Bo You , Limin Wu","doi":"10.1016/j.nanoen.2024.110580","DOIUrl":"10.1016/j.nanoen.2024.110580","url":null,"abstract":"<div><div>Inspired by the Siamese’s seasonal color change, this study presents a dual-mode Janus film with optical adaptation to enable both radiative cooling and solar heating, designed for spatial thermal management (STM) and year-round energy saving. Using a modified nonsolvent-induced phase separation (NIPS) process, polyethylene glycol (PEG) was applied as a buffering and templating agent to create a macro-micro porous thermoplastic polyurethane (PTPU) structure, achieving over 95 % solar reflectance. Incorporating an MXene/waterborne polyurethane (MXPU) layer via dual-casting enhanced photothermal conversion to 87 % at just 0.2 % MXene content due to secondary absorption, while maintaining high overall emissivity (85 %). Serving as a smart curtain, its low thermal conductivity (19.8 mW/m·K) can further improve STM performance. In cooling mode (summer), the Janus film reflects sunlight and radiates heat outward via infrared emission, achieving a temperature reduction of up to 10.3°C and an energy-saving efficiency of 33.1 %. In heating mode (winter), the film absorbs sunlight and efficiently transfers heat indoors via infrared radiation, resulting in a temperature increase of up to 8.0°C and an energy-saving efficiency of 38.0 %. The innovative design offers an attractive, scalable option for next-generation energy-saving systems in indoor environments, supporting the global shift towards more sustainable and efficient energy use.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110580"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110598
Xinru Sun , Yonghui Wu , Zifa Wang , Feng Wang , Yiqiao Zhao , Xiaoyao Wang , Yunchen Zhang , Tianyong Ao , Fangqi Chen , Haiwu Zheng
The adoption of energy harvesting technology enables wireless sensor nodes to be self-powered, thereby significantly enhancing the deployment flexibility of wireless sensor networks (WSNs). While WSNs utilizing triboelectric nanogenerators (TENGs) are recognized for their immense potential, further development is required to ensure their suitability in real-world applications. In this study, we construct a wireless passive intelligent sensing system based on a highly stable TENG and an LC oscillator circuit, where the sensing information is modulated onto the transmitted signal frequency via fixed or variable capacitive modulation. The sensing system consists of three main components: self-powered signal transmitters, a receiving system integrating a single receiver with a signal processing module, and strong electrical applications. This configuration achieves three-layer physical isolation within the power system, thereby enhancing electrical safety. A self-charge-pumping TENG combined with a gas discharge tube switch is deployed to construct the self-powered signal transmitter, aiming to improve the system's output stability. Signals sent by different transmitters with varying frequencies are received and processed by the receiving system, allowing distinct switching operations and enabling centralized control over multiple electrical devices via a single receiving end. This sensing system holds significant potential for widespread applications in smart homes and the Internet of Things within modern commercial and industrial contexts.
{"title":"Wireless passive sensor design based on a highly stable triboelectric nanogenerator for centralized command of diverse electrical appliances","authors":"Xinru Sun , Yonghui Wu , Zifa Wang , Feng Wang , Yiqiao Zhao , Xiaoyao Wang , Yunchen Zhang , Tianyong Ao , Fangqi Chen , Haiwu Zheng","doi":"10.1016/j.nanoen.2024.110598","DOIUrl":"10.1016/j.nanoen.2024.110598","url":null,"abstract":"<div><div>The adoption of energy harvesting technology enables wireless sensor nodes to be self-powered, thereby significantly enhancing the deployment flexibility of wireless sensor networks (WSNs). While WSNs utilizing triboelectric nanogenerators (TENGs) are recognized for their immense potential, further development is required to ensure their suitability in real-world applications. In this study, we construct a wireless passive intelligent sensing system based on a highly stable TENG and an LC oscillator circuit, where the sensing information is modulated onto the transmitted signal frequency via fixed or variable capacitive modulation. The sensing system consists of three main components: self-powered signal transmitters, a receiving system integrating a single receiver with a signal processing module, and strong electrical applications. This configuration achieves three-layer physical isolation within the power system, thereby enhancing electrical safety. A self-charge-pumping TENG combined with a gas discharge tube switch is deployed to construct the self-powered signal transmitter, aiming to improve the system's output stability. Signals sent by different transmitters with varying frequencies are received and processed by the receiving system, allowing distinct switching operations and enabling centralized control over multiple electrical devices via a single receiving end. This sensing system holds significant potential for widespread applications in smart homes and the Internet of Things within modern commercial and industrial contexts.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110598"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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