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.2024.110598
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}
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.2024.110562
Lingyi Liao, Qingsong Mei, Zihao Chen, Yuqi Peng, Yuanyuan Tan
Contact electrification (CE) is known as the charge transfer between two surfaces upon contacting and separating, which has been exploited for the development of triboelectric nanogenerator (TENG). It is generally understood that CE is dependent on the difference of the charge affinity of dissimilar polymers, which is considered as an intrinsic property of polymers, i.e., CE is expected to be minor between identical materials. Here, abnormally evident CE behavior between identical polymers that are subjected to mechanical deformation (MD) to the plastic strain level is observed. Meanwhile, a unique correlation between the dynamic variation of coefficient of friction and friction electrification output is revealed as a result of the MD effect on CE. Analysis demonstrates that the observed MD effect on CE can be attributed to the strain-induced reconstruction of molecular structures of polymers. The present results indicate that CE/TENG is highly prone to the dynamic structure evolutions induced by contact-separation/friction, providing a new perspective to understand the intrinsic correlation between friction and CE behaviors between materials, as well as a potential way to modulate CE by MD.
{"title":"Abnormal contact electrification induced by mechanical deformation between identical materials","authors":"Lingyi Liao, Qingsong Mei, Zihao Chen, Yuqi Peng, Yuanyuan Tan","doi":"10.1016/j.nanoen.2024.110562","DOIUrl":"10.1016/j.nanoen.2024.110562","url":null,"abstract":"<div><div>Contact electrification (CE) is known as the charge transfer between two surfaces upon contacting and separating, which has been exploited for the development of triboelectric nanogenerator (TENG). It is generally understood that CE is dependent on the difference of the charge affinity of dissimilar polymers, which is considered as an intrinsic property of polymers, i.e., CE is expected to be minor between identical materials. Here, abnormally evident CE behavior between identical polymers that are subjected to mechanical deformation (MD) to the plastic strain level is observed. Meanwhile, a unique correlation between the dynamic variation of coefficient of friction and friction electrification output is revealed as a result of the MD effect on CE. Analysis demonstrates that the observed MD effect on CE can be attributed to the strain-induced reconstruction of molecular structures of polymers. The present results indicate that CE/TENG is highly prone to the dynamic structure evolutions induced by contact-separation/friction, providing a new perspective to understand the intrinsic correlation between friction and CE behaviors between materials, as well as a potential way to modulate CE by MD.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110562"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793262","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.2024.110543
Zihao Zhai , Jieyi Chen , Xiang Li , Qingyue Jiang , Jie Bao , Yongqi Wang , Qi Liu , Yufang Li , Xuemei Li
Integration of solar steam production and water-evaporation-induced electricity generation has become a promising strategy to optimize the existing water-energy nexus. However, owing to the different requirement of material design for water management, satisfying solar steam and water-evaporation-induced electricity cogeneration at high efficiency with a facile and controllable material construction still faces a great challenge. Herein, oxygen-doped vertical graphene (OVG), which possesses vertical structure with high light absorption and abundant nanoconfined channels, was directly deposited on macroporous carbon cloth (CC) by plasma-enhanced chemical vapor deposition (PECVD) to induce strong electrokinetic effect and ensure rapid water evaporation. The creative OVG/CC with different conformal graphene skinned was controllably constructed in PECVD system with the change of deposition temperature and the aid of in-situ carbon-dioxide plasma post-treatment. Benefited from the favorable structure prepared at 800 ℃ with intense light absorption on surface and strong electrical interaction at solid-water interface, the OVG/CC-based device presented efficient outputs with an evaporation rate of 2.78 kg m−2 h−1, a voltage of 0.75 V and a current of 2.67 μA in DI water, and with an evaporation rate of 2.69 kg m−2 h−1, a voltage of 0.52 V and a current of 24.11 μA in real seawater respectively, accompanied with the good cycling stability and long-term durability. Moreover, the device could also purify various water sources and drive electron components for practical applications. This work provides a promising CVD strategy for constructing carbon-based composite materials toward efficient clean water and electricity cogeneration.
太阳能蒸汽生产和水蒸发发电的整合已成为优化现有水能关系的一种有前途的策略。然而，由于水管理对材料设计的不同要求，用一种易于控制的材料结构来满足太阳能蒸汽和水蒸发发电的高效热电联产仍然面临着很大的挑战。本文采用等离子体增强化学气相沉积（PECVD）技术将垂直结构、高光吸收和丰富纳米限制通道的氧掺杂垂直石墨烯（OVG）直接沉积在大孔碳布（CC）上，以诱导强电动力学效应并保证水分快速蒸发。通过改变沉积温度和原位二氧化碳等离子后处理，在PECVD系统中可控地构建了具有不同适形石墨烯表皮的创新型OVG/CC。基于OVG/ cc的器件在800℃下制备的良好结构，具有表面强光吸收和固水界面强电相互作用，在去离子水中蒸发量为2.78 kg m-2 h-1，电压为0.75 V，电流为2.67 μA，在真实海水中蒸发量为2.69 kg m-2 h-1，电压为0.52 V，电流为24.11 μA。具有良好的循环稳定性和长期耐用性。此外，该装置还可以净化各种水源和驱动电子元件，具有实际应用价值。这项工作为构建高效清洁水和电热电联产的碳基复合材料提供了一种有前途的CVD策略。
{"title":"PECVD-derived oxygen-doped vertical graphene-skinned carbon cloth toward efficient solar steam and water-evaporation-induced electricity cogeneration","authors":"Zihao Zhai , Jieyi Chen , Xiang Li , Qingyue Jiang , Jie Bao , Yongqi Wang , Qi Liu , Yufang Li , Xuemei Li","doi":"10.1016/j.nanoen.2024.110543","DOIUrl":"10.1016/j.nanoen.2024.110543","url":null,"abstract":"<div><div>Integration of solar steam production and water-evaporation-induced electricity generation has become a promising strategy to optimize the existing water-energy nexus. However, owing to the different requirement of material design for water management, satisfying solar steam and water-evaporation-induced electricity cogeneration at high efficiency with a facile and controllable material construction still faces a great challenge. Herein, oxygen-doped vertical graphene (OVG), which possesses vertical structure with high light absorption and abundant nanoconfined channels, was directly deposited on macroporous carbon cloth (CC) by plasma-enhanced chemical vapor deposition (PECVD) to induce strong electrokinetic effect and ensure rapid water evaporation. The creative OVG/CC with different conformal graphene skinned was controllably constructed in PECVD system with the change of deposition temperature and the aid of in-situ carbon-dioxide plasma post-treatment. Benefited from the favorable structure prepared at 800 ℃ with intense light absorption on surface and strong electrical interaction at solid-water interface, the OVG/CC-based device presented efficient outputs with an evaporation rate of 2.78 kg m<sup>−2</sup> h<sup>−1</sup>, a voltage of 0.75 V and a current of 2.67 μA in DI water, and with an evaporation rate of 2.69 kg m<sup>−2</sup> h<sup>−1</sup>, a voltage of 0.52 V and a current of 24.11 μA in real seawater respectively, accompanied with the good cycling stability and long-term durability. Moreover, the device could also purify various water sources and drive electron components for practical applications. This work provides a promising CVD strategy for constructing carbon-based composite materials toward efficient clean water and electricity cogeneration.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110543"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793263","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.2024.110561
Zhenhui Jin , Yang Fu , Hongfa Zhao , Wenbo Ding , Yi-Cheng Wang
Humidity can significantly impact the quality of food. In the case of low-moisture foods – a category characterized by its low water activity – humidity can cause undesirable physical and chemical changes. In this study, we developed intelligent packaging for such foods based around versatile triboelectric nanogenerators (TENGs) that incorporated triboelectric layers fabricated from a carbohydrate polymer, pectin, and glycerol. We found that such TENGs generated their highest electrical output, making them suitable for use as energy harvesters, when the glycerol content of such a layer was 70 % of its pectin content. We further demonstrated that such energy harvesters could successfully convert mechanical energy into sufficient electricity to power small electronic devices such as a hygrometer and a calculator. However, when the pectin-containing triboelectric layer’s glycerol content was reduced to 50 % of its pectin content, the resulting TENG-based sensors exhibited distinctive behaviors during sorption and desorption processes. Those behaviors were leveraged to create a triboelectric food-quality sensor (TFQS) that we integrated into food packaging for food-quality monitoring. Testing of the TFQS indicated that it could effectively measure a key quality attribute, hardness, of our target low-moisture food, crackers. These findings illustrated not only how altering their compositions can endow triboelectric devices with multifunctionality, but also such devices’ potential to help reduce food waste by providing consumers with accurate, dynamic quality information. As such, they could address a core limitation of the current pre-printed food-date label system, which does not account for storage conditions.
{"title":"Carbohydrate polymer-based triboelectric devices for energy harvesting and intelligent packaging for food-quality monitoring","authors":"Zhenhui Jin , Yang Fu , Hongfa Zhao , Wenbo Ding , Yi-Cheng Wang","doi":"10.1016/j.nanoen.2024.110561","DOIUrl":"10.1016/j.nanoen.2024.110561","url":null,"abstract":"<div><div>Humidity can significantly impact the quality of food. In the case of low-moisture foods – a category characterized by its low water activity – humidity can cause undesirable physical and chemical changes. In this study, we developed intelligent packaging for such foods based around versatile triboelectric nanogenerators (TENGs) that incorporated triboelectric layers fabricated from a carbohydrate polymer, pectin, and glycerol. We found that such TENGs generated their highest electrical output, making them suitable for use as energy harvesters, when the glycerol content of such a layer was 70 % of its pectin content. We further demonstrated that such energy harvesters could successfully convert mechanical energy into sufficient electricity to power small electronic devices such as a hygrometer and a calculator. However, when the pectin-containing triboelectric layer’s glycerol content was reduced to 50 % of its pectin content, the resulting TENG-based sensors exhibited distinctive behaviors during sorption and desorption processes. Those behaviors were leveraged to create a triboelectric food-quality sensor (TFQS) that we integrated into food packaging for food-quality monitoring. Testing of the TFQS indicated that it could effectively measure a key quality attribute, hardness, of our target low-moisture food, crackers. These findings illustrated not only how altering their compositions can endow triboelectric devices with multifunctionality, but also such devices’ potential to help reduce food waste by providing consumers with accurate, dynamic quality information. As such, they could address a core limitation of the current pre-printed food-date label system, which does not account for storage conditions.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110561"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797501","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}
Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110589
Pan An , Yujia Lv , Hao Xiu , Jingyi Chen , Panxing Ren , Yuan Bai , Chuanchao Tao , Chang Ao , Chunhao Yang , Jiaxing Wu , Dan Luo , Yajun Wang
Photoelectrocatalysis, an advanced oxidation method that combines photocatalysis and electrochemistry, typically requires substantial external energy. This study introduces a hybrid approach that combines efficient semiconductor light-harvesting with the superior energy collection and conversion capabilities of a self-powered system. We enhanced visible light absorption in a Cu2O/Bi2MoO6 photoanode using a type-II heterojunction structure. A triboelectric-electromagnetic nanogenerator (TENG-EMG) acts as a self-powered energy source, promoting electron and hole separation during the photoelectrocatalytic process. The empirical results show that under light irradiation, electrons move from Cu2O to Bi2MoO6, whereas holes move in opposite directions. As the TENG-EMG rotational speed increased from 100 to 400 r/min, the tetracycline hydrochloride (TCH) degradation rate of the TENG-EMG-Cu2O/Bi2MoO6 system increased from 49.2 % to 92.4 %. The use of the TENG-EMGs significantly enhanced the efficacy of organic wastewater treatment. This paper presents a new, eco-friendly, and cost-effective method for wastewater treatment that combines self-powered advanced oxidation technology with a TENG-EMG and a heterojunction photoanode.
{"title":"Triboelectric-electromagnetic nanogenerator coupled type-II heterojunction enhancing photoelectrocatalysis for wastewater degradation","authors":"Pan An , Yujia Lv , Hao Xiu , Jingyi Chen , Panxing Ren , Yuan Bai , Chuanchao Tao , Chang Ao , Chunhao Yang , Jiaxing Wu , Dan Luo , Yajun Wang","doi":"10.1016/j.nanoen.2024.110589","DOIUrl":"10.1016/j.nanoen.2024.110589","url":null,"abstract":"<div><div>Photoelectrocatalysis, an advanced oxidation method that combines photocatalysis and electrochemistry, typically requires substantial external energy. This study introduces a hybrid approach that combines efficient semiconductor light-harvesting with the superior energy collection and conversion capabilities of a self-powered system. We enhanced visible light absorption in a Cu<sub>2</sub>O/Bi<sub>2</sub>MoO<sub>6</sub> photoanode using a type-II heterojunction structure. A triboelectric-electromagnetic nanogenerator (TENG-EMG) acts as a self-powered energy source, promoting electron and hole separation during the photoelectrocatalytic process. The empirical results show that under light irradiation, electrons move from Cu<sub>2</sub>O to Bi<sub>2</sub>MoO<sub>6</sub>, whereas holes move in opposite directions. As the TENG-EMG rotational speed increased from 100 to 400 r/min, the tetracycline hydrochloride (TCH) degradation rate of the TENG-EMG-Cu<sub>2</sub>O/Bi<sub>2</sub>MoO<sub>6</sub> system increased from 49.2 % to 92.4 %. The use of the TENG-EMGs significantly enhanced the efficacy of organic wastewater treatment. This paper presents a new, eco-friendly, and cost-effective method for wastewater treatment that combines self-powered advanced oxidation technology with a TENG-EMG and a heterojunction photoanode.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110589"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823094","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.2024.110535
Fobao Huang , Yong Chao , Qingyuan Yang , Minjiang Dan , Qiao Chen , Gongwei Hu , Wei Huang
Piezotronic strain sensors that convert mechanical deformation into electrical signals are becoming increasingly important in artificial intelligence, human-machine interfaces, and robotic technologies. These applications require piezotronic sensor with the integration of high-sensitivity, high-stability, and versatile-functionality, which are limited by the single conductivity mechanism. In this study, we propose a piezotronic strain sensor with uniform and switchable sensitivity in a short channel field-effect junction. The strain-induced piezo-potential can be used to switch the conductivity between Schottky and Ohmic regime, leading to an exponential (linear) piezotronic modulation in Schottky (Ohmic) conductivity elucidated by Fermi occupation theory. Local gauge factor reaches a high value of 1330 in Schottky conductivity and a low value of 320 in Ohmic regime, yielding a higher ratio of 4.2. The stable conductivity makes these high and low sensitivity uniform over a wide strain range. This study gives a deep insight into the correlation of strain-sensing performance and conductive mechanism in piezotronic sensors, and offers a new avenue to develop multifunctional and high-sensitivity sensors.
{"title":"Piezotronic strain sensor with uniform and switchable sensitivity by conductivity transformation","authors":"Fobao Huang , Yong Chao , Qingyuan Yang , Minjiang Dan , Qiao Chen , Gongwei Hu , Wei Huang","doi":"10.1016/j.nanoen.2024.110535","DOIUrl":"10.1016/j.nanoen.2024.110535","url":null,"abstract":"<div><div>Piezotronic strain sensors that convert mechanical deformation into electrical signals are becoming increasingly important in artificial intelligence, human-machine interfaces, and robotic technologies. These applications require piezotronic sensor with the integration of high-sensitivity, high-stability, and versatile-functionality, which are limited by the single conductivity mechanism. In this study, we propose a piezotronic strain sensor with uniform and switchable sensitivity in a short channel field-effect junction. The strain-induced piezo-potential can be used to switch the conductivity between Schottky and Ohmic regime, leading to an exponential (linear) piezotronic modulation in Schottky (Ohmic) conductivity elucidated by Fermi occupation theory. Local gauge factor reaches a high value of 1330 in Schottky conductivity and a low value of 320 in Ohmic regime, yielding a higher ratio of 4.2. The stable conductivity makes these high and low sensitivity uniform over a wide strain range. This study gives a deep insight into the correlation of strain-sensing performance and conductive mechanism in piezotronic sensors, and offers a new avenue to develop multifunctional and high-sensitivity sensors.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110535"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777206","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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