Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110557
Yiqiang Fu , Haihui Ruan
Given the advantages of rotary motion over linear motion in various aspects, rotary triboelectric nanogenerators (TENGs) can accommodate a wider range of applications than their linear counterparts. However, the practical applications of rotary TENGs face several challenges, among which exceptionally high output impedance, low current/charge transfer, and a lack of efficient modular design are the most prominent. To tackle these issues, we propose a novel modular rotary TENG that achieves an ultra-high peak power density of 293 kW/m² and an ultra-low output impedance of 39 Ω, surpassing all previously reported rotary TENGs. Additionally, it demonstrates excellent power capacity multiplication by adding more modules, enabling rotary TENGs to meet various power requirements. This work unveils the electromechanical properties of the TENG and demonstrates that, although the wear of triboelectric films leads to some performance reduction, the settled peak power density remains record-breaking. Finally, its performance is validated by powering a thermo-hygrometer and several watt-scale LEDs, highlighting its readiness for practical applications.
{"title":"Advanced modular rotary triboelectric nanogenerator: Pushing boundaries in peak power density and impedance reduction","authors":"Yiqiang Fu , Haihui Ruan","doi":"10.1016/j.nanoen.2024.110557","DOIUrl":"10.1016/j.nanoen.2024.110557","url":null,"abstract":"<div><div>Given the advantages of rotary motion over linear motion in various aspects, rotary triboelectric nanogenerators (TENGs) can accommodate a wider range of applications than their linear counterparts. However, the practical applications of rotary TENGs face several challenges, among which exceptionally high output impedance, low current/charge transfer, and a lack of efficient modular design are the most prominent. To tackle these issues, we propose a novel modular rotary TENG that achieves an ultra-high peak power density of 293 kW/m² and an ultra-low output impedance of 39 Ω, surpassing all previously reported rotary TENGs. Additionally, it demonstrates excellent power capacity multiplication by adding more modules, enabling rotary TENGs to meet various power requirements. This work unveils the electromechanical properties of the TENG and demonstrates that, although the wear of triboelectric films leads to some performance reduction, the settled peak power density remains record-breaking. Finally, its performance is validated by powering a thermo-hygrometer and several watt-scale LEDs, highlighting its readiness for practical applications.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110557"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797325","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.2024.110570
Roujuan Li , Xiang Li , Fujian Zhang , Ruishan Zhang , Zhongqiang Zhang , Zhong Lin Wang , Di Wei
Droplet dynamics and liquid-solid (L-S) interactions at elevated temperatures hold significant relevance across various industrial applications, particularly in materials design and aerospace. The Leidenfrost effect, which generates a vapor layer above a critical temperature and effectively prevents direct contact between the droplet and the heated substrate, has been extensively used in surface engineering and thermal protection. Nevertheless, the L-S interfacial properties and charge transfer at high temperatures, especially near the Leidenfrost point (LFP), have been largely neglected in past studies. This study integrated L-S contact electrification (CE) with the Leidenfrost effect, elucidating their intrinsic connection for the first time. Notably, the observation that transferred charge peaks near the LFP not only provided new theoretical insights into the temperature modulation of L-S interface properties but also presented a rapid, objective method for determining the LFP using CE as a probe. This approach holds the potential to enhance thermal management systems, improve heat dissipation in electronic devices, advance surface treatment and self-cleaning technologies, and optimize the efficiency of high-temperature self-powered equipment.
{"title":"Probing Leidenfrost effect via contact electrification","authors":"Roujuan Li , Xiang Li , Fujian Zhang , Ruishan Zhang , Zhongqiang Zhang , Zhong Lin Wang , Di Wei","doi":"10.1016/j.nanoen.2024.110570","DOIUrl":"10.1016/j.nanoen.2024.110570","url":null,"abstract":"<div><div>Droplet dynamics and liquid-solid (L-S) interactions at elevated temperatures hold significant relevance across various industrial applications, particularly in materials design and aerospace. The Leidenfrost effect, which generates a vapor layer above a critical temperature and effectively prevents direct contact between the droplet and the heated substrate, has been extensively used in surface engineering and thermal protection. Nevertheless, the L-S interfacial properties and charge transfer at high temperatures, especially near the Leidenfrost point (LFP), have been largely neglected in past studies. This study integrated L-S contact electrification (CE) with the Leidenfrost effect, elucidating their intrinsic connection for the first time. Notably, the observation that transferred charge peaks near the LFP not only provided new theoretical insights into the temperature modulation of L-S interface properties but also presented a rapid, objective method for determining the LFP using CE as a probe. This approach holds the potential to enhance thermal management systems, improve heat dissipation in electronic devices, advance surface treatment and self-cleaning technologies, and optimize the efficiency of high-temperature self-powered equipment.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110570"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809583","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.2024.110574
Jieru Song , Jialin Meng , Chen Lu , Tianyu Wang , Changjin Wan , Hao Zhu , Qingqing Sun , David Wei Zhang , Lin Chen
Self-powered optoelectronic reservoir computing offers a powerful solution for efficient computation while significantly reducing power consumption, making it an ideal candidate for advanced real-time applications in artificial intelligence and big data analytics. Therefore, exploring the broader application of optoelectronic synaptic devices in optical reservoir computing is of great importance. In this work, we present a self-powered optoelectronic synaptic device designed for optoelectronic reservoir computing. To highlight the device's self-powered capability and nonlinear characteristics, the device features a p-n junction composed of n-type InGaZnO and p-type NiO, enabling it to exhibit synaptic-like properties such as excitatory postsynaptic current, paired-pulse facilitation, and short-term plasticity in response to light pulse stimulation under self-powered conditions. By innovating the data preprocessing methods and inputting signal patterns for optoelectronic reservoir computing, both static and dynamic reservoir computing were successfully realized. In static reservoir computing, the device achieved an image classification accuracy of 95.2 %, while in dynamic reservoir computing, it attained 98.2 % accuracy in spoken signal recognition and 93.5 % in electromyographic signal classification. These results demonstrate the potential of our self-powered optoelectronic synaptic device for broader applications, offering a significant advancement in real-time data processing and adaptive learning systems.
{"title":"Self-powered optoelectronic synaptic device for both static and dynamic reservoir computing","authors":"Jieru Song , Jialin Meng , Chen Lu , Tianyu Wang , Changjin Wan , Hao Zhu , Qingqing Sun , David Wei Zhang , Lin Chen","doi":"10.1016/j.nanoen.2024.110574","DOIUrl":"10.1016/j.nanoen.2024.110574","url":null,"abstract":"<div><div>Self-powered optoelectronic reservoir computing offers a powerful solution for efficient computation while significantly reducing power consumption, making it an ideal candidate for advanced real-time applications in artificial intelligence and big data analytics. Therefore, exploring the broader application of optoelectronic synaptic devices in optical reservoir computing is of great importance. In this work, we present a self-powered optoelectronic synaptic device designed for optoelectronic reservoir computing. To highlight the device's self-powered capability and nonlinear characteristics, the device features a p-n junction composed of n-type InGaZnO and p-type NiO, enabling it to exhibit synaptic-like properties such as excitatory postsynaptic current, paired-pulse facilitation, and short-term plasticity in response to light pulse stimulation under self-powered conditions. By innovating the data preprocessing methods and inputting signal patterns for optoelectronic reservoir computing, both static and dynamic reservoir computing were successfully realized. In static reservoir computing, the device achieved an image classification accuracy of 95.2 %, while in dynamic reservoir computing, it attained 98.2 % accuracy in spoken signal recognition and 93.5 % in electromyographic signal classification. These results demonstrate the potential of our self-powered optoelectronic synaptic device for broader applications, offering a significant advancement in real-time data processing and adaptive learning systems.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110574"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809584","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}
This review paper explores the integration of electromagnetic generation (EMG) and triboelectric nanogeneration (TENG) technologies, emphasizing their classification based on motion types: linear, rotational, and vibration-based. By examining each motion type, we highlight the unique characteristics, advantages, and challenges associated with hybrid EMG-TENG systems. Linear motion devices are particularly effective in harnessing energy from predictable sources, such as ocean waves, demonstrating moderate power outputs suitable for marine applications. Rotational motion devices excel in environments with continuous high-speed motions, achieving higher energy outputs, especially in wind energy systems. In contrast, vibration-based devices capture energy from irregular and low-frequency movements, offering versatility for applications in vehicles and wearable electronics. The review also discusses recent developments in hybrid systems, showcasing advancements in materials and designs that enhance energy capture and efficiency. Despite the progress, challenges remain, including mechanical wear, environmental influences, and the need for precise alignment. By understanding the complementary nature of EMG and TENG technologies, this review highlights how their integration can address the limitations of each technology. EMG excels in capturing high-speed, continuous motion, while TENG is more effective for low-frequency and irregular motion, allowing hybrid systems to efficiently harvest energy in diverse environments. Ultimately, the findings suggest that the strategic integration of EMG and TENG technologies can contribute significantly to sustainable energy solutions, paving the way for innovative developments in energy harvesting.
这篇综述论文探讨了电磁发电（EMG）和三电纳米发电（TENG）技术的整合，强调了它们根据运动类型的分类：线性、旋转和基于振动的运动。通过研究每种运动类型，我们强调了与 EMG-TENG 混合系统相关的独特特征、优势和挑战。线性运动装置在利用海浪等可预测来源的能量方面尤为有效，其适中的功率输出适合海洋应用。旋转运动装置在连续高速运动的环境中表现出色，可实现更高的能量输出，特别是在风能系统中。相比之下，基于振动的设备可从不规则的低频运动中获取能量，为车辆和可穿戴电子设备的应用提供了多功能性。综述还讨论了混合动力系统的最新发展，展示了可提高能量捕获和效率的材料和设计方面的进步。尽管取得了进展，但挑战依然存在，包括机械磨损、环境影响和精确对准的需要。通过了解 EMG 和 TENG 技术的互补性，本综述强调了它们的整合如何能够解决每种技术的局限性。EMG 擅长捕捉高速、连续的运动，而 TENG 则对低频和不规则运动更有效，从而使混合系统能够在各种环境中有效地采集能量。最终，研究结果表明，EMG 和 TENG 技术的战略整合可为可持续能源解决方案做出重大贡献，为能源采集领域的创新发展铺平道路。
{"title":"Exploring the synergy of EMG and TENG in motion based hybrid energy harvesting","authors":"Fuzhen Xing, Guoqiang Tang, Hao Wang, Man Wang, Mengwei Wu, Minyi Xu","doi":"10.1016/j.nanoen.2024.110584","DOIUrl":"10.1016/j.nanoen.2024.110584","url":null,"abstract":"<div><div>This review paper explores the integration of electromagnetic generation (EMG) and triboelectric nanogeneration (TENG) technologies, emphasizing their classification based on motion types: linear, rotational, and vibration-based. By examining each motion type, we highlight the unique characteristics, advantages, and challenges associated with hybrid EMG-TENG systems. Linear motion devices are particularly effective in harnessing energy from predictable sources, such as ocean waves, demonstrating moderate power outputs suitable for marine applications. Rotational motion devices excel in environments with continuous high-speed motions, achieving higher energy outputs, especially in wind energy systems. In contrast, vibration-based devices capture energy from irregular and low-frequency movements, offering versatility for applications in vehicles and wearable electronics. The review also discusses recent developments in hybrid systems, showcasing advancements in materials and designs that enhance energy capture and efficiency. Despite the progress, challenges remain, including mechanical wear, environmental influences, and the need for precise alignment. By understanding the complementary nature of EMG and TENG technologies, this review highlights how their integration can address the limitations of each technology. EMG excels in capturing high-speed, continuous motion, while TENG is more effective for low-frequency and irregular motion, allowing hybrid systems to efficiently harvest energy in diverse environments. Ultimately, the findings suggest that the strategic integration of EMG and TENG technologies can contribute significantly to sustainable energy solutions, paving the way for innovative developments in energy harvesting.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110584"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820643","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.2024.110537
Seyed Masoud Parsa , Zhijie Chen , Siran Feng , Yuanying Yang , Li Luo , Huu Hao Ngo , Wei Wei , Bing-Jie Ni , Wenshan Guo
One of the major obstacles to microbial fuel cell (MFC) development is the design of high-performance, durable, and cost-effective electrocatalysts for the oxygen reduction reaction (ORR) to improve system performance during the electrochemical process. Accordingly, metal-free nitrogen-doped carbon-based electrocatalysts, in different forms/families, have been brought into the spotlight as a promising alternative to address this challenge. In this critical review, we comprehensively focus on recent advances in the design of this type of electrocatalyst for application in MFCs. We discuss the main drawbacks in applying metal-free nitrogen-doped carbon-based electrocatalysts through different angles, from nano-scale challenges like the interaction of nitrogen species during the ORR process and identifying the main active sites in various nitrogen species, to macro-scale issues such as different synthesizing methods during electrode preparation, MFC experiment conditions, and long-term operation, economic and cost assessment, just to name a few, that bridge lab-scale experiments to future real-world prototypes. Indeed, this review aims to open new windows for applying metal-free nitrogen-doped carbon-based catalysts in MFCs by addressing the gaps between fundamental understanding of fabrication of this type of catalyst to applied engineering point of view for practical applications. Finally, by discussing the most important remaining challenges, we outline a conceptual framework for future researches.
{"title":"Metal-free nitrogen-doped carbon-based electrocatalysts for oxygen reduction reaction in microbial fuel cells: Advances, challenges, and future directions","authors":"Seyed Masoud Parsa , Zhijie Chen , Siran Feng , Yuanying Yang , Li Luo , Huu Hao Ngo , Wei Wei , Bing-Jie Ni , Wenshan Guo","doi":"10.1016/j.nanoen.2024.110537","DOIUrl":"10.1016/j.nanoen.2024.110537","url":null,"abstract":"<div><div>One of the major obstacles to microbial fuel cell (MFC) development is the design of high-performance, durable, and cost-effective electrocatalysts for the oxygen reduction reaction (ORR) to improve system performance during the electrochemical process. Accordingly, metal-free nitrogen-doped carbon-based electrocatalysts, in different forms/families, have been brought into the spotlight as a promising alternative to address this challenge. In this critical review, we comprehensively focus on recent advances in the design of this type of electrocatalyst for application in MFCs. We discuss the main drawbacks in applying metal-free nitrogen-doped carbon-based electrocatalysts through different angles, from nano-scale challenges like the interaction of nitrogen species during the ORR process and identifying the main active sites in various nitrogen species, to macro-scale issues such as different synthesizing methods during electrode preparation, MFC experiment conditions, and long-term operation, economic and cost assessment, just to name a few, that bridge lab-scale experiments to future real-world prototypes. Indeed, this review aims to open new windows for applying metal-free nitrogen-doped carbon-based catalysts in MFCs by addressing the gaps between fundamental understanding of fabrication of this type of catalyst to applied engineering point of view for practical applications. Finally, by discussing the most important remaining challenges, we outline a conceptual framework for future researches.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110537"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142763347","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.2024.110532
Zhenyang Li , Chenyu Li , Yue Xiao , Shuzheng Liu , Gang Qin , Jia Yang , Qiang Chen , Aiguo Zhou
Triboelectric nanogenerator (TENG) is widely used in the fields of sustainable green energy harvesting, self-powered motion parameter and tactile sensing, However, it still fails to meet the requirements under various complex conditions, such as low temperatures, self healing after destruction, punching, long-term placement, soaking in acid or alkali solution, scorch, continuous work. Herein, based on metal coordination, Zr4 + ions are introduced to enhance the first network k-carrageenan (k-CG) for achieving double enhancement in mechanics and electricity of the gel electrode layer, poly (N-hydroxyl acrylamide)/k-CG (PKZ) double network organic conductive gel enhanced by multiple hydrogen bonds and metal coordination bond is designed, and the gel exhibits high tensile strength, high conductivity, fast self-recovery, excellent self-repairing and low-temperature resistance. Based on simple sandpaper templates with different mesh numbers Ecoflex film with rough surfaces is designed for efficient triboelectric contact interface, and TENG with PKZ double network organic conductive gel as electrode layer is constructed, and possesses excellent resistant to multiple complex conditions. With high short-circuit current, open-circuit voltage and output power, the TENG is capable of powering electronic devices, and it can also be sensitive and stable sensing in writing recognition, real-time monitoring of motion parameters involving acceleration, speed and distance. The TENG is stable and reliable for sustainable green energy harvesting, motion parameter and tactile sensing in multiple complex environments. Thus, we provide novel ideas for designing energy harvesting and sensing for future wearable electronics under multiple complex conditions.
{"title":"Metal coordination bond and rough interface enhanced triboelectric nanogenerator aiming for multiple complex conditions","authors":"Zhenyang Li , Chenyu Li , Yue Xiao , Shuzheng Liu , Gang Qin , Jia Yang , Qiang Chen , Aiguo Zhou","doi":"10.1016/j.nanoen.2024.110532","DOIUrl":"10.1016/j.nanoen.2024.110532","url":null,"abstract":"<div><div>Triboelectric nanogenerator (TENG) is widely used in the fields of sustainable green energy harvesting, self-powered motion parameter and tactile sensing, However, it still fails to meet the requirements under various complex conditions, such as low temperatures, self healing after destruction, punching, long-term placement, soaking in acid or alkali solution, scorch, continuous work. Herein, based on metal coordination, Zr<sup>4 +</sup> ions are introduced to enhance the first network <em>k</em>-carrageenan (<em>k</em>-CG) for achieving double enhancement in mechanics and electricity of the gel electrode layer, poly (<em>N</em>-hydroxyl acrylamide)/<em>k</em>-CG (PKZ) double network organic conductive gel enhanced by multiple hydrogen bonds and metal coordination bond is designed, and the gel exhibits high tensile strength, high conductivity, fast self-recovery, excellent self-repairing and low-temperature resistance. Based on simple sandpaper templates with different mesh numbers Ecoflex film with rough surfaces is designed for efficient triboelectric contact interface, and TENG with PKZ double network organic conductive gel as electrode layer is constructed, and possesses excellent resistant to multiple complex conditions. With high short-circuit current, open-circuit voltage and output power, the TENG is capable of powering electronic devices, and it can also be sensitive and stable sensing in writing recognition, real-time monitoring of motion parameters involving acceleration, speed and distance. The TENG is stable and reliable for sustainable green energy harvesting, motion parameter and tactile sensing in multiple complex environments. Thus, we provide novel ideas for designing energy harvesting and sensing for future wearable electronics under multiple complex conditions.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110532"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756375","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 : 2025-01-31DOI: 10.1016/j.nanoen.2025.110730
Xiaofeng Pan, Qinhua Wang, Lei Jin, Yonghao Ni, Federico Rosei
Moisture-sorption-based energy harvesting emerges as a promising approach to harnessing electricity from the environment, presenting immense potential as a power reservoir for compact wearable electronic devices. Progress in water-absorbing materials has propelled the advancement of sustainable moisture energy technologies. However, challenges persist in low-humidity environments and maintaining stable outputs due to varying humidity levels. To tackle these issues, a paper-hydrogel electric generator (PHEG) was developed by integrating commercial cellulose-based filter paper and adhesive polyacrylamide (PAM) hydrogel. The PHEG generates a voltage of approximately 0.6 V through the generation and diffusion of protons within paper and the “galvanic reaction’’ facilitated by its asymmetric electrodes. This process produces a current of around 12.5 μA/cm² and delivers a power output of approximately 1.61 μW/cm². Moreover, assembling 10 PHEG units produced a battery-like power component, delivering a direct current voltage of about 6 V. The PAM gel with 50% glycerol content enabled the device to sustain voltages >0.4 V for over 1000 h without external stimulation. PHEG also demonstrated its potential as a self-powered strain and pressure sensor. As a green and easily deployable device combining gel and commercial papers, PHEG holds tremendous potential for eco-friendly and self-sufficient wearable electronics, offering a sustainable solution for renewable power supply.
{"title":"Integrated Paper-Hydrogel Structure for Spontaneous and Ultra-Durable Eco-Friendly Electricity Generation","authors":"Xiaofeng Pan, Qinhua Wang, Lei Jin, Yonghao Ni, Federico Rosei","doi":"10.1016/j.nanoen.2025.110730","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110730","url":null,"abstract":"Moisture-sorption-based energy harvesting emerges as a promising approach to harnessing electricity from the environment, presenting immense potential as a power reservoir for compact wearable electronic devices. Progress in water-absorbing materials has propelled the advancement of sustainable moisture energy technologies. However, challenges persist in low-humidity environments and maintaining stable outputs due to varying humidity levels. To tackle these issues, a paper-hydrogel electric generator (PHEG) was developed by integrating commercial cellulose-based filter paper and adhesive polyacrylamide (PAM) hydrogel. The PHEG generates a voltage of approximately 0.6<!-- --> <!-- -->V through the generation and diffusion of protons within paper and the “galvanic reaction’’ facilitated by its asymmetric electrodes. This process produces a current of around 12.5 μA/cm² and delivers a power output of approximately 1.61 μW/cm². Moreover, assembling 10 PHEG units produced a battery-like power component, delivering a direct current voltage of about 6<!-- --> <!-- -->V. The PAM gel with 50% glycerol content enabled the device to sustain voltages >0.4<!-- --> <!-- -->V for over 1000<!-- --> <!-- -->h without external stimulation. PHEG also demonstrated its potential as a self-powered strain and pressure sensor. As a green and easily deployable device combining gel and commercial papers, PHEG holds tremendous potential for eco-friendly and self-sufficient wearable electronics, offering a sustainable solution for renewable power supply.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"11 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072101","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 : 2025-01-30DOI: 10.1016/j.nanoen.2025.110740
Haojie Ye, Xuemei Zeng, Xiaomei Li, Kun He, Yanshuai Li, Yifei Yuan
Among various energy storage systems, aqueous zinc-ion batteries (AZIBs) are widely regarded as a promising option due to their high theoretical capacity, cost-effectiveness, and environmental friendliness. Similarly, manganese-based oxides (MBO), with their desirable specific capacity and eco-friendly nature, have gained popularity as a suitable cathode material for AZIBs. Nonetheless, these materials also face various challenges like poor electrical conductivity, low ion diffusion kinetics, manganese dissolution, inferior structural stability, and irreversible inert phase formation. Strategies like defect engineering, surface coating, electrolyte optimization, morphology control and compositing have been explored. Notably, ion doping and intercalation strategy has been widely applied for their easy fabrication process and effective modification effect. This review delves into the working mechanism of MBO cathodes in AZIBs, comprehensively selects the existing challenges, and elucidates the modification mechanisms aimed at enhancing electrochemical performance through ion doping and intercalation. Some recommendations and outlooks are also provided for future research at the end.
{"title":"Review of Ion Doping and Intercalation Strategies for Advancing Manganese-Based Oxide Cathodes in Aqueous Zinc-Ion Batteries","authors":"Haojie Ye, Xuemei Zeng, Xiaomei Li, Kun He, Yanshuai Li, Yifei Yuan","doi":"10.1016/j.nanoen.2025.110740","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110740","url":null,"abstract":"Among various energy storage systems, aqueous zinc-ion batteries (AZIBs) are widely regarded as a promising option due to their high theoretical capacity, cost-effectiveness, and environmental friendliness. Similarly, manganese-based oxides (MBO), with their desirable specific capacity and eco-friendly nature, have gained popularity as a suitable cathode material for AZIBs. Nonetheless, these materials also face various challenges like poor electrical conductivity, low ion diffusion kinetics, manganese dissolution, inferior structural stability, and irreversible inert phase formation. Strategies like defect engineering, surface coating, electrolyte optimization, morphology control and compositing have been explored. Notably, ion doping and intercalation strategy has been widely applied for their easy fabrication process and effective modification effect. This review delves into the working mechanism of MBO cathodes in AZIBs, comprehensively selects the existing challenges, and elucidates the modification mechanisms aimed at enhancing electrochemical performance through ion doping and intercalation. Some recommendations and outlooks are also provided for future research at the end.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"15 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056674","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}
Over the past decade, the library of two-dimensional (2D) niobate perovskites has been significantly expanded, featuring a wide array of intriguing properties such as exceptionally large specific surface area, outstanding flexibility and transparency, high chemical stability, and unique physical characteristics (including dielectric, ferroelectric, and semiconducting behaviors). The huge possibility to achieve controllable nanosheet characteristics such as composition, size, shape, and thickness by modifying the layered parent compound and the following exfoliation technique presents vast opportunities for achieving tunable functional properties. Additionally, the unique nature of 2D niobate perovskites have made them promising material candidates for multifunctional applications, such as photodetectors, phototransistors, photocatalysis, dielectric applications, etc. This review provides a concise overview of recent developments in the research on 2D niobate perovskites exfoliated from layered perovskite oxides, with emphasis on their microstructural, optical, dielectric and semiconducting properties. This review also explores the use of these materials in diverse applications, including microcapacitors, phototransistors, photodetectors, photocatalysis, and as functional elements in luminescence, nanofiltration, anticorrosion, template-assisted film growth, and more. Finally, we provide a perspective into material design and property regulation for widespread applications, highlighting the challenges associated with these efforts.
{"title":"From Layered Perovskites Oxide to Multifunctional Devices: Recent Progress in 2D Niobate Perovskites for Photonics, Catalysis, and Beyond","authors":"Ziliang Li, Jigong Hao, Hongbing Wang, Fa Cao, Xinli Li, Yong Zhang, Mahesh Kumar Joshi","doi":"10.1016/j.nanoen.2025.110719","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110719","url":null,"abstract":"Over the past decade, the library of two-dimensional (2D) niobate perovskites has been significantly expanded, featuring a wide array of intriguing properties such as exceptionally large specific surface area, outstanding flexibility and transparency, high chemical stability, and unique physical characteristics (including dielectric, ferroelectric, and semiconducting behaviors). The huge possibility to achieve controllable nanosheet characteristics such as composition, size, shape, and thickness by modifying the layered parent compound and the following exfoliation technique presents vast opportunities for achieving tunable functional properties. Additionally, the unique nature of 2D niobate perovskites have made them promising material candidates for multifunctional applications, such as photodetectors, phototransistors, photocatalysis, dielectric applications, etc. This review provides a concise overview of recent developments in the research on 2D niobate perovskites exfoliated from layered perovskite oxides, with emphasis on their microstructural, optical, dielectric and semiconducting properties. This review also explores the use of these materials in diverse applications, including microcapacitors, phototransistors, photodetectors, photocatalysis, and as functional elements in luminescence, nanofiltration, anticorrosion, template-assisted film growth, and more. Finally, we provide a perspective into material design and property regulation for widespread applications, highlighting the challenges associated with these efforts.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"12 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055287","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}
Underwater acoustic communication is essential for both military and civilian applications. With the accelerated exploration and development of oceanic resources, the demand for advanced underwater acoustic communication technologies has grown increasingly urgent. However, this communication method faces several challenges, including delays in signal travel, restricted coverage, and reduced bandwidth, all of which reduce the operational efficiency and potential of underwater systems. In 2012, Professor Wang introduced the triboelectric nanogenerator (TENG), a device that leverages the triboelectric effect to provide an innovative solution for addressing these challenges. This article commences with an elucidation of the fundamental principles governing acoustic TENGs, succeeded by a comprehensive overview of various resonant cavity structures designed to boost the efficiency of sound energy harvesting. Additionally, it delves into the operational frequency range of acoustic TENGs, with particular emphasis on both ultrasonic and low-frequency sound waves for self-powered triboelectric sensors. Finally, the article reviews the latest research on the applications of acoustic TENGs in underwater positioning, monitoring, wireless communication, and control. The content underscores the substantial potential of acoustic TENGs in enhancing underwater wireless communication, presenting a promising new avenue for the advancement of future underwater technologies.
{"title":"Acoustic Triboelectric Nanogenerator for Underwater Acoustic Communication","authors":"Huilin Ge, Shuqi Zhao, Baoying Dai, Shaoqiang Chen, Yuchen Pan, Youguo Lu, Yannan Xie, Chunxiao Jiang","doi":"10.1016/j.nanoen.2025.110738","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110738","url":null,"abstract":"Underwater acoustic communication is essential for both military and civilian applications. With the accelerated exploration and development of oceanic resources, the demand for advanced underwater acoustic communication technologies has grown increasingly urgent. However, this communication method faces several challenges, including delays in signal travel, restricted coverage, and reduced bandwidth, all of which reduce the operational efficiency and potential of underwater systems. In 2012, Professor Wang introduced the triboelectric nanogenerator (TENG), a device that leverages the triboelectric effect to provide an innovative solution for addressing these challenges. This article commences with an elucidation of the fundamental principles governing acoustic TENGs, succeeded by a comprehensive overview of various resonant cavity structures designed to boost the efficiency of sound energy harvesting. Additionally, it delves into the operational frequency range of acoustic TENGs, with particular emphasis on both ultrasonic and low-frequency sound waves for self-powered triboelectric sensors. Finally, the article reviews the latest research on the applications of acoustic TENGs in underwater positioning, monitoring, wireless communication, and control. The content underscores the substantial potential of acoustic TENGs in enhancing underwater wireless communication, presenting a promising new avenue for the advancement of future underwater technologies.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"120 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055288","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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