The oil leakage on the ocean leads to the inevitable and critical environment crisis, indicating the self-powered alerts with the high sensitivity are rather crucial for the early detection, as well as for extended periods with low consumption. Inspired by the ramie leaf, we fabricated an electrospinning fiber polytetrafluoroethylene (EF-PTFE) film, and prepared a rolling pendulum-based triboelectric nanogenerator (RP-TENG) detector with the EF-PTFE surface, whose fiber morphology can realize the distinguishable interaction between oil and water, leading to different charge transfer. Besides, the compressible structure of EF-PTFE film can enhance the effect on the induced charge, thereby improving the TENG output. The open-circuit voltage (VOC) can increase from approximately 11 V to 15 V. Moreover, the absorption to the trace oil contributes to the high sensitivity, even the diesel concentration below 0.01 mL/m² on the water surface can be well detected. The RP-TENG can also identify petroleum and its derivatives. Furthermore, the TENG sensors with distinguishable absorption also can be extended to the detection of the trace chemicals, promoting the significant applications in multi-functional sensing.
海洋石油泄漏导致了不可避免的严重环境危机，这表明具有高灵敏度的自供电警报器对于早期检测和长期低耗而言至关重要。受苎麻叶的启发，我们制作了一种电纺丝纤维聚四氟乙烯（EF-PTFE）薄膜，并利用 EF-PTFE 表面制备了一种滚动摆式三电纳米发电机（RP-TENG）探测器，其纤维形态可实现油和水之间的可区分相互作用，从而导致不同的电荷转移。此外，EF-PTFE 薄膜的可压缩结构可增强对感应电荷的影响，从而提高 TENG 的输出。开路电压（VOC）可从约 11 V 提高到 15 V。此外，对痕量油的吸收也有助于实现高灵敏度，即使水面上的柴油浓度低于 0.01 mL/m²，也能很好地检测到。RP-TENG 还能识别石油及其衍生物。此外，具有可分辨吸收特性的 TENG 传感器还可扩展到痕量化学品的检测，从而在多功能传感领域得到广泛应用。
{"title":"Enhanced Induced Charge in Ramie-Inspired Triboelectric Layer towards Trace Oil Detection","authors":"Qianxi Zhang, Zehui Han, Jin Yan, Shishi Li, Chengpeng Li, Jianlong Wu, Denghui Li, Yaokang Zhang, Zhehan Mai, Qingqing Zhang, Peng Zhang","doi":"10.1016/j.nanoen.2025.110711","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110711","url":null,"abstract":"The oil leakage on the ocean leads to the inevitable and critical environment crisis, indicating the self-powered alerts with the high sensitivity are rather crucial for the early detection, as well as for extended periods with low consumption. Inspired by the ramie leaf, we fabricated an electrospinning fiber polytetrafluoroethylene (EF-PTFE) film, and prepared a rolling pendulum-based triboelectric nanogenerator (RP-TENG) detector with the EF-PTFE surface, whose fiber morphology can realize the distinguishable interaction between oil and water, leading to different charge transfer. Besides, the compressible structure of EF-PTFE film can enhance the effect on the induced charge, thereby improving the TENG output. The open-circuit voltage (V<sub>OC</sub>) can increase from approximately 11<!-- --> <!-- -->V to 15<!-- --> <!-- -->V. Moreover, the absorption to the trace oil contributes to the high sensitivity, even the diesel concentration below 0.01<!-- --> <!-- -->mL/m² on the water surface can be well detected. The RP-TENG can also identify petroleum and its derivatives. Furthermore, the TENG sensors with distinguishable absorption also can be extended to the detection of the trace chemicals, promoting the significant applications in multi-functional sensing.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"18 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035047","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 : 2025-01-25DOI: 10.1016/j.nanoen.2025.110708
Xiaochuan Tang, Wei Liu, Chenjun Lei, Yang Ling, Shifei Kang
Ammonia (NH3) plays a crucial role in agricultural production and chemical industry, and it is predicted to be an ideal future energy carrier. The traditional Haber-Bosch process, used for ammonia synthesis, operates under high temperatures and pressures, leading to significant energy consumption and carbon dioxide emissions. In contrast, the electrocatalytic nitrate reduction reaction (NO3RR) offers a promising and sustainable pathway for valuable NH3 production. However, challenges on the rational regulation of intermediates remain, the sluggish reaction kinetics and poor selectivity leads to low NH3 yield, further restricted cascade reaction towards industrial implementation. Notably, polarized electric fields can modulate the charge distribution at catalyst active sites, enhancing catalytic efficiency, thus has emerged as one of the most effective strategies for addressing these challenges. Therefore, this review begins with a practical perspective, exploring the mechanisms and challenges in NO3RR, and highlighting advancements in polarized electric field-assisted NO3RR, including the utilization of single-atom catalysts, defect engineering, and heterostructures. This review also analyzes the mechanisms by which polarized electric fields regulate reaction pathways and construct cascade reactions for intermediate products control. Furthermore, emphasized how theoretical calculations predict reaction pathways, evaluate energy barriers, and provide electronic structure insights that guide the design and optimization of catalysts. Finally, future development directions and prospects for NO3RR under the regulation of polarized electric fields are discussed. This review underscores the value and versatility of polarized electric fields in NO3RR, paving the way for significant progress in energy and environmental catalysis.
{"title":"Mechanism of Key Intermediates Regulation in Electrocatalytic Nitrate-to-Ammonia Conversion Driven by Polarized Electric Field","authors":"Xiaochuan Tang, Wei Liu, Chenjun Lei, Yang Ling, Shifei Kang","doi":"10.1016/j.nanoen.2025.110708","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110708","url":null,"abstract":"Ammonia (NH<sub>3</sub>) plays a crucial role in agricultural production and chemical industry, and it is predicted to be an ideal future energy carrier. The traditional Haber-Bosch process, used for ammonia synthesis, operates under high temperatures and pressures, leading to significant energy consumption and carbon dioxide emissions. In contrast, the electrocatalytic nitrate reduction reaction (NO3RR) offers a promising and sustainable pathway for valuable NH<sub>3</sub> production. However, challenges on the rational regulation of intermediates remain, the sluggish reaction kinetics and poor selectivity leads to low NH<sub>3</sub> yield, further restricted cascade reaction towards industrial implementation. Notably, polarized electric fields can modulate the charge distribution at catalyst active sites, enhancing catalytic efficiency, thus has emerged as one of the most effective strategies for addressing these challenges. Therefore, this review begins with a practical perspective, exploring the mechanisms and challenges in NO3RR, and highlighting advancements in polarized electric field-assisted NO3RR, including the utilization of single-atom catalysts, defect engineering, and heterostructures. This review also analyzes the mechanisms by which polarized electric fields regulate reaction pathways and construct cascade reactions for intermediate products control. Furthermore, emphasized how theoretical calculations predict reaction pathways, evaluate energy barriers, and provide electronic structure insights that guide the design and optimization of catalysts. Finally, future development directions and prospects for NO3RR under the regulation of polarized electric fields are discussed. This review underscores the value and versatility of polarized electric fields in NO3RR, paving the way for significant progress in energy and environmental catalysis.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"35 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031258","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 : 2025-01-25DOI: 10.1016/j.nanoen.2025.110717
Xudong Liu, Xuewei Jiao, Song Yin, Nasir Ali, Mingxuan Liu, Bingshun Xu, Shaopeng Yang, Weiguang Kong
The presence of halogen Schottky defects in the lattice structure of metal halide perovskites (MHPs) lowers the activation energy for ion migration. In this study, MAPbI3 was employed as the perovskite prototype to investigate the source and inhibition mechanisms of halogen-ion-related point defects. Our findings indicate that the spatial separation of MA+-PbI3- and/or MAI-PbI2 induced by the utilization of the pristine coordinating solvents is the main cause for the iodine Schottky defects. By introducing an oxidized coordinating solvent (o-NMP), a rapid in-situ reaction between MAI and PbI2 can occur with the assistance of a reversible redox reaction in solution. Consequently, an enhanced power conversion efficiency (PCE) is observed, exceeding 22% for MAPbI3-based perovskite solar cells (PSCs) and approaching 24% for FAMA mixed devices fabricated using a room-temperature blade coating method. Both the efficiency values under the corresponding perovskite systems are among the highest records achieved with similar processing techniques. Moreover, the PSCs exhibit improved stability against sunlight exposure, external electric fields, and moisture infiltration.
{"title":"Oxidization Strategy of Coordinating Solvents Mitigates Composition Segregation in Perovskite","authors":"Xudong Liu, Xuewei Jiao, Song Yin, Nasir Ali, Mingxuan Liu, Bingshun Xu, Shaopeng Yang, Weiguang Kong","doi":"10.1016/j.nanoen.2025.110717","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110717","url":null,"abstract":"The presence of halogen Schottky defects in the lattice structure of metal halide perovskites (MHPs) lowers the activation energy for ion migration. In this study, MAPbI<sub>3</sub> was employed as the perovskite prototype to investigate the source and inhibition mechanisms of halogen-ion-related point defects. Our findings indicate that the spatial separation of MA<sup>+</sup>-PbI<sub>3</sub><sup>-</sup> and/or MAI-PbI<sub>2</sub> induced by the utilization of the pristine coordinating solvents is the main cause for the iodine Schottky defects. By introducing an oxidized coordinating solvent (o-NMP), a rapid in-situ reaction between MAI and PbI<sub>2</sub> can occur with the assistance of a reversible redox reaction in solution. Consequently, an enhanced power conversion efficiency (PCE) is observed, exceeding 22% for MAPbI<sub>3</sub>-based perovskite solar cells (PSCs) and approaching 24% for FAMA mixed devices fabricated using a room-temperature blade coating method. Both the efficiency values under the corresponding perovskite systems are among the highest records achieved with similar processing techniques. Moreover, the PSCs exhibit improved stability against sunlight exposure, external electric fields, and moisture infiltration.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"120 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035045","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 : 2025-01-25DOI: 10.1016/j.nanoen.2025.110706
Viet Anh Cao, Van Quan Phan, Nam Khanh Nguyen, Minje Kim, Phuoc Cao Van, Hieu Nguyen Minh, Soo Young Kim, Junghyo Nah
Tactile perception, a vital sensory function, enables humans to interact directly with their environment, responding to various stimuli such as pressure, temperature, and texture. Recent advancements in functional materials and micro-nano fabrication have led to the development of highly flexible tactile sensors with excellent spatial resolution and sensitivity. However, replicating the complexity of human tactile perception remains challenging, necessitating innovative sensor designs that can mimic human touch. This study presents a multifunctional tactile sensor with multimodal capabilities, capable of simultaneously detecting pressure, temperature, and surface properties by integrating distinct sensing mechanisms. The sensor utilizes PVDF/Ti3C2 and PVDF-TrFE/Ti3C2 composites for static and dynamic pressure sensing, respectively, and PEDOT: PSS/Ti3C2 for temperature measurement. Additionally, a triboelectric layer with patterned PDMS enables effective surface differentiation. Each sensing layer was integrated using a hot rolling press technique, with Ti3C2 enhancing the sensor's conductivity, piezoelectric performance, and thermal sensitivity. The multimodal sensor demonstrates simultaneous detection of static and dynamic stimuli, temperature variations, and surface material properties, making it suitable for advanced applications in robotics and healthcare where complex tactile feedback is essential.
{"title":"Multifunctional tactile sensor with multimodal capabilities for pressure, temperature, and surface recognition","authors":"Viet Anh Cao, Van Quan Phan, Nam Khanh Nguyen, Minje Kim, Phuoc Cao Van, Hieu Nguyen Minh, Soo Young Kim, Junghyo Nah","doi":"10.1016/j.nanoen.2025.110706","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110706","url":null,"abstract":"Tactile perception, a vital sensory function, enables humans to interact directly with their environment, responding to various stimuli such as pressure, temperature, and texture. Recent advancements in functional materials and micro-nano fabrication have led to the development of highly flexible tactile sensors with excellent spatial resolution and sensitivity. However, replicating the complexity of human tactile perception remains challenging, necessitating innovative sensor designs that can mimic human touch. This study presents a multifunctional tactile sensor with multimodal capabilities, capable of simultaneously detecting pressure, temperature, and surface properties by integrating distinct sensing mechanisms. The sensor utilizes PVDF/Ti<sub>3</sub>C<sub>2</sub> and PVDF-TrFE/Ti<sub>3</sub>C<sub>2</sub> composites for static and dynamic pressure sensing, respectively, and PEDOT: PSS/Ti<sub>3</sub>C<sub>2</sub> for temperature measurement. Additionally, a triboelectric layer with patterned PDMS enables effective surface differentiation. Each sensing layer was integrated using a hot rolling press technique, with Ti<sub>3</sub>C<sub>2</sub> enhancing the sensor's conductivity, piezoelectric performance, and thermal sensitivity. The multimodal sensor demonstrates simultaneous detection of static and dynamic stimuli, temperature variations, and surface material properties, making it suitable for advanced applications in robotics and healthcare where complex tactile feedback is essential.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"14 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035046","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}
Electrodes are transitioning from flexible to stretchable modality to accommodate more complex application scenarios. Here, inspired by the human skin, we report a rapidly formed Janus-structured stretchable (JSS) electrode. Wherein, the phase separation technology enables rapid film formation, and the gravity effect constructs the Janus structure. The Janus structure aggregates liquid metal (LM) on one side and thermoplastic polyurethane (TPU) on the other, providing a combination of highly stretchable and highly conductive nature at the same time. The JSS film has fast film forming time (15 s), metal-like conductivity (106 S/m), high stretchability (260%), permeable (4077.41 g m-2 day-1), ultra-thin thickness (50-1000 μm), strain-insensitivity (stretching, folding, and rotation states), as well as excellent cuttable, transferable, recyclable, reconfigurable, and biocompatible property. Furthermore, the JSS films successfully achieve the effective acquisition of physiological, triboelectric, and resistive signals, when applied as standalone devices and integrated electrodes for electrophysiological signal recording, energy harvesting, and wearable sensing. With its prominent performance and broad adaptability, the proposed JSS film is expected to significantly advance the field of stretchable electrodes and further promote the practical applications of flexible and stretchable devices in industrial and electronic skin.
{"title":"A permeable, metal-like conductivity, stretchable, strain-insensitivity, self-assembled and rapidly formed Janus-structured e-skin","authors":"Shengxin Xiang, Xiao Wei, Lei Liu, Jianlong Hong, Shengshun Duan, Huiyun Zhang, Jinqiu Huang, Zhishui Chen, Zhiwei Zhao, Qiongfeng Shi, Jun Wu","doi":"10.1016/j.nanoen.2025.110712","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110712","url":null,"abstract":"Electrodes are transitioning from flexible to stretchable modality to accommodate more complex application scenarios. Here, inspired by the human skin, we report a rapidly formed Janus-structured stretchable (JSS) electrode. Wherein, the phase separation technology enables rapid film formation, and the gravity effect constructs the Janus structure. The Janus structure aggregates liquid metal (LM) on one side and thermoplastic polyurethane (TPU) on the other, providing a combination of highly stretchable and highly conductive nature at the same time. The JSS film has fast film forming time (15<!-- --> <!-- -->s), metal-like conductivity (10<sup>6<!-- --> </sup>S/m), high stretchability (260%), permeable (4077.41<!-- --> <!-- -->g<!-- --> <!-- -->m<sup>-2</sup> day<sup>-1</sup>), ultra-thin thickness (50-1000 μm), strain-insensitivity (stretching, folding, and rotation states), as well as excellent cuttable, transferable, recyclable, reconfigurable, and biocompatible property. Furthermore, the JSS films successfully achieve the effective acquisition of physiological, triboelectric, and resistive signals, when applied as standalone devices and integrated electrodes for electrophysiological signal recording, energy harvesting, and wearable sensing. With its prominent performance and broad adaptability, the proposed JSS film is expected to significantly advance the field of stretchable electrodes and further promote the practical applications of flexible and stretchable devices in industrial and electronic skin.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"35 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035043","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}
In this study, a high-performance and swell-resistant triboelectric nanogenerator (TENG) has been proposed, specifically designed for high-humidity environments to meet the challenges of swelling problem and performance degradation. The composite film was fabricated by combining self-aggregation crosslinking reactions for polyvinyl alcohol (PVA) through ammonium persulfate (APS) initiations and interface physicochemical structure regulations for polyacrylonitrile (PAN) support layer. The treatment of PAN films with sodium hydroxide (NaOH) and tannic acid (TA) significantly enhances their electron affinity and electrical properties. Furthermore, the film exhibits superior swelling resistance, mechanical strength, and triboelectric characteristics. Owing to higher positive surface potential and optimized interface modulation, the constructed TENG using 8 wt% PVA initiated by 1.25 wt% APS spined on modified PAN support layer (PA8-1.25NTP-TENG) presents excellent stability and performance, with the ISC density reaching 180.9 mA·m-2, voltage of 1396 V, and power density of 89.66 W·m-2. Practically, the TENG successfully powered electronic devices and generated signals through human movements, harvesting biomechanical energy. Additionally, a self-powered ethanol pervaporation dehydration detector was developed, showcasing excellent permeability selectivity and stable performance in high humidity and elevated ethanol concentrations. Notably, in the dehydration process, the concentration of ethanol after membrane treatment achieves exceeding 99.99%. This work introduces a novel strategy for enhancing the electrical properties of TENGs, providing valuable insights into material interface regulation mechanisms during energy conversion.
{"title":"Flexible Triboelectric Nanogenerators Fabricated by PAN-supported Self-aggregation Crosslinked PVA Composite Films for Kinetic Energy Harvesting and Pervaporization Applications","authors":"Jing Wang, Zhaoyue Xia, Heng Yao, Hui Yang, Qilong Zhang","doi":"10.1016/j.nanoen.2025.110713","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110713","url":null,"abstract":"In this study, a high-performance and swell-resistant triboelectric nanogenerator (TENG) has been proposed, specifically designed for high-humidity environments to meet the challenges of swelling problem and performance degradation. The composite film was fabricated by combining self-aggregation crosslinking reactions for polyvinyl alcohol (PVA) through ammonium persulfate (APS) initiations and interface physicochemical structure regulations for polyacrylonitrile (PAN) support layer. The treatment of PAN films with sodium hydroxide (NaOH) and tannic acid (TA) significantly enhances their electron affinity and electrical properties. Furthermore, the film exhibits superior swelling resistance, mechanical strength, and triboelectric characteristics. Owing to higher positive surface potential and optimized interface modulation, the constructed TENG using 8<!-- --> <!-- -->wt% PVA initiated by 1.25<!-- --> <!-- -->wt% APS spined on modified PAN support layer (PA<sub>8-1.25</sub>NTP-TENG) presents excellent stability and performance, with the I<sub>SC</sub> density reaching 180.9<!-- --> <!-- -->mA·m<sup>-2</sup>, voltage of 1396<!-- --> <!-- -->V, and power density of 89.66<!-- --> <!-- -->W·m<sup>-2</sup>. Practically, the TENG successfully powered electronic devices and generated signals through human movements, harvesting biomechanical energy. Additionally, a self-powered ethanol pervaporation dehydration detector was developed, showcasing excellent permeability selectivity and stable performance in high humidity and elevated ethanol concentrations. Notably, in the dehydration process, the concentration of ethanol after membrane treatment achieves exceeding 99.99%. This work introduces a novel strategy for enhancing the electrical properties of TENGs, providing valuable insights into material interface regulation mechanisms during energy conversion.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"34 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035049","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}
Quantum-well tandem solar cells have been shown to achieve higher efficiencies due to a more matched bandgap combination. But beyond 100-period quantum wells, the stress balance of the epitaxial layer will become extremely difficult, especially for large-sized epitaxial layers. In this paper, a more economical 40-period InGaAs/GaAsP quantum well superlattices are used to achieve excellent spectral control of 8 cm2 GaInP/GaAs/InGaAs solar cells. Under the AM0 spectrum, the short-circuit current density of the triple-junction solar cells increased from 16.859 mA/cm2 to 17.665 mA/cm2, benefiting from the external quantum efficiency of approximately 40% in the expanded spectral band of the 40-period quantum wells. Compared with conventional flexible GaInP/GaAs/InGaAs solar cells, the addition of 40-period quantum wells increased the efficiency from 32.30% to 33.47% (AM0). The 40-period quantum well superlattices is an effective parameter to achieve higher efficiency and large-area flexible triple-junction solar cells.
{"title":"Achieving flexible higher efficiency GaInP/GaAs/InGaAs solar cells by 40-period quantum well superlattices","authors":"Menglu Yu, Junhua Long, Qiangjian Sun, Zhitao Chen, Xiaoxu Wu, ZhenLong Wu, Xiaolong Luo, Qing Gong, Wencong Yan, Qi Chen, Jianjun Zhu, Shulong Lu","doi":"10.1016/j.nanoen.2025.110718","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110718","url":null,"abstract":"Quantum-well tandem solar cells have been shown to achieve higher efficiencies due to a more matched bandgap combination. But beyond 100-period quantum wells, the stress balance of the epitaxial layer will become extremely difficult, especially for large-sized epitaxial layers. In this paper, a more economical 40-period InGaAs/GaAsP quantum well superlattices are used to achieve excellent spectral control of 8 cm<sup>2</sup> GaInP/GaAs/InGaAs solar cells. Under the AM0 spectrum, the short-circuit current density of the triple-junction solar cells increased from 16.859 mA/cm<sup>2</sup> to 17.665 mA/cm<sup>2</sup>, benefiting from the external quantum efficiency of approximately 40% in the expanded spectral band of the 40-period quantum wells. Compared with conventional flexible GaInP/GaAs/InGaAs solar cells, the addition of 40-period quantum wells increased the efficiency from 32.30% to 33.47% (AM0). The 40-period quantum well superlattices is an effective parameter to achieve higher efficiency and large-area flexible triple-junction solar cells.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"48 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031173","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 : 2025-01-24DOI: 10.1016/j.nanoen.2025.110694
Hengrui Sheng, Leo N.Y. Cao, Yurui Shang, Chengyu Li, Zhuyu Zhou, Yang Jiang, Yanshuo Sun, Wei Tang, Baodong Chen, Wenxi Guo, Zijie Xu, Zhong Lin Wang
Turbulence, a state of disordered and random air hydrodynamic phenomenon, constantly pits it against flight safety during aviation. In the interplay between safe flight and turbulence, the challenge of real-time in situ monitoring of the surface airflow state on aircraft has become a difficult but crucial challenge. However, due to constraints in materials science and technological advancements, a flawless solution for mapping the surface airflow of aircraft has not yet been developed. Herein, based on the strong conformability, strong positive tribomaterial silk fibroin and fluid dynamics biomimetic design, a self-powered, high signal-to-noise ratio in-situ aircraft surface turbulence mapping system has been developed based on the principle of triboelectric nanogenerators (TENGs). On one hand, the system functions as a vortex generator during normal flight; on the other hand, the system can swiftly detect the degree of stall and enhance flight safety when the aircraft suffers airflow separation due to a high angle of attack. The backend signal of the system is transmitted by a self-developed wireless transmitter, suitable for various fixed-wing aircraft.
{"title":"Conformal self-powered high signal-to-noise ratio biomimetic in-situ aircraft surface turbulence mapping system","authors":"Hengrui Sheng, Leo N.Y. Cao, Yurui Shang, Chengyu Li, Zhuyu Zhou, Yang Jiang, Yanshuo Sun, Wei Tang, Baodong Chen, Wenxi Guo, Zijie Xu, Zhong Lin Wang","doi":"10.1016/j.nanoen.2025.110694","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110694","url":null,"abstract":"Turbulence, a state of disordered and random air hydrodynamic phenomenon, constantly pits it against flight safety during aviation. In the interplay between safe flight and turbulence, the challenge of real-time in situ monitoring of the surface airflow state on aircraft has become a difficult but crucial challenge. However, due to constraints in materials science and technological advancements, a flawless solution for mapping the surface airflow of aircraft has not yet been developed. Herein, based on the strong conformability, strong positive tribomaterial silk fibroin and fluid dynamics biomimetic design, a self-powered, high signal-to-noise ratio in-situ aircraft surface turbulence mapping system has been developed based on the principle of triboelectric nanogenerators (TENGs). On one hand, the system functions as a vortex generator during normal flight; on the other hand, the system can swiftly detect the degree of stall and enhance flight safety when the aircraft suffers airflow separation due to a high angle of attack. The backend signal of the system is transmitted by a self-developed wireless transmitter, suitable for various fixed-wing aircraft.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"58 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026802","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 : 2025-01-23DOI: 10.1016/j.nanoen.2025.110710
Peng Yi, Lan Jiang, Xiaowei Li, Beibei Fan, Xibiao Li, Taoyong Li, Yanpei Yang, Yang Liu, Xiangyu Zhang, Andong Wang, Zhi Wang, Chi Zhang
The energy potential stored in water is tremendous, and triboelectric nanogenerators (TENG) offer a compact and efficient means of harnessing hydroelectric power. However, the practical implementation of liquid-solid TENG imposes more stringent demands on power output. In this paper, we propose a novel approach to manipulate the contact mode of droplets on flexible friction layer interfaces by leveraging precise spatiotemporal control offered by femtosecond laser nanofabrication. Based on dynamic electronic regulation, we efficiently fabricate tear-shaped gradient micro-nano composite structures on Polydimethylsiloxane (PDMS) interfaces. This technique enhances the contact area between microstructures and liquid droplets at the micrometer scale while simultaneously reducing adhesive forces between droplets and the friction layer at the nanometer scale. As a result, we observe a remarkable 24-fold increase in friction-induced electric performance compared to blank PDMS. Furthermore, augmenting sliding speed of droplets leads to significantly enhanced charge generation. This groundbreaking advancement not only facilitates practical utilization of liquid-solid TENGs but also enables impressive applications such as successfully illuminating 520 LED bulbs and charging power bank. The present study introduces an innovative approach to enhance TENG performance by regulating liquid-solid contact mode through interfacial micro-nano structures, offering potential for further advancements in output power of liquid-solid TENGs.
{"title":"Contact Mode controls Droplet Generate Electricity by Femtosecond Laser","authors":"Peng Yi, Lan Jiang, Xiaowei Li, Beibei Fan, Xibiao Li, Taoyong Li, Yanpei Yang, Yang Liu, Xiangyu Zhang, Andong Wang, Zhi Wang, Chi Zhang","doi":"10.1016/j.nanoen.2025.110710","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110710","url":null,"abstract":"The energy potential stored in water is tremendous, and triboelectric nanogenerators (TENG) offer a compact and efficient means of harnessing hydroelectric power. However, the practical implementation of liquid-solid TENG imposes more stringent demands on power output. In this paper, we propose a novel approach to manipulate the contact mode of droplets on flexible friction layer interfaces by leveraging precise spatiotemporal control offered by femtosecond laser nanofabrication. Based on dynamic electronic regulation, we efficiently fabricate tear-shaped gradient micro-nano composite structures on Polydimethylsiloxane (PDMS) interfaces. This technique enhances the contact area between microstructures and liquid droplets at the micrometer scale while simultaneously reducing adhesive forces between droplets and the friction layer at the nanometer scale. As a result, we observe a remarkable 24-fold increase in friction-induced electric performance compared to blank PDMS. Furthermore, augmenting sliding speed of droplets leads to significantly enhanced charge generation. This groundbreaking advancement not only facilitates practical utilization of liquid-solid TENGs but also enables impressive applications such as successfully illuminating 520 LED bulbs and charging power bank. The present study introduces an innovative approach to enhance TENG performance by regulating liquid-solid contact mode through interfacial micro-nano structures, offering potential for further advancements in output power of liquid-solid TENGs.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"108 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026842","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 : 2025-01-23DOI: 10.1016/j.nanoen.2025.110703
Pengfan Wu, Yang Liu, Fayang Wang, Haitao Zhang, Shiwei Xu, Endian Cui, Tao Liu, Xunlong Shi, Ya Yang, Xiaojing Mu
The advancement of implantable electronic devices has significantly improved medical diagnostics, therapeutics, and regenerative medicine. To realize the trend of unwired, simple-operation and high-safety, electronic implantation. We developed an implantable magnetic driving TENG (IMD-TENG) with a zero-Poisson's-ratio design, which processes a novel biodegradable and biocompatible PVA-chitosan (PVA-CS) aerogel by exploiting interface polarization. The electrical performance of CS-based TENGs, achieving an open circuit voltage of 1431 V, and a short circuit current density of 3.88 μA cm-2. Leveraging the PVA-CS aerogel's excellent biocompatibility and degradability, IMD-TENG was applied in vivo energy supply and electrical stimulation. The results demonstrated the IMD-TENG's compatibility with biological tissues and stable output, along with positive effects on the growth and neurite elongation of SH-SY5Y neuron cells, promoting neuronal maturation and increased Tau protein expression. This innovative approach provides a new avenue for developing implantable bioelectronic devices, with potential applications in treating neurodegenerative diseases and advancing nerve tissue engineering.
{"title":"Magnetically driven wireless implantable interface polarization-enhanced triboelectric nanogenerator for promoting neural cell differentiation","authors":"Pengfan Wu, Yang Liu, Fayang Wang, Haitao Zhang, Shiwei Xu, Endian Cui, Tao Liu, Xunlong Shi, Ya Yang, Xiaojing Mu","doi":"10.1016/j.nanoen.2025.110703","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110703","url":null,"abstract":"The advancement of implantable electronic devices has significantly improved medical diagnostics, therapeutics, and regenerative medicine. To realize the trend of unwired, simple-operation and high-safety, electronic implantation. We developed an implantable magnetic driving TENG (IMD-TENG) with a zero-Poisson's-ratio design, which processes a novel biodegradable and biocompatible PVA-chitosan (PVA-CS) aerogel by exploiting interface polarization. The electrical performance of CS-based TENGs, achieving an open circuit voltage of 1431<!-- --> <!-- -->V, and a short circuit current density of 3.88 μA cm<sup>-2</sup>. Leveraging the PVA-CS aerogel's excellent biocompatibility and degradability, IMD-TENG was applied in vivo energy supply and electrical stimulation. The results demonstrated the IMD-TENG's compatibility with biological tissues and stable output, along with positive effects on the growth and neurite elongation of SH-SY5Y neuron cells, promoting neuronal maturation and increased Tau protein expression. This innovative approach provides a new avenue for developing implantable bioelectronic devices, with potential applications in treating neurodegenerative diseases and advancing nerve tissue engineering.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"2 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026803","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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