Pub Date : 2025-02-01DOI: 10.1016/j.nanoen.2024.110567
Ya Cheng , Junjie Ning , Ce Wang , Wendong Zhu , Linxi Hou
As development of Internet of Things, the E-skin sensor urgently needs to break through the constraints of sensing reliability, miniaturization, and portability. Occurrence of smart textile of integrated triboelectric nanogenerator, bring the endless possibility for exploring advanced sensor, which possess inimitable lightweight, permeability, flexibility, and washability. Herein, an all-nanofiber Janus textile with multi-layer structure was fabricated by continuously electrospinning and electrospray technologies, acting as a self-powered E-skin sensor. After triboelectric layer was modified by fluorinated polyurethane, the optimal triboelectric output reach 356 V, 2.88 μA, 80.12 nC, and 2.49 W m−2, which could power small electronics via rectifier circuit. The great sensitivity (6.79 kPa−1), operational stability, and air permeability (1010.55 g m−2•24 h−1) was realized. As a proof-of-concept, an intelligent Janus textile-based system was fabricated, the precise control of robotic hand and accurate identification of material were realized with assistance of electric circuit module and deep learning (one-dimensional convolutional neural networks), which would present tactile identification for further intelligent robotics and human-machine interaction (HMI).
随着物联网的发展，电子皮肤传感器迫切需要突破传感可靠性、小型化、便携性的限制。集成摩擦电纳米发电机智能纺织品的出现，为探索具有无可比拟的轻量化、透气性、柔韧性和耐洗性的先进传感器带来了无限可能。本文采用连续静电纺丝和电喷雾技术制备了一种多层结构的全纳米纤维Janus纺织品，作为自供电的电子皮肤传感器。经氟化聚氨酯改性摩擦电层后，摩擦电输出达到356 V， 2.88 μA, 80.12 nC, 2.49 W m-2，可通过整流电路为小型电子设备供电。实现了高灵敏度（9.17 kPa-1）、工作稳定性和透气性（1010.55 g m-2•24 h-1）。在概念验证的基础上，制作了基于Janus纺织品的智能系统，借助电路模块和深度学习（一维卷积神经网络）实现了机械手的精确控制和材料的准确识别，为进一步的智能机器人和人机交互（HMI）提供触觉识别。
{"title":"Self-powered all-nanofiber Janus textile E-skin sensor with air permeability and anti-fouling for human–machine interactions","authors":"Ya Cheng , Junjie Ning , Ce Wang , Wendong Zhu , Linxi Hou","doi":"10.1016/j.nanoen.2024.110567","DOIUrl":"10.1016/j.nanoen.2024.110567","url":null,"abstract":"<div><div>As development of Internet of Things, the E-skin sensor urgently needs to break through the constraints of sensing reliability, miniaturization, and portability. Occurrence of smart textile of integrated triboelectric nanogenerator, bring the endless possibility for exploring advanced sensor, which possess inimitable lightweight, permeability, flexibility, and washability. Herein, an all-nanofiber Janus textile with multi-layer structure was fabricated by continuously electrospinning and electrospray technologies, acting as a self-powered E-skin sensor. After triboelectric layer was modified by fluorinated polyurethane, the optimal triboelectric output reach 356 V, 2.88 μA, 80.12 nC, and 2.49 W m<sup>−2</sup>, which could power small electronics via rectifier circuit. The great sensitivity (6.79 kPa<sup>−1</sup>), operational stability, and air permeability (1010.55 g m<sup>−2</sup>•24 h<sup>−1</sup>) was realized. As a proof-of-concept, an intelligent Janus textile-based system was fabricated, the precise control of robotic hand and accurate identification of material were realized with assistance of electric circuit module and deep learning (one-dimensional convolutional neural networks), which would present tactile identification for further intelligent robotics and human-machine interaction (HMI).</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110567"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797498","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.2024.110585
Diandian Han , Wenliang Qin , Mei Qiu , Zhiqiang Zhu , Lin Zhang , Haojie Li , Yanjie Wang , Yongfan Zhang , Lipeng Zhai
3,4-ethylenedioxythiophene (EDOT) unit featuring electron donor and self-structuring properties, has been considered as the conducting polymers resources for organic electronic devices. However, construction of covalent organic frameworks (COFs) with EDOT building blocks has not been reported. Herein, a novel conductive EDOT-based COF (EDOT-Por-COF) with enhanced chemical interaction and conductivity was synthesized as the electrocatalysts accelerating the conversion kinetics of soluble polysulfides. The corresponding EDOT-Por-COF with electron-rich conjugated microenvironment generates higher sulfur affinity and polysulfides catalytic activity, which is further verified by experimental data and density functional theory (DFT) calculations. The introduction of an electron-rich surrounding environment alleviates the tendency of charge loss at Co sites and guarantees an optimized electronic structure around the Co sites, thus improving the adsorption strength and electron transfer between the Co sites and polysulfides, contributing to an improved catalytic capability on polysulfides. As a result, the assembled cell displays a ultrahigh discharge capacity of 1585.9 mAh g−1 at 0.1 C, a low the capacity decay rate of 0.031 % per cycle for 2000 cycles at 1 C and a high rate capacity of 763.9 mAh g−1 at 5 C. This work supports a new insight into electrocatalyst structural regulation to boost the electrochemical performance of Li–S batteries.
3,4-乙烯二氧噻吩（EDOT）单元具有电子给体和自结构的特性，被认为是有机电子器件的导电聚合物资源。然而，用EDOT构建共价有机框架（COFs）尚未见报道。本文合成了一种新型导电的edot基COF (EDOT-Por-COF)，该材料具有增强的化学相互作用和导电性，可作为加速可溶性多硫化物转化动力学的电催化剂。相应的具有富电子共轭微环境的EDOT-Por-COF具有更高的硫亲和性和多硫化物催化活性，实验数据和密度泛函理论（DFT）计算进一步验证了这一点。富电子环境的引入缓解了Co位点的电荷损失趋势，保证了Co位点周围的电子结构优化，从而提高了Co位点与多硫化物之间的吸附强度和电子转移，提高了对多硫化物的催化能力。结果表明，该电池在0.1℃下具有1585.9 mAh g−1的超高放电容量，在1℃下循环2000次，每循环容量衰减率低至0.031%，在5℃下具有763.9 mAh g−1的高倍率容量。这项工作为电催化剂结构调节提高锂硫电池的电化学性能提供了新的见解。
{"title":"Covalent organic frameworks with conductive EDOT unit for superior lithium−sulfur batteries","authors":"Diandian Han , Wenliang Qin , Mei Qiu , Zhiqiang Zhu , Lin Zhang , Haojie Li , Yanjie Wang , Yongfan Zhang , Lipeng Zhai","doi":"10.1016/j.nanoen.2024.110585","DOIUrl":"10.1016/j.nanoen.2024.110585","url":null,"abstract":"<div><div>3,4-ethylenedioxythiophene (EDOT) unit featuring electron donor and self-structuring properties, has been considered as the conducting polymers resources for organic electronic devices. However, construction of covalent organic frameworks (COFs) with EDOT building blocks has not been reported. Herein, a novel conductive EDOT-based COF (EDOT-Por-COF) with enhanced chemical interaction and conductivity was synthesized as the electrocatalysts accelerating the conversion kinetics of soluble polysulfides. The corresponding EDOT-Por-COF with electron-rich conjugated microenvironment generates higher sulfur affinity and polysulfides catalytic activity, which is further verified by experimental data and density functional theory (DFT) calculations. The introduction of an electron-rich surrounding environment alleviates the tendency of charge loss at Co sites and guarantees an optimized electronic structure around the Co sites, thus improving the adsorption strength and electron transfer between the Co sites and polysulfides, contributing to an improved catalytic capability on polysulfides. As a result, the assembled cell displays a ultrahigh discharge capacity of 1585.9 mAh g<sup>−1</sup> at 0.1 C, a low the capacity decay rate of 0.031 % per cycle for 2000 cycles at 1 C and a high rate capacity of 763.9 mAh g<sup>−1</sup> at 5 C. This work supports a new insight into electrocatalyst structural regulation to boost the electrochemical performance of Li–S batteries.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110585"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816410","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.2024.110550
Fangyang Dong , Meixian Zhu , Yulian Wang , Zhixiang Chen , Yingwei Dai , Ziyue Xi , Taili Du , Minyi Xu
In the era of artificial intelligence (AI) and digitization, developing self-monitoring and smart-diagnosis bearings has become a meaningful yet challenging problem. This study investigates an AI-enabled bearing-structural rolling triboelectric nanogenerator (B-TENG), which can achieve condition monitoring and fault diagnosis for bearing wear. The geometrical structure of B-TENG is designed to directly use rolling balls as the freestanding layer. Besides, the sensing principle of triboelectric signal waveforms and the mapping mechanism of wear faults are firstly revealed through a signal decomposition method. Furthermore, a deep learning algorithm can classify different wear types, degrees and positions on rolling balls, with higher accuracies of 95.20∼98.40 % for the feature components. The detection of wear degree related to bearing health and failure evolution is realized for the first time. The proposed B-TENG has the potential for digital twin application via interaction with professional simulation software according to the real-time diagnosis classified by AI.
{"title":"AI-enabled rolling triboelectric nanogenerator for bearing wear diagnosis aiming at digital twin application","authors":"Fangyang Dong , Meixian Zhu , Yulian Wang , Zhixiang Chen , Yingwei Dai , Ziyue Xi , Taili Du , Minyi Xu","doi":"10.1016/j.nanoen.2024.110550","DOIUrl":"10.1016/j.nanoen.2024.110550","url":null,"abstract":"<div><div>In the era of artificial intelligence (AI) and digitization, developing self-monitoring and smart-diagnosis bearings has become a meaningful yet challenging problem. This study investigates an AI-enabled bearing-structural rolling triboelectric nanogenerator (B-TENG), which can achieve condition monitoring and fault diagnosis for bearing wear. The geometrical structure of B-TENG is designed to directly use rolling balls as the freestanding layer. Besides, the sensing principle of triboelectric signal waveforms and the mapping mechanism of wear faults are firstly revealed through a signal decomposition method. Furthermore, a deep learning algorithm can classify different wear types, degrees and positions on rolling balls, with higher accuracies of 95.20∼98.40 % for the feature components. The detection of wear degree related to bearing health and failure evolution is realized for the first time. The proposed B-TENG has the potential for digital twin application via interaction with professional simulation software according to the real-time diagnosis classified by AI.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110550"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782898","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.2024.110534
Fei Wu , Liangju Zhao , Lei Wang , Lingling Xie , Qing Han , Xuejing Qiu , Xiaoyu Cao , Limin Zhu
Organic electrode materials are expected to be promising candidates for secondary batteries due to their high capacity, abundant resources, low cost, and structural controllability. Currently, organic electrode materials have been applied in various metal-ion battery systems, but their commercial application is still hindered by a number of issues, including low redox potential, low intrinsic conductivity, and solubility in organic electrolysis. To address the technological bottleneck of organic electrode materials, the modification of organic molecular structure and the improvement of experimental conditions have received considerable attention. This paper reviews the recent research progress, and introduces the redox mechanism and basic properties of organic carbonyl compounds. Finally, it summarizes the current challenges and possible development directions of organic carbonyl compounds, providing a reference for the design and optimization of organic electrode materials in the future.
{"title":"Progress of organic carbonyl compounds as electrode materials for sodium−ion batteries","authors":"Fei Wu , Liangju Zhao , Lei Wang , Lingling Xie , Qing Han , Xuejing Qiu , Xiaoyu Cao , Limin Zhu","doi":"10.1016/j.nanoen.2024.110534","DOIUrl":"10.1016/j.nanoen.2024.110534","url":null,"abstract":"<div><div>Organic electrode materials are expected to be promising candidates for secondary batteries due to their high capacity, abundant resources, low cost, and structural controllability. Currently, organic electrode materials have been applied in various metal-ion battery systems, but their commercial application is still hindered by a number of issues, including low redox potential, low intrinsic conductivity, and solubility in organic electrolysis. To address the technological bottleneck of organic electrode materials, the modification of organic molecular structure and the improvement of experimental conditions have received considerable attention. This paper reviews the recent research progress, and introduces the redox mechanism and basic properties of organic carbonyl compounds. Finally, it summarizes the current challenges and possible development directions of organic carbonyl compounds, providing a reference for the design and optimization of organic electrode materials in the future.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110534"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760639","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.2024.110524
Yangyang Song , Yiqun Zhang , Sijian Lin , Zhiming Long , Sitong Chen , Haoyu Tan , Zhuqing Wang , Xiaodong Wu
Current smart wearables typically necessitate three key elements including sensing units, signal processing circuits, and power supplying units, leading to complex system configuration, large system volume, and high power consumption. Here, we bypass this canonical form by developing a new device modality with both mechanotransduction and power supplying (MPS) functions, which enables to facilely construct highly compact and fully self-powered smart wearables with much improved energy efficiency. The MPS devices are engineered by synergistic fusion of an all-solid-state power supplying unit with an associated passive mechanotransduction element, resulting in a monolithic, compact, and versatile device modality. More imporatantly, the mechanotransduction and power supplying functions can work independently from each other, allowing the MPS devices to continuously monitor external mechanical stimulations and, simultaneously, to provide stable power for external circuitry. As demonstrations, fully isolated, autonomous, and self-powered smart wearables with much reduced power consumption (≈48 % less than conventional systems) can be facilely constructed just by connecting an MPS device to a custom-designed circuit for wireless monitoring and on-site analysis of diverse human vital signals. This study provides a new design philosophy and methodology to create smart wearables with reduced system complexity, improved energy efficiency, and enhanced deployment convenience.
{"title":"Synergistic fusion of mechanotransduction and power supplying functions towards highly compact and fully self-powered smart wearables","authors":"Yangyang Song , Yiqun Zhang , Sijian Lin , Zhiming Long , Sitong Chen , Haoyu Tan , Zhuqing Wang , Xiaodong Wu","doi":"10.1016/j.nanoen.2024.110524","DOIUrl":"10.1016/j.nanoen.2024.110524","url":null,"abstract":"<div><div>Current smart wearables typically necessitate three key elements including sensing units, signal processing circuits, and power supplying units, leading to complex system configuration, large system volume, and high power consumption. Here, we bypass this canonical form by developing a new device modality with both mechanotransduction and power supplying (MPS) functions, which enables to facilely construct highly compact and fully self-powered smart wearables with much improved energy efficiency. The MPS devices are engineered by synergistic fusion of an all-solid-state power supplying unit with an associated passive mechanotransduction element, resulting in a monolithic, compact, and versatile device modality. More imporatantly, the mechanotransduction and power supplying functions can work independently from each other, allowing the MPS devices to continuously monitor external mechanical stimulations and, simultaneously, to provide stable power for external circuitry. As demonstrations, fully isolated, autonomous, and self-powered smart wearables with much reduced power consumption (≈48 % less than conventional systems) can be facilely constructed just by connecting an MPS device to a custom-designed circuit for wireless monitoring and on-site analysis of diverse human vital signals. This study provides a new design philosophy and methodology to create smart wearables with reduced system complexity, improved energy efficiency, and enhanced deployment convenience.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110524"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718905","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}
Conventional Ti3C2Tx MXene-based actuators, due to their lack of human-like self-perception capability, have hindered soft robots from progressing toward intelligent robot-environment interactions. Strategies to reconcile environmental stimulus-response actuation and self-powered multi-modal intelligent perception remain challenging. Here, we have designed a flexible actuator with a P-N couple structure. Wherein, the Ti3C2Tx MXene-chitin nanofibers (MCHF) composite film prepared by vacuum-assisted self-assembly was utilized as the N-type photothermal layer, and the PEDOT:PSS/PET film was utilized as the P-type thermal-expansion layer. Based on the thermoelectric and electronegative properties of the MCHF composite film, we propose two strategies to combine the light-driven actuation mechanism with the photo-thermoelectric effect (PTE) and triboelectric effect to endow the light-driven actuator perception capabilities. Based on the PTE effect, the MCHF-based bilayer film can be directly utilized as a PTE generator (Seebeck coefficient of 23.3 μV K−1) to simultaneously achieve light-driven actuation and self-powered relative-temperature perception. When utilized as a triboelectric electrode (maximum output voltage of 144.7 V), the MCHF layer can trigger the triboelectric effect with the actuation force of the light-driven actuator, thus realizing self-powered material perception. Finally, we demonstrated an intelligent gripper capable of synergizing light-driven actuation and self-powered multi-modal perception by compactly integrating these two strategies, which can recognize susceptible signals accurately (accuracy of 98 %) with the assistance of a neural network. This work is promising to facilitate the intelligent interaction of Ti3C2Tx MXene-based soft robots with variable environments.
{"title":"2D Ti3C2Tx MXene-based light-driven actuator with integrated structure for self-powered multi-modal intelligent perception assisted by neural network","authors":"Jiahao Zhou , Huamin Chen , Zhihao Wu , Peidi Zhou , Minghua You , Chan Zheng , Qiaohang Guo , Zhou Li , Mingcen Weng","doi":"10.1016/j.nanoen.2024.110552","DOIUrl":"10.1016/j.nanoen.2024.110552","url":null,"abstract":"<div><div>Conventional Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-based actuators, due to their lack of human-like self-perception capability, have hindered soft robots from progressing toward intelligent robot-environment interactions. Strategies to reconcile environmental stimulus-response actuation and self-powered multi-modal intelligent perception remain challenging. Here, we have designed a flexible actuator with a P-N couple structure. Wherein, the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-chitin nanofibers (MCHF) composite film prepared by vacuum-assisted self-assembly was utilized as the N-type photothermal layer, and the PEDOT:PSS/PET film was utilized as the P-type thermal-expansion layer. Based on the thermoelectric and electronegative properties of the MCHF composite film, we propose two strategies to combine the light-driven actuation mechanism with the photo-thermoelectric effect (PTE) and triboelectric effect to endow the light-driven actuator perception capabilities. Based on the PTE effect, the MCHF-based bilayer film can be directly utilized as a PTE generator (Seebeck coefficient of 23.3 μV K<sup>−1</sup>) to simultaneously achieve light-driven actuation and self-powered relative-temperature perception. When utilized as a triboelectric electrode (maximum output voltage of 144.7 V), the MCHF layer can trigger the triboelectric effect with the actuation force of the light-driven actuator, thus realizing self-powered material perception. Finally, we demonstrated an intelligent gripper capable of synergizing light-driven actuation and self-powered multi-modal perception by compactly integrating these two strategies, which can recognize susceptible signals accurately (accuracy of 98 %) with the assistance of a neural network. This work is promising to facilitate the intelligent interaction of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-based soft robots with variable environments.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110552"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816407","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.2024.110593
Ji Yun Jung , Hyun Soo Kim , Chang Min Baek , Seungah Lee , Yuho Min , Hyun-Cheol Song , Jungho Ryu
The reported research on Mechano-luminescence (ML) has primarily focused on enhancing luminescence by optimizing mechanical energy for luminescence by employing various structural deformations of ML composites in response to mechanical stress. In contrast, this study demonstrates the innovative use of ambient magnetic fields to drive a lighting device without any external electrical source. This approach involves the simultaneous application of magnetically induced mechanical vibrations and a self-generated electric potential in the same periodic time. Our magnetically driven lighting device comprises a sheet-shaped ML composite consisting of ZnS:Cu particles embedded within a polydimethylsiloxane (PDMS) elastomer, along with a magnetically vibrating cantilever beam incorporating a 32-mode piezoelectric single crystal fiber composite (SFC). This structure forms a magneto-mechano-electric (MME) generator, capable of simultaneously applying mechanical stress and electrical potential to the ML composite under second harmonic bending vibration. Notably, the MME generator in second harmonic vibration mode responds to ambient magnetic field oscillations, inducing electric potential within the SFC. When the projection part of the MME generator contacts the ML composite, the induced electric potential supplies additional electrons to the ML material. This influx of electrons facilitates greater recombination within the ML composite, thereby enhancing luminescence efficiency. Our results indicate a 240 % improvement in luminescence efficiency when both mechanical and electrical energies are applied simultaneously compared to when only mechanical energy is utilized. When tested in a real-world environment at 60 Hz, the magnetically driven lighting device emits visible light without requiring any additional electrical power source.
已报道的机械发光（ML）研究主要集中在通过优化机械能来增强发光，方法是利用 ML 复合材料的各种结构变形来响应机械应力。相比之下，本研究展示了如何创新性地利用环境磁场来驱动照明设备，而无需任何外部电源。这种方法涉及在同一周期内同时应用磁感应机械振动和自生电动势。我们的磁驱动照明设备由片状 ML 复合材料和磁振动悬臂梁组成，前者由嵌入聚二甲基硅氧烷（PDMS）弹性体中的 ZnS:Cu 颗粒组成，后者则包含 32 模压电单晶纤维复合材料（SFC）。这种结构形成了一个磁-机-电（MME）发生器，能够在二次谐波弯曲振动下同时向 ML 复合材料施加机械应力和电动势。值得注意的是，在二次谐波振动模式下，MME 发生器会对环境磁场振荡做出响应，从而在 SFC 内产生电动势。当 MME 发生器的投影部分接触到 ML 复合材料时，感应电动势会向 ML 材料提供额外的电子。电子的涌入促进了 ML 复合材料内部更大的重组，从而提高了发光效率。我们的研究结果表明，同时使用机械能和电能时，发光效率比只使用机械能时提高了 240%。在 60 赫兹的实际环境中进行测试时，磁驱动照明装置无需任何额外的电源即可发出可见光。
{"title":"Boosting the luminescence performance of magneto-mechano-luminescence devices by leveraging self-generated electric potentials","authors":"Ji Yun Jung , Hyun Soo Kim , Chang Min Baek , Seungah Lee , Yuho Min , Hyun-Cheol Song , Jungho Ryu","doi":"10.1016/j.nanoen.2024.110593","DOIUrl":"10.1016/j.nanoen.2024.110593","url":null,"abstract":"<div><div>The reported research on Mechano-luminescence (ML) has primarily focused on enhancing luminescence by optimizing mechanical energy for luminescence by employing various structural deformations of ML composites in response to mechanical stress. In contrast, this study demonstrates the innovative use of ambient magnetic fields to drive a lighting device without any external electrical source. This approach involves the simultaneous application of magnetically induced mechanical vibrations and a self-generated electric potential in the same periodic time. Our magnetically driven lighting device comprises a sheet-shaped ML composite consisting of ZnS:Cu particles embedded within a polydimethylsiloxane (PDMS) elastomer, along with a magnetically vibrating cantilever beam incorporating a 32-mode piezoelectric single crystal fiber composite (SFC). This structure forms a magneto-mechano-electric (MME) generator, capable of simultaneously applying mechanical stress and electrical potential to the ML composite under second harmonic bending vibration. Notably, the MME generator in second harmonic vibration mode responds to ambient magnetic field oscillations, inducing electric potential within the SFC. When the projection part of the MME generator contacts the ML composite, the induced electric potential supplies additional electrons to the ML material. This influx of electrons facilitates greater recombination within the ML composite, thereby enhancing luminescence efficiency. Our results indicate a 240 % improvement in luminescence efficiency when both mechanical and electrical energies are applied simultaneously compared to when only mechanical energy is utilized. When tested in a real-world environment at 60 Hz, the magnetically driven lighting device emits visible light without requiring any additional electrical power source.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110593"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841545","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.2024.110556
Eric Gabriel , Pengbo Wang , Kincaid Graff , Shelly D. Kelly , Chengjun Sun , Changjian Deng , Inhui Hwang , Jue Liu , Cheng Li , Sarah Kuraitis , Jehee Park , Eungje Lee , Angel Conrado , Julie Pipkin , Max Cook , Stephanie McCallum , Yingying Xie , Zonghai Chen , Kamila M. Wiaderek , Andrey Yakovenko , Hui Xiong
The layered NaTMO2 (TM = Ni, Fe, Mn) materials with the O3-type structure are attractive as positive electrodes for sodium ion batteries because of their high theoretical capacity. Additionally, Li doping in these materials has been shown to offer substantial enhancements to their electrochemical properties by promoting the formation of intergrowth structures, which intimately integrate the substituent phases. However, the influence of the specific Li content on the structural and electrochemical properties of the intergrowth materials requires investigation. Systematic variation of Li content in NaxLiyNi0.4Fe0.2Mn0.4O2 (NFM-Liy) was conducted to identify the role of Li in modification of the intergrowth structure and electrochemical performance. Li contents of 0.15 and greater generate a layered/layered Na-O3/Li-O’3 intergrowth structure. 7Li and 23Na solid-state nuclear magnetic resonance and x-ray absorption spectroscopy identify that when the total solubility for alkali ions in the layered structure is exceeded, Li continues to form the Li-O’3 phase while the excess Na forms residual sodium compounds such as Na2O. Higher Li content is associated with improved capacity retention in the initial cycles from the superior stability of the mechanically linked Na-O3/Li-O’3 structure that suppresses the P3 to OP2 phase transition during charge. However, high Li contents are associated with increased rates of parasitic side reactions that reduce long-term cycling stability. These side reactions are connected to the instability of the cathode-electrolyte interphase, which can be partially mitigated by atomic layer deposition (ALD) coating with alumina, which significantly enhances the capacity retention and Coulombic efficiency. Overall, we find that the layered/layered Na-O3/Li-O’3 intergrowth structure is able to provide structural stability and suppress undesired phase transformations but is overwhelmed by the increased reactivity of the surface if not protected by surface coating.
具有o3型结构的层状NaTMO2 （TM = Ni, Fe, Mn）材料具有较高的理论容量，是钠离子电池正极的理想材料。此外，在这些材料中掺杂Li已被证明通过促进相互生长结构的形成，从而使取代相紧密结合，从而大大增强了它们的电化学性能。然而，比锂含量对复合材料结构和电化学性能的影响还有待进一步研究。研究了NaxLiyNi0.4Fe0.2Mn0.4O2 （NFM-Liy）中Li含量的系统变化，以确定Li对互生结构和电化学性能的影响。当Li含量大于0.15时，形成层状/层状的Na-O3/Li- o ' 3共生结构。7Li和23Na核磁共振和x射线吸收光谱鉴定，当超过层状结构中碱离子的总溶解度时，Li继续形成Li- o ' 3相，而过量的Na形成残留的钠化合物，如Na2O。由于机械连接的Na-O3/Li- o ' 3结构具有优异的稳定性，从而抑制了充电过程中P3到OP2的相变，因此较高的Li含量与初始循环中容量保持率的提高有关。然而，高锂含量与降低长期循环稳定性的寄生副反应率增加有关。这些副反应与阴极-电解质界面的不稳定性有关，氧化铝原子层沉积（ALD）涂层可以部分减轻这种不稳定性，从而显著提高容量保留和库仑效率。总的来说，我们发现层状/层状Na-O3/Li-O ' 3共生结构能够提供结构稳定性并抑制不希望的相变，但如果没有表面涂层的保护，则会被表面反应性的增加所淹没。
{"title":"The role of Li doping in layered/layered NaxLiyNi0.4Fe0.2Mn0.4O2 intergrowth electrodes for sodium ion batteries","authors":"Eric Gabriel , Pengbo Wang , Kincaid Graff , Shelly D. Kelly , Chengjun Sun , Changjian Deng , Inhui Hwang , Jue Liu , Cheng Li , Sarah Kuraitis , Jehee Park , Eungje Lee , Angel Conrado , Julie Pipkin , Max Cook , Stephanie McCallum , Yingying Xie , Zonghai Chen , Kamila M. Wiaderek , Andrey Yakovenko , Hui Xiong","doi":"10.1016/j.nanoen.2024.110556","DOIUrl":"10.1016/j.nanoen.2024.110556","url":null,"abstract":"<div><div>The layered NaTMO<sub>2</sub> (TM = Ni, Fe, Mn) materials with the O3-type structure are attractive as positive electrodes for sodium ion batteries because of their high theoretical capacity. Additionally, Li doping in these materials has been shown to offer substantial enhancements to their electrochemical properties by promoting the formation of intergrowth structures, which intimately integrate the substituent phases. However, the influence of the specific Li content on the structural and electrochemical properties of the intergrowth materials requires investigation. Systematic variation of Li content in Na<sub>x</sub>Li<sub>y</sub>Ni<sub>0.4</sub>Fe<sub>0.2</sub>Mn<sub>0.4</sub>O<sub>2</sub> (NFM-Li<sub>y</sub>) was conducted to identify the role of Li in modification of the intergrowth structure and electrochemical performance. Li contents of 0.15 and greater generate a layered/layered Na-O3/Li-O’3 intergrowth structure. <sup>7</sup>Li and <sup>23</sup>Na solid-state nuclear magnetic resonance and x-ray absorption spectroscopy identify that when the total solubility for alkali ions in the layered structure is exceeded, Li continues to form the Li-O’3 phase while the excess Na forms residual sodium compounds such as Na<sub>2</sub>O. Higher Li content is associated with improved capacity retention in the initial cycles from the superior stability of the mechanically linked Na-O3/Li-O’3 structure that suppresses the P3 to OP2 phase transition during charge. However, high Li contents are associated with increased rates of parasitic side reactions that reduce long-term cycling stability. These side reactions are connected to the instability of the cathode-electrolyte interphase, which can be partially mitigated by atomic layer deposition (ALD) coating with alumina, which significantly enhances the capacity retention and Coulombic efficiency. Overall, we find that the layered/layered Na-O3/Li-O’3 intergrowth structure is able to provide structural stability and suppress undesired phase transformations but is overwhelmed by the increased reactivity of the surface if not protected by surface coating.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110556"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788626","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.2024.110545
Han He , Qixing Zhang , Sihan Li , Zhongke Wang , Jia Zhao , Jingshan Luo , Ying Zhao , Xiaodan Zhang
Exploring electrocatalysts with high-valence metal sites is crucial to accelerate oxygen evolution reaction (OER), yet it encounters challenges arising from thermodynamic formation barriers. We have in-situ constructed a multi-defective Ce³ ⁺-Ov-M active interface through a dynamic interface defect integration strategy, regulating the ionic conductivity and the formation barrier of high-valence Ni and achieving an ultralow overpotential of 155 mV at 10 mA cm−2 current density for OER. The recordings from in-situ Raman and UV-Vis spectroscopy illustrate that the modulated catalyst facilitates a cathodic shift in the transition potential for forming γ-NiOOH. Theoretical calculations have confirmed the mechanism, indicating that defect-engineering at the heterointerface leads to electron localization, lower d-band centers enhance the electron distribution at metal active centers, and activate lattice oxygen for efficient water oxidation. This property extended to hydrogen evolution catalysts also exhibits high versatility. Perovskite/crystalline silicon tandem solar cells are used to drive the electrolytic assembly system to achieve 21.01 % solar hydrogen conversion efficiency.
探索具有高价位金属的电催化剂是加速析氧反应（OER）的关键，但它面临着热力学生成障碍带来的挑战。我们通过动态界面缺陷集成策略，原位构建了一个多缺陷Ce + -Ov-M活性界面，调节了离子电导率和高价Ni的形成势垒，实现了OER在10 mA cm-2电流密度下155 mV的超低过电位。现场拉曼光谱和紫外可见光谱的记录表明，调制催化剂促进了形成γ-NiOOH的转变电位的阴极位移。理论计算证实了这一机制，表明异质界面缺陷工程导致电子局域化，较低的d带中心增强了金属活性中心的电子分布，激活了晶格氧，实现了高效的水氧化。这种性质延伸到析氢催化剂上也表现出很高的通用性。采用钙钛矿/晶体硅串联太阳能电池驱动电解装配系统，实现21.01%的太阳能氢转换效率。
{"title":"Modulating metal activation energy via cerium-mediated heterointerface defect evolution for photovoltaic-driven efficient water electrolysis","authors":"Han He , Qixing Zhang , Sihan Li , Zhongke Wang , Jia Zhao , Jingshan Luo , Ying Zhao , Xiaodan Zhang","doi":"10.1016/j.nanoen.2024.110545","DOIUrl":"10.1016/j.nanoen.2024.110545","url":null,"abstract":"<div><div>Exploring electrocatalysts with high-valence metal sites is crucial to accelerate oxygen evolution reaction (OER), yet it encounters challenges arising from thermodynamic formation barriers. We have in-situ constructed a multi-defective Ce³ ⁺-O<sub>v</sub>-M active interface through a dynamic interface defect integration strategy, regulating the ionic conductivity and the formation barrier of high-valence Ni and achieving an ultralow overpotential of 155 mV at 10 mA cm<sup>−2</sup> current density for OER. The recordings from in-situ Raman and UV-Vis spectroscopy illustrate that the modulated catalyst facilitates a cathodic shift in the transition potential for forming γ-NiOOH. Theoretical calculations have confirmed the mechanism, indicating that defect-engineering at the heterointerface leads to electron localization, lower d-band centers enhance the electron distribution at metal active centers, and activate lattice oxygen for efficient water oxidation. This property extended to hydrogen evolution catalysts also exhibits high versatility. Perovskite/crystalline silicon tandem solar cells are used to drive the electrolytic assembly system to achieve 21.01 % solar hydrogen conversion efficiency.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110545"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777132","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.2024.110542
Qizheng Li , Xiaoxiong Wang , Lifeng Cao , Lei Chen , Hongfei Xiang
Nanogenerators are devices that convert mechanical energy into electrical energy, which are widely used in wearable and health fields. Nanogenerators use the mechanical energy generated by human motion to drive nanogenerators to achieve biomedical applications or health monitoring. In this process, nanogenerators typically harness the triboelectric or piezoelectric effect to generate electrical energy, allowing efficient energy conversion even with small mechanical inputs from human motion. In human organs, bone, as a rigid support, often preserves a large amount of kinetic energy and is the organ with the most abundant residual energy. By collecting this kinetic energy from bones, nanogenerators can provide a consistent, low-power energy source, suitable for sustaining the long-term operation of small electronic devices. The related electrical signals can also be used to monitor the motion posture information of bones, joints, tendons, and other positions. Here, the application of nanogenerators in orthopedics is reviewed, and its typical application scenarios include in vivo and in vitro. In vivo applications are mainly sensing and accelerating tissue regeneration, while in vitro are mainly wearable sensing. On the basis of summarizing these classification applications, the problems and prospects of nanogenerators in orthopedic applications are also proposed.
{"title":"Recent advances in the application of nanogenerators in orthopedics: From body surface to implantation","authors":"Qizheng Li , Xiaoxiong Wang , Lifeng Cao , Lei Chen , Hongfei Xiang","doi":"10.1016/j.nanoen.2024.110542","DOIUrl":"10.1016/j.nanoen.2024.110542","url":null,"abstract":"<div><div>Nanogenerators are devices that convert mechanical energy into electrical energy, which are widely used in wearable and health fields. Nanogenerators use the mechanical energy generated by human motion to drive nanogenerators to achieve biomedical applications or health monitoring. In this process, nanogenerators typically harness the triboelectric or piezoelectric effect to generate electrical energy, allowing efficient energy conversion even with small mechanical inputs from human motion. In human organs, bone, as a rigid support, often preserves a large amount of kinetic energy and is the organ with the most abundant residual energy. By collecting this kinetic energy from bones, nanogenerators can provide a consistent, low-power energy source, suitable for sustaining the long-term operation of small electronic devices. The related electrical signals can also be used to monitor the motion posture information of bones, joints, tendons, and other positions. Here, the application of nanogenerators in orthopedics is reviewed, and its typical application scenarios include in vivo and in vitro. In vivo applications are mainly sensing and accelerating tissue regeneration, while in vitro are mainly wearable sensing. On the basis of summarizing these classification applications, the problems and prospects of nanogenerators in orthopedic applications are also proposed.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"134 ","pages":"Article 110542"},"PeriodicalIF":16.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788625","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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