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Moisture‑Electric–Moisture‑Sensitive Heterostructure Triggered Proton Hopping for Quality‑Enhancing Moist‑Electric Generator
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作者 Ya’nan Yang Jiaqi Wang +11 位作者 Zhe Wang changxiang shao Yuyang Han Ying Wang Xiaoting Liu Xiaotong Sun Liru Wang Yuanyuan Li Qiang Guo Wenpeng Wu Nan Chen Liangti Qu 《Nano-Micro Letters》 SCIE EI CSCD 2024年第3期351-366,共16页
Moisture-enabled electricity(ME)is a method of converting the potential energy of water in the external environment into electrical energy through the interaction of functional materials with water molecules and can b... Moisture-enabled electricity(ME)is a method of converting the potential energy of water in the external environment into electrical energy through the interaction of functional materials with water molecules and can be directly applied to energy harvesting and signal expression.However,ME can be unreliable in numerous applications due to its sluggish response to moisture,thus sacrificing the value of fast energy harvesting and highly accurate information representation.Here,by constructing a moisture-electric-moisture-sensitive(ME-MS)heterostructure,we develop an efficient ME generator with ultra-fast electric response to moisture achieved by triggering Grotthuss protons hopping in the sensitized ZnO,which modulates the heterostructure built-in interfacial potential,enables quick response(0.435 s),an unprecedented ultra-fast response rate of 972.4 mV s^(−1),and a durable electrical signal output for 8 h without any attenuation.Our research provides an efficient way to generate electricity and important insight for a deeper understanding of the mechanisms of moisture-generated carrier migration in ME generator,which has a more comprehensive working scene and can serve as a typical model for human health monitoring and smart medical electronics design. 展开更多
关键词 Moist-electric generators Grotthuss proton hopping Fast response Durable electrical output Personal health monitoring
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水的气-液相转变获取电能研究进展
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作者 邵长香 曲良体 《物理化学学报》 SCIE CAS CSCD 北大核心 2023年第10期54-74,共21页
气态水和液态水自发相变过程中蕴含巨大能量,可通过新兴的湿气产电和蒸发产电两种水伏技术进行收集。湿气产电和蒸发产电具有来源广泛、高度自发、性能优异、绿色环保等优点,极大增强了从自然水循环中收集电能的能力。鉴于此,本文综述... 气态水和液态水自发相变过程中蕴含巨大能量,可通过新兴的湿气产电和蒸发产电两种水伏技术进行收集。湿气产电和蒸发产电具有来源广泛、高度自发、性能优异、绿色环保等优点,极大增强了从自然水循环中收集电能的能力。鉴于此,本文综述了湿气产电/蒸发产电的研究进展。通过分析固-液界面相互作用,对产电机制进行了讨论和综合评价。详细介绍了当前用于产电的纳米材料体系,并对器件结构和优化策略分别进行了总结。此外,概述产电器件在直接供能、自供电传感、电子元件等领域中的应用。最后,分析产电技术面临的主要挑战和未来方向,以期为高性能产电器件构建提供有价值的研究思路。 展开更多
关键词 固-液相互作用 纳米材料 湿气产电 蒸发产电 器件优化
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Multifunctional high-performance pressure/proximity/temperature sensors enabled by hybrid resistive-supercapacitive response
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作者 Huijun Kong Zhongqian Song +6 位作者 Meichun Ding changxiang shao Jiahui Yu Baolei Wang Weiyan Li Chenwei Li Li Niu 《Nano Research》 SCIE EI CSCD 2024年第6期5604-5613,共10页
The issue of sensitivity attenuation in high-pressure region has been a persistent concern for pressure-sensitive electronic skins.In order to tackle such trade-off between sensitivity and linear range,herein,a hybrid... The issue of sensitivity attenuation in high-pressure region has been a persistent concern for pressure-sensitive electronic skins.In order to tackle such trade-off between sensitivity and linear range,herein,a hybrid piezoresistive-supercapacitive(HRSC)strategy is proposed via introducing a piezoresistive porous aerogel layer between the charge collecting electrodes and iontronic films of the pressure sensors.Surprisingly,the HRSC-induced impedance regulation and supercapacitive behavior contribute to significant mitigation in sensitivity attenuation,achieving high sensitivity across wide linear range(44.58 kPa^(−1)from 0 to 3 kPa and 23.6 kPa^(−1)from 3 to 12 kPa).The HRSC pressure sensor exhibits a low detection limit of 1 Pa,fast responsiveness(~130 ms),and excellent cycling stability,allowing to detect tiny pressure of air flow,finger bending,and human respiration.Meanwhile,the HRSC sensor exhibits exceptional perception capabilities for proximity and temperature,broadening its application scenarios in prosthetic perception and electronic skin.The proposed HRSC strategy may boost the ongoing research on structural design of high-performance and multimodal electronic sensors. 展开更多
关键词 multimodal sensor pressure sensor high sensitivity MXene/poly(3 4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)aerogel structural design
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Recent advances in highly integrated energy conversion and storage system 被引量:7
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作者 changxiang shao Yang Zhao Liangti Qu 《SusMat》 2022年第2期142-160,共19页
The vigorous development in the field of energy conversion and storage devices directly contributes to the full utilization and convenient use of clean energy.However,some drawbacks of independent energy conversion an... The vigorous development in the field of energy conversion and storage devices directly contributes to the full utilization and convenient use of clean energy.However,some drawbacks of independent energy conversion and storage devices,including unstable,insufficient energy output and dependence on external power supply,are difficult to overcome by self-optimization,thus,hindering their further development and direct application.Coincidentally,the combination of above two devices can solve these problems,which conforms to their intrinsic needs for development.At the same time,the pursuit of portability and miniaturization also promotes the development of the power system toward a highly integrated direction.Therefore,we introduce several integration modes of energy conversion and storage systems,with emphasis on all-in-one power system,possessing the highest integration in this review.From the aspect of device configuration,working mechanisms and their performances,the all-inone power systems based on different energy sources(e.g.,mechanical,solar,thermal,and chemical energy)are discussed and analyzed.Finally,the design strategies are summarized and the potential development directions in the future are proposed.This review aims to provide a comprehensive overview of highly integrated energy conversion and storage system,and seeks to point out the opportunities and orientations of future research in this field. 展开更多
关键词 ALL-IN-ONE energy conversion energy storage high integration power system
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来自于水和石墨烯间的能量 被引量:2
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作者 纪冰雪 陈南 +3 位作者 张国峰 许同 邵长香 曲良体 《科学通报》 EI CAS CSCD 北大核心 2018年第27期2806-2817,共12页
石墨烯材料在能量存储和能量转换方面显示出巨大的潜力,如电池、超级电容器、驱动器、产电器件等.其中,石墨烯基材料水力生电这一新能源的发现与开发成为近两年来的研究热点之一.本文总结了本课题组和国内外相关研究组在石墨烯组装和水... 石墨烯材料在能量存储和能量转换方面显示出巨大的潜力,如电池、超级电容器、驱动器、产电器件等.其中,石墨烯基材料水力生电这一新能源的发现与开发成为近两年来的研究热点之一.本文总结了本课题组和国内外相关研究组在石墨烯组装和水力生电相关应用方面的重大进展,包括不同结构的石墨烯的组装和加工及其在水力生电、产能领域的应用,如湿气产电、水蒸发诱导产电、湿气响应驱动器等.本文旨在增强对水伏纳米器件的认识,希望对将来石墨烯基材料水力生电的研究有指导意义. 展开更多
关键词 石墨烯 组装与加工 机械性响应 产电
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Preparation of sulfur-doped graphene fibers and their application in flexible fibriform micro-supercapacitors 被引量:1
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作者 Bin CAI changxiang shao +2 位作者 Liangti QU Yuning MENG Lin JIN 《Frontiers of Materials Science》 SCIE CSCD 2019年第2期145-155,共11页
A novel type of sulfur-doped graphene fibers (S-GFs) were prepared by the hydrothermal strategy, the in situ interfacial polymerization method and the annealing method. Two S-GFs were assembled into an all-solid-state... A novel type of sulfur-doped graphene fibers (S-GFs) were prepared by the hydrothermal strategy, the in situ interfacial polymerization method and the annealing method. Two S-GFs were assembled into an all-solid-state fibriform micro-supercapacitor (micro-SC) that is flexible and has a high specific capacitance (4.55 mF·cm^-2) with the current density of 25.47 pA·cm^-2. The cyclic voltammetry (CV) curve of this micro-SC kept the rectangular shape well even when the scan rate reached 2 V·s^-1. There is a great potential for this type of S-GFs used in flexible wearable electronics. 展开更多
关键词 GRAPHENE fiber SULFUR doping wearable electronics FLEXIBLE SUPERCAPACITOR micro-supercapacitor
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Graphene Oxide Assemblies for Sustainable Clean-Water Harvesting and Green-Electricity Generation 被引量:2
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作者 Yaxin Huang Chengzhi Wang +5 位作者 changxiang shao Boyu Wang Nan Chen Haibo Jin Huhu Cheng Liangti Qu 《Accounts of Materials Research》 2021年第2期97-107,共11页
CONSPECTUS:The urgent problems of water scarcity and the energy crisis have given rise to the development of a range of sustainable technologies with the great advancement of nanotechnologies and advent of attractive ... CONSPECTUS:The urgent problems of water scarcity and the energy crisis have given rise to the development of a range of sustainable technologies with the great advancement of nanotechnologies and advent of attractive nanomaterials.Graphene oxides(GO),a derivative of graphene with an atom-thin thickness and abundant oxygen-containing functional groups(such as−OH,−COOH),are water-soluble and can be assembled into a variety of structures(such as fiber,membrane,and foam)with great potential in environmental and energy-related fields.As a typical precursor of graphene,GO can be easily reduced to graphene by chemical or thermal treatments to demonstrate excellent photothermal properties as well as tunable thermal conduction,which is highly desirable for efficient solar-driven water evaporation.The intrinsic large specific area of GO nanosheets can provide enough sites for ions adsorption and its porous assemblies facilitate the transport of water.In addition,the abundant functional groups allow the spontaneous adsorption of water molecules from the ambient environment and give birth to movable ions(usually protons)under the solvation effect.Once a chemical gradient is formed on the component,a remarkable electricity is generated from the directional transport of protons.Thanks to the excellent chemical properties of GO nanosheets,a wide range of assemblies with 1D aligned fibers,2D layered membranes and 3D porous foam can be easily fabricated by wet-spinning,solution-filtration,and freezingdrying methods.The various GO assemblies are able to exhibit abundant functions with remarkable weaving capability for GO fibers,superior flexibility for GO membranes,and exceptional adsorption capacity for GO foams.In light of all the advantages,GO and its assemblies are remarkably promising in the fields of sustainable development to meet the pressing challenges of water and energy crisis.In this Account,we will discuss the progress of clean-water production and green-electricity generation technologies based on GO assemblies.The fundamental working mechanism,optimization strategies,and promising applications are explored with an emphasis on the materials development.We also discuss the functions of GO assemblies in the water and electricity generation process and present their limitations and possible solutions.Current challenges and promising directions for the development of clean-water production and green-electricity generation are also demonstrated for their realistic implementations.We anticipate that this Account would promote more efforts toward fundamental research on graphene functionalization and encourage a broad exploration on the application of graphene assemblies in clean-water production and electric power generation systems. 展开更多
关键词 adsorption fibers CLEAN
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