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中国科学:技术科学（英文版）
中国科学:技术科学（英文版）

周光召

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中国科学:技术科学（英文版）/Journal Science China Technological SciencesCSCDCSTPCDEISCI
查看更多>>《中国科学》是中国科学院主办、中国科学杂志社出版的自然科学专业性学术刊物。《中国科学》任务是反映中国自然科学各学科中的最新科研成果，以促进国内外的学术交流。《中国科学》以论文形式报道中国基础研究和应用研究方面具有创造性的、高水平的和有重要意义的科研成果。在国际学术界，《中国科学》作为代表中国最高水平的学术刊物也受到高度重视。国际上最具有权威的检索刊物SCI，多年来一直收录《中国科学》的论文。1999年《中国科学》夺得国家期刊奖的第一名。
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    An epidermal electrode based triboelectric walking energy harvester for wearable wireless sensing applications

    CHANG ShiYuanLIU FuHaiCHEN JinKaiXIA LianBin...
    949-957页
    查看更多>>摘要：Harvesting bio-kinetic energy using a triboelectric nanogenerator(TENG)is one of the promising routes to solve the sustainable energy supply problem for wearable electronics.However,additional materials,complex fabricating processes or specific mechanical structures are needed for existing TENGs to harvest bio-kinetic energy.Besides,they need to be tightly attached to the human body,which may result in detachment and malfunction under tense human motion.Herein,an intrinsic epidermal electrode-based TENG(E-TENG)is proposed to harvest human walking energy.The wearing shoes and ground are used as tribo-materials,and the human epidermis is used as the back electrode of the E-TENG.Compared with the traditional TENGs,the E-TENG does not need any additional tribo-materials and complex mechanical structures.Under optimal conditions,the voltage output of E-TENG can reach 914 V.E-TENG has been used as a self-powered warning sensor and pedometer sensor for demonstration.Furthermore,E-TENG based self-powered wireless sensor system has been developed using a newly designed micro energy electronic switch(MEES).Ambient ultraviolet intensity,temperature and humidity information can be monitored and then transmitted to mobile phone every 3.5 min,demonstrating great potential for widespread wearable applications.
      原文链接:
    • 万方数据
    • 维普

    Unraveling electrolyte solvation architectures for high-performance lithium-ion batteries

    YANG MengHaoSHI ZheHE ZhiYuanWANG Dan...
    958-964页
    查看更多>>摘要：The design of advanced electrolytes hinges critically on a comprehensive comprehension of lithium-ion migration mechanisms within these electrochemical systems.Fluorination generally improves the stability and reduces the reactivity of organic compounds,making them potentially suitable for use in harsh conditions such as those found in a battery electrolyte.However,the specific properties,such as the solvation power,diffusivity,ion mobility,and so forth,would depend on the exact nature and extent of the fluorination.In this work,we introduce a theoretical framework designed to facilitate the autonomous creation of electrolyte molecular structures and craft methodologies to compute transport coefficients,providing a physical interpretation of fluoride systems.Taking fluorinated-1,2-diethoxyethanes as electrolyte solvents,we present and analyze the relationship be-tween the electronic properties and atomic structures,and further correlate these properties to the transport coefficients,resulting in a good alignment with the experimental diffusion behaviors and Li-solvation structures.The insights derived from this research contribute to the methodological basis for high-throughput evaluation of prospective electrolyte systems,and conse-quently,propose strategic directions for the improvement of electrochemical cycle characteristics.This comprehensive ex-ploration of the transport mechanisms enhances our understanding,offering avenues for further advancements in the field of lithium-ion battery technology.
      原文链接:
    • 万方数据
    • 维普