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A Desolvated Solid–Solid Interface for a High-Capacitance Electric Double Layer

机译：高电容双电层的去溶剂化固-固界面

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摘要

Understanding the electric double layer is essential for achieving efficient electrochemical energy storage technologies. A conventional solid-liquid electrode interface suffers from serious self-discharge and a narrow voltage window, which makes the development of a solid-solid interface imperative. However, an in-depth understanding of the electric double layer with a solid- solid interface is lacking. Here, a solid-solid interfacial electric double layer is proposed with excellent electrochemical performance. The solid layer is constructed by the electrochemical decomposition of lithium difluora(oxalate) borate, which provides a desolvated environment for the establishment of a electric double layer. This makes a stronger interaction between the electrode surface and the ions. Based on this unique property, it is found that the solid- solid interfacial electric double layer has an increased capacitance, which suggests a way to develop high-energy electrochemical capacitors.
机译：了解双电层对于实现有效的电化学储能技术至关重要。常规的固液电极界面遭受严重的自放电和窄的电压窗口，这使得必须开发固固界面。然而，缺乏对具有固体-固体界面的双电层的深入了解。在此，提出了具有优异电化学性能的固-固界面双电层。固体层通过二氟草酸硼酸锂的电化学分解来构造，这为建立双电层提供了脱溶剂的环境。这使得电极表面与离子之间的相互作用更强。基于该独特性质，发现固-固界面双电层具有增加的电容，这提示了开发高能量电化学电容器的方法。

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  • 来源
    《Advanced energy materials》 |2019年第12期|1803715.1-1803715.6|共6页
  • 作者

    Wang Yu-Zuo; Shan Xu-Yi; Ma Li-Po; Wang Jia-Wei; Wang Da-Wei; Peng Zhang-Quan; Cheng Hui-Ming; Li Feng;

  • 作者单位

    Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China;

    Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China;

    Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China;

    Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia;

    Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China;

    Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China|King Abdulaziz Univ, Ctr Excellence Environm Studies, Jeddah 21589, Saudi Arabia;

    Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    capacitance; electric double layers; solid-solid interfaces;

    机译：电容;双电层;固固界面;

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