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首页> 外文期刊>Advanced energy materials >Ameliorating the Interfacial Problems of Cathode and Solid-State Electrolytes by Interface Modification of Functional Polymers
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Ameliorating the Interfacial Problems of Cathode and Solid-State Electrolytes by Interface Modification of Functional Polymers

机译：通过功能性聚合物的界面改性改善阴极和固态电解质的界面问题

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摘要

Solid-state Li secondary batteries may become high energy density storage devices for the next generation of electric vehicles, depending on the compatibility of electrode materials and suitable solid electrolytes. Specifically, it is a great challenge to obtain a stable interface between these solid electrolytes and cathodes. Herein, this issue can be effectively addressed by constructing a poly(acrylonitrile-co-butadiene) coated layer onto the surface of LiNi0.6Mn0.2Co0.2O2 cathode materials. The polymer layer plays a vital role in working as a protective shell to retard side reaction and ameliorate the contact of the solid-solid interface during the cycling process. In the resultant solid-state batteries, both rate capacity (99 mA h g(-1) at 3 C) and cycling stability (75% capacity retention after 400 cycles) are improved after coating. This impressive performance highlights the great importance of layer modification in the cathode and inspires the development of solid-state batteries toward practical applications.
机译：固态锂二次电池可能会成为新一代电动汽车的高能量密度存储设备，这取决于电极材料和合适的固体电解质的相容性。具体地，在这些固体电解质和阴极之间获得稳定的界面是巨大的挑战。在此，可以通过在LiNi0.6Mn0.2Co0.2O2正极材料的表面上构造一个聚（丙烯腈-共-丁二烯）涂层来有效地解决这个问题。聚合物层在充当保护壳以阻止副反应并改善循环过程中固-固界面的接触方面起着至关重要的作用。在所得的固态电池中，涂覆后，额定容量（3 C下为99 mA h g（-1））和循环稳定性（400个循环后的容量保持率为75％）均得到改善。这一令人印象深刻的性能凸显了阴极层修饰的重要性，并激发了固态电池向实际应用的发展。

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  • 来源
    《Advanced energy materials》 |2018年第24期|1801528.1-1801528.8|共8页
  • 作者

    Wang Li-Ping; Zhang Xu-Dong; Wang Tai-Shan; Yin Ya-Xia; Shi Ji-Lei; Wang Chun-Ru; Guo Yu-Guo;

  • 作者单位

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Beijing 100190, Peoples R China;

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

    cathodes; interface contacts; poly(acrylonitrile-co-butadiene); surface coatings;

    机译：阴极;界面接触;聚（丙烯腈-丁二烯）;表面涂层;

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