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首页> 外文期刊>Advanced energy materials >A Hollow-Shell Structured V_2O_5 Electrode-Based Symmetric Full Li-Ion Battery with Highest Capacity
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A Hollow-Shell Structured V_2O_5 Electrode-Based Symmetric Full Li-Ion Battery with Highest Capacity

机译：空心壳结构的最大容量的基于V_2O_5电极的对称全锂离子电池

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摘要

The symmetric batteries with an electrode material possessing dual cathodic and anodic properties are regarded as an ideal battery configuration because of their distinctive advantages over the asymmetric batteries in terms of fabrication process, cost, and safety concerns. However, the development of high-performance symmetric batteries is highly challenging due to the limited availability of suitable symmetric electrode materials with such properties of highly reversible capacity. Herein, a triple-hollow-shell structured V2O5 (THS-V2O5) symmetric electrode material with a reversible capacity of 400 mAh g(-1) between 1.5 and 4.0 V and 600 mAh g(-1) between 0.1 and 3.0 V, respectively, when used as the cathode and anode, is reported. The THS-V2O5 electrodes assembled symmetric full lithium-ion battery (LIB) exhibits a reversible capacity of approximate to 290 mAh g(-1) between 2 and 4.0 V, the best performed symmetric energy storage systems reported to date. The unique triple-shell structured electrode makes the symmetric LIB possessing very high initial coulombic efficiency (94.2%), outstanding cycling stability (with 94% capacity retained after 1000 cycles), and excellent rate performance (over 140 mAh g(-1) at 1000 mA g(-1)). The demonstrated approach in this work leaps forward the symmetric LIB performance and paves a way to develop high-performance symmetric battery electrode materials.
机译：具有电极材料且具有双重阴极和阳极特性的对称电池被认为是理想的电池配置，因为它们在制造工艺，成本和安全性方面均优于非对称电池。然而，由于具有高度可逆容量的这种特性的合适的对称电极材料的有限可用性，高性能对称电池的开发是极富挑战性的。在此，一种三空心壳结构的V2O5（THS-V2O5）对称电极材料，其可逆容量在1.5至4.0 V之间> 400 mAh g（-1），在0.1至3.0 V之间> 600 mAh g（-1）据报道，分别用作阴极和阳极时。 THS-V2O5电极组装的对称全锂离子电池（LIB）在2至4.0 V之间展现出大约290 mAh g（-1）的可逆容量，这是迄今为止报道的性能最好的对称储能系统。独特的三层结构电极使对称LIB具有很高的初始库仑效率（94.2％），出色的循环稳定性（1000次循环后保留94％的容量）和出色的倍率性能（在140 mAh g（-1）以上） 1000 mA g（-1））。这项工作中证明的方法使对称式LIB性能得以飞跃，并为开发高性能对称式电池电极材料铺平了道路。

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  • 来源
    《Advanced energy materials》 |2019年第31期|1900909.1-1900909.9|共9页
  • 作者

    Wang Chengrui; Zhang Lei; Al-Mamun Mohammad; Dou Yuhai; Liu Porun; Su Dawei; Wang Guoxiu; Zhang Shanqing; Wang Dan; Zhao Huijun;

  • 作者单位

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Univ Technol Sydney, Sch Math & Phys Sci, Sydney, NSW 2007, Australia;

    Univ Technol Sydney, Sch Math & Phys Sci, Sydney, NSW 2007, Australia;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia;

    Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China;

    Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Brisbane, Qld 4222, Australia|Chinese Acad Sci, Inst Solid State Phys, CAS Ctr Excellence Nanosci, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, Hefei 230031, Anhui, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    full cell; lithium-ion batteries; multi-hollow-shell; symmetric batteries; V2O5;

    机译：全牢房;锂离子电池;多空心壳;对称电池;V2O5;

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