• 主题
高级搜索  >
历史搜索 清空历史
首页> 中文期刊> 《安徽地质》 >A Bifunctional-Modulated Conformal Li/Mn-Rich Layered Cathode for Fast-Charging, High Volumetric Density and Durable Li-Ion Full Cells

A Bifunctional-Modulated Conformal Li/Mn-Rich Layered Cathode for Fast-Charging, High Volumetric Density and Durable Li-Ion Full Cells

         
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lithium-and manganese-rich(LMR)layered cathode materials hold the great promise in designing the next-generation high energy density lithium ion batteries.However,due to the severe surface phase transformation and structure collapse,stabilizing LMR to suppress capacity fade has been a critical challenge.Here,a bifunctional strategy that integrates the advantages of surface modification and structural design is proposed to address the above issues.A model compound Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)(MNC)with semi-hollow microsphere structure is synthesized,of which the surface is modified by surface-treated layer and graphene/car-bon nanotube dual layers.The unique structure design enabled high tap density(2.1 g cm^(−3))and bidirectional ion diffusion pathways.The dual surface coatings covalent bonded with MNC via C-O-M linkage greatly improves charge transfer efficiency and mitigates electrode degradation.Owing to the synergistic effect,the obtained MNC cathode is highly conformal with durable structure integrity,exhibiting high volumetric energy density(2234 Wh L^(−1))and predominant capacitive behavior.The assembled full cell,with nanograph-ite as the anode,reveals an energy density of 526.5 Wh kg^(−1),good rate performance(70.3%retention at 20 C)and long cycle life(1000 cycles).The strategy presented in this work may shed light on designing other high-performance energy devices.

著录项

  • 来源
    《安徽地质》 |2021年第8期|40-55|共16页
  • 作者

    Zedong Zhao; Minqiang Sun; Tianqi Wu; Jiajia Zhang; Peng Wang; Long Zhang; Chongyang Yang; Chengxin Peng; Hongbin Lu;

  • 作者单位

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

    National Engineering Research Center for Supercapacitor for Vehicles Shanghai Aowei Technology Development Co. Ltd Shanghai 201203 People's Republic of China;

    School of Materials Science&Engineering University of Shanghai for Science and Technology Shanghai 200093 People's Republic of China;

    Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of Chemistry Nankai University Tianjin 300071 People's Republic of China;

    State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composites Fudan University 2005 Songhu Road Shanghai 200438 People's Republic of China;

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

相似文献

  • 中文文献
  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号