能源化学(英文版)

能源化学(英文) ›› 2019, Vol. 28 ›› Issue (4): 119-124.DOI: 10.1016/j.jechem.2018.06.001

• • 上一篇    下一篇

Electrochemical process of sulfur in carbon materials from electrode thickness to interlayer

Xiaonan Tanga,b, Zhenhua Sunb,c, Huicong Yangb, Haitao Fangd, Fei Weie, Hui-Ming Chengb,f, Shuping Zhuoa, Feng Lib,c   

  1. a School of Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China;
    b Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;
    c School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China;
    d School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
    e Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    f Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, Guangdong, China
  • 收稿日期:2018-05-07 修回日期:2018-06-01 出版日期:2019-04-15 发布日期:2019-04-15
  • 通讯作者: Shuping Zhuo, Feng Li
  • 基金资助:

    This work was supported by the National Key R&D Program of China (2016YFA0200102, 2016YFB0100100, 2014CB932402), the National Natural Science Foundation of China (Nos. 51525206, 51521091, 51372253, U1401243 and 21576159), Youth Innovation Promotion Association of the Chinese Academy of Sciences (2015150), the Institute of Metal Research (2015-PY03), the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA09010104), Key Research Program of the Chinese Academy of Sciences (Grant no. KGZD-EW-T06), and the CAS/SAFEA International Partnership Program for Creative Research Teams.

Electrochemical process of sulfur in carbon materials from electrode thickness to interlayer

Xiaonan Tanga,b, Zhenhua Sunb,c, Huicong Yangb, Haitao Fangd, Fei Weie, Hui-Ming Chengb,f, Shuping Zhuoa, Feng Lib,c   

  1. a School of Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China;
    b Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;
    c School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China;
    d School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
    e Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    f Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, Guangdong, China
  • Received:2018-05-07 Revised:2018-06-01 Online:2019-04-15 Published:2019-04-15
  • Contact: Shuping Zhuo, Feng Li
  • Supported by:

    This work was supported by the National Key R&D Program of China (2016YFA0200102, 2016YFB0100100, 2014CB932402), the National Natural Science Foundation of China (Nos. 51525206, 51521091, 51372253, U1401243 and 21576159), Youth Innovation Promotion Association of the Chinese Academy of Sciences (2015150), the Institute of Metal Research (2015-PY03), the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA09010104), Key Research Program of the Chinese Academy of Sciences (Grant no. KGZD-EW-T06), and the CAS/SAFEA International Partnership Program for Creative Research Teams.

摘要： Lots of efforts have been done on different porous carbon materials as cathode for Lithium-sulfur (Li-S) battery. However, seldom researches have been done on the relationship between cathode thickness and electrochemical performance. Our work investigates the relation between electrochemical performance and cathode thickness with typical porous carbon materials. We explain the phenomenon that only a modest cathode thickness can have the most adequate electrochemical reaction trend through the aspect of thermodynamics (chemical potential) so that the best electrochemical performance can be obtained. Besides, interlayer can remit the shuttle effect but hinder the lithium ion diffusion process simultaneously. And we verify the effect of interlayer thickness on the shuttle effect and lithium ion diffusion process.

关键词: Lithium-sulfur battery, Electrochemical reaction, Cathode thickness, Chemical potential, Ion diffusion

Abstract: Lots of efforts have been done on different porous carbon materials as cathode for Lithium-sulfur (Li-S) battery. However, seldom researches have been done on the relationship between cathode thickness and electrochemical performance. Our work investigates the relation between electrochemical performance and cathode thickness with typical porous carbon materials. We explain the phenomenon that only a modest cathode thickness can have the most adequate electrochemical reaction trend through the aspect of thermodynamics (chemical potential) so that the best electrochemical performance can be obtained. Besides, interlayer can remit the shuttle effect but hinder the lithium ion diffusion process simultaneously. And we verify the effect of interlayer thickness on the shuttle effect and lithium ion diffusion process.

Key words: Lithium-sulfur battery, Electrochemical reaction, Cathode thickness, Chemical potential, Ion diffusion