中国物理B ›› 2016, Vol. 25 ›› Issue (1): 18210-018210.doi: 10.1088/1674-1056/25/1/018210

所属专题: TOPICAL REVIEW — Fundamental physics research in lithium batteries

• TOPICAL REVIEW—Fundamental physics research in lithium batteries • 上一篇    下一篇

Brief overview of electrochemical potential in lithium ion batteries

Jian Gao(高健), Si-Qi Shi(施思齐), Hong Li(李泓)   

  1. 1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Materials Genome Institute, Shanghai University, Shanghai 200444, China;
    3. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
  • 收稿日期:2015-05-15 修回日期:2015-07-20 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: Hong Li E-mail:hli@aphy.iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51325206 and 51372228), National Basic Research Program of China (Grant No. 2012CB932900), Shanghai Pujiang Program, China (Grant No. 14PJ1403900).

Brief overview of electrochemical potential in lithium ion batteries

Jian Gao(高健)1,2, Si-Qi Shi(施思齐)3,2, Hong Li(李泓)1   

  1. 1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Materials Genome Institute, Shanghai University, Shanghai 200444, China;
    3. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
  • Received:2015-05-15 Revised:2015-07-20 Online:2016-01-05 Published:2016-01-05
  • Contact: Hong Li E-mail:hli@aphy.iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51325206 and 51372228), National Basic Research Program of China (Grant No. 2012CB932900), Shanghai Pujiang Program, China (Grant No. 14PJ1403900).

摘要:

The physical fundamentals and influences upon electrode materials' open-circuit voltage (OCV) and the spatial distribution of electrochemical potential in the full cell are briefly reviewed. We hope to illustrate that a better understanding of these scientific problems can help to develop and design high voltage cathodes and interfaces with low Ohmic drop. OCV is one of the main indices to evaluate the performance of lithium ion batteries (LIBs), and the enhancement of OCV shows promise as a way to increase the energy density. Besides, the severe potential drop at the interfaces indicates high resistance there, which is one of the key factors limiting power density.

关键词: lithium ion batteries, open circuit voltage, Fermi energy level, electrochemical potential

Abstract:

The physical fundamentals and influences upon electrode materials' open-circuit voltage (OCV) and the spatial distribution of electrochemical potential in the full cell are briefly reviewed. We hope to illustrate that a better understanding of these scientific problems can help to develop and design high voltage cathodes and interfaces with low Ohmic drop. OCV is one of the main indices to evaluate the performance of lithium ion batteries (LIBs), and the enhancement of OCV shows promise as a way to increase the energy density. Besides, the severe potential drop at the interfaces indicates high resistance there, which is one of the key factors limiting power density.

Key words: lithium ion batteries, open circuit voltage, Fermi energy level, electrochemical potential

中图分类号:  (Lithium-ion batteries)

  • 82.47.Aa
05.70.-a (Thermodynamics)