中国物理B ›› 2016, Vol. 25 ›› Issue (1): 18205-018205.doi: 10.1088/1674-1056/25/1/018205

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

Strategies to curb structural changes of lithium/transition metal oxide cathode materials & the changes' effects on thermal & cycling stability

Xiqian Yu(禹习谦), Enyuan Hu(胡恩源), Seongmin Bak,Yong-Ning Zhou(周永宁), Xiao-Qing Yang(杨晓青)   

  1. Chemistry Department, Brookhaven National Laboratory Upton, NY 11973, USA
  • 收稿日期:2015-05-14 修回日期:2015-06-04 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: Xiao-Qing Yang E-mail:xyang@bnl.gov
  • 基金资助:

    Project supported by the U.S. Department of Energy, the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies (Grant No. DE-SC0012704).

Strategies to curb structural changes of lithium/transition metal oxide cathode materials & the changes' effects on thermal & cycling stability

Xiqian Yu(禹习谦), Enyuan Hu(胡恩源), Seongmin Bak,Yong-Ning Zhou(周永宁), Xiao-Qing Yang(杨晓青)   

  1. Chemistry Department, Brookhaven National Laboratory Upton, NY 11973, USA
  • Received:2015-05-14 Revised:2015-06-04 Online:2016-01-05 Published:2016-01-05
  • Contact: Xiao-Qing Yang E-mail:xyang@bnl.gov
  • Supported by:

    Project supported by the U.S. Department of Energy, the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies (Grant No. DE-SC0012704).

摘要:

Structural transformation behaviors of several typical oxide cathode materials during a heating process are reviewed in detail to provide in-depth understanding of the key factors governing the thermal stability of these materials. We also discuss applying the information about heat induced structural evolution in the study of electrochemically induced structural changes. All these discussions are expected to provide valuable insights for designing oxide cathode materials with significantly improved structural stability for safe, long-life lithium ion batteries, as the safety of lithium-ion batteries is a critical issue; it is widely accepted that the thermal instability of the cathodes is one of the most critical factors in thermal runaway and related safety problems.

关键词: thermal stability, cathode, oxide, lithium ion batteries, safety

Abstract:

Structural transformation behaviors of several typical oxide cathode materials during a heating process are reviewed in detail to provide in-depth understanding of the key factors governing the thermal stability of these materials. We also discuss applying the information about heat induced structural evolution in the study of electrochemically induced structural changes. All these discussions are expected to provide valuable insights for designing oxide cathode materials with significantly improved structural stability for safe, long-life lithium ion batteries, as the safety of lithium-ion batteries is a critical issue; it is widely accepted that the thermal instability of the cathodes is one of the most critical factors in thermal runaway and related safety problems.

Key words: thermal stability, cathode, oxide, lithium ion batteries, safety

中图分类号:  (Lithium-ion batteries)

  • 82.47.Aa
81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)) 88.80.ff (Batteries) 68.60.Dv (Thermal stability; thermal effects)