中国物理B ›› 2019, Vol. 28 ›› Issue (1): 16402-016402.doi: 10.1088/1674-1056/28/1/016402

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Equation of state of LiCoO2 under 30 GPa pressure

Yong-Qing Hu(户永清), Lun Xiong(熊伦), Xing-Quan Liu(刘兴泉), Hong-Yuan Zhao(赵红远), Guang-Tao Liu(刘广涛), Li-Gang Bai(白利刚), Wei-Ran Cui(崔巍然), Yu Gong(宫宇), Xiao-Dong Li(李晓东)   

  1. 1 School of Intelligent Manufacturing, Sichuan University of Arts and Science, Dazhou 635000, China;
    2 DaZhou Industrial Technology Institute of Intelligent Manufacturing, Dazhou 635000, China;
    3 School of Materials and Energy, University of Electronic Science and Technology, Chengdu 610054, China;
    4 Research Branch of Advanced Materials & Green Energy, Henan Institute of Science and Technology, Xinxiang 453003, China;
    5 National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China;
    6 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2018-09-10 修回日期:2018-10-28 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Lun Xiong E-mail:1094129778@qq.com
  • 基金资助:

    Project supported by the Program of Education Department of Sichuan Province of China (Grant No. 18ZB0506), the Project of Sichuan University of Arts and Science, China (Grant No. 2017KZ001Z), and Outstanding Talent Introduction Project of Henan Institute of Science and Technology, China (Grant No. 203010617011). This work was performed at 4W2 beamline of Beijing Synchrotron Radiation Facility (BSRF), which was supported by Chinese Academy of Sciences (Grant Nos. KJCX2-SWN03 and KJCX2-SW-N20).

Equation of state of LiCoO2 under 30 GPa pressure

Yong-Qing Hu(户永清)1, Lun Xiong(熊伦)1,2, Xing-Quan Liu(刘兴泉)3, Hong-Yuan Zhao(赵红远)4, Guang-Tao Liu(刘广涛)5, Li-Gang Bai(白利刚)6, Wei-Ran Cui(崔巍然)6, Yu Gong(宫宇)6, Xiao-Dong Li(李晓东)6   

  1. 1 School of Intelligent Manufacturing, Sichuan University of Arts and Science, Dazhou 635000, China;
    2 DaZhou Industrial Technology Institute of Intelligent Manufacturing, Dazhou 635000, China;
    3 School of Materials and Energy, University of Electronic Science and Technology, Chengdu 610054, China;
    4 Research Branch of Advanced Materials & Green Energy, Henan Institute of Science and Technology, Xinxiang 453003, China;
    5 National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China;
    6 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-09-10 Revised:2018-10-28 Online:2019-01-05 Published:2019-01-05
  • Contact: Lun Xiong E-mail:1094129778@qq.com
  • Supported by:

    Project supported by the Program of Education Department of Sichuan Province of China (Grant No. 18ZB0506), the Project of Sichuan University of Arts and Science, China (Grant No. 2017KZ001Z), and Outstanding Talent Introduction Project of Henan Institute of Science and Technology, China (Grant No. 203010617011). This work was performed at 4W2 beamline of Beijing Synchrotron Radiation Facility (BSRF), which was supported by Chinese Academy of Sciences (Grant Nos. KJCX2-SWN03 and KJCX2-SW-N20).

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摘要：

LiCoO2 is one of the most important cathode materials for high energy density lithium ion batteries. The compressed behavior of LiCoO2 under high pressure has been investigated using synchrotron radiation x-ray diffraction. It is found that LiCoO2 maintains hexagonal symmetry up to the maximum pressure of 30.1 GPa without phase transition. The elastic modulus at ambient pressure is 159.5(2.2) GPa and its first derivative is 3.92(0.23). In addition, the high-pressure compression behavior of LiCoO2 has been studied by first principles calculations. The derived bulk modulus of LiCoO2 is 141.6 GPa.

关键词: equation of state, high pressure, LiCoO2

Abstract:

LiCoO2 is one of the most important cathode materials for high energy density lithium ion batteries. The compressed behavior of LiCoO2 under high pressure has been investigated using synchrotron radiation x-ray diffraction. It is found that LiCoO2 maintains hexagonal symmetry up to the maximum pressure of 30.1 GPa without phase transition. The elastic modulus at ambient pressure is 159.5(2.2) GPa and its first derivative is 3.92(0.23). In addition, the high-pressure compression behavior of LiCoO2 has been studied by first principles calculations. The derived bulk modulus of LiCoO2 is 141.6 GPa.

Key words: equation of state, high pressure, LiCoO2

中图分类号:  (Equations of state of nonmetals)

  • 64.30.Jk
64.60.-i (General studies of phase transitions) 07.35.+k (High-pressure apparatus; shock tubes; diamond anvil cells) 61.05.cp (X-ray diffraction)