• 中文

周菲菲Associate Professor

周菲菲,南京大学学士、北京大学硕士、日本国立北海道大学博士、日本东京大学客座研究员。南京航空航天大学副教授,中华日本哲学会、日本文化人类学会会员。主要研究日本文化与中日文化交流史。任现职以来,主持国家级、省部级课题3项:国家社科规划办后期资助一般项目“日本工匠文化研究”、江苏省高校哲学社会科学重点项目“宋明理学对日本工匠精神影响研究”、江苏省社科基金江苏文脉研究专项“江苏对日交流史”,及日本学术...Detials

Effect of testing temperature on the electrochemical properties of Li(Ni0.6Mn0.2Co0.2)O-2 and its Ti3C2(OH)(2) modification as cathode materials for lithium-ion batteries

Release time:2020-03-23  Hits:

  • Affiliation of Author(s):机电学院
  • Journal:JOURNAL OF ALLOYS AND COMPOUNDS
  • Key Words:Li(Ni0.6Co0.2Mn0.2)O-2 cathode materials Testing temperature Electrochemical performance Equivalent circuit model Ti3C2(OH)(2) modification
  • Abstract:The effects of testing temperature on the electrochemical properties of Li(Ni0.6Mn0.2Co0.2)O-2 are investigated in detail. When the testing temperature is 40 degrees C, the Li(Ni0.6Mn0.2Co0.2)O-2 cathode material possesses the highest initial discharge capacity of 162.4 mAh.g(-1) at 0.5C rate, but their cycling stability decreases markedly. When the test temperature rises up to 60 degrees C, the side reaction between electrolyte and cathode material becomes serious, and the Li(Ni0.6Mn0.2Co0.2)O(2 )cannot work. When the testing temperature decreases, the electrochemical impedances like R-ct values increase, and then the discharge capacity at 0 degrees C, -10 degrees C and -20 degrees C is only 80%, 53% and 23% of that at 25 degrees C. Based on the electrochemical impedance spectra at different temperatures, four kinds of equivalent circuit models are classified. The cycle and rate performance of Li(Ni0.6Mn0.2Co0.2)O-2 cathode material could be improved obviously through Ti3C2(OH)(2) modification in an extreme environment, and especially in sub-zero environment. (C) 2019 Elsevier B.V. All rights reserved.
  • ISSN No.:0925-8388
  • Translation or Not:no
  • Co-author:Xu, Lipeng,Frank Chow,kjz,Zhou, Haobin,Zhang Qiang
  • Correspondence Author:周飞,孔继周,zhoufeifei
  • Date of Publication:2019-10-05