Distinct Effect of Cooling Rate on Structure and Electrochemical Performance of Lithium Rich Layered Oxides: a Case Study of 0.3Li(2)MnO(3)center dot 0.7LiNi(0.5)Mn(0.5)O(2)

作者：Feng, Fushan; Fang, Haisheng^*; Yang, Bin; Ma, Wenhui; Dai, Yongnian

来源：International Journal of Electrochemical Science, 2014, 9(12): 6852-6857.

• Lithium ion batteries
• Cathode material
• Li-rich layered oxide
• Cooling rate

0.3Li(2)MnO(3)center dot 0.7LiNi(0.5)Mn(0.5)O(2) is prepared by a solid-state method with a two-step heating process, and the effect of cooling rate after the first-step heating on structure and electrochemical behavior of the obtained material is studied. The result shows that the sample prepared with a slow cooling has much better electrochemical performance due to its better structural integration between Li2MnO3 and LiNi0.5Mn0.5O2 than the sample obtained with a quick cooling. Such an effect of cooling rate after the first-step heating in our work is contrary to the effect of cooling rate after the second-step heating as previously reported.

• 出版日期2014-12
• 单位昆明理工大学