文献类型：期刊文献

英文题名：Gelatin-assisted synthesis of nano Li1.2Mn0.54Ni0.13Co0.13O2 with improved electrochemical performance

作者：Song, Jiling Wu, Hongming Guo, Jianbing Zhou, Dengfeng

第一作者：Song, Jiling

通信作者：Guo, JB[1];Guo, JB[2]

机构：[1]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China;[2]Guizhou Qiancai S&T Dev Co Ltd, Guiyang 550003, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China

通信机构：corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China;corresponding author), Guizhou Qiancai S&T Dev Co Ltd, Guiyang 550003, Peoples R China.

年份：2023

卷号：34

期号：5

外文期刊名：JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001011056700081)】；

语种：英文

外文关键词：Cathodes - Cobalt compounds - Lithium - Lithium compounds - Manganese compounds - Nickel compounds - Particle size - Sols

摘要：Gelatin was applied as a dispersant into the preparation of Li1.2Mn0.54Ni0.13-Co0.13O2 cathode material via sol-gel method. The effect of gelatin on the microstructure and electrochemical performance of this material was systematically explored. The addition of gelatin can effectively reduce the particle size and also make the samples have better particle size distribution. X-ray diffraction characterization reveals that gelatin can change the cation mixing of materials, which has close connection to lithium ions transfer in the active material. At 1 C rate (1 C = 250 mA g(-1)), sample with 15 wt% gelatin can maintain 189.4 mAh g(-1) after 100 cycles, corresponding to the capacity retention of 97.5%, while the pristine sample only has 132.6 mAh g(-1) and 87.5%. At the same time, sample with 15 wt% gelatin possesses a capacity of 75 mAh g(-1) at the current density of 20 C, while pristine Li1.2Mn0.54Ni0.13Co0.13O2 just has 14 mAh g(-1). The lithium diffusion coefficient (D-Li (+)) of that with 15 wt% gelatin is 3.13 x 10(-15) cm(2) s(-1), 72.9% bigger than the pristine sample.