全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

Preparation and performance of LiNi0.8Co0.2O2 cathode material based on Co-substituted α-Ni(OH)2 precursor

DOI: 10.1007/s11434-007-0525-1

Keywords: lithium ion battery,microwave homogeneous precipitation method,Co-substituted α-Ni(OH)2,LiNi0.8Co0.2O2

Full-Text   Cite this paper   Add to My Lib

Abstract:

Co-substituted α-Ni(OH)2 was synthesized by a novel microwave homogeneous precipitation method in the presence of urea. LiNi0.8Co0.2O2 cathode material was synthesized by calcining Co-substituted α-Ni(OH)2 precursor and LiOH·H2O at 900°C for 10 h in flowing oxygen. XRD, FTIR, FESEM and electrochemical tests were used to study the physical and the electrochemical performances of the materials. The results show that the prepared LiNi0.8Co0.2O2 compound has a good layered hexagonal structure. Moreover, the LiNi0.8Co0.2O2 cathode material demonstrates stable cyclability with a high initial specific discharge capacity of 183.9 mAh/g. The good electrochemical performance could be attributed to the uniform distribution of Ni2+ and Co2+ ions in the crystal structure and a minimal cation mixing in LiNi0.8Co0.2O2 host structure.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133