期刊
JOURNAL OF POWER SOURCES
卷 195, 期 15, 页码 5005-5012出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.02.011
关键词
Spinel; High voltage cathode; Nickel manganese oxide; Solid-state synthesis; Lithiation
资金
- Army Research Laboratory [W911NF-06-2-0044]
A new two-step solid-state process was developed for synthesis of a pure phase 4.7V LiMn1.5Ni0.5O4-delta (LMNO) spinel of good electrochemical properties. This process which was based on formation of stable Ni1-xMn2O4-delta (x < 0.33) spinel followed by subsequent lithiation, demonstrated the emerging of LiMn1.5Ni0.5O4-delta frame work at temperatures of as low as 350 degrees C. During this lithiation process, migration of metal ions (Ni/Mn) from partially occupied tetrahedral 8a sites (in Ni0.67Mn2O4-delta) toward octahedral 16d site occurred. The resultant spinel material displayed low irreversible loss, a 97% columbic efficiency and 6% loss in discharge capacity after 100 cycles at 60 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据