引用本文:
柴小琴, 刘长久, 尚伟. 相转移法制备LiNi1-xMnxO2及其电化学性能[J]. 应用化学,
2004, 21(9): 905-909.
Citation: CHAI Xiao-Qin, LIU Chang-Jiu, SHANG Wei. Preparation and Performance of LiNi1-xMnxO2 by Phase Transfer Method[J]. Chinese Journal of Applied Chemistry, 2004, 21(9): 905-909.
Citation: CHAI Xiao-Qin, LIU Chang-Jiu, SHANG Wei. Preparation and Performance of LiNi1-xMnxO2 by Phase Transfer Method[J]. Chinese Journal of Applied Chemistry, 2004, 21(9): 905-909.
相转移法制备LiNi1-xMnxO2及其电化学性能
摘要:
采用相转移法合成了LiNi1-xMnxO2粉体。应用XRD、SEM、IR分析表征了其晶体结构及形态特征。将粉体材料制备成电极,并与负极锂片组装成模拟电池,电化学性能测试结果表明,掺杂Mn可增强Ni-O键的强度,有利于LiNiO22D层状结构的稳定。当n(Li):n(Ni):n(Mn)=1.24:0.9:0.1,在720℃焙烧2 h时,所制备的电极材料氧化还原可逆性好、活性增强、工作电压稳定、首次放电容量达161.8 mA·h/g。
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关键词:
- 相转移法
- / LiNi1-xMnxO2
- / 电化学性能
English
Preparation and Performance of LiNi1-xMnxO2 by Phase Transfer Method
Abstract:
The cathode materials for a lithium-ion battery LiNi1-xMnxO2 were prepared by a phase transfer method. XRD, SEM, IR, CV and charging-discharging experiments showed that when n(Li):n(Ni):n(Mn) was 1.24:0.9:0.1, and the intermediate gel powders were heated at 400℃ for 2 h, followed by sintering at 720℃ for 24 h, the redox reversibility of the electrode material was significantly improved; its activity was increased with stead working potential and its first discharging capability achieved 161.8 mA·h/g.
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Key words:
- LiNi1-xMnxO2
- / phase transfer method
- / electrochemical performance
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