摘要
通过对离子交换法制备的棒状三氧化钼材料进行水热、高温热处理得到了三氧化钼纳米颗粒。利用X射线衍射谱(XRD)、扫描电镜(SEM)、充放电循环及交流阻抗(EIS)对其结构、形貌和电化学性能进行了研究.结果显示,经水热10 h,高温600℃煅烧10 h得到的纳米三氧化钼材料拥有较好的电化学性能,在100 mA/g放电电流下,首次放电容量达到295.1 mAh/g,经15周循环后,容量仍保持在236.6 mAh/g,容量保持率为80.2%。
Rod-like MoO_3 synthesized by ion-exchange method were post treated by hydrothermal and high temperature calcination to obtain MoO_3 nanomaterials.The synthesized materials were investigated by X-ray diffraction（XRD）,scanning electron microscopic （SEM）,galvanostatic charge/discharge and electrochemical impedance spectroscopy（EIS）. The results showed that the material synthesized by hydrothermal for 10h then calcinated in air for 10 h had the best electrochemical performance.The initial discharge capacity was 295.1 mAh/g at the discharge current density of 100 mA/g and kept 236.6 mAh/g after 15 cycles with capacity retention was 80.2%.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期72-77,共6页
Acta Scientiarum Naturalium Universitatis Nankaiensis
基金
国家自然科学基金(20801059
21073100)
天津市自然科学基金(10JCYBJC08000)
关键词
三氧化钼
锂离子电池
正极材料
水热
热处理
MoO_3
lithium ion battery
cathode material
hydrothermal
calcination
