摘要
以一级有机胺为模板,制了薄层状的纳米MoO_3-Temp,该材料具有3.5 nm左右的层间距.对MoO_3-Temp薄层状纳米材料、微米级棒状MoO_3超细材料及多晶MoO_3的电化学嵌镁性能进行了比较,发现层状结构缩短了镁离子的迁移路径,并且在层间还可以储存电解液,从而有利于镁离子向其晶格内部迁移.
Layered nanofiber MoO_3-Temp was synthesized by organic template with 3.5 nm layered distance.The layered nanofiber MoO_3-Temp,rod-like MoO_3 and polycrystalline MoO_3 materials have been investigated as cathode for rechargeable magnesium battery.The results of the initial discharge specific capacity are as follows：MoO_3-Temp（81 mAh/g）millimeter -sized rod-like MoO_3（70.4 mAh/g ）polycrystalline MoO_3（56.5 mAh/g）.It is shown that layered structured materials are favorable for magnesium intercalation due to the path in the solid is shorter and the space between the layers can provide electrolyte-filled channels.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第6期5-8,共4页
Acta Scientiarum Naturalium Universitatis Nankaiensis
基金
国家自然科学基金(20801059)
天津市自然科学基金(10JCYBJC08000)
关键词
镁二次电池
正极材料
MoO_3
电化学性能
magnesium secondary batteries
cathode material
MoO_3
electrochemical performance
