期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 36, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201803023
关键词
dendrites-free batteries; lithiophilic metal oxides; lithium affinity; lithium-metal anodes; lithium-metal batteries
类别
资金
- Science and Technology Planning Project of Guangdong Province, China [2016A010104014]
- Science and Technology Program of Guangzhou, China [201607010110]
- Chinese Nature Science Foundation NSFC [51420105002]
- Chinese Postdoctoral Science Foundation [2017M622626]
- Australian Research Council
A molten lithium infusion strategy has been proposed to prepare stable Li-metal anodes to overcome the serious issues associated with dendrite formation and infinite volume change during cycling of lithium-metal batteries. Stable host materials with superior wettability of molten Li are the prerequisite. Here, it is demonstrated that a series of strong oxidizing metal oxides, including MnO2, Co3O4, and SnO2, show superior lithiophilicity due to their high chemical reactivity with Li. Composite lithium-metal anodes fabricated via melt infusion of lithium into graphene foams decorated by these metal oxide nanoflake arrays successfully control the formation and growth of Li dendrites and alleviate volume change during cycling. A resulting Li-Mn/graphene composite anode demonstrates a super-long and stable lifetime for repeated Li plating/stripping of 800 cycles at 1 mA cm(-2) without voltage fluctuation, which is eight times longer than the normal lifespan of a bare Li foil under the same conditions. Furthermore, excellent rate capability and cyclability are realized in full-cell batteries with Li-Mn/graphene composite anodes and LiCoO2 cathodes. These results show a major advancement in developing a stable Li anode for lithium-metal batteries.
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