钴-钼双金属碳化物修饰隔膜强化锂硫电池中多硫化锂的吸附和催化转化(英文)
发布时间:2024-01-04 20:20
本文报道了一种钴-钼双金属碳化物(Co3Mo3C)催化材料用于修饰锂硫电池隔膜,强化多硫化锂的化学吸附和催化转化.所组装的电池表现出优异的电化学性能,即使在8.0 mg cm-2的硫面积负载量条件下,面积比容量仍高达6.8 mA h cm-2.理论计算结果表明,相比于单一金属碳化物Mo2C,双金属碳化物Co3Mo3C具有更多的活性位点,更利于化学固定多硫化锂,并催化多硫化锂间相互转化;同时, Ni3Mo3C和Fe3Mo3C亦表现出类似的高催化活性.本研究对高性能锂硫电池关键催化材料的设计具有一定的指导意义.
【文章页数】:13 页
【文章目录】:
INTRODUCTION
EXPERIMENTAL SECTION
Synthesis of bimetallic carbide samples
Fabrication of the carbide-modified separator
Material characterizations
Electrochemical measurements
Polysulfide adsorption and electrochemical kinetics tests
First-principles calculations
RESULTS AND DISCUSSION
CONCLUSIONS
本文编号:3877006
【文章页数】:13 页
【文章目录】:
INTRODUCTION
EXPERIMENTAL SECTION
Synthesis of bimetallic carbide samples
Fabrication of the carbide-modified separator
Material characterizations
Electrochemical measurements
Polysulfide adsorption and electrochemical kinetics tests
First-principles calculations
RESULTS AND DISCUSSION
CONCLUSIONS
本文编号:3877006
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