Grapevine-like high entropy oxide composites boost high-performance lithium sulfur batteries as bifunctional interlayers

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外文摘要：Lithium-sulfur batteries(LSBs)with high energy densities have been demonstrated the potential for energy-intensive demand applications.However,their commercial applicability is hampered by hysteretic electrode reaction kinetics and the shuttle effect of lithium polysulfides(LiPSs).In this work,an interlayer consisting of high-entropy metal oxide(Cu0.7Fe0.6Mn0.4Ni0.6Sn0.5)O4 grown on carbon nanofibers(HEO/CNFs)is designed for LSBs.The CNFs with highly porous networks provide transport pathways for Li+and e,as well as a physical sieve effect to limit LiPSs crossover.In particular,the grapevine-like HEO nanoparticles generate metal-sulfur bonds with LiPSs,efficiently anchoring active materials.The unique structure and function of the interlayer enable the LSBs with superior electrochemical performance,i.e.,the high specific capacity of 1381 mAh g-1 at 0.1 C and 561 mAh g at 6 C.This work presents a facile strategy for exploiting high-performance LSBs.

外文关键词：

Electrospun carbon nanofibersGrapevine-like morphologyHierarchical physical sieve effectHigh-entropy induced chemisorptionLithium-sulfur battery

作者：

Huarong Fan、Yubing Si、Yiming Zhang、Fulong Zhu、Xin Wang、Yongzhu Fu

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作者单位：

College of Chemistry and Center of Green Catalysis,Zhengzhou University,Zhengzhou,450001,China

School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu,611731,China

基金：

Certificate of postdoctoral research grant in Henan province河南省自然科学基金国家自然科学基金parallel highperformance computing of National Supercomputing Center in Zhengzhou

项目编号：

21230041028121975225

出版年：

2024

DOI：

10.1016/j.gee.2022.11.001

绿色能源与环境(英文)

CSTPCD

ISSN：

年,卷(期)：2024.9(3)

参考文献量46