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

作　　者：Huarong Fan Yubing Si Yiming Zhang Fulong Zhu Xin Wang Yongzhu Fu 

机构地区：[1]College of Chemistry and Center of Green Catalysis,Zhengzhou University,Zhengzhou,450001,China [2]School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu,611731,China

出　　处：《Green Energy & Environment》2024年第3期565-572,共8页绿色能源与环境（英文版）

基　　金：financially supported by the Certificate of postdoctoral research grant in Henan province,the Natural Science Foundation of Henan province(Grant No.212300410281);the National Natural Science Foundation of China(Grant No.21975225).

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(Cu_(0.7)Fe_(0.6)Mn_(0.4)Ni_(0.6)Sn_(0.5))O_(4) 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^(-1) at 6 C.This work presents a facile strategy for exploiting high-performance LSBs.

关 键 词：Electrospun carbon nanofibers Grapevine-like morphology Hierarchical physical sieve effect High-entropy induced chemisorption Lithium-sulfur battery 

分 类 号：TM912[电气工程—电力电子与电力传动]