Optimization on transport of charge carriers in cathode of sulfide electrolyte-based solid-state lithium-sulfur batteries  

作　　者：Zengqi Zhang Yantao Wang Tao Liu Gang Li Jun Ma Jianjun Zhang Pengxian Han Shanmu Dong Xuedong Yan Yue Tang Guanglei Cui 

机构地区：[1]Qingdao Industrial Energy Storage Research Institute,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China [2]School of Future Technology,University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Chemical Engineering,Ningbo Polytechnic,Ningbo 315800,China [4]The Biodesign Institute and School of Molecular Sciences,Arizona State University Tempe,Arizona 85287,USA

出　　处：《Nano Research》2023年第6期8139-8158,共20页纳米研究（英文版）

基　　金：supported by the Key Scientific and Technological Innovation Project of Shandong(No.2020CXGC010401);Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA22010602);the National Natural Science Foundation of China(Nos.52203150 and 52037006);CAS Key Technology Talent Program,Key Research and Development Plan of Shandong Province(No.2019GHZ009);Qingdao Key Laboratory of Solar Energy Utilization and Energy Storage Technology,and the Public Projects of Zhejiang Province(No.LGG19E020001).

摘　　要：Lithium-sulfur(Li-S)batteries are considered as promising candidates for novel energy storage technology that achieves energy density of 500 Wh·kg^(−1).However,poor cycle stability resulting from notorious shuttle effect and the safety concerns deriving from flammability of ether-based electrolyte hinder the practical application of Li-S batteries.Because of low solubility to polysulfide,high ionic conductivity,and safety property,sulfide-based electrolytes can fundamentally address above issues.It is widely known that the effective transports of both electrons and ions are basic requirement for redox reaction of active materials in cathode.Thereby,construction of fast and stable ionic and electronic transport paths in cathode is especially pivotal for cycle stability of solid-state Li-S batteries(SSLSBs).In this review,we provide research progresses on facilitating transport of charge carriers in composite cathode of SSLSBs.From perspective of materials,intrinsically conductivity of electrolyte and carbon shows dramatic effect on migration of charge carriers in cathode of SSLSBs,thereby the conductive additives are summarized in the manuscript.Additionally,the charge transport in cathode of SSLSBs fully depends on the physical contact between active materials and conductive additives,therefore we summarized the strategies optimizing interfacial contact and reducing interfacial resistance.Finally,potential future research directions and prospects for SSLSBs with improved energy density and cycle performance are also proposed.

关 键 词：sulfide electrolyte charge transport composite cathode solid-state lithium-sulfur battery 

分 类 号：TM912[电气工程—电力电子与电力传动]