钙钛矿型Ba_(0.97)Ca_(0.03)Sn_(0.08)Ti_(0.92)O_(3-δ)作为多硫化物固定剂在锂硫电池中的应用  

Perovskite Ba_(0.97)Ca_(0.03)Sn_(0.08)Ti_(0.92)O_(3-δ)as polysulfide immobilizer for lithium‑sulfur batteries

作　　者：吴旭 陈伟 王波 邵姣婧[1] 欧阳全胜 WU Xu;CHEN Wei;WANG Bo;SHAO Jiao‑Jing;OUYANG Quan‑Sheng(School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Military Representative Station of Arm Equipment Department in Guiyang,Guiyang 550025,China;Advanced Batteries and Materials Engineering Research Center,Guizhou Light Industry Technical College,Guiyang 550025,China)

机构地区：[1]贵州大学材料与冶金学院,贵阳550025 [2]陆军装备部驻贵阳地区军事代表室,贵阳550025 [3]贵州轻工职业技术学院先进电池与材料工程研究中心,贵阳550025

出　　处：《无机化学学报》2023年第9期1800-1806,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51972070,52062004);贵州省高层次创新人才项目(No.QKHPTRC‑GCC[2022]013‑1);贵州省高等学校先进电化学储能装置及关键材料创新团队(No.QKHPTRC‑GCC[2023]054);贵州省科技计划项目重点类型(黔科合基础[2020]1Z042);贵州大学培育项目(贵大培育[2019]01号)资助。

摘　　要：制备具有氧空位的钙钛矿结构的Ba_(0.97)Ca_(0.03)Sn_(0.08)Ti_(0.92)O_(3-δ)(BCST)材料并将其作为多硫化物的固定剂,通过强的化学键合作用抑制多硫化物(LiPS)穿梭。作为促进LiPS转化的催化剂,BCST/KB/S(KB为科琴黑)正极在0.1C下提供了1164.3 mAh·g^(-1)的初始放电容量,以及优异的循环稳定性。经过800次的充放电循环后,平均每次循环的容量衰减率仅为0.052%。We prepared perovskite Ba_(0.97)Ca_(0.03)Sn_(0.08)Ti_(0.92)O_(3-δ)(BCST)with oxygen vacancies as polysulfide(LiPS)immobilizer in Li‑S batteries through strong bonding interactions.As a catalyst for promoting LiPS conversion,Ba_(0.97)Ca_(0.03)Sn_(0.08)Ti_(0.92)O_(3-δ)/Ketjen black/sulfur(BCST/KB/S)cathode delivered a high initial specific discharge capacity of 1164.3 mAh·g^(-1)and exceptional cycling stability with a low‑capacity decay of only 0.052%per cycle over 800 cycles.

关 键 词：钙钛矿 催化 多硫化物 氧空位 

分 类 号：TQ152[化学工程—电化学工业]