Rational cathode configuration with bilayer membranes to engineer current-collector-free high-areal-sulfur lithium-sulfur batteries  

作　　者：Jianmei Han Hua Zhang Peng Wang Ning Song Xuguang An Baojuan Xi Shenglin Xiong 

机构地区：[1]College of Chemistry and Chemical Engineering,Taishan University,Tai’an 271021,China [2]Key Laboratory of the Colloid and Interface Chemistry,Ministry of Education,and School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China [3]School of Mechanical Engineering,Chengdu University,Chengdu 610106,China

出　　处：《Nano Research》2024年第6期5224-5232,共9页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(No.U1764258);the Taishan Scholar Project Foundation of Shandong Province(No.ts20190908);the Natural Science Foundation of Shandong Province(No.ZR2021ZD05).

摘　　要：The application of light-weight current collectors is preferred because of the increased energy density of the batteries.Bearing it in mind,the cathode is designed with self-made paperlike memberane as current collector coupled with another interlayer to enable the high-energy-density lithium-sulfur batteries.Via a facile and green step-by-step methodology,the hybrid membrane is finalized successfully,consisting of reduced graphene oxide sheets covering paper-derived carbon(GPC)bearing Fe@Fe2O3 and Fe1−xS@Fe2O3 core-shell nanoparticles(FeFeO/FeSFeO@GPC).The film works as the current collector and interlayer simultaneously considering the porous and conductive features.As demonstrated by the electrochemical testing,the FeFeO/FeSFeO@GPC hybrid cell exhibits attractive cycling stability and superior rate capability.The cell configuration and structural/composition merits of FeFeO/FeSFeO@GPC film facilitate the faster reaction kinetics,conducive to the improvement of capacity retention.In view of the effective cathode design,the areal sulfur loading is increased to 10.46 mg·cm^(−2)and a reversible capacity of 6.67 mAh·cm^(−2)can be retained after 60 cycles at 0.1 C.

关 键 词：light-weight self-made current collector core-shell high-areal-sulfur lithium-sulfur batteries 

分 类 号：TM912[电气工程—电力电子与电力传动]