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 

作者机构：College of Chemistry and Chemical EngineeringTaishan UniversityTai’an 271021China Key Laboratory of the Colloid and Interface ChemistryMinistry of Educationand School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China School of Mechanical EngineeringChengdu UniversityChengdu 610106China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2024年第17卷第6期

页      面：5224-5232页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

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). 

主　　题：light-weight self-made current collector core-shell high-areal-sulfur lithium-sulfur batteries 

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.