Characteristics of a gold-doped electrode for application in high-performance lithium-sulfur battery

作     者：Vittorio Marangon Daniele Di Lecce Dan J.L.Brett Paul R.Shearing Jusef Hassoun Vittorio Marangon;Daniele Di Lecce;Dan J.L.Brett;Paul R.Shearing;Jusef Hassoun

作者机构：University of FerraraDepartment of Chemical and Pharmaceutical SciencesVia Fossato di Mortara 17Ferrara44121Italy Electrochemical Innovation LabDepartment of Chemical EngineeringUCLLondon WC1E 7JEUnited Kingdom The Faraday InstitutionQuad OneBecquerel AveHarwell CampusDidcot OX11 ORAUnited Kingdom National Interuniversity Consortium of Materials Science and Technology(INSTM)University of Ferrara Research UnitUniversity of FerraraVia Fossato di Mortara17Ferrara 44121Italy 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第1期

页      面：116-128,I0004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）] 080502[工学-材料学] 

基　　金：supported by the grant “Fondo di Ateneo per la Ricerca Locale (FAR) 2019”, University of Ferrara performed within the collaboration project “Accordo di Collaborazione Quadro 2015” between University of Ferrara (Department of Chemical and Pharmaceutical Sciences) and Sapienza University of Rome (Department of Chemistry) funding from The Faraday Institution LiSTAR programme (EP/ S003053/1, FIRG014) supported by funding from EPSRC (EP/K005030/1) the support of The Royal Academy of Engineering (CiET1718/59) 

主　　题：Lithium-sulfur battery Sulfur loading Electrolyte/sulfur ratio Gold nanoparticles X-ray tomography 

摘      要：Bulk sulfur incorporating 3 wt% gold nano-powder is investigated as possible candidate to maximize the fraction of active material in the Li-S battery *** material is prepared via simple mixing of gold with molten sulfur at 120℃,quenching at room temperature,and *** comprehensive study reports relevant electrochemical data,advanced X-ray computed tomography(CT)imaging of the positive and negative electrodes,and a thorough structural and morphological characterization of the S:Au 97:3 w/w *** cathode exhibits high rate capability within the range from C/10 to 1C,a maximum capacity above 1300 mAh gs^(-1),and capacity retention between 85%and 91%after 100 cycles at 1C and C/3 *** novel formulation enables a sulfur fraction in the composite cathode film as high as 78 wt%,an active material loading of 5.7 mg cm^(-2),and an electrolyte/sulfur(E/S)ratio of 5μL mg^(-1),which lead to a maximum areal capacity of 5.4 mAh cm^(-2).X-ray CT at the micro-and nanoscale reveals the microstructural features of the positive electrode that favor fast conversion kinetics in the *** analysis of sulfur distribution in the porous cathode displays that electrodeposition during the initial cycle may trigger an activation process in the cell leading to improved ***,the tomography study reveals the characteristics of the lithium anode and the cell separator upon a galvanostatic test prolonged over 300 cycles at a 2C rate.