典型文献
Characteristics of a gold-doped electrode for application in high-performance lithium-sulfur battery
文献摘要：
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 cathode.The material is prepared via simple mixing of gold with molten sulfur at 120 ℃,quenching at room temperature,and grinding.Our comprehensive study reports relevant electrochemical data,advanced X-ray computed tomography (CT) imaging of the posi-tive and negative electrodes,and a thorough structural and morphological characterization of the S:Au 97:3 w/w composite.This cathode exhibits high rate capability within the range from C/10 to 1C,a max-imum capacity above 1300 mAh gs-1,and capacity retention between 85％ and 91％ after 100 cycles at 1C and C/3 rates.The 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 5 μL 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 battery.Quantitative 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 performance.Furthermore,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.
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作者姓名：
Vittorio Marangon;Daniele Di Lecce;Dan J.L.Brett;Paul R.Shearing;Jusef Hassoun
作者机构：
University of Ferrara,Department of Chemical and Pharmaceutical Sciences,Via Fossato di Mortara 17,Ferrara,44121,Italy;Electrochemical Innovation Lab,Department of Chemical Engineering,UCL,London WC1E 7JE,United Kingdom;The Faraday Institution,Quad One,Becquerel Ave,Harwell Campus,Didcot OX11 0RA,United Kingdom;National Interuniversity Consortium of Materials Science and Technology (INSTM),University of Ferrara Research Unit,University of Ferrara,Via Fossato di Mortara,17,Ferrara 44121,Italy
文献出处：
引用格式：
[1]Vittorio Marangon;Daniele Di Lecce;Dan J.L.Brett;Paul R.Shearing;Jusef Hassoun-.Characteristics of a gold-doped electrode for application in high-performance lithium-sulfur battery)[J].能源化学,2022(01):116-128
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AB值：
0.582111
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