Fast Polysulfide Conversion Catalysis and Reversible Anode Operation by A Single Cathode Modifier in Li-Metal Anode-Free Lithium-Sulfur Batteries

Zhao，Yun1,2; Huang，Limin2; Zhao，Dan1; Yang Lee，Jim1

2023-09-04

10.1002/anie.202308976

Angewandte Chemie - International Edition   影响因子和分区

1433-7851

1521-3773

The two major issues confronting the commercialization of rechargeable lithium-sulfur (Li−S) batteries are the sluggish kinetics of the sulfur electrochemical reactions on the cathode and inadequate lithium deposition/stripping reversibility on the anode. They are commonly mitigated with additives designed specifically for the anode and the cathode individually. Here, we report the use of a single cathode modifier, InSe, which can effectively catalyse the polysulfide reactions on the cathode, and also improve the reversibility of Li deposition and removal on the anode through a LiInS/LiInSe containing solid electrolyte interface formed in situ by the Se and In ions dissolved in the electrolyte. The amounts of dissolved Se and In are small relative to the amount of InSe administered. The benefits of using this single modification approach were verified in Li-metal anode-free Li−S batteries with a LiS loading of 4 mg cm and a low electrolyte/LiS ratio of 7.5 μL mg. The resulting battery showed 60 % capacity retention after 160 cycles at the 0.2 C rate and an average Coulombic efficiency of 98.27 %, comparing very well with recent studies using separate electrode modifiers.

Cathode Additive Electrochemistry Lithium-Sulfur Battery Polysulfides Reversible Anode

SCI ; EI

英语

NI论文

通讯

Guangdong Provincial Key Laboratory Of Catalysis[2020B121201002];Energy Market Authority of Singapore[EMA-EP009-SEGC-020];Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20220818100212027];

Chemistry

Chemistry, Multidisciplinary

WOS:001037872900001

WILEY-V C H VERLAG GMBH

20233114454925

Additives ; Cathodes ; Deposition ; Lithium batteries ; Lithium compounds ; Lithium sulfur batteries ; Polysulfides ; Selenium ; Selenium compounds ; Solid electrolytes

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Primary Batteries:702.1.1 ; Secondary Batteries:702.1.2 ; Electron Tubes:714.1 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Polymers:815.1.1 ; Synthetic Rubber:818.2.1

CHEMISTRY

2-s2.0-85165953259

Scopus

1.Department of Chemical & Biomolecular Engineering,National University of Singapore,Singapore,4 Engineering Drive 4,117585,Singapore
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China

Zhao，Yun,Huang，Limin,Zhao，Dan,et al. Fast Polysulfide Conversion Catalysis and Reversible Anode Operation by A Single Cathode Modifier in Li-Metal Anode-Free Lithium-Sulfur Batteries[J]. Angewandte Chemie - International Edition,2023,62(36).

Zhao，Yun,Huang，Limin,Zhao，Dan,&Yang Lee，Jim.(2023).Fast Polysulfide Conversion Catalysis and Reversible Anode Operation by A Single Cathode Modifier in Li-Metal Anode-Free Lithium-Sulfur Batteries.Angewandte Chemie - International Edition,62(36).

Zhao，Yun,et al."Fast Polysulfide Conversion Catalysis and Reversible Anode Operation by A Single Cathode Modifier in Li-Metal Anode-Free Lithium-Sulfur Batteries".Angewandte Chemie - International Edition 62.36(2023).