In situ tailored strategy to remove capping agents from copper sulfide for building better lithium–sulfur batteries

Zhao, Yuwei, Wu, Donghai, Tang, Tingting, Lyu, Chongguang, Li, Junfeng, Ji, Shunping, Yuan, Cheng-zong, San Hui, Kwan ORCID: https://orcid.org/0000-0001-7089-7587, Zha, Chenyang, Hui, Kwun Nam and Chen, Houyang (2022) In situ tailored strategy to remove capping agents from copper sulfide for building better lithium–sulfur batteries. Journal of Materials Chemistry A, 10 (8). pp. 4015-4023. ISSN 2050-7488

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Abstract

Capping agents are frequently used in the chemical synthesis of materials, to precisely tailor the size, shape, and composition, with the expectation of high-performance catalysis. However, the adsorbed capping agents also serve as a physical barrier to restrict the interaction between reactants and catalytically active sites on the material surface. In this article, an in situ tailored interface strategy is introduced for effectively removing capping agents (long-chain oleylamine) from the surface of copper sulfide, to maximize the catalytic activity. The interface long-chain molecules of oleylamine are replaced by the inorganic S2- ion via a facile stirring approach without harsh processing conditions or the need for additional non-commercial materials. The as-cleaned copper sulfide shows greatly enhanced activity toward lithium-sulfur batteries, with an impressive current rate, excellent cycling stability, and great rate capability. These "clean surface"strategies using interface engineering provide a significant insight into the structure-activity relationships to support advancements in electrocatalysis technology in lithium-sulfur batteries. This journal is

Item Type: Article
Additional Information: Funding Information: This research was supported by the National Natural Science Foundation of China (Grant No. 61904080), the Natural Science Foundation of Jiangsu Province (Grant No. BK20190670), the Natural Science Foundation of Colleges and Universities in Jiangsu Province (Grant No. 19KJB530008), the Technology Innovation Project for Overseas Scholar in Nanjing, the Start-up Foundation of Nanjing Tech University, the Macau Young Scholars Program (AM2020005), the Science and Technology Development Fund of Macau SAR (File no. 0191/2017/A3, 0041/ 2019/A1, 0046/2019/AFJ, 0021/2019/AIR), University of Macau (File no. MYRG2017-00216-FST and MYRG2018-00192-IAPME), and UEA funding.
Faculty \ School: University of East Anglia Research Groups/Centres > Theme - ClimateUEA
Faculty of Science > School of Engineering
UEA Research Groups: Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV)
Faculty of Science > Research Groups > Energy Materials Laboratory
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Depositing User: LivePure Connector
Date Deposited: 09 May 2024 11:30
Last Modified: 09 May 2024 11:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/95109
DOI: 10.1039/D1TA10105F

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