DataVXACS Energy LettersPaper
journal article·2020-04-10

Eliminating the Detrimental Effects of Conductive Agents in Sulfide-Based Solid-State Batteries

Sixu Deng, Yipeng Sun, Xia Li, Zhouhong Ren, Jianwen Liang, Kieran Doyle-Davis, Jianneng Liang, Weihan Li, Mohammad Norouzi Banis, Qian Sun, Ruying Li, Yongfeng Hu, Huan Huang, Li Zhang, Shigang Lu, Jun Luo, Xueliang Sun

ACS Energy Letters· Volume 5· Issue 4
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Source abstract

Abstract

Sulfide-based solid-state electrolytes (SSEs) are considered a key part in the realization of high-performance all solid-state lithium-ion batteries (ASSLIBs). However, the incompatibility between conductive additives and sulfide-based SSEs in the cathode composite challenges the stable delivery of high-rate capability. Herein, a poly(3,4-ethylenedioxythiophene) (PEDOT) modification is designed as a semiconductive additive for cathode composites (cathode/SSE/carbon) to realize the high performance. The modified ASSLIB demonstrates a competitive rate capacity of over 100 mAh g–1 at 1C, which is 10 times greater than that of the bare cathode. Detailed surface chemical and structural evolutions at the cathodic interface indicate the PEDOT modification not only significantly suppresses the side reactions but also realizes effective electron transfer at the cathode/SSE/carbon three-phase interface. Introducing a controllable semiconductive additive for the cathode composites in this study offers a promising design to realize the high-rate performance and overcome long-term challenges in the application of conductive additives in sulfide-based ASSLIBs.
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Research context

Energy storageComposites

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada

Center for Electron Microscopy and Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China

Canadian Light Source, 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada

Glabat Solid-State Battery Inc., 700 Collip Circle, London, Ontario N6G 4X8, Canada

China Automotive Battery Research Institute Co. Ltd, Fifth Floor, No. 43, Mining Building, North Sanhuan Middle Road, Beijing 100088, China

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Canada Foundation for Innovation · Western University · Canada Research Chairs · University of Saskatchewan · Natural Sciences and Engineering Research Council of Canada · Mitacs · China Automotive Battery Research Institute Co., Ltd · Ontario Research Fund · Glabat Solid-State Battery Inc

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