Enabling High Stability of Co-Free LiNiO₂ Cathode via a Sulfide-Enriched Cathode Electrolyte Interface

Zhaowen Bai; Zhehan Ying; Fengqi Zhang; Wei Wang; Zhiyong Huang; Tingting Yang; Wenjie Li; Weixia Dong; Jie Yan; Cong Lin; Liang Hu; Tiancheng Liu; Zezhou Lin; Tianyi Li; Chengjun Sun; Luxi Li; Yang Wang; Qingyu Kong; Shaonan Gu; Hui Shen; Shijie Hao; Xuanming Chen; Leung Yuk Frank Lam; Xijun Hu; Haitao Huang; Xun-Li Wang; Fangxi Xie; Guohua Chen; Qi Liu; Yang Ren

doi:10.1021/acsenergylett.4c00652

journal article·2024-06-14

Enabling High Stability of Co-Free LiNiO₂ Cathode via a Sulfide-Enriched Cathode Electrolyte Interface

Zhaowen Bai, Zhehan Ying, Fengqi Zhang, Wei Wang, Zhiyong Huang, Tingting Yang, Wenjie Li, Weixia Dong, Jie Yan, Cong Lin, Liang Hu, Tiancheng Liu, Zezhou Lin, Tianyi Li, Chengjun Sun, Luxi Li, Yang Wang, Qingyu Kong, Shaonan Gu, Hui Shen, Shijie Hao, Xuanming Chen, Leung Yuk Frank Lam, Xijun Hu, Haitao Huang, Xun-Li Wang, Fangxi Xie, Guohua Chen, Qi Liu, Yang Ren

ACS Energy Letters· Volume 9· Issue 6

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Source abstract

Abstract

Cobalt-free lithium nickel oxide (LNO) has garnered significant interest as the end member of high-nickel layered oxide cathodes for next-generation batteries. However, its practical performance notably underperforms expectations because of the structural degradation and unstable interfacial chemistry with electrolytes during cycling. Here, we report that a durable cathode-electrolyte interface (CEI), enriched by in situ formed sulfides and borides, can inhibit LNO structural degradation and suppress Ni ion dissolution. With the CEI protection, the stability of LNO can be remarkably extended, and batteries demonstrate a capacity retention rate of 84% (30 °C) and 79% (50 °C) after 200 cycles at 1C, respectively. These results demonstrate that enriching CEI with sulfur-containing species can effectively stabilize the interfacial chemistry of LNO, particularly at an elevated temperature of 50 °C. This finding provides valuable perspectives on designing electrolytes for cobalt-free LNO and other high-Ni cathodes toward the development of next-generation high-energy-density lithium-ion batteries.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

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 Physics, City University of Hong Kong, Hong Kong 999077, People’s Republic of China

Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, Guangdong, People’s Republic of China

Materials Characterization and Preparation Facility (Guangzhou), The Hong Kong University of Science and Technology (Guangzhou), Guangzhou 511453, People’s Republic of China

Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, People’s Republic of China

Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong 999077, People’s Republic of China

Department of Mechanical Engineering and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hong Kong 999077, People’s Republic of China

Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, People’s Republic of China

X-ray Science Division, Argonne National Laboratory, Illinois 60439, United States

Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, 91190, France

Key Laboratory of Fine Chemicals in Universities of Shandong, Jinan Engineering Laboratory for Multi-scale Functional Materials, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, People’s Republic of China

College of New Energy and Materials, China University of Petroleum-Beijing, Beijing 100100, People’s Republic of People’s Republic of China

Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong 999077, People’s Republic of China

School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong 519082, People’s Republic of China

School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, People’s Republic of China

Centre for Neutron Scattering, City University of Hong Kong, Kowloon, Hong Kong 999077, People’s Republic of China

Funding

Science, Technology and Innovation Commission of Shenzhen Municipality · City University of Hong Kong · Shenzhen Research Institute, City University of Hong Kong

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