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Lin L, Yue K, Xia L, Yan X, Zheng H, Zhang Y, Sa B, Li J, Wang L, Lin J, Liu Y, Wei G, Peng DL, Xie Q. Tailoring Li Deposition by Regulating Structural Connectivity of Electrochemical Li Reservoir in Li-metal Batteries. Angew Chem Int Ed Engl 2024; 63:e202319847. [PMID: 38195861 DOI: 10.1002/anie.202319847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/11/2024]
Abstract
Irregular Li deposition is the major reason for poor reversibility and cycle instability in Li metal batteries, even leading to safety hazards, the causes of which have been extensively explored. The structural disconnection induced by completely dissolving Li in the traditional testing protocol is a key factor accounting for irregular Li growth during the subsequent deposition process. Herein, the critical role played by the structural connectivity of electrochemical Li reservoir in subsequent Li deposition behaviors is elucidated and a morphology-performance correlation is established. The structural connection and resultant well-distributed morphology of the in situ electrochemical Li reservoir ensure efficient electron transfer and Li+ diffusion pathway, finally leading to homogenized Li nucleation and growth. Tailoring the geometry of Li reservoir can improve the coulombic efficiency and cyclability of anode-free Li metal batteries by optimizing Li deposition behavior.
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Affiliation(s)
- Liang Lin
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Ke Yue
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Li Xia
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Xiaolin Yan
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Hongfei Zheng
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Yinggan Zhang
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Baisheng Sa
- Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, P. R. China
| | - Junjie Li
- School of Applied Mathematics, Xiamen University of Technology, Xiamen, 361024, P. R. China
| | - Laisen Wang
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Jie Lin
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Yujing Liu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Guoying Wei
- College of Materials & Chemistry, China Jiliang University, Hangzhou, 310018, P. R. China
| | - Dong-Liang Peng
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Qingshui Xie
- State Key Lab for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials (Xiamen University), College of Materials, Xiamen University, Xiamen, 361005, P. R. China
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