Three-Dimensional Lithium Anode with an In Situ Generated Li 2 O-Rich Solid Electrolyte Interface for High-Rate and Long-Storage Lithium Battery

Ping Li, Xuan Liu, Yingke Zhou (), Xiangyu Cheng, Luozhi Mo, Xiaohui Tian and Zhongzhi Yuan ()
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Ping Li: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Xuan Liu: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Yingke Zhou: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Xiangyu Cheng: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Luozhi Mo: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Xiaohui Tian: The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Zhongzhi Yuan: School of Chemistry, South China Normal University, Guangzhou 510006, China

Energies, 2024, vol. 17, issue 24, 1-17

Abstract: The limited rate performance of Li||CF x batteries hinders their wide application, owing to the low conductivity of CF x cathode material and the undesirable solid electrolyte interface (SEI) layer formed on the Li anode surface. Herein, a strategy for constructing a three-dimensional lithium anode (3D-Li anode) with high specific surface area and an in situ formed favorable SEI layer is proposed to enhance the interfacial stability and uniformity of ion transport and realize a Li||CF x battery with remarkable comprehensive performance. A 3D-Li anode (Li@CuO-Cu foam) is successfully constructed by molten Li infusion of a thermal oxidation processed copper foam. The lithiophilicity of the Cu foam framework is optimized by the formed CuO. The Li@CuO-Cu foam||CF x battery exhibits a high discharge specific capacity (1149.6 mAh g −1 at 0.1 C) along with a high discharge plateau voltage (2.65 V). At a high rate of 10 C, the 3D-Li anode-based batteries still demonstrate a discharge specific capacity of 463 mAh g −1 , which is about 2.5 times that of the conventional Li||CF x , and exhibit excellent storage performance (620.3 mAh g −1 after storage at 55 °C for 90 days) and a low monthly self-discharge rate (1.28%). This work demonstrates a promising strategy to construct a three-dimensional lithium metal anode and significantly improve the rate and storage performance of Li||CF x batteries.

Keywords: three-dimensional lithium anode; Li 2 O-rich SEI; lithiophilic layer; high-rate capacity; Li||CF x battery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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