Volume 20, Issue 16 2307071
Research Article

A Room-Temperature Self-Healing Liquid Metal-Infilled Microcapsule Driven by Coaxial Flow Focusing for High-Performance Lithium-Ion Battery Anode

Xirong Lin

Xirong Lin

National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China

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An Chen

An Chen

National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China

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Chaoyu Yang

Chaoyu Yang

Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

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Kai Mu

Kai Mu

Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

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Tianli Han

Tianli Han

Key Laboratory of Functional Molecular Solids of Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002 P. R. China

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Ting Si

Corresponding Author

Ting Si

Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Jinjin Li

Corresponding Author

Jinjin Li

National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Jinyun Liu

Corresponding Author

Jinyun Liu

Key Laboratory of Functional Molecular Solids of Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 30 November 2023
Citations: 2

Abstract

Liquid metals have attracted a lot of attention as self-healing materials in many fields. However, their applications in secondary batteries are challenged by electrode failure and side reactions due to the drastic volume changes during the “liquid-solid-liquid” transition. Herein, a simple encapsulated, mass-producible method is developed to prepare room-temperature liquid metal-infilled microcapsules (LMMs) with highly conductive carbon shells as anodes for lithium-ion batteries. Due to the reasonably designed voids in the microcapsule, the liquid metal particles (LMPs) can expand freely without damaging the electrode structure. The LMMs-based anodes exhibit superior capacity of rete-performance and ultra-long cycling stability remaining 413 mAh g−1 after 5000 cycles at 5.0 A g−1. Ex situ X-ray powder diffraction (XRD) patterns and electrochemical impedance spectroscopy (EIS) reveal that the LMMs anode displays a stable alloying/de-alloying mechanism. DFT calculations validate the electronic structure and stability of the room-temperature LMMs system. These findings will bring some new opportunities to develop high-performance battery systems.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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