EGaIn coated 3D-Cu foam as a self-healing current collector for lithium ion batteries

Xiaoxuan LIU, Ziyu YANG, Heng QUAN, Junfeng LI, Yong XIANG, Fang WU*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

7 Citations (Scopus)


Traditional lithium-ion batteries are prone to cracks and perforations in extreme environments, which could cause electrochemical performance degradation or even safety problems. Here, based on the alloying reaction of liquid metal, through the adjustment of alloying temperature and reaction time, a uniform and stable dispersion of eutectic gallium indium liquid metal (EGaIn) on the surface and internal structure of the micro-etched 3D-Cu current collector (EGaIn@3D-Cu) is obtained. Furthermore, the graphite anode prepared with the EGaIn@3D-Cu current collector (the self-healing graphite anode) shows an excellent self-healing performance. Namely, the specific capacities of the self-healing graphite anode before and after scratch damage are 327.4 mA h g−1 and 309.6 mA h g−1, respectively, which is significantly better than that of the graphite anode assembled with 2D-Cu foil current collector. Therefore, the EGaIn@3D-Cu current collector prepared by a simple manufacturing process could effectively realizes the self-healing function, prevent the capacity degradation and improve the stability of the battery.

Original languageEnglish
Article number107145
Number of pages6
JournalElectrochemistry Communications
Early online date15 Oct 2021
Publication statusPublished - Nov 2021
Externally publishedYes

Bibliographical note

The authors gratefully acknowledge financial support by the startup funds from the University of Electronic Science and Technology of China (Y030202059018003).


  • 3D-Cu foam
  • Current collector
  • EGaIn
  • Graphite
  • Self-healing


Dive into the research topics of 'EGaIn coated 3D-Cu foam as a self-healing current collector for lithium ion batteries'. Together they form a unique fingerprint.

Cite this