A Self-Healing Anode for Li-Ion Batteries by Rational Interface Modification of Room-Temperature Liquid Metal

• DOI: 10.1021/acsaem.1c01951
• Publication Date: 2021-09-28T12:33:34Z
• Authors: Chenghao Huang; Xiaodong Wang; Qingping Cao; Dongxian Zhang; Jian-Zhong Jiang
• Keywords: Liquid metal; Dendrite (mathematics)

With the advantage of high energy density, Li-ion batteries (LIBs) have been applied as a popular storage system. However, high-capacity anode (e.g., alloy and Li metals) has problems such volume expansion dendrite growth during cycles, leading to short cyclic life safety concerns. Benefiting from its room-temperature liquid phase nature, Ga-based metal (LM) or alloys with excellent self-healing ability are promising anodes for achieving LIBs long lifespan. Nevertheless, bulk LM easily falls off current collector because surface energy, which can be effectively ameliorated by rational interface modification. Herein, eutectic GaIn (EGaIn) nanoparticles modified energies used stable LIBs, exhibiting specific capacity 542.8 mAh g–1 at 0.1 A rate capability 3 (380.4 g–1, 70% initial capacity). Moreover, EGaIn nanoparticle also shows retention 90.1% 1 after stabilizing cycles (from 100 800 cycles).