Co-electrodeposited Al-Ga composite electrode from ionic liquid with volume expansion adaptability in energy storage

The high specific capacity and cycle stability of Li-ion alloy anode materials have been the focus of researchers. However, the alloy anode materials are easy to be broken and cracked after cycling. In this study, we have co-electrodeposited Al-Ga composite from ionic liquid, and the obtained composite has a higher specific capacity and the longer cycling life than single Ga/Al electrode. Initial discharge capacity is 1554.7 mAh/g, and Coulombic efficiency is 82.6% at 0.1 A/g. Co-electrodeposited Al-Ga composite from ionic liquid provides a new way to solve the electrode materials that are easily fractured and cracked after cycling, and improves cycle stability and high capacity to a certain extent.