High Coulombic efficiency aluminum-ion battery using an AlCl 3 -urea ionic liquid analog electrolyte

作者：Michael Angell, Chun‐Jern Pan, Youmin Rong, Chunze Yuan, Meng‐Chang Lin, Bing‐Joe Hwang, Hongjie Dai · 发表于：Proceedings of the National Academy of Sciences · 年份：2017 · DOI：10.1073/pnas.1619795114 · 被引用次数：432 · 研究领域：Advanced Battery Materials and Technologies、Advanced battery technologies research、Advancements in Battery Materials

Significance To relieve humanity’s dependence on fossil fuels, grid-scale storage of renewable energy must be implemented. This requires cheap, high-rate, and long cycle life energy storage mechanisms. This work presents the development of an Al-ion battery using earth-abundant aluminum and graphite as anode and cathode, respectively, and an ionic liquid analog electrolyte composed of AlCl 3 and urea that is very low-cost and eco-friendly. The battery exhibits ∼99.7% Coulombic efficiency and a substantial rate capability, with a cathode capacity of 73 mA g -1 at 100 mA g -1 (1.4 C).