Electrolyte chemistry of adaptive hydrogen bonded domains for high voltage lithium metal batteries

Lithium metal batteries face challenges of unstable interfaces and slow ion transport. Here, authors report a hydrogen-bonded domain electrolyte based on addition of 2-cyano-N-methylacetamidethat as cosolvent which enhances ion transport and interface stability, enabling long cycling high voltage (up to 4.7 V) Li | |LiNi0.8Co0.1Mn0.1O2 batteries with high specific energy of 418.2 Wh kg−1.