Optimized Phase and Crystallinity of Cr(NCN) Dominating Electrochemical Lithium Storage Performance.

Cr(NCN) is a potentially high-capacity and fast-charge Li-ion anode owing to its abundant and broad tunnels. However, high intrinsic chemical instability severely restricts its capacity output and electrochemical reversibility. Herein we report an effective crystalline engineering method for optimizing its phase and crystallinity.