Nanoconfined Expansion Behavior of Hollow MnS@Carbon Anode with Extended Lithiation Cyclic Stability

The construction of hollow nanostructure by compositing with carbonaceous materials is generally considered an effective strategy to mitigate the drastic volume expansion transition metal sulfides (TMSs) high theoretical specific capacity in process lithium storage. However, designing well-controlled architectures extended lithiation cyclic stability, and ease electroactive into reserved spaces still needs be developed. Herein, using MnS as example, double-shell carbon-coated TMSs architecture designed achieve controllable operation shell thickness regulate interfacial stress. functional enables high-capacity reach reversible capacities cycling stability at current densities. In situ transmission electron microscopy, optical observation characterizations finite elements are used analyze nanoconfined behavior [email protected] anodes. as-designed structure a carbon ≈12.5 nm can effectively restrict nanoshell inner voids compressive This study demonstrates general design coating tailored