In situ anchoring MnS nanoparticles on cobblestone-like carbon matrix as an anode with enhanced electrochemical performance

A heterostructured composite with MnS nanoparticles in situ anchored on cobblestone-like carbon matrix (C@MnS) has been designed and prepared by annealing and vulcanizing Mn-hexamine complex as a template. In the C@MnS composite, MnS nanoparticles are anchored and confined by cobblestone-like carbon matrix, which effectively suppresses aggregation and volume change and meanwhile improves the electrical conductivity and promotes fast electron delivery. The structural advantage and optimized composition endow the composite with remarkably increased capacity, improved cycling durability and boosted rate performance for lithium storage. After a charge-discharge test of 280 cycles (100 mA g −1 ), the reversible capacity of C@MnS still remains about 1025 mAh g −1 .