A scalable in situ surfactant-free synthesis of a uniform MnO/graphene composite for highly reversible lithium storage.

A novel MnO/graphene composite, used as an anode for lithium ion intercalation, was prepared via an in situ surfactant-free facile method by taking advantage of the byproduct Mn ion in the conventional fabrication of graphene oxide. The as-fabricated lithium ion batteries exhibited a long-term stable reversible capacity (603 mA h g(-1) after 350 cycles at 1 A g(-1) based on the composite, hereinafter the same) and superior rate performance (400 mA h g(-1) at 3 A g(-1)).