A facile synthesis of controlled Mn₃O₄ hollow polyhedron for high-performance lithium-ion battery anodes

Controlled Mn₃O₄ hollow polyhedron with average size of 1 μm was successfully synthetized via one-step hydrothermal method, followed by coated with carbon layer on the surface of the polyhedron using dopamine as carbon source to form the hollow core–shell structured Mn₃O₄@C composites. The unique morphology and strong structure effectively enhanced the cycling stability of electrode materials. The electrochemical results show that the as-prepared Mn₃O₄@C composite exhibits outstanding electrochemical lithium storage properties with high initial discharge capacity of 2057.1 mAhg⁻¹ and a superior cycling performance that could maintain about 885.5 mAhg⁻¹ after 200 cycles at a 100 mAg⁻¹ current density. These promising results demonstrate that the Mn₃O₄@C composite could be promising LIBs anode materials.