One-pot synthesis of MnO/C N-doped hybrid materials for high performance lithium-ion batteries

Rapid technological advancements and increasing demand for the efficient utilisation of global resources have promoted the design and development of sustainable anode materials to achieve batteries with high specific capacities and excellent rate capability for energy-storage devices. Herein, a high-performance MnO nitrogen-doped carbon anode material for lithium-ion battery based on coffee residues, potassium permanganate, and urea is presented. MnO and N are uniformly embedded inside the carbon material, connected by N-Mn bonds. The introduction of N not only hinders the aggregation of Mn nanoparticles generated during lithiation, but also enhances the electrochemical activity of carbon and improves the electrical conductivity for better reaction kinetics. These benefitting factors promote the high reversible specific capacity of 768 mA h g(-1) at the current density of 0.3 A g(-1), as well as superior cyclic and stability performance. The demonstrated high-performance and low-cost anode material also provides a sustainable route for the high-value-added utilisation of waste biomass. (C) 2019 Elsevier B.V. All rights reserved.