Preparation and lithium storage performance of NiCuCoMn electrode materials.

In this work, nano porous materials NiCuCoMn@TMOs were prepared by melt-spining and chemical delloying methods, and R-NiCuCoMn@TMOs were further prepared through heat treatment. The characterization of the material was analyzed by X-ray diffraction, scanning electron microscopy, and Xray photoelectron spectroscopy. The electrochemical performance testing of the electrodes was tested. As an anode material for lithium-ion batteries, R-NiCuCoMn@TMOs has a high capacity (394.9 mAh/g) at a current density of 0.1 A/g and exhibits an excellent capacity retention of 97.53% after 200 cycles. The material after heat treatment has the more abundant vacancies, lower charge transfer resistance (38 Ω) and better rate capability (with a specific capacity of 141.1 mAh/g at a current density of 2 A/g). Unique nano porous structure provides rich active site for reaction. The synergetic effect of multiple metal cations with different radius, valence states and reaction potentials makes R-NiCuCoMn@TMOs have a good volume tolerance to accommodate the volume change during the lithium-deintercalation process, and display a superior electrochemical performance. In addition, the raw material reserves of the electrode material are abundant, the price is low, and it is easy to realize mass production. This work provides a new idea for simple multielement transition metal oxide anode materials designing. [ABSTRACT FROM AUTHOR]