Hydrothermal synthesis and electrochemical performance of Fe-doped Co hydroxide electrode materials

In order to meet the growing energy demand, it is of great significance to develop high-performance electrochemical energy storage materials. In this paper, mesoporous Co-Fe nanowires binary hydroxide electrode materials were synthesized by a simple and effective hydrothermal method. Co-Fe binary hydroxide electrode materials are composed of a large number of nanowires with specific surface area of 7.34 m2 g−1 and the average pore size of 12.78 nm. The discharge-specific capacity of the electrode materials is 130.85 mA h g−1 at the current density of 1 A g−1. After charging and discharging at a current density of 5 A g−1 for 1000 time, the discharge-specific capacity retention rate of Co-Fe binary hydroxide electrode materials is 56.5%, and the Coulombic efficiency is almost 100%. Co-Fe binary hydroxide electrode materials show excellent electrochemical performance, indicating that doping with elements with similar chemical properties and multivalent states can effectively improve the electrochemical performance of electrode materials. This idea of doping with elements with similar chemical properties and multivalent states has a certain reference value for improving the performance of electrode materials.