Enhanced Charge Storage Performance and Electrocatalytic Oxygen Evolution Reaction Activity of Self-Grown Iron–Cobalt-Doped Nickel Oxide Nanoplates: An Example of the Synergistic Effect

作者：Ahmed H. Al-Naggar, Vijaykumar V. Jadhav, Shoyebmohamad F. Shaikh, Raisuddin Ali, Rajaram S. Mane · 发表于：Energy & Fuels · 年份：2024 · DOI：10.1021/acs.energyfuels.4c04832 · 被引用次数：9 · 研究领域：Electrocatalysts for Energy Conversion、Advanced battery technologies research、Electrochemical Analysis and Applications

The synergistic electrochemical properties of a rational design transition metal oxide can improve its efficiency. However, the optimal synergistic effect of transition metal oxide nanostructures toward energy storage and conversion is still unsatisfactory. Herein, a simple, efficient wet chemical synthesis method is promoted for the incorporation of iron and cobalt ions into the nickel oxide matrix as (Fe–Co-doped NiO), with excellent high energy storage and electrocatalytic OER performance. Importantly, the correlation between varying amounts of Fe–Co-doped NiO electrodes and catalysts with different surface morphologies, crystallographic phases, and electrochemical activities was investigated. Benefiting from strong synergistic action, rich oxygen vacancies, oxidation behavior, transferred ion diffusion, and morphology, the 5 wt % Fe and Co-doped NiO electrode (5 wt % Fe–Co–NiO) exhibit a better specific capacitance of 5419.3 F g –1 at a current density of 2 A g –1, which is better than that of the pristine NiO (530.4 F g –1 ). Similarly, a 5 wt % Fe–Co–NiO//5 wt % Fe–Co–NiO symmetric device provides a superb volumetric energy power density (47.9 Wh kg –1 /545.8 WK g –1 ). It also demonstrates durable redox cycle life with 92.86% retention after 10,000 redox cycles scanned at a current density of 10 A g –1 . At the same time, a panel consisting of 42 red light-emitting diodes (LEDs) with a voltage of approximately 1.5 V has been successfully illuminated for five min, exhib...