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Updated: Jun 29, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Rational Design of NiCo-borate/GO Heterojunction as a High-Performance Supercapacitor Electrode
Pinghua Chen1,2, Huanghuang Song1,2, Zilong Zou1,2
1Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institution College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
Abstract:
The bottleneck in the preparation of supercapacitors is how to develop high-energy and high-power-density devices by using appropriate materials. Herein, a novel NiCo3--B/GO heterostructure material was synthesized through a simple ultrasonic and precipitation method. The prepared NiCo3--B/GO heterostructure exhibits significant improvements in supercapacitor performance than NiCo3--B. The presence of GO effectively suppresses the excessive growth and accumulation of NiCo3--B; therefore, Ni2.7Co0.3-B/GO exhibits the best performance as an electrode material for supercapacitors: a high specific capacitance (Cm, 1789.72 F g-1@1 A g-1) and excellent rate performance. The asymmetric supercapacitor (ASC) device of Ni2.7Co0.3-B/GO//AC exhibits a Cm of 76.6 F g-1@1 A g-1, a large voltage window of 1.6 V, and a high energy density (ED) of 98.0 Wh kg-1. Furthermore, a flexible, all-solid-state supercapacitor assembled with Ni2.7Co0.3-B/GO as both the positive and negative electrodes demonstrates a Cm of 46.9 F g-1@1 A g-1. Even after multiple folding and bending at various angles, the device maintains excellent performance, showcasing remarkable stability. With a power density (PD) of 479.7 W kg-1, the device achieves a high ED of 60.0 Wh kg-1. This work provides valuable insights into the synergistic effects in electrochemical processes based on heterostructure materials.
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