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Preparation of Eco-Friendly High-Performance Manganese Dioxide Supercapacitors by Linear Sweep Voltammetry

Junshan Zhao1,#, Yihan Shi1,#, Ming Zhang1, Liu Zhang1, Xumei Cui1, Xinghua Zhu2, Jitong Su1, Dandan Jing1, Dingyu Yang1,*

1 College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China
2 College of Intelligent Manufacturing, Sichuan University of Arts and Science, Dazhou, 635000, China

* Corresponding Author: Dingyu Yang. Email: email

(This article belongs to this Special Issue: Renewable and Green Materials for Supercapacitors)

Journal of Renewable Materials 2023, 11(1), 79-91.


In this paper, the non-polluting, non-toxic, and eco-friendly material-MnO2 electrodes were deposited on three-dimensional porous nickel (Ni) foam by linear sweep voltammetry, and the entire electrodeposition process did not require sintering of the material, which was fast and convenient while avoiding unnecessary energy consumption and thus was environmentally friendly. Scanning electron microscopy (SEM) and transmission electron microscopy were used to examine the surface and microscopic characteristics of each sample (TEM). Chronoamperometry (CA), cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) were then used to determine the electrochemical characteristics of the manufactured samples. The result suggests that the MnO2-sv80 electrode sample at a scan rate of 80 mV/s−1 has excellent performance for the supercapacitor electrode. The specific capacitance was as high as 531.4 F g−1 at a current density of 1 A g−1 and remained at 223.2 F g−1 at an ultra-high current density of 20 A g−1, with capacitance retention of 42%.


Cite This Article

Zhao, J., Shi, Y., Zhang, M., Zhang, L., Cui, X. et al. (2023). Preparation of Eco-Friendly High-Performance Manganese Dioxide Supercapacitors by Linear Sweep Voltammetry. Journal of Renewable Materials, 11(1), 79–91.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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