Journal
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
Volume 20, Issue 4, Pages 2077-2098Publisher
WILEY
DOI: 10.1111/ijac.14377
Keywords
manganese dioxide; morphology; multicomposite materials; supercapacitor
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Materials and electrochemical energy storage (EES) technologies are leading the global effort to address sustainable energy supply issues with excellent performance. Supercapacitors, widely studied among EES technologies, show fast charging rates under high-power conditions. However, the low conductivity of manganese dioxide (MnO2) hinders its widespread use, and therefore, combining nanomaterials and various morphologies of MnO2 can enhance the electrochemical performance of supercapacitors.
The development of materials and electrochemical energy storage (EES) technologies are currently taking the lead and showing excellent performance in the global effort to tackle the issues of sustainable energy supply. Supercapacitors have been widely studied among the EES technologies as they exhibit quick charging rates under high-power conditions. Manganese dioxide (MnO2) has attracted renewed interest as a promising material due to its high theoretical capacitance and high energy density. However, the widespread application is immediately impacted by low conductivity. Hence, combining nanomaterials and various morphologies of MnO2 can improve the electrochemical performance of supercapacitors. This paper presents a review based on the composites of nanomaterials/MnO2 with various morphologies. Their mechanism and practical applications in supercapacitors are introduced in detail. Finally, the challenges and next steps in developing MnO2 electrode materials are proposed.
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