"Composites made of magnetic oxides or transition metal sulfdes with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability."
So Cobalt or other magnetic oxide and graphite or graphene composite. The cobalt refinery may not be critical but the battery research and graphite/graphene polymer research is.
Aug 28, 2020 · Supercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g−1 is not adequate for supercapacitor applications.
- Author: M. I. A. Abdel Maksoud, Ramy Amer Fahim, Ahmed Esmail Shalan, Ahmed Esmail Shalan, M. Abd Elkodous, ...
- Publish Year: 2021
TLG - Media, page-15899
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