Asymmetric flow electrochemical capacitor with high energy densities based on birnessite-type manganese oxide nanosheets and activated carbon slurries
Source abstract
Abstract
Birnessite-type manganese oxide materials applied as supercapacitor electrodes are widely investigated, but they have not been studied as a new type of energy storage system—flow electrochemical capacitor based on flowable slurry electrodes. In the present work, the electrochemical performances of the slurry based on birnessite-type manganese oxide nanosheets were investigated. As compared to the manganese oxide slurry prepared through ball-milling, the slurry obtained through ultrasonic oscillation showed higher specific capacitances, which was attributed to higher electronic conductivity of the latter slurry. The birnessite-type manganese oxide slurry was further assembled with activated carbon slurry to obtain asymmetric flow capacitor. This asymmetric device exhibited high energy densities, such as an energy density of 9.4 W h kg−1 at a power of 94.5 W kg−1, which makes them attractive for the application as a flow electrochemical capacitor.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advanced battery technologies research · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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