Coelectrodeposition of crystalline copper-manganese oxide containing CuMn2O4 spinel for high energy supercapacitor application
Source abstract
Abstract
Abstract In this study, copper manganese oxide films with various compositions were synthesized using electrochemical deposition technique. In order to achieve different chemical compositions, the influence of sodium citrate as a complex agent was investigated. Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Brunauer-Emmet-Teller adsorption (BET) were used to study the morphology, chemical composition, crystal structure and surface area of deposited layers, respectively. We observed that by optimizing the citrate concentration in the electrodeposition electrolyte, improved capacitance of 744 F/g at 10 mV/s with retention capacitance of 91% over 10,000 cycles can be achieved. The obtained stability of copper-manganese oxide is 3 times and about 2 times higher than pristine copper oxide and manganese oxide, respectively. The enhanced stability of the achieved crystalline copper-manganese oxide ascribe to formation of CuMn2O4 spinel, improved ultrafine structure and a better chemical stability.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Copper-based nanomaterials and applications · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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