In the context of “carbon neutrality,” supercapacitors, as a green energy -saving material, have shown advantages such as fast charging and discharge, high power and bicycle performance. well, which created a wave of research among the students. Among them, the electrodes are one of the main factors determining the electrochemical performance of supercapacitors. The microscopic morphology, energy saving, capacitance and safety of the electrode materials have a significant impact on the performance and utilization of supercapacitors.
In order to increase the energy efficiency and electrochemical performance of supercapacitors, the researchers selected flexible metal oxides with high theoretical capacitance; however, everything is problematic such as the small size of the surface, the small number of work areas and the failure of construction due to size and change in size.
Wenjing Zhang from the Department of Science and Engineering of Jiangsu University, and co -workers have designed and prepared a manganese dioxide / carbon nanosheet composite material that will solve the morphology and size of the supply chain problems. the powder electrode material. This article is published in Limitations of Chemistry and Engineering on February 24, 2022.
“After carbonization of tripotassium citrate monohydrate and HNO3 acidification, a powerful CNS was formed for the simultaneous growth of MnO2 on its skin, depleting MnO2 granules with different shapes and bulk aggregates. “said Zhang.
“The growth of HNO3 has performed a number of functional groups for the fusion of CNS and MnO2 nanosheets, which provide important transfer and response sites for ions from the electrolyte and promote the electrochemical performance of the composite. Carbon materials provide excellent conductivity and stability under strong current; Therefore, the composite showed a good computational ability. “
Thanks to the compression and correction effect of ultra-thin carbon nanosheets, the MnO2/ CNS composite shows better electrochemical properties compared to carbon nanosheet monomer and MnO2 monomer: the higher the specific capacitance at the same voltage, the better the increase in current volume, and the lower the voltage inside the electrode.
“Research has shown that ultra-thin carbon nanosheets obtained from tripotassium citrate monohydrate can be used as a substrate for the growth of manganese dioxide,” said Xuehua Yan, co-author of this study. coming from the Department. for Materials Science and Engineering at Jiangsu University.
“The electrochemical properties of manganese dioxide are improved by regulating its distribution.
Ternary bead-chain nanocomposites are specifically designed for supercapacitors
Wenjing Zhang et al, Tripotassium citrate monohydrate obtained in carbon nanosheets as a potential adjuvant to manganese dioxide with amazing action as a supercapacitor, Limitations of Chemistry and Engineering (2021). DOI: 10.1007 / s11705-021-2065-7
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Directions: Carbon nanosheets as a ready-to-treat manganese dioxide show amazing performance in supercapacitors (2022, March 29) Retrieved 29 March 2022 from https://phys.org/news/2022-03 -carbon-nanosheets-manganese-dioxide-remarkable. html
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