{"title":"Microwave-Assisted Hydrothermal Synthesis of MnO/C Composite in the Presence of Ascorbic Acid","authors":"G. S. Zakharova, Z. A. Fattakhova, A. A. Trofimov","doi":"10.1134/S0036023624602903","DOIUrl":null,"url":null,"abstract":"<p>Composites MnO/C based on cubic manganese monoxide were synthesized by microwave-assisted hydrothermal treatment of an aqueous solution of potassium permanganate with ascorbic acid and subsequent annealing of the precursor in an inert atmosphere at a temperature of 500°C. It was found that the molar ratio of the reaction mixture components, Mn : C<sub>6</sub>H<sub>8</sub>O<sub>6</sub> = 1 : (0.75‒1.5), is the key parameter determining the features of composite formation. A mechanism of formation of the MnO/C composite was proposed. The maximum carbon content in the composite material was ~3 wt %. The main physicochemical characteristics of the synthesized composites were determined using powder X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, scanning electron microscopy, and low-temperature nitrogen adsorption. The behavior of MnO/C as an anode material for a lithium-ion battery showed that the composite is efficient only at high current densities.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1844 - 1852"},"PeriodicalIF":1.8000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036023624602903","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Composites MnO/C based on cubic manganese monoxide were synthesized by microwave-assisted hydrothermal treatment of an aqueous solution of potassium permanganate with ascorbic acid and subsequent annealing of the precursor in an inert atmosphere at a temperature of 500°C. It was found that the molar ratio of the reaction mixture components, Mn : C6H8O6 = 1 : (0.75‒1.5), is the key parameter determining the features of composite formation. A mechanism of formation of the MnO/C composite was proposed. The maximum carbon content in the composite material was ~3 wt %. The main physicochemical characteristics of the synthesized composites were determined using powder X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, scanning electron microscopy, and low-temperature nitrogen adsorption. The behavior of MnO/C as an anode material for a lithium-ion battery showed that the composite is efficient only at high current densities.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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