N. S. Zakharov, N. M. Federova, T. A. Larichev, G. Yu. Simenyuk, R. S. Parshkov, I. Yu. Zykov, A. P. Nikitin
{"title":"炭化腐泥煤填充钴(II, III)氧化物纳米颗粒制备的纳米结构超级电容器电极复合材料","authors":"N. S. Zakharov, N. M. Federova, T. A. Larichev, G. Yu. Simenyuk, R. S. Parshkov, I. Yu. Zykov, A. P. Nikitin","doi":"10.3103/S1068364X25600733","DOIUrl":null,"url":null,"abstract":"<p>The optimal time for applying 1 M nitric acid solution to carbonized sapropelic coal that is intended for use in supercapacitor electrodes is determined: modification for 10 min at 100°C is required. This approach increases the specific capacitance of the resulting electrode material by 20%, on average, with different potential scanning rates. Sorption measurements establish that modification of the carbonizate by nitric acid increases the mean mesopore size. In turn, in the production of Co<sub>3</sub>O<sub>4</sub>/C nanocomposite by an absorption method, with subsequent thermal decomposition of the precursor—cobalt(II) nitrate—at the surface and within the pores of the carbonizate, the optimal time for modification of the carbon matrix by nitric acid is 15 min at 100°C. The specific capacitance of the resulting nanocomposite is ~359 F/g. That is 1.25 times the value for the initial electrode material.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 6","pages":"535 - 540"},"PeriodicalIF":0.5000,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanostructured Supercapacitor Electrode Composites Derived from Carbonized Sapropelic Coal Filled with Cobalt(II, III) Oxide Nanoparticles\",\"authors\":\"N. S. Zakharov, N. M. Federova, T. A. Larichev, G. Yu. Simenyuk, R. S. Parshkov, I. Yu. Zykov, A. P. Nikitin\",\"doi\":\"10.3103/S1068364X25600733\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The optimal time for applying 1 M nitric acid solution to carbonized sapropelic coal that is intended for use in supercapacitor electrodes is determined: modification for 10 min at 100°C is required. This approach increases the specific capacitance of the resulting electrode material by 20%, on average, with different potential scanning rates. Sorption measurements establish that modification of the carbonizate by nitric acid increases the mean mesopore size. In turn, in the production of Co<sub>3</sub>O<sub>4</sub>/C nanocomposite by an absorption method, with subsequent thermal decomposition of the precursor—cobalt(II) nitrate—at the surface and within the pores of the carbonizate, the optimal time for modification of the carbon matrix by nitric acid is 15 min at 100°C. The specific capacitance of the resulting nanocomposite is ~359 F/g. That is 1.25 times the value for the initial electrode material.</p>\",\"PeriodicalId\":519,\"journal\":{\"name\":\"Coke and Chemistry\",\"volume\":\"68 6\",\"pages\":\"535 - 540\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2025-09-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Coke and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068364X25600733\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coke and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068364X25600733","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Nanostructured Supercapacitor Electrode Composites Derived from Carbonized Sapropelic Coal Filled with Cobalt(II, III) Oxide Nanoparticles
The optimal time for applying 1 M nitric acid solution to carbonized sapropelic coal that is intended for use in supercapacitor electrodes is determined: modification for 10 min at 100°C is required. This approach increases the specific capacitance of the resulting electrode material by 20%, on average, with different potential scanning rates. Sorption measurements establish that modification of the carbonizate by nitric acid increases the mean mesopore size. In turn, in the production of Co3O4/C nanocomposite by an absorption method, with subsequent thermal decomposition of the precursor—cobalt(II) nitrate—at the surface and within the pores of the carbonizate, the optimal time for modification of the carbon matrix by nitric acid is 15 min at 100°C. The specific capacitance of the resulting nanocomposite is ~359 F/g. That is 1.25 times the value for the initial electrode material.
期刊介绍:
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.