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

IF 0.5 Q4 ENGINEERING, CHEMICAL
N. S. Zakharov, N. M. Federova, T. A. Larichev, G. Yu. Simenyuk, R. S. Parshkov, I. Yu. Zykov, A. P. Nikitin
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引用次数: 0

摘要

确定了将1 M硝酸溶液应用于用于超级电容器电极的炭化腐泥煤的最佳时间:需要在100°C下改性10分钟。在不同的电位扫描速率下,这种方法使所得电极材料的比电容平均增加20%。吸附测量表明,硝酸对碳酸盐的改性增加了平均介孔尺寸。在吸收法制备Co3O4/C纳米复合材料的过程中,前驱体硝酸钴(II)在炭化物表面和孔隙中进行热分解,硝酸对碳基体进行改性的最佳时间为100℃下15 min。所得纳米复合材料的比电容为~359 F/g。这是初始电极材料的1.25倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Nanostructured Supercapacitor Electrode Composites Derived from Carbonized Sapropelic Coal Filled with Cobalt(II, III) Oxide Nanoparticles

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.

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来源期刊
Coke and Chemistry
Coke and Chemistry ENGINEERING, CHEMICAL-
CiteScore
0.70
自引率
50.00%
发文量
36
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.
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