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Partially Graphitized Iron−Carbon Hybrid Composite as an Electrochemical Supercapacitor Material
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-04-22 , DOI: 10.1002/celc.202000377
Sai Rashmi Manippady 1 , Ashish Singh 2 , Chandra Sekhar Rout 1 , Akshaya Kumar Samal 1 , Manav Saxena 1
Affiliation  

The conversion of biomass into valuable carbon composites as an efficient non‐precious energy storage electrode material has elicited extensive research interest. An as‐synthesized partially graphitized iron oxide‐carbon composite material (Fe3O4/Fe3C@C) shows excellent properties as an electrode material for supercapacitor applications. X‐ray diffraction analysis, high‐resolution transmission electron microscopy, X‐ray photoelectron spectroscopy and Brunauer‐Emmett‐Teller analysis are used to study the structural, compositional and surface areal properties. The electrode material shows a specific surface area of 827.4 m2/g. Owing to the synergistic effect of the graphitic layers with iron oxide/carbide, Fe3O4/Fe3C@C hybrid electrode materials display a high performance when used in supercapacitors, with an excellent capacity of 878 F/g at a current density of 5 A/g (3‐electrode) and 211.6 F/g at a current density of 0.4 A/g (2‐electrode) in 6 M KOH electrolyte with good cyclic stability.

中文翻译:

部分石墨化的铁碳杂化复合材料作为电化学超级电容器材料

将生物质转化为有价值的碳复合材料作为一种有效的非贵金属储能电极材料引起了广泛的研究兴趣。合成的部分石墨化的氧化铁碳复合材料(Fe 3 O 4 / Fe 3 C @ C)作为超级电容器应用的电极材料表现出优异的性能。X射线衍射分析,高分辨率透射电子显微镜,X射线光电子能谱和Brunauer-Emmett-Teller分析用于研究结构,成分和表面面积特性。电极材料的比表面积为827.4m 2 / g。由于石墨层与氧化铁/碳化物Fe 3的协同作用O 4 / Fe 3 C @ C混合电极材料在超级电容器中使用时表现出很高的性能,在5 A / g(3电极)的电流密度下,其出色的容量为878 F / g,在3A电极下的电流密度为211.6 F / g。在6 M KOH电解质中具有0.4 A / g(2-电极)的电流密度,具有良好的循环稳定性。
更新日期:2020-04-22
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