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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Biomass waste derived multi-hierarchical porous carbon combined with CoFe2O4 as advanced electrode materials for supercapacitors
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Biomass waste derived multi-hierarchical porous carbon combined with CoFe2O4 as advanced electrode materials for supercapacitors

机译：生物质废物衍生的多层次多孔碳结合CoFe2O4作为超级电容器的先进电极材料

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摘要

As a common seafood waste, crab was employed as the biomass carbon source to synthesize porous carbon materials, and used as supercapacitor electrode materials. The multi-hierarchical porous structure can be obtained by a novel three-step method. The crab derived carbon exhibited a specific capacitance of 320.4 Fg(-1) at a current density of 1 Ag-1, and demonstrated the impressive cycling stability over 20000 cycles with 91.3% of retention at 1 Ag-1. Additionally, the crab derived carbon was combined with CoFe2O4 , a typical pseudocapacitive active material, to develop an advanced hybrid supercapacitor. The results indicated that the ratio of CoFe2O4 to crab derived carbon affected capacitive performances of the composites. The optimal sample yielded a high specific capacitance of 701.8 Fg(-1) at 1 Ag-1. Moreover, it displayed the excellent cycling performance over 10000 cycles with 90.9% of capacitance retention. Such green and high-performance hybrid electrodes are in accordance with the principle of "waste to treasure", showing great potential in energy storage applications. (C) 2018 Elsevier B.V. All rights reserved.
机译：作为常见的海产废物，螃蟹用作生物质碳源，以合成多孔碳材料，用作超级电容器电极材料。多等级多孔结构可以通过新颖的三步方法获得。蟹衍生的碳在电流密度为1％Ag-1的情况下表现出320.4FG（-1）的特定电容，并在20000次循环中显示出令人印象深刻的循环稳定性，在1％Ag-1处保持91.3％。另外，螃蟹衍生的碳与CoFe2O4，典型的假壳活性材料组合，以开发一种先进的杂交超级电容器。结果表明，COFE2O4与蟹衍生的碳的比例影响复合材料的电容性能。最佳样品在1％Ag-1处产生701.8 fg（-1）的高比电容。此外，它显示出优异的循环性能超过10000周期，电容保留的90.9％。这种绿色和高性能的混合电极符合“浪费到宝藏”的原理，在储能应用中显示出巨大的潜力。 （c）2018年elestvier b.v.保留所有权利。

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