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Co3O4@Highly ordered macroporous carbon derived from a mollusc shell for supercapacitors

机译:Co3O4 @来自软体动物壳的高度有序的大孔碳,用于超级电容器

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摘要

Bio-derived honeycomb-like ordered macroporous carbon with highly interconnected hexangular channels and excellent electronic conductivity is prepared by carbonizing the organic matrix of mollusc shells. The unique structure ensures fast electron transfer throughout the entire three-dimensional network and effective electrolyte penetration, which makes the mollusc shell derived carbon network (MSDCN) an ideal substrate for supercapacitor electrodes. Via a simple hydrothermal process, cubic Co3O4 was incorporated with the MSDCN, and the as-obtained Co3O4@MSDCN exhibits an outstanding electrochemical performance with high specific capacitance (1307 F g(-1) at 1 A g(-1)), impressive rate performance (with a capacity retention of 61.0% at 20 A g(-1)) and long cycle life (84% of the initial capacitance remained after 3000 cycles at 5 A g(-1)).
机译:通过碳化软体动物壳的有机基质,可以制备出生物来源的蜂窝状有序大孔碳,具有高度互连的六角形通道和出色的电子传导性。独特的结构可确保在整个三维网络中快速进行电子转移,并有效地渗透电解质,这使得软体动物壳衍生碳网络(MSDCN)成为超级电容器电极的理想基材。通过简单的水热过程,将立方Co3O4与MSDCN结合在一起,如此获得的Co3O4 @ MSDCN表现出出色的电化学性能和高比电容(在1 A g(-1)时为1307 F g(-1))速率性能(在20 A g(-1)下的容量保持率为61.0%)和长循环寿命(在5 A g(-1)下进行3000次循环后,仍保留了84%的初始电容)。

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