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Porous Co_3O_4 with hexagonal bipyramid Structures From Metal-Organic Framework for Supercapacitors

Jinling Xu  Guancheng Xu  Chi Zhang  Li Zhang  
【摘要】:Owing to the structural diversity and easy-going synthesis,the metal-organicframeworks will be a new candidate of MOF-oxide approaches[1,2].Herein,porousCo_3O_(4 )hexagonal bipyramids have been synthesized viasimple and cost-effective approachesthrough calcination of acobalt-based metal-organicframework template.Supercapacitors based on the resulting two porous Co_3O_4hexagonal bipyramid structures as the electrodes exhibit high specific capacitances of 939 and929Fg~(-1).The abundant mesoporesand novel structures are of great significance for the electrochemical processes,which enhances the specific capacitance.The facile solidphaseconversion approaches can be easily extended to the scaling-upsynthesis of other porousmetal oxide-based functional materials with well-designed morphologies and architectures.

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