Nanocellulose has served as an eye-catching nanomaterial for constructing advanced functional devices with renewability,light weight,flexibility,and environmental friendliness.In this study,Co3O4/graphene/cellulose nanofiber(CNF)flexible composite films,in which the CNF acted as a spacer for the graphene,were prepared via a facile and scalable vacuum filtration method.The effects of the CNF on the microstructure,hydrophilicity,thermal stability,tensile strength,surface resistance,and electrochemical performance of the Co3O4/graphene/CNF composite films were systematically investigated.The results showed that the synergistic interaction of the CNF and graphene substantially improved the overall properties of the Co3O4/graphene/CNF composite films,particularly their hydrophilicity and tensile strength.Meanwhile,Co3O4/graphene/CNF composite films with a CNF content of 4％appeared to have the optimal electrochemical performance,with an area specific capacitance of 56 mF/cm2 and prominent capacitance retention of 95.6％at a current density of 1 A/g after 1000 cycles.This work demonstrated that the prepared Co3O4/graphene/CNF flexible composite films have great application potential in the field of flexible energy storage devices.

Zejun Ding;Tianying Chen;Yiming Zhou;Peng Zhu;Feiyun Li;Yanjun Tang

Pulp and Papermaking Center Zhejiang Sci-Tech University,Hangzhou,Zhejiang Province,310018,China;Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province,Zhejiang Sci-Tech University,Hangzhou,Zhejiang Province,310018,China

造纸与生物质材料（英文）

[1]Zejun Ding;Tianying Chen;Yiming Zhou;Peng Zhu;Feiyun Li;Yanjun Tang-.Preparation and Characterization of Co3O4/Graphene/Cellulose Nanofiber Composite Films)[J].造纸与生物质材料（英文）,2022(02):27-36

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