Supercapacitors are widely used for powering flexible/wearable electronics owing to their excellent charge storage capabilities.In this study,MnO2 nanosheets were grown on the surface of graphene using a simple water bath method to prepare graphene/MnO2 composites for fabricating supercapacitors.In addition,two-dimensional black phosphorus was introduced as an additive into the electronic ink based on the as-prepared graphene/MnO2 composites.The characterization and electrochemical analyses results showed that adding black phosphorus considerably improved the capacitive performance of the material,yielding a high specific capacitance of 241.5 F g1 at 0.1 A g1 and an impressive rate capability improvement from 52.5％to 80.3％.Then the micro-supercapacitor having an area-specific capacitance of 20.15 mF cm-2 at a scanning rate of 2 mV s-1 was uti-lized to demonstrate the practical applicability of this material.To further evaluate the practical applicability of this micro-supercapacitor,the micro-supercapacitor was integrated with a flexible thin-film pressure sensor on paper and cloth through screen printing.

Baocheng Liu;Zongsheng Cao;Zhengchun Yang;Wen Qi;Jie He;Peng Pan;Huayi Li;Ping Zhang

School of Electrical and Electronic Engineering,Advanced Materials and Printed Electronics Center,Tianjin Key Laboratory of Film Electronic&Communication Devices,Tianjin University of Technology,Tianjin,300384,China;CISRI HIPEX Technology Co,LTD,China Iron&Steel Research Institute Group,Beijing,100081,China;School of Electrical and Information Engineering,Tianjin University,Tianjin,300072,PR China

自然科学进展·国际材料（英文）

[1]Baocheng Liu;Zongsheng Cao;Zhengchun Yang;Wen Qi;Jie He;Peng Pan;Huayi Li;Ping Zhang-.Flexible micro-supercapacitors fabricated from MnO2 nanosheet/graphene composites with black phosphorus additive)[J].自然科学进展·国际材料（英文）,2022(01):10-19

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