High Electrochemical Performance Phosphorus-Oxide Modified Graphene Electrode for Redox Supercapacitors Prepared by One-Step Electrochemical Exfoliation

Nanomaterials

Xiaomin Cai¹  Ce Li¹  Lei Zu¹  Yicheng Hao¹  Xing Gao¹  Yifan Zhang¹  Zheng Gong¹  Huiqin Lian¹  Yang Liu¹  Xiuguo Cui¹  Ying Zhong¹  Xiaodong Wang² 

[1] School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;

关键词: graphene;    electrochemical anodic exfoliation;    phosphorus oxide group;    supercapacitors;    iodide ions;   

DOI  :  10.3390/nano8060417

来源: DOAJ

【 摘 要 】

Phosphorus oxide modified graphene was prepared by one-step electrochemical anodic exfoliation method and utilized as electrode in a redox supercapacitor that contained potassium iodide in electrolytes. The whole preparation process was completed in a few minutes and the yield was about 37.2%. The prepared sample has better electrocatalysis activity for I−/I−3 redox reaction than graphite due to the good charge transfer performance between phosphorus oxide and iodide ions. The maximum discharge specific capacitance is 1634.2 F/g when the current density is 3.5 mA/cm2 and it can keep at 463 F/g after 500 charging–discharging cycles when the current density increased about three times.

【 授权许可】

Unknown