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

Lei Zu; Xing Gao; Huiqin Lian; Xiaomin Cai; Ce Li; Ying Zhong; Yicheng Hao; Yifan Zhang; Zheng Gong; Yang Liu; Xiaodong Wang; Xiuguo Cui

doi:10.3390/nano8060417

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

Nanomaterials (Basel). 2018 Jun 9;8(6):417. doi: 10.3390/nano8060417.

Authors

Lei Zu¹, Xing Gao^{2

3}, Huiqin Lian⁴, Xiaomin Cai^{5

6}, Ce Li^{7

8}, Ying Zhong⁹, Yicheng Hao¹⁰, Yifan Zhang¹¹, Zheng Gong¹², Yang Liu¹³, Xiaodong Wang³, Xiuguo Cui¹⁴

Affiliations

¹ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. zulei@bipt.edu.cn.
² School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. wangxd@mail.buct.edu.cn.
³ State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. wangxd@mail.buct.edu.cn.
⁴ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. lianhuiqin@bipt.edu.cn.
⁵ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. 13522433853@163.com.
⁶ State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. 13522433853@163.com.
⁷ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. lice0520@163.com.
⁸ State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. lice0520@163.com.
⁹ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. zhongying@bipt.edu.cn.
¹⁰ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. haoyicheng@bipt.edu.cn.
¹¹ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. zhangyifan@bipt.edu.cn.
¹² School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. gongzheng@bipt.edu.cn.
¹³ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. yang.liu@bipt.edu.cn.
¹⁴ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. cuixiuguo@bipt.edu.cn.

Abstract

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.

Keywords: electrochemical anodic exfoliation; graphene; iodide ions; phosphorus oxide group; supercapacitors.

Publication types

Letter