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Nanomaterials 2018, 8(6), 417; https://doi.org/10.3390/nano8060417

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

1
School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
*
Author to whom correspondence should be addressed.
Received: 18 May 2018 / Revised: 4 June 2018 / Accepted: 4 June 2018 / Published: 9 June 2018
(This article belongs to the Special Issue Nanomaterials and Nanofabrication for Electrochemical Energy Storage)
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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/I3 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. View Full-Text
Keywords: graphene; electrochemical anodic exfoliation; phosphorus oxide group; supercapacitors; iodide ions graphene; electrochemical anodic exfoliation; phosphorus oxide group; supercapacitors; iodide ions
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zu, L.; Gao, X.; Lian, H.; Cai, X.; Li, C.; Zhong, Y.; Hao, Y.; Zhang, Y.; Gong, Z.; Liu, Y.; Wang, X.; Cui, X. High Electrochemical Performance Phosphorus-Oxide Modified Graphene Electrode for Redox Supercapacitors Prepared by One-Step Electrochemical Exfoliation. Nanomaterials 2018, 8, 417.

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