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Issue 32, 2017
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Graphene oxide induced hydrothermal carbonization of egg proteins for high-performance supercapacitors

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Abstract

Hydrothermal carbonization (HTC) is a conventional method to synthesise biomass-derived carbon materials. However, hydrothermal treatment of proteins usually induces the decomposition of these biopolymers without forming carbonaceous materials. Here, we report the use of graphene oxide sheets as a template and catalyst to carbonize egg proteins via HTC. The resulting egg protein derived carbon/reduced graphene oxide (EDC/rGO) composite was further activated using KOH to produce a highly porous heteroatom-doped carbon material and used as an electrode material for a supercapacitor. The typical supercapacitor exhibited a high specific capacitance (482 F g−1 at a current density of 0.1 A g−1), good rate capability and excellent cycling stability (∼100% capacitance retention after 10 000 cycles of charging and discharging at 5 A g−1). Considering the high efficiency of the HTC process and the low cost of eggs, this work demonstrates a facile approach to produce high-performance carbon-based electrode materials for supercapacitors.

Graphical abstract: Graphene oxide induced hydrothermal carbonization of egg proteins for high-performance supercapacitors

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Publication details

The article was received on 01 Jun 2017, accepted on 19 Jul 2017 and first published on 19 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04771A
Citation: J. Mater. Chem. A, 2017,5, 17040-17047
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    Graphene oxide induced hydrothermal carbonization of egg proteins for high-performance supercapacitors

    H. Ma, C. Li, M. Zhang, J. Hong and G. Shi, J. Mater. Chem. A, 2017, 5, 17040
    DOI: 10.1039/C7TA04771A

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