Porous reduced graphene oxide paper as a binder-free electrode for high-performance supercapacitors
Porous reduced graphene oxide paper as a binder-free electrode for high-performance supercapacitors
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多孔还原氧化石墨烯纸作为高性能超级电容器的无粘合剂电极
DOI:
10.1039/c5ra03717d
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发表时间:
2015-03
期刊:
影响因子:
3.9
通讯作者:
Peng, Xinsheng
中科院分区:
文献类型:
--
作者:
Ying, Yulong;Mao, Yiyin;Hua, Pan;Peng, Xinsheng
A facile template approach is developed to prepare highly conductive and flexible reduced graphene oxide (rGO) paper with hierarchical porous structures. When used as an electrode for a capacitor, these porous carbon layers demonstrate an enhanced electrochemical performance due to their large ion-accessible surface area and efficient electrolyte-ion transport pathways. The porous rGO electrode delivers a specific capacity of 173.5 F g−1, almost 1.8 times higher than 95.1 F g−1 of packed rGO. More importantly, the porous electrode also exhibits a good electrochemical performance with an energy density of 28.5 W h kg−1 and power density of 4000 W kg−1, as well as excellent cycling stability with 101.5% of its initial capacitance after 2000 charge–discharge cycles at a current density of 5 A g−1.
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