Citation: Ma Ran, Li Chen, Zhang Xiong. Preparation of Mesoporous Graphene by Magnesiothermic Reduction of CO₂ and It's Capacitance Characteristics[J]. Chemistry, ;2017, 80(8): 745-750, 759. shu

Preparation of Mesoporous Graphene by Magnesiothermic Reduction of CO₂ and It's Capacitance Characteristics

Ma Ran ¹ ,
Li Chen ² ,
Zhang Xiong ^2,,

1.
Beijing Bayi School, Beijing 100080
2.
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190

Corresponding author: Zhang Xiong, zhangxiong@mail.iee.ac.cn
Received Date: 18 January 2017
Accepted Date: 3 March 2017

Figures(7)

Graphene materials with ample mesopores were prepared by a magnesiothermic reaction using CO₂ as carbon source. XRD, SEM, TEM, Raman spectroscopy and N₂ desorption/adsorption were used to characterize the microstructure of graphene materials. It was found that the morphologies and pore structure of graphene were controllable simply by changing the mass ratio of Mg and MgO in the starting materials. The product (MRG-8) obtained with MgO/Mg mass ratio of 8:1 showed a uniform mesopore size of 4 nm. The electrochemical properties of products were also evaluated. In 1 mol/L KOH electrolyte, MRG-8 displayed a high specific capacitance of 171 F/g and an excellent rate performance. The capacitance retention rate of MRG-8 is up to 94% after 12000 cycles. Using ionic liquid [EMIM][BF₄] as electrolyte, symmetric supercapacitors of MRG-8 exhibited an ultra-high power density of 175kW/kg and a corresponding energy density of 28.1kW/kg. This work is expected to offer a novel method for mesoporous graphene production, which may be promising in the application of high-power supercapacitors.
- Magnesiothermic reaction,
- Mesoporous,
- Graphene,
- Power density
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of Mesoporous Graphene by Magnesiothermic Reduction of CO2 and It's Capacitance Characteristics

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通讯作者: 陈斌, bchen63@163.com

Preparation of Mesoporous Graphene by Magnesiothermic Reduction of CO₂ and It's Capacitance Characteristics