Lu Sun, Jinzhang Liu, Yan Li*
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Nano-Micro Conference, 2017, 1, 01074
Published Online: 16 November 2017 (Abstract)
Citation Information: Lu Sun, Jinzhang Liu, Yan Li, Gram-scale production of nanoporous graphene by Mg-thermoreduction of CS2 for electrochemical energy storage. Nano-Micro Conference, 2017, 1, 01074 doi: 10.11605/cp.nmc2017.01074
Received: 31 May 2017, Accepted: 13 June 2017, Published Online: 16 November 2017
Mass production of porous carbon at low cost for supercapacitor applications is highly desired. Herein, for the first time we report a novel method to grow porous 3D graphene by using Mg to reduce CS2 vapor. In a tube furnace the mixture of Mg and NaCl powders are heated at 570 oC and reacted with CS2 vapor carried by an Ar flow. The Mg powder can be about 95% consumed and the weight of resultant carbon nanomaterial is in gram scale after one experiment. This 3D graphene product with specific surface area of 980 cm2/g is processed into electrodes for electrochemical test, showing a specific capacitance of 212 F/g at 1 A/g in H2SO4 aqueous electrolyte. Besides, the electrode is continuously charged/discharged at 5 A/g for 10,000 cycles and its capacitance remains 98.5% of the original value.
Figure 1. (a) and (b) SEM images of the 3D graphene product at low and high magnifications.
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