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Optimizing Reduced Graphene Oxide Aerogel for a Supercapacitor
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-02-22 , DOI: 10.1021/acs.energyfuels.0c04126
Soon Poh Lee 1 , Gomaa A.M. Ali 2 , H.H. Hegazy 3 , Hong Ngee Lim 4 , Kwok Feng Chong 1
Affiliation  

Reduce graphene oxide (rGO) aerogels with different precursor graphene oxide sheet sizes are synthesized using l-ascorbic acid reduction followed by an ambient pressure drying method. The sheet sizes determine the oxygen functionality content during aerogel formation, which subsequently affect its structural properties. The optimized sheet size renders strong parallel sheet stacking to provide mechanical strength that withstands capillary action during aerogel formation with a high surface area (190.40 m2 g–1) and pore volume (0.261 cm3 g–1). Such surface properties enhance the electrochemical properties of rGO aerogel (182 F g–1 at 0.75 A g–1) and render it to be an excellent electrode material for a supercapacitor.

中文翻译:

优化超级电容器的还原氧化石墨烯气凝胶

使用1-抗坏血酸还原,然后采用常压干燥方法,合成了具有不同前体氧化石墨烯片尺寸的还原氧化石墨烯(rGO)气凝胶。片的尺寸决定了气凝胶形成过程中的氧官能度含量,其随后影响其结构性质。优化的纸张尺寸可实现牢固的平行纸张堆叠,从而提供机械强度,以承受气凝胶形成过程中的毛细作用,并具有较大的表面积(190.40 m 2 g –1)和孔体积(0.261 cm 3 g –1)。这种表面性能增强RGO气凝胶(182 F G的电化学性能-1在0.75 A克-1),使其成为超级电容器的极佳电极材料。
更新日期:2021-03-04
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