石墨烯
气凝胶
超级电容器
氧化物
材料科学
抗坏血酸
比表面积
堆积
纳米技术
薄板电阻
氧化石墨烯纸
电化学
复合材料
化学工程
化学
电极
冶金
有机化学
图层(电子)
工程类
物理化学
食品科学
催化作用
作者
Soon Poh Lee,Gomaa A. M. Ali,H.H. Hegazy,Hong Ngee Lim,Kwok Feng Chong
出处
期刊:Energy & Fuels
[American Chemical Society]
日期:2021-02-22
卷期号:35 (5): 4559-4569
被引量:75
标识
DOI:10.1021/acs.energyfuels.0c04126
摘要
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.
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