کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1288019 | 1498001 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Highly ordered mesoporous phenol–formaldehyde carbon as supercapacitor electrode material Highly ordered mesoporous phenol–formaldehyde carbon as supercapacitor electrode material](/preview/png/1288019.png)
Highly ordered, body-centered cubic mesoporous phenol–formaldehyde carbon C-FDU-16 is prepared by a facile evaporation induced self-assembly strategy under a basic aqueous condition. Afterwards, in order to increase the active site of surface electrochemical reactions and promote the wettability in aqueous electrolyte, a simple chemical surface modification is carried out on the C-FDU-16 by nitric acid treatment. The C-FDU-16 and the acid-modified C-FDU-16 (N-FDU-16) are used as the active materials for supercapacitors. Although C-FDU-16 has unique 3D mesoporous network combined with high specific surface area, it do not show well supercapacitor properties for its bad wettability with the aqueous electrolyte. However, the N-FDU-16 with acid treatment exhibits the largest specific capacitance of 219 F g−1 at a current density of 0.1 A g−1 in 1 M H2SO4 electrolyte which is 7 times larger than that of the C-FDU-16 and it also shows good cycling stability as well. Therefore, based on the above investigations, ordered mesoporous phenol–formaldehyde carbon such as C-FDU-16 can be a potential candidate for supercapacitors after the simply acid treatment.
► The C-FDU-16 was synthesized and modified by nitric acid treatment.
► The N-FDU-16 with acid-modification possesses good supercapacitive properties.
► The N-FDU-16 exhibits 7 times larger capacitance than the C-FDU-16.
► The N-FDU-16 shows excellent cycling stability after 10000 cycles.
Journal: Journal of Power Sources - Volume 231, 1 June 2013, Pages 197–202