Abstract
It is a challenge to achieve pure graphene foams with a desired monolithic structure in order to take advantage of the excellent properties of graphene-based macroscopic assemblies. Here, we introduced a confinement fabrication strategy to prepare nitrogen doped reduced graphene oxide foams (NrGFs) through a one-step hydrothermal process. The melamine foam (MF) skeleton was removed during the hydrothermal reaction, and the NrGF retained its desired monolithic structure by the confinement of solution ionic strength. Due to the "roof-tile-like" microscopic morphology with high N-doping (9.88 at%), the free-standing graphene foam electrode exhibited excellent capacitive performance. The resulting NrGF-based symmetric supercapacitor displayed a remarkably enhanced specific capacitance of 260 F g-1 at 0.1 A g-1 and 173 F g-1 at 20 A g-1 in an aqueous electrolyte. Moreover, the facility of fabrication makes it a promising material in many contexts for large scale production, such as energy storage, environmental remediation and strain sensors. Furthermore, this synthesis strategy can be expanded to prepare other pure macroporous foams or composites by using different building blocks (such as CNTs and MXene).
References
Sep 6, 2008·Nature Nanotechnology·Yenny HernandezJonathan N Coleman
Jul 2, 2010·ACS Nano·Yuxi XuGaoquan Shi
Aug 1, 2009·Nature Chemistry·Wei GaoPulickel M Ajayan
Apr 12, 2011·Nature Materials·Zongping ChenHui-Ming Cheng
Jun 24, 2011·Nanoscale·Wufeng Chen, Lifeng Yan
May 1, 2012·Advanced Materials·Zhiqiang NiuXiaodong Chen
Jul 19, 2012·Advanced Materials·Zhong-Shuai WuKlaus Müllen
Jan 10, 2013·Advanced Materials·Zongping ChenHui-Ming Cheng
Aug 6, 2013·Advanced Materials·Chao WuPingkai Jiang
Oct 18, 2013·Scientific Reports·Ying TaoQuan-Hong Yang
Jan 1, 2014·Nano Letters·Jiepeng RongChongwu Zhou
May 8, 2014·ACS Applied Materials & Interfaces·By Shun MaoJunhong Chen
Jun 24, 2014·Chemical Society Reviews·Xuewan WangPeng Chen
Dec 19, 2014·Nanoscale·Shuijian He, Wei Chen
Feb 11, 2015·Nanoscale·Liang KouChao Gao
Apr 16, 2015·ACS Applied Materials & Interfaces·Yarjan Abdul SamadKin Liao
Jul 15, 2015·Small·Zicheng ZuoYuliang Li
Dec 5, 2015·ACS Nano·Xusheng DuYiu-Wing Mai
Mar 22, 2016·Current Biology : CB·Qianwei LiGeoffrey Michael Gadd
Nov 3, 2016·ACS Applied Materials & Interfaces·Evan D WalshYi Lin
Oct 21, 2016·Angewandte Chemie·Xiaopeng WangLiangti Qu
Nov 20, 2016·Advanced Materials·Xinzhi YuBingan Lu
Apr 4, 2017·Nature Nanotechnology·Jin GeShu-Hong Yu
Feb 8, 2018·Chemical Society Reviews·Bocheng QiuJinlong Zhang
Mar 7, 2018·Nanoscale·Conor S BolandJonathan N Coleman
Citations
Jun 20, 2019·Small·Wenchao BiGuozhong Cao
Oct 31, 2019·Small·Yuanyuan ZhangNianjun Yang
May 3, 2021·Advances in Colloid and Interface Science·Enrique Garcia-BordejéW K Maser