Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

Nanomaterials

Mu. Naushad¹  Saikh Wabaidur¹  ZeidA. Alothman¹  AhmadYacine Badjah¹  Mohamed Habila¹  Jie Wang²  AbeerEnaiet Allah²  Alowasheeir Azhar²  MohamedBarakat Zakaria²  Yusuke Yamauchi³ 

[1] Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;

关键词: nanoporous materials;    iron oxide;    carbon composites;    Prussian blue;    supercapacitors;   

DOI  :  10.3390/nano9050776

来源: DOAJ

【 摘 要 】

This work reports the successful preparation of nanoporous iron oxide/carbon composites through the in-situ growth of Prussian blue (PB) nanoparticles on the surface of graphene oxide (GO) nanosheets. The applied thermal treatment allows the conversion of PB nanoparticles into iron oxide (Fe₂O₃) nanoparticles. The resulting iron oxide/carbon composite exhibits higher specific capacitance at all scan rates than pure GO and Fe₂O₃ electrodes due to the synergistic contribution of electric double-layer capacitance from GO and pseudocapacitance from Fe₂O₃. Notably, even at a high current density of 20 A g⁻¹, the iron oxide/carbon composite still shows a high capacitance retention of 51%, indicating that the hybrid structure provides a highly accessible path for diffusion of electrolyte ions.

【 授权许可】

Unknown