| 초록 |
We introduce a metallic cellulose paper-based supercapacitor electrode with excellent energy storage performance through the minimal of contact resistance between neighboring metal (or pseudocapacitive metal oxide) nanoparticles (NPs). For this study, hydrophobic metal NPs stabilized by bulky organic ligands were densely and multiply coated onto the highly porous cellulose papers using ligand exchange reaction that pristine ligands loosely bound to the surface of metal NPs are exchanged with small organic molecules during deposition. This adsorption converted the insulating paper to the porous metallic paper with large surface area that can be functioned as a current collector as well as a high-energy pseudocapacitive NP (PC NP) reservoir for supercapacitor electrode. Additionally, we demonstrated that the alternating structure design of metal NPs and PC NPs with poor electric conductivity onto the metallic papers could significantly increase areal capacitance and specific mass capacitance of electrodes. |
