Izvorni znanstveni članak
Layer-by-Layer Self-Assembled Graphene Multilayer Films via Covalent Bonds for Supercapacitor Electrodes
Xianbin Liu
; College of Materials Science and Engineering, Fuzhou University, Fuzhou, China
Na Wen
; College of Materials Science and Engineering, Fuzhou University, Fuzhou, China
Xiaoli Wang
; College of Materials Science and Engineering, Fuzhou University, Fuzhou, China
Yuying Zheng
; College of Materials Science and Engineering, Fuzhou University, Fuzhou, China
Sažetak
To maximize the utilization of its single-atom thin nature, a facile scheme to fabricate graphene multilayer films via a layer-by-layer self-assembled process was presented. The structure of multilayer films was constructed by covalently bonding graphene oxide (GO) using p-phenylenediamine (PPD) as a covalent cross-linking agent. The assembly process was confirmed to be repeatable and the structure was stable. With the π-π conjugated structure and a large number of spaces in the framework, the graphene multilayer films exhibited excellent electrochemical performance. The uniform ultrathin electrode exhibited a capacitance of 41.71 μF/cm2 at a discharge current of 0.1 μA/cm2, and displayed excellent stability of 88.9 % after 1000 charge-discharge cycles.
Ključne riječi
layer-by-layer self-assembly; covalent bond; graphene; carbon materials; energy storage and conversion
Hrčak ID:
142553
URI
Datum izdavanja:
1.1.2015.
Posjeta: 1.012 *