Layer-by-Layer Self-Assembled Graphene Multilayer Films via Covalent Bonds for Supercapacitor Electrodes

作者：Liu, Xianbin; Wen, Na; Wang, Xiaoli; Zheng, Yuying^*

来源：Nanomaterials and Nanotechnology, 2015, 5: 14.

DOI：10.5772/60596

• layer-by-layer self-assembly
• covalent bond
• graphene
• carbon materials
• energy storage and conversion

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 pi-pi 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 mu F/cm(2) at a discharge current of 0.1 mu A/cm(2), and displayed excellent stability of 88.9 % after 1000 charge-discharge cycles.

• 出版日期2015-5-11
• 单位福州大学