PANI/煤基石墨烯宏观体复合材料的制备及其电化学性能

以太西无烟煤为原料，采用催化热处理、改良Hummers氧化等方法，制备煤基氧化石墨烯（CGO），进而以CGO和聚苯胺（PANI）为前驱体，采用水热自组装法，制备得到PANI/石墨烯宏观体复合材料（3D-PCG）。采用FT-IR、XRD、Raman、SEM和TEM等技术，研究了材料的组成、结构和形貌，考察了3D-PCG的电化学性能。结果表明，PANI以纳米棒状形态均匀镶嵌在煤基石墨烯宏观体（3D-CG）的网状结构中；当PANI与CGO质量比为1：2时，3D-PCG的电化学性能优于PANI和3D-CG，其比电容可达663 F·g^-1。

Fabrication and electrochemical capacitive performance of PANI/coal-based three-dimensional graphene

Graphene-based 3D functional materials hold promise as electrode materials for high performance supercapacitors due to their unique porous network structure, large specific surface area and excellent electrical and thermal properties. The coal-based graphene oxide (CGO) was prepared from Taixi anthracite by catalytic heat treatment and modified Hummers method. With polyaniline (PANI) and CGO as the starting materials, 3D PANI/coal-based graphene composites (3D-PCG) were further prepared by the hydrothermal method. The morphology and structure of the as-made materials were examined by the techniques including FT-IR, XRD, Raman, SEM, and TEM, with a focus on the interaction of polyaniline with the graphene. The electrochemical performance of 3D-PCG as electrode materials for supercapacitors was evaluated by electrochemical test methods. The results show that rod-like PANI is uniformly embedded into the network structure of 3D coal-based graphene (3D-CG), yielding 3D-PCG that has the highest specific capacitance in comparison with PANI and 3D-CG, and a specific capacitance of 663 F·g^-1 can be delivered in the case of 3D-PCG made at 1:2 mass ratio of PANI and CGO.