Processing of strong and highly conductive carbon foams as electrode
Processing of strong and highly conductive carbon foams as electrode
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DOI：
10.1016/j.carbon.2011.05.022
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发表时间：
2011-10-01
期刊：
影响因子：
10.9
通讯作者：
Guo, Zheng-Xiao
中科院分区：
文献类型：
--
作者：
Amini, Negar;Aguey-Zinsou, Kondo-Francois;Guo, Zheng-Xiao
多孔炭的制备是通过将两部分聚合物前体与预负载的炭粉末（石墨或无定形）一起发泡，然后树脂浸渍和碳化以控制所得泡沫的孔隙率和机械强度。镍催化石墨化可以提高泡沫的导电性。不同浓度的镍对无定形碳泡沫的石墨化程度不同。与无定形对应物相比，石墨碳的存在将电导率提高了50倍。电化学研究表明，石墨化的无定形结构的碳电极的比电化学表面积和电子转移速率增加。(C)2011爱思唯尔有限公司保留所有权利。
Porous carbons were processed by the foaming of two-part polymer precursors with pre-loaded carbon powder (graphitic or amorphous), and then resin impregnation and carbonization to control both porosity and mechanical strength of the resulting foam. Electrical conductivity of the foams was improved by nickel-catalyzed graphitization. Different levels of graphitization were obtained for varied concentrations of nickel to the amorphous carbon foams. The presence of graphitic carbon improves the electrical conductivity by a factor of 50, compared to the amorphous counterparts. Electrochemical studies showed that graphitization of the amorphous structures increased the specific electrochemical surface area and electron transfer rate of the carbon electrodes. (C) 2011 Elsevier Ltd. All rights reserved.