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首页> 外文期刊>RSC Advances >In situ synthesis of graphene/carbon nanotube modified ordered mesoporous carbon as protective film of stainless steel bipolar plates for proton exchange membrane fuel cells
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In situ synthesis of graphene/carbon nanotube modified ordered mesoporous carbon as protective film of stainless steel bipolar plates for proton exchange membrane fuel cells

机译：石墨烯/碳纳米管的改性原位介孔碳原位合成质子交换膜燃料电池用不锈钢双极板保护膜

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摘要

Either graphene or carbon nanotube (CNT) is in situ introduced in ordered mesoporous carbon film via a spin-coating method, followed by evaporation-induced self-assembly of precursors and post calcinations. Graphene-modified and CNT-modified ordered mesoporous carbon films show improved electronic conductivity of 0.35 and 0.41 S m(-1), and contact angles of 90 degrees and 96 degrees, respectively, which are significantly higher than the values of 0.0043 S m(-1) and 71 degrees measured for the non-doped carbon film, suggesting enhanced graphitization degree and hydrophobic properties. Two different hybrid carbon films deposited on 304 stainless steels as bipolar plates for proton exchange membrane fuel cells reveal remarkable corrosion resistance, which show very low corrosion current densities of 0.140 mu A cm(-2) and 0.008 mu A cm(-2), in comparison with the 0.464 mu A cm(-2) measured on the bare 304 stainless steel. Such hybrid carbon films with preserved ordered mesporous structure and satisfactory electrochemical performance on 304 stainless steels can be considered as promising candidates for bipolar plate materials in proton exchange membrane fuel cells.
机译：通过旋涂法将石墨烯或碳纳米管（CNT）原位引入有序介孔碳膜中，然后进行蒸发诱导的前体自组装和后煅烧。石墨烯改性和CNT改性的有序介孔碳膜分别显示出0.35和0.41 S m（-1）的改进的电子电导率，以及90度和96度的接触角，大大高于0.0043 S m（ -1）和71度测量的非掺杂碳膜，表明增强了石墨化度和疏水性。两种不同的杂化碳膜作为质子交换膜燃料电池的双极板沉积在304不锈钢上，显示出显着的耐腐蚀性，显示出非常低的腐蚀电流密度，分别为0.140μA cm（-2）和0.008μA cm（-2），与裸304不锈钢上测得的0.464μA cm（-2）相比。这种具有保留的有序介孔结构和令人满意的在304不锈钢上的电化学性能的杂化碳膜可以被认为是质子交换膜燃料电池中双极板材料的有前途的候选材料。

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