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应用两亲软化学法,将纳米铂有效地分散在多层碳纳米管阵列(ACNT)表面,使其得以修饰,形成了高活性的阴极催化材料,用于制备结构膜阴极组合件(MEA).对MEA进行的形态学和电化学测试,证明可以大大改善质子交换膜燃料电池(PEMFC)的纳米结构和电化学性能.该种阴极催化材料除了表面均匀及高活性之外,还表现出比目前设计出的PEMFC高出约6倍的输出功率,在一定电位下的氧气中可以达到900 mW·cm-2,而贵金属铂搭载量则显著降低至0.14~0.19 mg·cm-2.实验结果表明,由于碳纳米管阵列的厌水性保证了电极性能的稳定性,从而为提高PEMFC电池的长期稳定性及降低成本提供了一条新的解决思路,具有一定的学术研究价值和经济应用价值.“,”A robust cathode catalyst composed of multiwalled carbon nanotube(ACNT) arrays decorated with platinum(Pt) were fabricated.This cathode was then used for a structured membrane electrode assembly(MEA) to evaluate the proton exchange membrane fuel cells(PEMFCs) performance.The MEA was evaluated both morphologically and electrochemically.Aside from being uniform and robust,the catalyst showed six-fold higher power density(approximately 900 mW.cm-2 in O 2 at fixed potential) compared to existing design for PEMFC devices.Significantly,Pt loading has been decreased to 0.14~0.19 mg.cm2.