| 高活性碳纳米管阴极组合件的研制(英文) |
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| 引用本文： | 王智民,巴塞·赛义德,刘静波.高活性碳纳米管阴极组合件的研制(英文)[J].黑龙江大学自然科学学报,2012(4):489-497. |
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| 作者姓名： | 王智民 巴塞·赛义德 刘静波 |
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| 作者单位： | 黑龙江大学化学化工与材料学院;德克萨斯农业和机械大学金斯维尔分校化学系 |
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| 基金项目： | The National Science Foundation(NSF)Centers of Research Excellence in Science and Technology(NSF CREST,HRD-0734850);MRI acquisition(CBET-0821370)at the Texas A&M University-Kingsville |
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| 摘 要： | 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。
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| 关 键 词： | 碳纳米管阵列 纳米铂 质子交换膜燃料电池 纳米结构表征 电化学性能 |
Building robust cathode catalyst to improve performance of proton exchange membrane fuel cells |
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| WANG Zhi-min,BASHIR Sajid,LIU Jing-bo.Building robust cathode catalyst to improve performance of proton exchange membrane fuel cells[J].Journal of Natural Science of Heilongjiang University,2012(4):489-497. |
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| Authors: | WANG Zhi-min BASHIR Sajid LIU Jing-bo |
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| Institution: | 1.School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China;2.Department of Chemistry,Texas A&M University-Kingsville,Kingsville 161700,USA) |
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| Abstract: | 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. |
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| Keywords: | aligned carbon nanotubes platinum nanoparticles proton exchange membrane fuel cells nanostructural characterization electrochemical performance |
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