| 三元合金氧还原电催化剂 |
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| 引用本文： | 罗瑾,杨乐夫,陈秉辉,钟传建. 三元合金氧还原电催化剂[J]. 电化学, 2012, 18(6): 496-507. DOI: 10.61558/2993-074X.2618 |
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| 作者姓名： | 罗瑾 杨乐夫 陈秉辉 钟传建 |
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| 作者单位： | 1. 纽约州立大学宾汉姆顿分校化学系，美国 纽约13902；2. 厦门大学化学化工学院， 福建 厦门361005 |
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| 基金项目： | supported by National Science Foundation(CBET-0709113 and CHE-0848701),Department of Energy,Honda,and UTC Power |
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| 摘 要： | 质子交换膜燃料电池作为重要的电化学能源转换装置，在提高能量转换效率、减少环境污染等方面具有诱人的前景.然而，阴极氧还原过电位较大、活性较低、稳定性差，且铂基催化剂昂贵，使该燃料电池难以商业化.纳米结构电催化剂的发展有望解决此难题。对纳米合金电催化剂其组分和结构的设计是开发高活性、高稳定性和低成本的燃料电池电催化剂的重要因素.本文综述了近期由分子设计和热化学控制处理法制备的三元纳米合金电催化剂对燃料电池氧还原反应催化性能的最新进展.该方法可控制纳米合金的尺寸、组成以及二元和三元纳米催化剂的合金化程度.以高活性的三元纳米合金催化剂PtNiCo/C为例，综述了在设计燃料电池电催化剂时结构和组成的纳米级调优的重要性.PtNiCo/C电催化剂的质量比活性远高于其二元合金催化剂和Pt/C商业电催化剂.三元电催化剂的催化活性可通过控制其组成来调节.文章还讨论了三元纳米合金催化剂的结构及其协同效应对增强其电催化性能的影响.
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| 关 键 词： | 三元纳米合金 纳米催化剂 电催化活性 氧还原反应 燃料电池 |
| 收稿时间： | 2012-07-13 |
Ternary Alloy Electrocatalysts for Oxygen Reduction Reaction |
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| Jin Luo,Lefu Yang,Binghui Chen,Chuanjian Zhong. Ternary Alloy Electrocatalysts for Oxygen Reduction Reaction[J]. Electrochemistry, 2012, 18(6): 496-507. DOI: 10.61558/2993-074X.2618 |
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| Authors: | Jin Luo Lefu Yang Binghui Chen Chuanjian Zhong |
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| Affiliation: | 1(1.Department of Chemistry,State University of New York at Binghamton,Binghamton,New York 13902,USA;2.College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China) |
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| Abstract: | Proton exchange membrane fuel cell represents an important electrochemical energy conversion device with many attractive features in terms of efficiency of energy conversion and minimization of environmental pollution. However, the large overpotential for oxygen reduction reaction at the cathode and the low activity, poor durability and high cost of platinum-based catalysts in the fuel cells constitute a focal point of major barriers to the commercialization of fuel cells. The development of nanostructured catalysts shows promises to addresses some of the challenging problems. The ability to engineer the composition and nanostructure of nanoalloy catalysts is important for developing active, robust and low-cost catalysts for fuel cell applications. This article highlights some of the recent insights into the catalytic properties of ternary nanoalloy catalysts prepared by molecularly-engineered synthesis and thermochemically-controlled processing, focusing on oxygen reduction reaction in fuel cells. This approach has demonstrated the abilities to control size, composition, and nanoscale alloying of binary and ternary nanoalloys. A highly-active ternary nanoalloy catalyst consisting of platinum, nickel and cobalt that is supported on carbon (PtNiCo/C) will be discussed as an example, highlighting the importance of nanoscale tuning of structures and composition for the design of fuel cell catalysts. The mass activity of selected PtNiCo/C catalysts has been shown much higher electrocatalytic activity than those observed for their binary counterparts and commercial Pt/C catalysts. Selected examples will also be shown that the catalytic activity can be tuned by the ternary composition. The structural and synergistic properties of the ternary nanoalloy catalysts for the enhancement of the electrocatalytic activity will also be discussed. |
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| Keywords: | ternary nanoalloys nanocatalysts electrocatalytic activity oxygen reduction reaction fuel cells |
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