Active and stable carbon nanotube/nanoparticle composite electrocatalyst for oxygen reduction.
Active and stable carbon nanotube/nanoparticle composite electrocatalyst for oxygen reduction.
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DOI：
10.1038/ncomms2944
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发表时间：
2013
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
氮掺杂的碳纳米管阵列、Co 3 O 4/氮掺杂的石墨烯杂化物和碳纳米管-石墨烯复合物等纳米结构碳基材料在碱性介质中表现出可观的氧还原反应活性。虽然这些材料的性能肯定有前途，但还不能保证在利用碱性电解质的能量转换/储存装置中实施，例如碱性燃料电池、金属-空气电池和某些电解槽。在这里，我们展示了一种新型的氮掺杂的碳纳米管/纳米颗粒复合氧还原反应电催化剂获得从乙酸铁作为铁的前体和从氰胺作为氮和碳纳米管的前体，在一个简单的，可扩展的和一步的方法。该复合物在碱性介质中具有任何非贵金属催化剂中最高的氧还原反应活性。当以足够高的负载量使用时，该催化剂的性能也优于最具活性的铂基催化剂。 廉价、高效的氧还原反应催化剂对于燃料电池和锂空气电池的发展至关重要。在这里，作者报告了氮掺杂碳纳米管/纳米颗粒混合材料的可扩展合成，该材料的性能优于几种铂基催化剂。
Nanostructured carbon-based materials, such as nitrogen-doped carbon nanotube arrays, Co3O4/nitrogen-doped graphene hybrids and carbon nanotube–graphene complexes have shown respectable oxygen reduction reaction activity in alkaline media. Although certainly promising, the performance of these materials does not yet warrant implementation in the energy conversion/storage devices utilizing basic electrolytes, for example, alkaline fuel cells, metal-air batteries and certain electrolysers. Here we demonstrate a new type of nitrogen-doped carbon nanotube/nanoparticle composite oxygen reduction reaction electrocatalyst obtained from iron acetate as an iron precursor and from cyanamide as a nitrogen and carbon nanotube precursor in a simple, scalable and single-step method. The composite has the highest oxygen reduction reaction activity in alkaline media of any non-precious metal catalysts. When used at a sufficiently high loading, this catalyst also outperforms the most active platinum-based catalysts. Cheap, efficient oxygen reduction reaction catalysts are vital for the development of fuel cells and lithium-air batteries. Here, the authors report the scalable synthesis of a nitrogen-doped carbon nanotube/nanoparticle hybrid material that outperforms several platinum-based catalysts.
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影响因子：
5.4
作者：
Meng, Hui;Jaouen, Frederic;Dodelet, Jean-Pol
通讯作者：
Dodelet, Jean-Pol
影响因子：
6.6
作者：
MORCOS, I;YEAGER, E
通讯作者：
YEAGER, E
影响因子：
21.8
作者：
Greeley, J.;Stephens, I. E. L.;Norskov, J. K.
通讯作者：
Norskov, J. K.
影响因子：
3.3
作者：
Blizanac, BB;Ross, PN;Markovic, NM
通讯作者：
Markovic, NM
影响因子：
4.9
作者：
Shanmugam, Sangaraju;Osaka, Tetsuya
通讯作者：
Osaka, Tetsuya