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通过纳米胶囊法制备的铂钴合金纳米颗粒在碱性介质中表现出高氧还原反应活性。

Pt/Co Alloy Nanoparticles Prepared by Nanocapsule Method Exhibit a High Oxygen Reduction Reaction Activity in the Alkaline Media.

作者信息

Miyatake Kenji, Shimizu Yuma

机构信息

Clean Energy Research Center and Fuel Cell Nanomaterials Center, University of Yamanashi, 4 Takeda, Kofu 400-8510, Japan.

出版信息

ACS Omega. 2017 May 16;2(5):2085-2089. doi: 10.1021/acsomega.7b00415. eCollection 2017 May 31.

DOI:10.1021/acsomega.7b00415
PMID:31457562
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6641187/
Abstract

Oxygen reduction reaction (ORR) catalysts are one of the main topics for fuel cells and metal/air batteries. We found that the platinum-cobalt alloy nanoparticles prepared by our original nanocapsule method exhibited a high ORR catalytic activity in alkaline solution, compared with that of the existing alloy nanoparticles prepared by different methods. The effect of alloy composition on the ORR activity was investigated to find the optimum composition (approximately 40 atom %). We also found that the enhancement of the catalytic activity in alkaline solution appeared in a very narrow range of Co content compared with that in acidic solution.

摘要

氧还原反应（ORR）催化剂是燃料电池和金属/空气电池的主要研究课题之一。我们发现，通过我们独创的纳米胶囊方法制备的铂钴合金纳米颗粒，与通过不同方法制备的现有合金纳米颗粒相比，在碱性溶液中表现出较高的ORR催化活性。研究了合金组成对ORR活性的影响，以找到最佳组成（约40原子%）。我们还发现，与酸性溶液相比，碱性溶液中催化活性的增强出现在非常窄的钴含量范围内。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/59d73f335190/ao-2017-00415m_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/8cea630a5259/ao-2017-00415m_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/ad6106d46c10/ao-2017-00415m_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/676f82e93813/ao-2017-00415m_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/29e596d0be27/ao-2017-00415m_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/59d73f335190/ao-2017-00415m_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/8cea630a5259/ao-2017-00415m_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/ad6106d46c10/ao-2017-00415m_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/676f82e93813/ao-2017-00415m_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/29e596d0be27/ao-2017-00415m_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d46/6641187/59d73f335190/ao-2017-00415m_0005.jpg

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Sci Rep. 2017 Feb 2;7:41826. doi: 10.1038/srep41826.
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Free Electrons to Molecular Bonds and Back: Closing the Energetic Oxygen Reduction (ORR)-Oxygen Evolution (OER) Cycle Using Core-Shell Nanoelectrocatalysts.自由电子与分子键的相互转化：利用核壳纳米电催化剂闭合能量转换的氧还原（ORR）-氧析出（OER）循环。
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Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction.
泡沫锌渗流性能的有限元分析
ACS Omega. 2018 Sep 12;3(9):11018-11025. doi: 10.1021/acsomega.8b01580. eCollection 2018 Sep 30.
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Science. 2016 Apr 1;352(6281):73-6. doi: 10.1126/science.aad8892.
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Composition-controlled synthesis of carbon-supported Pt-Co alloy nanoparticles and the origin of their ORR activity enhancement.碳负载铂钴合金纳米粒子的组成控制合成及其氧还原反应活性增强的起源
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5
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