Fuel Cell Measurements with Cathode Catalysts of Sputtered Pt3Y Thin Films,ChemSusChem

当前位置： X-MOL 学术 › ChemSusChem › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Fuel Cell Measurements with Cathode Catalysts of Sputtered Pt3Y Thin Films
ChemSusChem ( IF 7.5 ) Pub Date : 2018-04-06 , DOI: 10.1002/cssc.201800023
Niklas Lindahl ₁ , Björn Eriksson ₂ , Henrik Grönbeck ₁ , Rakel Wreland Lindström ₂ , Göran Lindbergh ₂ , Carina Lagergren ₂ , Björn Wickman ₁

Affiliation

Fuel cells are foreseen to have an important role in sustainable energy systems, provided that catalysts with higher activity and stability are developed. In this study, highly active sputtered thin films of platinum alloyed with yttrium (Pt₃Y) are deposited on commercial gas diffusion layers and their performance in a proton exchange membrane fuel cell is measured. After acid pretreatment, the alloy is found to have up to 2.5 times higher specific activity than pure platinum. The performance of Pt₃Y is much higher than that of pure Pt, even if all of the alloying element was leached out from parts of the thin metal film on the porous support. This indicates that an even higher performance is expected if the structure of the Pt₃Y catalyst or the support could be further improved. The results show that platinum alloyed with rare earth metals can be used as highly active cathode catalyst materials, and significantly reduce the amount of platinum needed, in real fuel cells.

中文翻译：

溅射Pt3Y薄膜阴极催化剂的燃料电池测量

如果开发出具有更高活性和稳定性的催化剂，则可预见燃料电池将在可持续能源系统中发挥重要作用。在这项研究中，与钇（Pt ₃ Y）合金化的高活性溅射铂薄膜沉积在商用气体扩散层上，并测量了它们在质子交换膜燃料电池中的性能。经过酸预处理后，发现该合金的比活性比纯铂高多达2.5倍。即使所有合金元素从多孔载体上的部分金属薄膜中浸出，Pt ₃ Y的性能也比纯Pt的性能高得多。这表明如果Pt ₃的结构具有更高的性能Y催化剂或载体可以进一步改善。结果表明，与稀土金属合金化的铂可以用作高活性阴极催化剂材料，并在实际燃料电池中显着减少所需的铂量。

更新日期：2018-04-06

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11