Scalable Molten Salt Synthesis of Platinum Alloys Planted in Metal–Nitrogen–Graphene for Efficient Oxygen Reduction
发布时间：2022-01-01
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- 论文类型：
- Research Article
- 第一作者：
- Zaman,Shahid
- 通讯作者：
- Xia,Yu,Bao,
- 合写作者：
- Ding, Shujiang, Qing,Guo,Wei,You,Bo,Li, Fu-Min, Yu-Cheng,Qin, Yanyang,Huang, Lei,Qi, Ruijuan,Dong,Chung-Li, Prof.,Su,Ya-Qiong
- 发表刊物：
- Angewandte Chemie International Edition
- 所属单位：
- 华中科技大学
- 刊物所在地：
- 德国
- 文献类型：
- Article
- 卷号：
- 134
- 期号：
- 6
- 页面范围：
- e202115835
- ISSN号：
- 1521-3757
- 关键字：
- Molten-salt Synthesis; Metal-Nitrogen-Graphene; Electrocatalyst; Oxygen Reduction; Platinum Alloy
- DOI码：
- 10.1021/acscatal.2c01052
- 发表时间：
- 2021-12-10
- 影响因子：
- 16.1
- 摘要：
- Fuel cells are considered as a promising alternative to the existing traditional energy systems towards a sustainable future. Nevertheless, the synthesis of efficient and robust platinum (Pt) based catalysts remains a challenge for practical applications. In this work, we present a simple and scalable molten-salt synthesis method for producing a low-platinum (Pt) nanoalloy implanted in metal–nitrogen–graphene. The as-prepared low-Pt alloyed graphene exhibits a high oxygen reduction activity of 1.29 A mgPt−1 and excellent durability over 30 000 potential cycles. The catalyst nanoarchitecture of graphene encased Pt nanoalloy provides a robust capability against nanoparticle migration and corrosion due to a strong metal–support interaction. Similarly, advanced characterization and theoretical calculations show that the multiple active sites in platinum alloyed graphene synergistically account for the improved oxygen reduction. This work not only provides an efficient and robust low-Pt catalyst but also a facile design idea and scalable preparation technique for integrated catalysts to achieve more profound applications in fuel cells and beyond.