石墨烯
熔盐
催化作用
铂金
氧还原
材料科学
纳米技术
金属
化学工程
可扩展性
氧还原反应
化学
冶金
电化学
计算机科学
电极
有机化学
工程类
物理化学
数据库
作者
Bao Yu Xia,Shahid Zaman,Yaqiong Su,Chung‐Li Dong,Ruijuan Qi,Lei Huang,Yanyang Qin,Yu‐Cheng Huang,Fumin Li,Bo You,Wei Guo,Qing Li,Shi‐Jin Ding
标识
DOI:10.1002/ange.202115835
摘要
Abstract 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 mg Pt −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.
科研通智能强力驱动
Strongly Powered by AbleSci AI