电催化剂
简单(哲学)
纳米颗粒
纳米技术
计算机科学
材料科学
化学
电极
物理化学
哲学
认识论
电化学
作者
Yingying Zhao,Ming Wei,Zixiong Sun,Wei Ma
标识
DOI:10.1021/acs.jpcc.4c00212
摘要
Catalyst supports can efficiently regulate the activity and stability of catalysts. However, the development of an efficient catalyst support is currently based on trial and error and is very time-consuming. Herein, we propose a rapid electrochemical screening method for heteroatom-doped carbon supports to enhance the oxygen reduction reaction (ORR) activity of PtNPs at the single nanoparticle (NP) level, without an inhomogeneous averaging contribution. When individual PtNPs collide at a functionalized carbon nanocone electrode with different heteroatom (X) doping, a catalytic structure of Pt–X–C is constructed, enabling the rapid screening of potential heteroatom-doped carbon supports. Our results demonstrate that the PtNPs on a nitrogen and phosphorus dual-doped carbon support exhibit excellent ORR performance. This work provides a simple and efficient method for screening highly efficient electrocatalyst supports at the single NP level.
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