Enabling Efficient Oxygen Reduction Reaction with Pt Single Atoms on Carbide: A Phosphorus-Doped Mo 2 C Interface Strategy
Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Developing efficient and cost-effective oxygen reduction reaction (ORR) catalysts is a critical process in electrochemical energy conversion technologies. Here, we report a new heterostructured electrocatalyst composed of phosphorus-doped Mo 2 C coupled with atomically dispersed Pt sites (Pt/P-Mo 2 C). This is realized through a confined polymerization approach using heteropolyacid–pyrrole complexes and subsequent covalent anchoring. Phosphorus doping plays a crucial role in enhancing the interfacial electron density and enabling strong electronic interactions with Pt atoms. The results showed that the interfacial electronic structure of Pt is significantly modulated, with a downshifted d-band center that optimizes the adsorption/desorption energetics of ORR intermediates. As a result, Pt/P-Mo 2 C demonstrates outstanding ORR activity in alkaline media, achieving a half-wave potential ( E 1/2 ) of 0.91 V along with excellent stability. This work presents a generic strategy for integrating single-atom noble metals with carbide supports and highlights the role of interfacial electron engineering in the design of next-generation ORR electrocatalysts.
Source: Nano Letters
Authors: Changwei Shi, Xingmao Jiang, Xueqiang Qi, Congcong Xing, Xiaolei Fan, Zhuo Chen, Xiang Wang, Andreu Cabot
Institutions: Wuhan Institute of Technology, Chongqing University, Institut de Recerca en Energia de Catalunya, Zhejiang University, University of Manchester, Wuhan University of Technology, State Key Laboratory of Advanced Technology For Materials Synthesis and Processing, Institució Catalana de Recerca i Estudis Avançats
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
OpenAlex ID: W4415681994