Authors
Anran Song, Yi Li, Jiakang Tian, Zhen Fang, Zhenpeng Yao, Wencong Zhang, Jianbo Wu
Published in
Science advances. Volume 12. Issue 36. Pages eaef5266. Sep 04, 2026. Epub Sep 04, 2026.
Abstract
Pt-Ni alloys exhibit outstanding oxygen reduction reaction (ORR) activity, yet achieving structural ordering to enhance stability remains a persistent challenge. Here, we propose a database-guided screening strategy to identify promoter elements (X) that facilitate ordering. By screening the critical disorder-to-order transition temperature ([Formula: see text]), solid solubility ([Formula: see text]), and diffusion pre-exponential factor ([Formula: see text]) of candidate elements from material databases, six sets of L10-Pt(NiX) nanoparticles were synthesized. The developed L10-PtNiFe catalysts demonstrated a high mass activity (MA) of 4.38 A mgPt-1, retaining 82.1% after 50,000 cycles of accelerated durability testing (ADT) in half-cells, and retaining 79% of its initial MA of 1.1 A mgPt-1 after 30,000 cycles in membrane electrode assembly (MEA). Theoretical calculations reveal that X incorporation broadens the annealing temperature ([Formula: see text]) window by forming Pt(NiX) with higher [Formula: see text] and lowering the kinetic threshold temperature ([Formula: see text]) via enhanced atom mobility. This work establishes a database-guided framework that enables phase transitions previously difficult to access by creating an effective annealing window through coordinated thermodynamic-kinetic regulation, thereby facilitating the formation of ordered PtNi-based intermetallic structures toward durable electrocatalysts.
PMID:
42696567
Bibliographic data and abstract were imported from PubMed on 05 Sep 2026.
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