Investigation of the influence of amino trimethylene phosphonic acid on oxygen reduction reaction on platinum catalyst

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2024-11-30 DOI:10.1016/j.cej.2024.158164

Wenteng Wu, Qingxin Wang, Wen Li, Wen Liu, Di Wang, Jiashuo Fu, Jin Zhang, Yunqi Li, Haining Wang, Shanfu Lu, Yan Xiang

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Abstract

Recently, organic phosphonic acids (OPAs)/PA were developed as an excellent dual-proton conductor in high-temperature polymer electrolyte membrane fuel cells to solve the leaching of PA. However, the effect of OPAs on the catalytic property of Pt is still unclear. In this work, we investigate the influence of amino trimethylene phosphonic acid (ATMP) on oxygen reduction reaction (ORR) on Pt catalyst through a combined experimental and simulation study. It is found ATMP caused a 15 mV negative shift in half-wave potential which is only half of PA and a 60 % increase in mass activity compared to PA, indicating its weaker poisoning effect. The reason is that the N-containing structures of ATMP molecules could benefit the catalytic property of Pt for its regulation to the electronic structure of Pt. Meanwhile, Pt shows higher durability in ATMP than PA due to the weaker adsorption of ATMP on Pt surface. Therefore, the role of ATMP should be utilized for designing ORR catalyst in high-temperature polymer electrolyte membrane fuel cells.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.