文献类型：期刊文献

英文题名：Pt3(CoNi) Ternary Intermetallic Nanoparticles Immobilized on N-Doped Carbon Derived from Zeolitic Imidazolate Frameworks for Oxygen Reduction

作者：Song, Shiqi[1];Hu, Junhua[1];Wang, Chupeng[1];Luo, Mingsheng[1];Wang, Xiaoxia[2];Zhai, Fengxia[3];Zheng, Jianyong[4]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Sushui Energy Technol Shanghai Co Ltd, Shanghai 200444, Peoples R China;[4]Shanghai Univ, Inst Artificial Intelligence, Shanghai 200444, Peoples R China

年份：2024

卷号：17

期号：19

外文期刊名：MATERIALS

收录：;EI(收录号：20244217220573);WOS:【SCI-EXPANDED(收录号:WOS:001334106100001)】；

基金：This research was funded by Xizang Autonomous Region Science and Technology Plan Project: XZ202401ZY0067.

语种：英文

外文关键词：Pt-3(CoNi) intermetallic; proton exchange membrane fuel cell; oxygen reduction reaction; electrocatalysis; zeolitic imidazolate frameworks

摘要：Pt-based intermetallic compound (IMC) nanoparticles have been considered the most promising catalysts for oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFC). Herein, we propose a strategy for producing ordered Pt-3(CoNi) ternary IMC nanoparticles supported on N-doped carbon materials. Particularly, the Co and Ni are originally embedded into ZIF-derived carbon, which diffuse into Pt nanocrystals to form Pt-3(CoNi) nanoparticles. Moreover, a thin layer of carbon develops outside of Pt-3(CoNi) nanoparticles during the cooling process, which contributes to stabilizing the Pt-3(CoNi) on carbon supports. The optimal Pt-3(CoNi) nanoparticle catalyst has achieved significantly enhanced activity and stability, exhibiting a half-wave potential of 0.885 V vs reversible hydrogen electrode (RHE) and losing only 16 mV after 10,000 potential cycles between 0.6 and 1.0 V. Unlike the direct-use commercial carbon (VXC-72) for depositing Pt, we utilized ZIF-derived carbon containing dispersed Co and Ni nanocluster or nanoparticles to prepare ordered Pt3(CoNi) intermetallic catalysts.