文献类型：期刊文献

英文题名：PtAuSn Nanorod Catalysts with a Beneficial Core/Shell Structure for Oxygen Reduction Electrocatalysis

作者：Huang, Tzu-Hsi[1,2];Lin, Shuan[3];Lee, Sheng-Wei[3];Lin, Cheng-An[3];Dai, Sheng[1,2];Jia, Yanyan[1,2];Wang, Kuan-Wen[3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Inst Fine Chem, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan

年份：2021

卷号：4

期号：4

起止页码：3067

外文期刊名：ACS APPLIED ENERGY MATERIALS

收录：;EI(收录号：20211510199580);WOS:【SCI-EXPANDED(收录号:WOS:000644737800011)】；

基金：This work was supported by the Ministry of Science and Technology, R.O.C. (MOST 107-2628-E-008-003-MY3, 108-3116-F-008-008, and 109-2622-E-008-029). S.D. acknowledges the support by Shanghai Rising-star Program (20QA1402400). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：oxygen reduction reaction; core/shell structure; decoration; nanorod; mass activity; stability; PtAu; PtSn

摘要：Core/shell nanocatalysts have been regarded as potential catalysts for oxygen reduction reaction (ORR) occurring at the cathode of proton exchange membrane fuel cells. Notably, core/shell segregated nanocatalysts exhibit improved activity and stability compared with alloyed nanocatalysts because of the high noble metal utilization and electronic modification effect. Herein, we report that the ORR activity and stability of PtAuSn core/shell ternary nanorod catalysts are fine-structure-dependent in which AuSnOx-decorated Pt catalysts can reach a high ORR mass activity of 1069 mA/mg(P)(t) at 0.85 V (IR-free). Moreover, the Au@SnOx-decorated Pt catalysts with a surface SnOx protective layer show high ORR stability after an accelerated durability test of 10,000 cycles, which yet maintain a high mass activity (251 mA/mg(Pt)). This research highlights that controlling the fine structure of catalysts can effectively promote the activity and durability of the electrocatalysts for fuel cells.