Optimized oxygen reduction activity by tuning shell component in Pd@Pt-based core-shell electrocatalysts

Yafeng Zhang; Kai Ye; Qingqing Gu; Qike Jiang; Juan Qin; Deying Leng; Qianru Liu; Bing Yang; Feng Yin

doi:10.1016/j.jcis.2021.06.136

Optimized oxygen reduction activity by tuning shell component in Pd@Pt-based core-shell electrocatalysts

J Colloid Interface Sci. 2021 Dec 15:604:301-309. doi: 10.1016/j.jcis.2021.06.136. Epub 2021 Jun 26.

Authors

Yafeng Zhang¹, Kai Ye¹, Qingqing Gu², Qike Jiang³, Juan Qin¹, Deying Leng¹, Qianru Liu¹, Bing Yang⁴, Feng Yin⁵

Affiliations

¹ School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China.
² CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, China; Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, China.
³ Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, China.
⁴ CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, China; Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, China. Electronic address: byang@dicp.ac.cn.
⁵ School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China; Key Laboratory of Syngas Conversion of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China. Electronic address: fengyin@snnu.edu.cn.

PMID: 34265687
DOI: 10.1016/j.jcis.2021.06.136

Abstract

Combining the interests of core-shell and alloy structures, herein we report the versatile co-reduction synthesis of Pd@Pt-based core-shell nanoparticles. The current strategy can effectively tune the component of shell, from isolated Pt to binary PtNi alloy, then ternary PtNi-M (M = Fe or Cu) alloy. Further, significant improvement of oxygen reduction reaction (ORR) activity is optimized by the change in shell component. Compared to Pd@Pt/C, Pd@PtNi/C catalyst presents the ORR-helpful mass activity of 1.29 A mg^-1_Pt. By incorporating a third metal (M) into shell layer, the optimized mass activity of Pd@PtNiFe/C and Pd@PtNiCu/C catalysts is 1.1 times and 1.4 times higher than that of Pd@PtNi/C, respectively. Meanwhile, the lower activity decays of 11.0% for Pd@PtNiFe/C and 10.6% for Pd@PtNiCu/C are obtained compared with that of Pd@PtNi/C (12.4%) after 5,000 cycles, respectively.

Keywords: Core-shell; Electrocatalyst; Oxygen reduction reaction; PdPtNi; Versatile co-reduction synthesis.