Heterostructure engineering and ultralow Pt-loaded multicomponent nanocage for efficient electrocatalytic oxygen evolution

Jiongting Yin; Cheng Wang; Kewang Zhang; Dongmei Liu; Zhengying Wu; Shinichi Hata; Rui Yu; Yukihide Shiraishi; Yukou Du

doi:10.1016/j.jcis.2023.02.053

Heterostructure engineering and ultralow Pt-loaded multicomponent nanocage for efficient electrocatalytic oxygen evolution

J Colloid Interface Sci. 2023 Jun:639:214-222. doi: 10.1016/j.jcis.2023.02.053. Epub 2023 Feb 14.

Authors

Jiongting Yin¹, Cheng Wang¹, Kewang Zhang¹, Dongmei Liu¹, Zhengying Wu², Shinichi Hata³, Rui Yu¹, Yukihide Shiraishi³, Yukou Du⁴

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
² Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China. Electronic address: zywu@mail.usts.edu.cn.
³ Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, Sanyo-Onoda, Yamaguchi 756-0884, Japan.
⁴ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China; School of Optical and Electronic Information, Suzhou City University, Suzhou 215104, China. Electronic address: duyk@suda.edu.cn.

PMID: 36805746
DOI: 10.1016/j.jcis.2023.02.053

Abstract

Developing highly efficient electrocatalysts based on appropriate heterojunction engineering and electronic structure modification for the oxygen evolution reaction (OER) has been extensively recognized as an effective approach to increase the efficiency of water splitting. Herein, ultralow Pt-loaded (1 %) NiCoFeP@NiCoFe-PBA hollow nanocages with well-defined heterointerfaces and modified electronic environment are successfully fabricated. As expected, the obtained Pt-NiCoFeP@NiCoFe-PBA exhibits outstanding performance with a low overpotential of 255 mV at 10 mA cm^-2 and a small Tafel slope of 57.2 mV dec^-1. More specifically, the highly open three-dimensional structure, exquisite interior voids and abundant surface defects endow Pt-NiCoFeP@NiCoFe-PBA nanocages with more electrochemical active sites. Meanwhile, experimental results and mechanism studies also reveal that the construction of heterogeneous interfaces as well as incorporation of noble metals could readily induce strong synergistic effects and significantly tailor electronic configurations to optimize the binding energy of the intermediates, thereby achieving prominent OER performance.

Keywords: Electronic structure modification; Heterojunction engineering; OER; Pt-NiCoFeP@NiCoFe-PBA nanocages; Ultralow Pt-loaded.