Enhancement of oxygen reduction reactivity on TiN by tuning the work function via metal doping

Mitsuharu Chisaka; Toshiyuki Abe; Rong Xiang; Shigeo Maruyama; Hirofumi Daiguji

doi:10.1039/d2cp04326b

Enhancement of oxygen reduction reactivity on TiN by tuning the work function via metal doping

Phys Chem Chem Phys. 2022 Dec 14;24(48):29328-29332. doi: 10.1039/d2cp04326b.

Authors

Mitsuharu Chisaka¹, Toshiyuki Abe², Rong Xiang^{3

4}, Shigeo Maruyama⁴, Hirofumi Daiguji⁴

Affiliations

¹ Department of Sustainable Energy, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan. chisaka@hirosaki-u.ac.jp.
² Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, 036-8561, Japan.
³ State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
⁴ Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

PMID: 36399150
DOI: 10.1039/d2cp04326b

Abstract

Oxide layers on conductive TiN have recently been investigated to catalyse the oxygen reduction reaction (ORR) in acidic media. The ORR reactivity, i.e., activity and selectivity, has been correlated with the surface nitrogen atoms. A new strategy, optimising the work function via the doping of foreign metals, is revealed herein to enhance the reactivity.