Boosting performance of CdTe photocathode with pulse-reverse electrodeposited nickel telluride-nickel phosphide dual co-catalysts. (22nd February 2023)

• Record Type: Journal Article
• Authors: Jo, Woohyeon; Han, Seungyeon; Jeong, Jaebum; Kim, Taegeon; Son, Min-Kyu; Yoon, Seog-Young; Jung, Hyunsung
• Is Part Of: International journal of hydrogen energy. Volume 48:Number 16(2023)
• Page Start: 6253
• Page End: 6261
• Publication Date: 2023-02-22
• Subjects: Dual co-catalyst -- Nickel phosphide -- Nickel telluride -- Cadmium telluride -- Photocathode -- Hydrogen evolution reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.10.225
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Herein, noble-metal free Ni–Te/Ni–P dual co-catalysts are investigated as attractive candidates for improving the photoelectrochemical (PEC) performance of CdTe photocathodes. The Ni–Te/Ni–P dual co-catalysts are deposited on CdTe photocathodes via pulse-reverse electrodeposition and post annealing. The Ni–Te/Ni–P catalyzed CdTe photocathodes show a remarkable PEC performance, especially in terms of the photocurrent density, which is approximately 11.06 times higher than that of the pristine CdTe photocathode. The Ni–Te/Ni–P dual co-catalysts boost the catalytic activity via enhanced charge transfer and surface reaction kinetics. The photogenerated electrons and holes are effectively separated by the Schottky contact between the Ni–Te/Ni–P dual co-catalysts and the CdTe absorbing layer. Thus, the rational design of the CdTe photocathode with the Ni–Te/Ni–P dual co-catalysts can dramatically enhance the PEC performance of the CdTe photocathodes.