Work

Construction of Co/MoSe2 Mott-Schottky heterojunction on car-bon nanotubes for highly efficient hydrogen evolution

Year: 2023

Type: preprint

Abstract: In this work, we report a typical Mott-Schottky electrocatalyst composed of metallic Co and semiconducting MoSe2 on carbon nanotubes (Co/MoSe2@CNT), prepared by sol-gel process followed by thermal reduction treatment. The characterization results and theoretical calculations reveal that Co/MoSe2 Mott-Schottky heterojunction can cause electron redistribution and establish an build-in electric field, which can not only optimize the adsorption energy of the reaction intermediates, but also promote the charge transfer during the hydrogen evolution process. Thus, Co/MoSe2@CNT deliver excellent catalytic activity with a low overpotential of 185 mV at 10 mA cm-2 and a small Tafel slope of 69 mV dec-1. This work provides a new strategy for constructing Co/MoSe2 Mott-Schottky heterojunc-tions and highlighting the Mott-Schottky effect, which may inspire the development of more efficient Mott Schottky electrocatalysts for H2 production in the future.

Source: SSRN Electronic Journal

DOI: 10.2139/ssrn.4481696

Authors: Xianpei Ren, Qiwei Hu, Fang Ling, Fei Wu, Qiang Li, Liuqing Pang

Institutions: Sichuan University of Science and Engineering, Nankai University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funder: Natural Science Foundation of Sichuan Province