MoS2||CoP heterostructure loaded on N, P-doped carbon as an efficient trifunctional catalyst for oxygen reduction, oxygen evolution, and hydrogen evolution reaction. (6th October 2021)

• Record Type: Journal Article
• Authors: Cai, Jiannan; Zhang, Xiaofeng; Pan, Yuqi; Kong, Yanhong; Lin, Shen
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 69(2021)
• Page Start: 34252
• Page End: 34263
• Publication Date: 2021-10-06
• Subjects: Oxygen reduction reaction -- Oxygen evolution reaction -- Hydrogen evolution reaction -- Heterostructure -- N, P-doping carbon; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.07.220
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Exploring multifunctional electrocatalysts is crucial for the development of energy conversion and storage equipments, such as fuel cells, water splitting devices and zinc-air batteries. Herein, we provide a rational design whereby the cobalt phosphide particles are introduced into molybdenum sulfide nanosheets to form a heterostructure (MoS2 ||CoP) through the ultrasonic method and calcination. Subsequently, N, P-doped carbon (NPC) is obtained synchronously. The as-prepared MoS2 ||CoP/NPC demonstrates highly effective multifunctional catalytic performance for oxygen evolution and hydrogen evolution reaction at lower overpotential, as well as oxygen reduction reaction at high half-wave potential. What this reveals is higher power density and superior stability in zinc-air battery. The excellent electrocatalytic activity of MoS2 ||CoP/NPC may be attributed to the presence of the MoS2 ||CoP heterostructure, as well as N, P-doped carbon coupled with a high percentage of pyridinic-N. This work proposes a novel and facile strategy to prepare the heterostructure compound and serves as a good reference for constructing efficient and low-cost electrocatalysts. Graphical abstract: Image 1 Highlights: The MoS2 ||CoP/NPC composite was prepared by ultrasonic mixing and calcination. The MoS2 ||CoP/NPC presents MoS2 ||CoP heterostructure and abundant N, P co-doped carbon. The MoS2 ||CoP/NPC composite exhibits trifunctional electrocatalysis for ORR, OER, and HER. The composite offers high power density and stability when used in zinc-air batteries.