A highly stable CoMo₂S₄/Ni₃S₂ heterojunction electrocatalyst for efficient hydrogen evolution

Abstract

A CoMo2S4/Ni3S2 heterojunction is prepared with an overpotential of only 51 mV to drive a current density of 10 mA cm−2 in 1 M KOH solution and ∼100% of the potential remains in the ∼50 h chronopotentiometric curve at 10 mA cm−2.

CoMo2S4 with Superior Conductivity for Electrocatalytic Hydrogen Evolution: Elucidating the Key Role of Co

“…Nevertheless, limited by its intrinsic properties (including limited active site and electrical conductivity), [ 24–27 ] the HER performance of MoS 2 is poor. Many efforts (including plasma modification, [ 28–29 ] materials compositing, [ 30–31 ] and metal doping [ 32–33 ] ) have been paid on modifying MoS 2 to increase its HER performance, among which Co doping is one of the most effective method. Recently, Liu et al.…”

Processable and recyclable polyurethane/HNTs@Fe3O4 solid–solid phase change materials with excellent thermal conductivity for thermal energy storage

“…In recent years, to solve the energy crisis and greenhouse gas emissions problems, researchers pay more and more attention to develop green resources [1][2][3] and the high energy storage [4,5] and transportation of renewable energy and industrial waste heat. [6,7] The phase change materials (PCMs) can store and release heat energy through the transformation of the material phase state and become important materials to realize energy storage and reuse.…”

Novel heterostructure Cu2S/Ni3S2 coral-like nanoarrays on Ni foam to enhance hydrogen evolution reaction in alkaline media

“…It can adjust the adsorption/desorption energy, expand the effective surface area, regulate the electronic structure, and exert a synergistic role between ions. [17][18][19] Relevant literature has reported that Fe, 20 Co, 21 Zn, 22 and Mo 23 doping in Ni 3 S 2 improves HER or OER performance. However, Cu-doped high-activity Ni 3 S 2 catalyst with a great HER performance has rarely been reported.…”