One-Step Synthesis of Nickel Sulfides and Their Electrocatalytic Activities for Hydrogen Evolution Reaction: A Case Study of Crystalline h-NiS and o-Ni9S8 Nanoparticles

Author(s)

da Silva, Mitchell G. S. ^[1] ; Leite, Celisnolia M. ^[2] ; Cordeiro, Marco A. L. ^[3] ; Mastelaro, Valmor R. ^[4] ; Leite, Edson R. ^{[5, 1]}

Affiliation

^[1] Univ Fed Sao Carlos, Chem Dept, CDMF, LIEC, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Chem Dept, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Mat Engn Dept, BR-13565905 Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos, SP - Brazil

^[5] CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: ACS APPLIED ENERGY MATERIALS; v. 3, n. 10, p. 9498-9503, OCT 26 2020.
• Web of Science Citations: 0

Abstract

Electrocatalytic materials play a crucial role in the development of technologies for hydrogen production (hydrogen evolution reaction) from renewable and sustainable energy resources. Among these materials, nickel sulfides are promising catalysts due to their activity, stability, and cost-effectiveness. However, while the performance of nickel sulfides is linearly correlated to the crystalline structure, synthesis of single crystalline phases of nickel sulfides with controlled morphology is not trivial. In the face of this challenge, we report a simple and selective method to synthesize different phases and morphologies of nickel sulfide with superior electrocatalytic activities, by combining microwave energy and a solvothermal method. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC