Enhanced Electrocatalytic Activity of Stainless Steel Substrate by Nickel Sulfides for Efficient Hydrogen Evolution
| Autor: | Hien Duy Mai, Sangmin Jeong, Jong-Sang Youn, Inhwan Oh, Ki-Joon Jeon, Sunyoung Park |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Hydrogen chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrochemistry lcsh:Chemical technology 01 natural sciences Catalysis lcsh:Chemistry NiS-NiS2 lcsh:TP1-1185 stainless steel 304 Physical and Theoretical Chemistry Voltammetry sulfurization Substrate (chemistry) hydrogen evolution 021001 nanoscience & nanotechnology 0104 chemical sciences Nickel chemistry Chemical engineering lcsh:QD1-999 Water splitting 0210 nano-technology Order of magnitude |
| Zdroj: | Catalysts, Vol 10, Iss 1274, p 1274 (2020) Catalysts; Volume 10; Issue 11; Pages: 1274 |
| ISSN: | 2073-4344 |
| Popis: | Water splitting is one of the efficient ways to produce hydrogen with zero carbon dioxide emission. Thus far, Pt has been regarded as a highly reactive catalyst for the hydrogen evolution reaction (HER); however, the high cost and rarity of Pt significantly hinder its commercial use. Herein, we successfully developed an HER catalyst composed of NiSx (x = 1 or 2) on stainless steel (NiSx/SUS) using electrodeposition and sulfurization techniques. Notably, the electrochemical active surface area(ECSA) of NiSx/SUS was improved more than two orders of magnitude, resulting in a considerable improvement in the electrochemical charge transfer and HER activity in comparison with stainless steel (SUS). The long-term HER examination by linear scan voltammetry (LSV) confirmed that NiSx/SUS was stable up to 2000 cycles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|