FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, and namely to cathode materials based on nanocrystalline Fe-Ni particles. A cathode for electrochemical hydrogen generation is made in the form of a steel substrate with a nanocomposite Fe-Ni coating applied onto its surface. The Fe-Ni coating with Ni content of 3-10 wt % has thickness of 0.5-0.9 mm and average grain size of up to 40 nm. A manufacturing method of a cathode for electrochemical hydrogen generation is characterised by the fact that a mechano-activated Fe-Ni powder nanocomposition with Ni content of 3-10 wt % is prepared and applied layer-by-layer onto the steel substrate, and layer-by-layer laser sintering is performed. Laser sintering is performed in vacuum with a fibre-optic pulse ytterbium laser at pulse generation frequency of 20000-100000 Hz and one-pulse time of 100 ns.
EFFECT: produced cathode is characterised by reduced hydrogen overvoltage.
2 cl, 2 tbl, 1 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF INCREASING CORROSION STABILITY OF NON-ALLOY STEEL | 2012 |
|
RU2513670C2 |
IRON-BASED MATERIAL FOR ELECTRODE FOR ELECTROCHEMICAL PRODUCTION OF HYDROGEN AND METHOD OF ITS MANUFACTURING | 2013 |
|
RU2518466C1 |
CATHODE MATERIAL BASED ON NANOCRYSTALLINE CEMENTITE, METHOD OF ITS PRODUCTION, CATHODE FOR ELECTROLYTIC OBTAINING OF HYDROGEN FROM WATER ALKALINE AND ACIDIC SOLUTIONS AND METHOD OF ITS MANUFACTURING | 2011 |
|
RU2511546C2 |
PROCESS OF FORMATION OF VOLUMETRIC-POROUS LAYER OF METAL WITH OPEN POROSITY ON CURRENT-CONDUCTING BACKING | 1999 |
|
RU2150533C1 |
METHOD FOR OBTAINING A BIORESORBABLE MATERIAL BASED ON MAGNESIUM AND HYDROXYAPATITE WITH A PROTECTIVE MULTICOMPONENT COATING | 2021 |
|
RU2763138C1 |
SOLID OXIDE FUEL CELL | 2005 |
|
RU2356132C2 |
SOLID OXIDE FUEL CELL | 2008 |
|
RU2399996C1 |
SOLID-OXIDANT FUEL CELL USING CERAMIC ANODE | 2003 |
|
RU2323506C2 |
ELECTROLYTIC CELL AND ELECTROLYSIS BATH | 2013 |
|
RU2575343C1 |
USE OF SULFIDE COMPOSITIONS | 2020 |
|
RU2799965C2 |
Authors
Dates
2015-06-20—Published
2013-03-01—Filed