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NiFe 2 O 4 Material on Carbon Paper as an Electrocatalyst for Alkaline Water Electrolysis Module.
- Source :
- Micromachines; Jan2024, Vol. 15 Issue 1, p62, 14p
- Publication Year :
- 2024
-
Abstract
- NiFe<subscript>2</subscript>O<subscript>4</subscript> material is grown on carbon paper (CP) with the hydrothermal method for use as electrocatalysts in an alkaline electrolyzer. NiFe<subscript>2</subscript>O<subscript>4</subscript> material is used as the anode and cathode catalysts (named NiFe(+)/NiFe(−) hereafter). The results are compared with those obtained using CP/NiFe as the anode and CP/Ru as the cathode (named NiFe)(+)/Ru(−) hereafter). During cell operation with NiFe(+)/Ru(−), the current density reaches 500 mA/cm<superscript>2</superscript> at a cell voltage of 1.79 V, with a specific energy consumption of 4.9 kWh/m<superscript>3</superscript> and an energy efficiency of 66.2%. In comparison, for NiFe(+)/NiFe(−), the current density reaches 500 mA/cm<superscript>2</superscript> at a cell voltage of 2.23 V, with a specific energy consumption of 5.7 kWh/m<superscript>3</superscript> and an energy efficiency of 56.6%. The Faradaic efficiency is 96–99%. With the current density fixed at 400 mA/cm<superscript>2</superscript>, after performing a test for 150 h, the cell voltage with NiFe(+)/Ru(−) increases by 0.167 V, whereas that with NiFe(+)/NiFe(−) decreases by only 0.010 V. Good, long-term stability is demonstrated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 2072666X
- Volume :
- 15
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Micromachines
- Publication Type :
- Academic Journal
- Accession number :
- 175078762
- Full Text :
- https://doi.org/10.3390/mi15010062