Abstract:
Co-Zr-P catalyst electroplated on Cu substrate in a chloride based solution with an addition of H2PO2-ions were developed for hydrogen generation from highly alkaline NaBH4 solution. The microstructure of Co-Zr-P and their hydrogen generation efficiency were analyzed as a function of cathodic current density at an electroplating time of 300s. An amorphous Co-Zr-P, catalyst formed at a cathodic current density of 0.75A exhibited the best hydrogen generation capability. The hydrogen generation capability of the electrodeposited Co-Zr-P catalyst is found to be a function of cathodic current density i.e. the parameters determining the concentration of P content in the Co-Zr-P catalyst. Co-Zr-P with 18at% of P electrodeposited at a cathodic current density of 0.75A for 300s showed the best hydrogen generation of 5500 mL/min g-catalyst. A previous study on Electrodeposited Co-P shows a hydrogen generation rate of 954 mL/min g-catalyst[1]. With the addition of a little amount of Zr in the electroplating bath P content increases so the source of Phosphorus i.e. Sodium phosphinate can be decreased accounting for cheaper electroplating bath cost.
Page(s):
94-98
DOI:
DOI not available
Published:
Journal: Proceedings 6th International Bhurban Conference on Applied Sciences and Technology , Volume: 1, Issue: 0, Year: 2009