Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10567370 | Journal of Power Sources | 2005 | 6 Pages |
Abstract
For hydrogen generation from an aqueous alkaline NaBH4 solution, Co-B catalyst was prepared by the chemical reduction method using NaBH4 as a reduction chemical. To design a hydrogen generator, hydrogen generation rate was measured using the Co-B catalyst as a function of solution temperature, amount of catalyst loading, NaBH4 concentration, and NaOH (a base-stabilizer) concentration. Activation energy for the hydrogen generation reaction was measured to be 64.87Â kJÂ molâ1. Compared to Ru catalysts previously used, the low-cost Co-B catalyst exhibited comparable activity for the hydrogen generation reaction. Using the hydrogen generation system employing the Co-B catalyst, a 2Â W polymer electrolyte membrane fuel cell (PEMFC) stack was operated and successfully powered a cellular phone.
Related Topics
Physical Sciences and Engineering
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Authors
S.U. Jeong, R.K. Kim, E.A. Cho, H.-J. Kim, S.-W. Nam, I.-H. Oh, S.-A. Hong, S.H. Kim,