A study on hydrogen generation from NaBH4 solution using the high-performance Co-B catalyst

S. U. Jeong, R. K. Kim, E. A. Cho, H. J. Kim, S. W. Nam, I. H. Oh, S. A. Hong, S. H. Kim

Research output: Contribution to journalArticle

292 Citations (Scopus)

Abstract

For hydrogen generation from an aqueous alkaline NaBH4 solution, Co-B catalyst was prepared by the chemical reduction method using NaBH 4 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 64.87 kJ mol-1. 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 2 W polymer electrolyte membrane fuel cell (PEMFC) stack was operated and successfully powered a cellular phone.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalJournal of Power Sources
Volume144
Issue number1
DOIs
Publication statusPublished - 2005 Jun 1

Keywords

  • Co-B catalyst
  • Hydrogen generation
  • NaBH
  • Polymer electrolyte membrane fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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