| abstract |
The rate of hydrogen generation in proton-exchange-membrane (PEM) fuel cells (10) is greatly accelerated by mixing a first aqueous alkali borohydride 5 solution with a second aqueous solutionin the presence of one or more transition metal catalysts: wherein the first solution, comprises (a) 5 to 50 wt% MBH4, where M is an alkali metal, (b) 5 to 40 wt% alkali hydroxide or alkaline metal hydroxide, and (c) the balance water, and wherein the second solution comprises (a) 51 to 100% water, and (b) the balance, if any, comprising at least one water-soluble additive. |