Hydrolysis of AlLi/NaBH₄ system promoted by Co powder with different particle size and amount as synergistic hydrogen generation for portable fuel cell

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• 作者：Mei Qiang Fan ; Yu Wang ; Guang Lei Tian ; De sheng Mei ; Da Chen ; Kang Yin Shu
• 关键词：Hydrogen generation ; Co-based catalyst ; Al&ndash ; Li&ndash ; Co/NaBH4 system
• 刊名：International Journal of Hydrogen Energy
• 出版年：2013
• 出版时间：21 August, 2013
• 年：2013
• 卷：38
• 期：25
• 页码：10857-10863
• 全文大小：1898 K

文摘

Hydrogen generation from the hydrolysis of aluminum lithium/sodium borohydride (referred to as AlLi/NaBH₄) system activated by Co powder with different particle size and amount was evaluated in this paper. The designed aluminum-lithium-cobalt (referred to as Al-Li-Co/NaBH₄) systems including Al-5?wt % Li-50?wt % nano Co, Al-7.5?wt % Li-25?wt % nano Co, Al-5?wt % Li-50?wt % micro Co, and Al-7.5?wt % Li-25?wt % micro Co had 100 % hydrogen yield at 323?K. The hydrogen generation rates of these systems were regulated by Co species, Co amount, as well as consecutive runs of NaBH₄ hydrolysis. The underlying activation mechanism, including the formation of Al_0.94Co_1.06 alloy and highly active and stable Co-based catalyst has been elaborated in this study. Experimental data present an inexpensive and highly efficient hydrogen source for portable fuel cell.