直接硼氢化物燃料电池阳极电催化剂研究进展

Advances in anode electrocatalysts for the direct borohydride fuel cell

以硼氢化物作为燃料电池的燃料因其高的理论电动势和比能量而引起研究者的广泛关注。理论上,BH4-的电氧化反应为八电子反应,但实际上由于所用阳极电催化剂的不同,BH4-电氧化释放出的电子数也不同。如何抑制BH4-在阳极的水解反应,促进其八电子氧化反应一直是直接硼氢化物燃料电池研究中的核心问题。综述了近几年来国内外在直接硼氢化物燃料电池阳极电催化剂方面所取得的研究进展,并对这一领域中需要深入研究的主要问题进行了论述。

Borohydride as fuel for fuel cell has attracted much attention due to its high theoretical electromotive force and specific energy in recent years. Theoretically, one ion of BH4^- can generate eight electrons, however, the number of electrons generated by per ion of BH4^- oxidized is different due to the different anode electrocatalysts. How to restrain the borohydride hydrolysis and how to obtain eight-electron reaction are the key issues for the direct borohydride fuel cell. In this paper, the anode electrocatalysts used in the direct borohydride fuel cells were reviwed and some problems in further study were discussed.