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一前言银是硷性燃料电池和空气电池中最常用的氧电极催化剂之一。为了制备高活性银催化剂,曾经采用在瑞尼(Raney)银合金中溶出铝和草酸银热分解等方法。M.Svatá等人曾研究过还原剂和还原条件对银催化剂性能的影响。然而,用上述各种方法制得的纯银催化剂的比表面一般不超过5—6米~2/克,其催化活性也不够高。近年来在文献中不断见到藉加入其它组份以提高银催化剂活性的报导,其中最常提到的是加入 Hg,或同时加入Hg 和 Mo,均能显著改善银催化剂的性能。但由于汞的毒性大,加入的量又多,殊不宜
Preface Silver is one of the most commonly used oxygen electrode catalysts in alkaline fuel cells and air cells. In order to produce highly active silver catalysts, methods such as the dissolution of aluminum and the decomposition of silver oxalate in Raney silver alloys have been used. M. Svatá et al. Have studied the effect of reducing agents and reducing conditions on the performance of silver catalysts. However, the specific surface area of the pure silver catalyst obtained by the above-mentioned various methods generally does not exceed 5-6 m 2 / g, and its catalytic activity is not high enough. In recent years, there have been reports in the literature of the addition of other components to increase the activity of the silver catalyst. Among them, the most commonly mentioned addition of Hg or both Hg and Mo significantly improves the performance of the silver catalyst. However, due to the toxicity of mercury, the added amount of more, it is inappropriate