(上海大学化学系熔盐化学研究室，上海 201800)
摘 要: 碳酸盐熔盐燃料电池阴极材料NiO在熔盐电解质中的溶解，是该技术能否实用的关键之一。实验表明，NiO在Li2CO3-Na2CO3熔盐中的溶解度在CO2气氛和650℃条件下约为5×10-6(摩尔分数)。LiFeO2或NaFeO2的添加虽能降低NiO浓度，但在CO2气氛下会分解生成α-Fe2O3。
关键字: 熔盐燃料电池；NiO；溶解度
（Department of Chemistry, Laboratory of Molten Salt Chemistry, Shanghai University, Shanghai 201800, P.R.China）
Abstract:The dissolution of NiO cathode is one of the "bottleneck" problems in the commercialization of molten carbonate fuel cell. It has been found that the solubility of NiO in Li2CO3-Na2CO3 melt is around 5×10-6(mole fraction) under CO2 atmosphere and 650℃. And the additives LiFeO2 or NaFeO2 for the hindrance of NiO dissolution in MCFC tend to react with CO2 to form the α-Fe2O3 in the operation of MCFC.
Key words: molten carbonate fuel cell; NiO; solubility
