Abstract: The alkaline sulfide-air fuel cell system was assembled using alkaline sulfide solution as anode fuel and activated carbon as anodic catalyst. The electrochemical behavior of alkaline sulfide was investigated in a three-electrode system and the effects of concentration of sulfide ion，operation temperature on open circuit potential（OCP）and discharge platform were studied. The OCP of anode was rather negative and stable. Through single fuel cell test，a maximum power density of 11mW/cm2 was obtained at 0.24V with current density of 46mA/cm2，demonstrating excellent electrochemical performance for energy conversion. The alkaline sulfide-air fuel cell exhibited promising perspective due to its research potential and application value.

Key words: fuel cells, electrochemistry, catalysis, activated carbon, alkaline sulfide

摘要： 以碱性硫离子电解液作为阳极燃料构建了硫离子-氧气燃料电池体系，采用粉末活性炭材料制备了涂膏电极，将碱性硫化钠溶液作为阳极燃料，通过建立电化学三电极模型对电极在碱性硫离子溶液中的放电性能进行研究，主要考察了硫离子浓度、体系温度对开路电位以及放电平台的影响。电极在碱性硫离子溶液中具有较负的开路电位和稳定的放电平台；通过单体电池测试在0.24V电压下获得11mW/cm2的最大功率密度，此时电池的电流密度为46mA/cm2，证明碱性硫离子燃料电池在阳极不使用贵金属催化剂的情况下表现出良好的放电性能，是一种具有潜在研究价值和广泛应用前景的电化学体系。

关键词: 燃料电池, 电化学, 催化, 活性炭, 碱性硫离子