The present invention relates to a coolant composition for fuel cell coolant, comprised of sulfur containing alcohol or sulfur containing phenol having at least one sulfur atom per molecule, which effectively prevents increase of electric conductivity due to oxidation of its base component for a long time. The coolant composition when diluted with water to a predetermined concentration effectively suppresses increase of electric conductivity of the coolant and maintain fluctuation of electric conductivity within the range from 0 to 10µS/cm so that power generation efficiency of the fuel cell may not be lowered.
本发明涉及一种用于燃料电池冷却剂的冷却剂组合物,该组合物由含
硫醇或含
硫苯酚组成,每个分子中至少有一个
硫原子,可长期有效地防止因其基本成分氧化而导致的电导率升高。当冷却剂组合物与
水稀释到预定浓度时,可有效抑制冷却剂电导率的增加,并将电导率的波动保持在 0 至 10µS/cm 的范围内,从而不会降低燃料电池的发电效率。