分枝状Pt纳米晶制备、表征及对燃料电池阴极反应催化性能研究

来源 :第十五届全国氢能会议暨第7届两岸三地氢能研讨会 | 被引量 : 0次 | 上传用户:Thomas1007
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直接甲醇燃料电池(DAFCs)凭借其诸如低操作温度、易于运输、储存、高的能量密度和低污染排放等优良性能而广受人们关注[1-2].然而,现实中依然有一些难题阻碍DAFCs大范围商业化,尤其是阴极Pt催化剂在ORR中表现出一些潜在的问题,包括延缓的ORR动力学、由于醇类混合电位效应而导致的性能降低、差的稳定性等缺点,这已成为提高DAFCs性能的主要瓶颈[1-2].目前,在电催化剂设计中金属表面的非金属分子化学修饰已成为一个新的研究趋势,这种修饰可以影响金属的电子的性质或者阻止毒性物种及其阴离子的吸附[3].
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