N,S双掺杂碳纳米材料的合成及ORR性能研究

以生物质荆芥杆为前驱体,在N2气氛的保护下经高温碳化制备出了一种新型的用于燃料电池阴极氧还原的N、S双掺杂的非金属电催化剂,并研究了不同热解温度和洗涤条件对其催化性能的影响.结果表明,800℃热解及40℃稀盐酸洗涤所得产物的催化性能最优:在0.1mol·L-1 KOH溶液中,一步四电子还原过程,具有优异的催化氧还原活性、抗一氧化碳中毒以及抗甲醇干扰能力.

Synthesis of N,S Co-doped Carbon Nanomaterials and Their Application as ORR Electrocatalyst

A new type of N,S co-doped non-metal catalyst for cathode oxygen reduction reaction(ORR)in fuel cell was prepared using biomass as the precursor by high temperature carbonization in N2 atmosphere.The structure and composition were characterized and analyzed,and the effect of calcination temperature on the catalyst performance was discussed.The results indicate that the optimal carbonization temperature is 800 ℃,and the acid treatment benefits the catalyst activity.The catalyst shows excellent electrochemical activity,resistance to CO poisoning and methanol in 0.1mol·L-1 KOH solution.