硫掺杂有序介孔碳材料作为燃料电池氧还原催化剂  

Sulfur-Doped Ordered Mesoporous Carbon as Fuel Cell Electrocatalyst for Oxygen Reduction

作　　者：王海文[1] 王一丹 茅潜龙 安国强 车强 张顺江 殷馨[1] WANG Hai-Wen;WANG Yi-Dan;MAO Qian-Long;AN Guo-Qiang;CHE Qiang;ZHANG Shun-Jiang;YIN Xin(School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China)

机构地区：[1]华东理工大学化学与分子工程学院,上海200237

出　　处：《无机化学学报》2019年第3期369-375,共7页Chinese Journal of Inorganic Chemistry

基　　金：华东理工大学本科实验实践改革与建设项目(No.BJ0121002);无机元素化学虚拟仿真实验开发与研究资助项目

摘　　要：以百里香酚蓝为前驱物,采用硬模版法一步合成硫掺杂的有序介孔碳材料(S-OMC)。在900℃下热解负载百里香酚蓝的介孔二氧化硅SBA-15,获得了具有石墨孔壁结构的有序介孔碳材料(S-OMC-900)。硫元素均匀有效地分布在碳材料介孔孔壁上,并对催化氧还原反应(ORR)起到了关键性作用。S掺杂的有序介孔碳材料的比表面积为1 230 m^2·g^(-1),孔径4.6 nm,有序的孔道结构保证了氧还原反应的物料运输,增大了催化活性。测试结果表明,所制备的S-OMC-900具有良好的催化活性和稳定性。与商业Pt/C比较,S-OMC-900具有更好的甲醇耐受性。The novel sulfur-doped ordered mesoporous carbon (S-OMC) was prepared via one-step hard-template method employing thymol blue as a single precursor. The S-OMC obtained at 900 ℃ showed appropriate graphitization degree and hierarchical pore structures with a high surface area of 1 230 m2·g-1 and a pore size distribution centered at 4.6 nm. These unique local structures and thio-phene S active sites for oxygen reduction reaction (ORR) contributed to the efficient catalytic performance of this ordered mesoporous carbon. It exhibited the ORR half wave potential of -0.21 V in 0.1 mol·L-1 KOH, and with superior stability and methanol tolerance in alkaline media. This one-step nanocasting route provides an industrially feasible synthesis for S doped ordered mesoporous carbon and shows efficient electroreduction activity for ORR compared to commercial Pt/C.

关 键 词：氧还原 电催化 燃料电池 

分 类 号：O613.51[理学—无机化学]