| 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 | |
| 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 m2·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。 | |
| 关键词: 氧还原 电催化 燃料电池 | |
| 基金项目: 华东理工大学本科实验实践改革与建设项目（No.BJ0121002）和无机元素化学虚拟仿真实验开发与研究资助项目 | |
| Abstract: 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. | |
| Keywords: oxygen reduction electrocatalysis fuel cell | |
| 投稿时间：2018-09-27 修订日期：2019-01-07 | |
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| 王海文,王一丹,茅潜龙,安国强,车强,张顺江,殷馨.硫掺杂有序介孔碳材料作为燃料电池氧还原催化剂[J].无机化学学报,2019,35(3):369-375. | |
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