掺氮碳纳米层包裹的掺氮二氧化钛核壳结构制备及其氧还原催化研究
Study on the enhanced oxygen reduction reaction at core-shell structures of N-Doped TiO2 encapsulated in N-Doped carbon
石超凡 1张浩权 1李文鹏1
作者信息
- 1. 齐鲁工业大学(山东省科学院) 化学与化工学院,山东 济南 250353
- 折叠
摘要
氧还原反应是燃料电池阴极的关键反应,目前工业上主要用昂贵稀缺的铂材料作为燃料电池的氧还原催化剂,发展廉价高效的氧还原催化剂对降低燃料电池成本具有重要意义.通过水热反应和煅烧法制备了掺氮碳纳米层包裹的掺氮二氧化钛(N-TiO2@N-C)核壳结构材料,用透射电镜、X射线衍射、X射线光电子能谱、电化学测试等手段对该催化剂进行了表征,得出其在碱性介质中具有比贵金属催化剂Pd/C和Pt/C更高的氧还原催化活性.
Abstract
Oxygen reduction reaction(ORR)is the key cathode reaction in fuel cells.Fabricate catalyst with earth-abundant elements instead of platinum is an effective method to reduce the cost of fuel cells.In this work,nitrogen-doped TiO2 encapsulated in nitrogen-doped carbon(N-TiO2@N-C)was facile fabricated with hydrothermal-calcination procedures.N-TiO2@N-C was characterized by transmission electron microscope,X-ray diffraction,X-ray photoelectron spectroscopy and electrochemical measurements.It exhibits a higher activity for oxygen reduction reaction in alkaline media compared with Pd/C and Pt/C.
关键词
氧还原反应/燃料电池/二氧化钛/核壳结构/碱性介质Key words
oxygen reduction reaction/fuel cells/TiO2/core-shell structure/alkaline media引用本文复制引用
基金项目
山东省自然科学基金(ZR2020QB070)
出版年
2024
NETL
NSTL
维普
万方数据