当前位置: X-MOL 学术Electrocatalysis › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fabrication of MEA from Biomass-Based Carbon Nanofibers Composited with Nickel-Cobalt Oxides as a New Electrocatalyst for Oxygen Reduction Reaction in Passive Direct Methanol Fuel Cells
Electrocatalysis ( IF 3.1 ) Pub Date : 2020-05-30 , DOI: 10.1007/s12678-020-00607-w
Farhad Golmohammadi , Masoud Amiri

Biomass has some advantages including renewability, abundant resources, being eco-friendly, easy processing, and low cost; and it is an important step in designing electrocatalysts in fuel cells as clean energy sources. In this study, a biomass-based carbon nanofiber of Typha domingensis, as available biomass source, and nickel-cobalt oxides is synthesized. The physicochemical techniques including X-ray powder diffraction, Fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, Barrett-Joyner-Halenda, and Brunauer-Emmett-Teller as well as electrochemical techniques are used to evaluate the surface morphology, crystal structure, and electrochemical performance of composites. The biomass-derived composite is used as a new electrocatalyst for the oxygen reduction reaction and oxygen evaluation reaction. A membrane electrode assembly is prepared by employing of the produced composite for alkaline passive direct methanol fuel cell, which characterized by polarization, power density curves, methanol crossover test, and stability test for 8 h. Electrochemical results show that the composite is an appropriate electrode material for oxygen reduction reaction in passive direct methanol fuel cells.

Graphical Abstract



中文翻译:

由生物质基碳纳米纤维与镍-钴氧化物复合作为被动直接甲醇燃料电池中氧还原反应的新型电催化剂制备MEA

生物质具有可再生性,资源丰富,环境友好,易于加工,成本低等优点。这是设计燃料电池中的电催化剂作为清洁能源的重要一步。在这项研究中,香蒲的生物质基碳纳米纤维作为可利用的生物质来源,合成了镍钴氧化物。物理化学技术包括粉末X射线衍射,傅立叶变换红外光谱,能量色散X射线光谱,场发射扫描电子显微镜,透射电子显微镜,热重分析,Barrett-Joyner-Halenda和Brunauer-Emmett-Teller以及电化学技术可用于评估复合材料的表面形态,晶体结构和电化学性能。源自生物质的复合物用作氧还原反应和氧评估反应的新型电催化剂。通过使用所生产的用于碱性被动式直接甲醇燃料电池的复合材料制备膜电极组件,该复合材料具有极化,功率密度曲线,甲醇穿越测试,并进行8小时稳定性测试。电化学结果表明,该复合材料是被动式直接甲醇燃料电池中氧还原反应的合适电极材料。

图形概要

更新日期:2020-05-30
down
wechat
bug