纳米纤维素改性酚醛树脂对碳纸电化学性能的影响研究

Study on the Effect of Nanocellulose Modified Phenolic Resin on the Electrochemical Properties of Carbon Paper

本研究探究了以纳米纤维素为酚醛树脂改性剂和成孔剂制备的质子交换膜燃料电池(PEMFCs)用碳纸性能,分析了纳米纤维素添加量对碳纸电阻率、透气性及机械强度等指标的影响,并测试了改性碳纸制备的电池性能。结果表明,与未改性碳纸相比,纳米纤维素添加量为0.20 g的改性碳纸电阻率降低了26.35%,其制备的PEMFCs功率密度峰值提高了81.56%,为325 mW/cm2,纳米纤维素改性酚醛树脂明显实现了碳纸与燃料电池性能的整体提升。

This study investigated the performance of carbon paper for proton exchange membrane fuel cells(PEMFCs)prepared with nano⁃cellulose as a modifier of phenolic resin and pore-forming agent.The effects of nanocellulose addition amount on the electrical resistivity,permeability,and mechanical strength of carbon paper were explored,and the performance of cell prepared by modified carbon paper was tested.The results showed that compared with unmodified carbon paper,the electrical resistivity of the modified carbon paper with nanocel⁃lulose addition amount of 0.2 g was reduced by 26.35%.The peak power density of it prepared PEMFCs of 325 mW/cm2,increased by 81.56%.Nanocellulose modified phenolic resin obviously improved the overall performance of carbon paper and fuel cell.