直接乙醇燃料电池阴极制备与装配工艺优化实验设计与实施  

Experimental design and implementation of cathode preparation and assembly process optimization for direct ethanol fuel cells

作　　者：乔金硕 张琪 陈湘君 翟雪 孙旺 QIAO Jinshuo;ZHANG Qi;CHEN Xiangjun;ZHAI Xue;SUN Wang(School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102401,China)

机构地区：[1]北京理工大学化学与化工学院,北京102401

出　　处：《实验技术与管理》2023年第9期109-116,141,共9页Experimental Technology and Management

摘　　要：为优化直接乙醇燃料电池的阴极催化剂,该文采用化学还原一步法分别制备出以活性炭、纳米碳和多壁碳纳米管为载体的Pt/C催化剂,研究了载体对催化剂性能的影响,并确定纳米碳为最优载体。以纳米碳为载体,采用相同工艺制备出具有核壳结构的Pt-Fe和Pt-Co合金催化剂,将其与Pt/纳米碳催化剂进行对比分析,探究了Fe、Co两种过渡金属对催化剂氧还原性能、稳定性等的影响,最终获得性能优于商业Pt/C催化剂的Pt-Fe/纳米碳合金催化剂。改进了电极制备及单电池装配工艺,提高了电池性能和实验成功率。Pt/C catalysts supported on activated carbon,nano carbon,and multi walled carbon nanotubes were prepared by a one-step chemical reduction method.The factor of carbon carriers on the catalyst performance were studied in order to obtain the better cathode catalyst for direct ethanol fuel cells,and the nano carbon is the optimal support.Then,using nano carbon as the carrier,Pt-Fe and Pt-Co alloy catalysts with core-shell structure were prepared by the same method.The transition metals Fe,Co effects on the oxygen reduction performance and stability of the catalyst were investigated and compared with that of Pt/nano carbon catalysts.Finally,nano carbon supported Pt-Fe alloy catalysts shows the best performance which is better than commercial Pt/C catalysts.The process optimization of electrode preparation and single-cell assembly improved the cell performance,meanwhile increasing the experimental success probability.

关 键 词：直接乙醇燃料电池 PT/C催化剂 Pt-Fe/纳米碳 Pt-Co/纳米碳 核壳结构 

分 类 号：TK01[动力工程及工程热物理]