Uk-Rae Cho Kai Wang Geun-Woo Kim Bon-Heun Koo
材料科学技术（英文）
Nano-particles have several interesting properties which are not shown in bulk materials because of their high ratio of surface area to volume. FeCo alloy nano-particles with soft magnetic properties are demanded for various applications such as optics, eletronics and magnetics. Through the polyol method, highly purified particles with mono-dispersibility in various sizes can be produced and used as high-tech functional materials. In this study, the magnetic characteristics of FeCo alloy with Ag seed added in the production process of mono-dispersed nano-particles through the polyol method were investigated.
关键词:
Polyol method
,
FeCo
,
Ag
,
Magnetics
王琪
,
陆兴
,
辛勤
,
孙公权
催化学报
doi:10.1016/S1872-2067(14)60063-2
采用多元醇法制备了不同原子比例和载量的PtSnRu/C催化剂,利用透射电镜和X射线光电子能谱表征了所制备催化剂的物化性能,采用直接乙醇燃料电池(DEFC)单池性能测试了其电化学性能,并利用电化学原位光谱、气相色谱和中和滴定分析了乙醇电氧化过程和产物. DEFC单电池测试表明Pt2.6Sn1Ru0.4/C催化剂具有较高的电池性能,其中,以60 wt% Pt2.6Sn1Ru0.4/C催化剂为阳极的DEFC性能最高,90oC下最高功率密度为121 mW/cm2.电化学原位红外光谱和阳极产物分析表明乙酸、乙醛、乙酸乙酯和CO2是乙醇电化学氧化产物, Pt2.6Sn1Ru0.4/C催化剂上乙醇的氧化效率较高.阳极乙醇氧化活化能和催化剂表面组成分析结果表明,表面组成的相互作用使Pt2.6Sn1Ru0.4/C催化剂具有较低的乙醇氧化活化能和较高的乙醇氧化活性.
关键词:
直接乙醇燃料电池
,
阳极催化剂
,
多元醇法
,
阳极产物
,
乙醇氧化效率
