研究了二甲基亚砜(DMSO)中Eu3+和Fe2+在Pt电极上的电化学行为.Eu3+的还原为二步不可逆还原,先还原为Eu2+,Eu2+再还原为Eu;而Fe2+则经过一步两电子不可逆过程还原为Fe,并利用循环伏安法测得在0.01 mol·dm-3FeCl2-0.02 md·dm-3柠檬酸-0.10 mol·dm-3LiClO4-DMSO溶液中,Fe2+离子的扩散系数和传递系数分别为4.90×10-6cm2·s-1和0.12.以铜为基体,在Eu(NO3)3-FeCl2-柠檬酸-LiClO4-DMSO体系中,-1.50～-2.20 V(vs.SCE)区间内恒电位电解制得含Eu量23.34%～86.00%(质量分数)的Eu-Fe合金膜.X射线衍射证实所得到的Eu-Fe合金膜都是非晶态的.
参考文献
| [1] | DiSalvo F J .Thermoelectric cooling and power generation[J].Science,1999,285:703. |
| [2] | Müller M;Schmidt H;Braun H F .Isothermal section at 800 ℃of the ternary system Tm-Fe-Si[J].Journal of Alloys and Compounds,1997,257:205. |
| [3] | Sakai T;Kuriyama N;Ishikawa H .Rare earth-based hydrogen storage alloys for rechargeable nickel-metal hydride batteries[J].Journal of Alloys and Compounds,1993,192(1-2):158. |
| [4] | 刘冠昆;童叶翔;刘建平 等.有机溶液中电沉积稀土合金[J].中国稀土学报,1998,16(01):857. |
| [5] | JANZ G J;Tomkins R P T.Nonaqueous Electrolytes Handbook[M].New York:Academic Press,1973:129. |
| [6] | 中山大学金属系.稀土物理化学常数[M].北京:冶金工业出版社,1978:116. |
| [7] | 日本化学会.无机化合物合成手册[M].北京:化学工业出版社,1986:254. |
| [8] | Bard A J;Faulkner L R.Electrochemical Methods[M].John Wiley & Sons Inc New York,2001:236. |
| [9] | 关福玉,高小霞.稀土在丙酮介质中的伏安行为[J].中国稀土学报,1990(02):166. |
| [10] | International Centre for Diffraction Data.Powder diffraction file alphabetical index, Inorganic phases[M].Swarthmore PA:JCPDS,1992 |
| [11] | Power Diffraction File Inorganic Phases[M].JCPDS Swarthmore PA,1992 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%