用铜模喷铸法制备了非晶 Mg65-x Ni21-Pr14 Agx 合金,采用球磨方法细化了合金颗粒。系统研究了不同 Ag 含量对非晶合金电极充放电行为、放电容量、循环稳定性、高倍率放电等性能的影响规律。结果表明,Ag元素的添加改善了合金电极充/放电性能,随着Ag含量的增加,非晶合金电极的最大放电容量和循环稳定性均呈现先增大后减小的规律,其高倍率放电性能也有所提高,适量 Ag 的添加可明显改善非晶Mg-N i-P r系合金的放电性能。
The amorphous alloys Mg65-x Ni21 Pr14 Agx were prepared by copper-mold inj ection casting and the size of the alloy particles was decreased by ball-milling.The effects of different Ag contents to the charge/discharge behavior,cycle stability and high-rate discharge-ability of the amorphous alloy electrodes were investigated re-spectively.The results showed that the charge/discharge properties of alloy electrodes were improved by Ag ad-ditive.The maximum discharge capacity and the cycle stability first increased and then decreased with the in-crease of Mg contents.The high rate discharge discharge-ability of alloy electrodes was also improved.It indi-cated that the discharge property of the amorphous Mg-Ni-Pr-based alloys was significantly improved by adding appropriate Ag content.
参考文献
| [1] | A. Ebrahimi-Purkani;S.F. Kashani-Bozorg .Nanocrystalline Mg_2Ni-based powders produced by high-energy ball milling and subsequent annealing[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):211-215. |
| [2] | Y. Wu;W. Han;S.X. Zhou .Microstructure and hydrogenation behavior of ball-milled and melt-spun Mg-10Ni-2Mm alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):176-181. |
| [3] | Lin-jun Huang;Jian-guo Tang;Yao Wang .Effects of microstructure on the electrode properties of melt-spun Mg-based amorphous alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):186-191. |
| [4] | Wu D C;Liang G Y;Li L et al.Microstructural investi-gation of electrochemical hydrogen storge in amorphous Mg-Ni-La alloy[J].Materials Science and Engineering B,2010,175:248-252. |
| [5] | Lin-jun Huang;Jian-guo Tang;G.Y. Liang;Yao Wang;D.C. Wu .Microstructural Investigation And Electrochemical Property Of Mg_(63)ni_(27)nd_(10) Amorphous Alloy[J].Journal of Power Sources,2009(2):1247-1250. |
| [6] | Peng Hao,Li Shuangshou,Huang Tianyou.Improvement of corrosion resistance in NaOH solution and glass forming ability of as-cast Mg-based bulk metallic glasses by microalloying[J].中国铸造,2011(01):5-8. |
| [7] | 汤宏伟,赵付双,常照荣,贾向前.熔融盐法合成高密度锂离子电池正极材料LiNi0.8Co0.2-xTixO2[J].稀有金属材料与工程,2010(09):1640-1645. |
| [8] | 刘欣,王敬丰,覃彬,聂俭,丁培道.非晶态镁基储氢合金的研究进展[J].材料导报,2006(10):120-122,127. |
| [9] | 罗永春,冯苍,腾鑫,康龙.高温退火R_（0.67）Mg_（0.33）Ni_（3.0）（R=La, Ce, Pr, Nd）贮氢合金电化学性能研究[J].稀有金属材料与工程,2010(01):90-95. |
| [10] | 彭浩 .Mg-Ni-RE 块体非晶合金的制备及其性能研究[D].北京:清华大学,2011. |
| [11] | 张羊换,祁焱,侯忠辉,李霞,张国芳,郭世海.快淬纳米晶/非晶Mg2Ni1-xMnx（x=0～0.4）合金电极的电化学性能[J].功能材料,2011(04):593-597. |
| [12] | 郭佩佩,林玉芳,赵海花,郭世海,赵栋梁.铸态及退火态La（0.75）Mg（0.25）Ni（3.5）Si（0.10）储氢合金相结构和高温电化学性能的研究[J].功能材料,2011(07):1222-1226. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%