研究了元素Ti对贮氢电极合金ZrMn0.7V0.2Co0.1Ni1.2的相结构、相组成以及电化学性能的影响.结果表明,对于合金Zr1-xTix(Mn0.7V0.2Co0.1Ni1.2),其母体合金的主相为C15型Laves相,并含有少量的非Laves相Zr7M10;但随着掺Ti量的增加,合金中出现C14型Laves相,而且其含量逐渐增加;在x=0.1～0.2时,合金中还出现少量的TiNi相,而在x=0.4～0.5时,非Laves相Zr7M10和TiNi相全部消失,说明元素Ti大量的掺杂抑制了第二相的产生;而且随着Ti含量的增加,合金中的C15型和C14型Laves相的晶格常数逐渐减小.电化学测试结果发现,当含Ti量x=0.2时,合金有最大放电容量Cmax为354 mAh/g,在放电电流为300 mAh/g条件下,高倍率放电性能比母体合金提高了15%.
参考文献
| [1] | Ovshinsky S R;Fetcenko M A;Ross J .A Nickel Metal Hydride Battery for Electric Vehicles[J].Science,1993,260:176-181. |
| [2] | Kim DM;Lee J.-Y. --;Jang K.-J. -- .Review on the development of AB sub 2 -type Zr-based Laves phase hydrogen storage alloys for Ni-MH rechargeable batteries in the Korea Advanced Institute of Science and Technology[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1999(0):583-592. |
| [3] | Yang X G;Lei Y Q;Zhang W K et al.Effect of Alloying with Ti,V,Mn on the Electrochemical Properties of Zr-Cr-Ni Based Laves Phase Metal Hydride[J].Journal of Alloys and Compounds,1996,243:151-156. |
| [4] | Bououdina M;Menier P;Soubeyroux J L .0≤x≤0.2,M=Fe,Co,Ni[J].Journal of Alloys and Compounds,1997,253～254:302-307. |
| [5] | Dan Lupu;Alexandru Sorin Biris .Hydrogen absorption and electrode properties of Zr_(1-x)Ti_xV_(1.2)Cr_(0.3)Ni_(1.5) Laves phases[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):302-306. |
| [6] | 文明芬,翟玉春,陈廉,佟敏.ZrTi-V-Mn-Ni系贮氢合金的相结构与电化学性能研究*[J].功能材料,2001(04):379-381. |
| [7] | Lee S-M.;Lee H. .A study on the development of hypo-stoichiometric Zr-based hydrogen storage alloys with ultra-high capacity for anode material of Ni/MH secondary battery[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):259-268. |
| [8] | Sun J C;Zhang Y J;Ji S J;Yu Z W .[J].International Journal of New Materials for Electrochemical Systems,2002,4:31-34. |
| [9] | Lai L.C.;Lee L.C. .Preparation and hydrogenation of multicomponent AB_2-type Zr-Mn-V-Co-Ni amorphous alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):266-271. |
| [10] | 张永俊,于志伟,季世军,许晓磊,孙俊才.HF溶液预处理对ZrCro.7Ni1.3贮氢电极合金电化学性能的影响[J].稀有金属材料与工程,2002(04):270-273. |
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%