采用机械球磨法制备LaNi5-CNTs复合储氢材料,并制备AAl400 mAh电池.通过扫描电子显微镜(SEM)、X射线衍射(XRD)以及交流阻抗手段对复合材料进行表征,并对复合材料电池进行充放电性能测试.结果表明:复合材料具有CaCu5结构,表面键合了众多的CNTs;碳纳米管的添加使得电极反应电阻减小,合金的表面催化活性增强,交换电流密度增大,微分电容降低,提高了电极高频放电性能,同时使得电极过程中电极表面过程状态变量增加.AA1400 mAh电池1 C容量达到了1493 mAh,高倍率2.3、5 C放电容量达1415、1380 mAh,比LaNi5母合金电池容量分别高出3.4%、6%、7%.
参考文献
| [1] | Andreas Z J .[J].Naturwissenschaften,2004,91:57. |
| [2] | Lu J;Tu J P;Zhang W K et al.[J].Journal of Power Sources,2004,132:282. |
| [3] | Zhang z L;Sun D S .[J].Journal of Alloys and Compounds,1998,270:L7. |
| [4] | LIU Kai-yu;ZHANG Ping-min;TANG You-gen .Preparation of low cobalt high rate discharge hydrogen storage alloy MlNi_(3.85)Co_(0.45)Mn_(0.4)Al_(0.3)X_(0.1) (X= Mg, Si, Sn)[J].Transactions of Nonferrous Metals Society of China,2003(2):245-248. |
| [5] | 刘开宇,张伟,苏耿,张莹.球磨时间对LaNi5-CNTs复合材料的影响[J].电池,2006(03):208-209. |
| [6] | Lenain C.;Salverdisma F.;Leriche JB.;Chabre Y.;Tarascon JM.;Aymard L. .ELECTROCHEMICAL PROPERTIES OF AB(5)-TYPE HYDRIDE-FORMING COMPOUNDS PREPARED BY MECHANICAL ALLOYING[J].Solid state ionics,1997(3/4):237-248. |
| [7] | 1wakura C;Inoue H.[J].Journal of Alloys and Compounds,1999(293-295):653. |
| [8] | Pierard N.;Konya Z.;Willems I.;Van Tendeloo G.;Nagy JB.;Fonseca A. .Production of short carbon nanotubes with open tips by ball milling[J].Chemical Physics Letters,2001(1/2):1-8. |
| [9] | Hu, CG;Wang, WL;Liao, KJ;Liu, GB;Wang, YT .Systematic investigation on the properties of carbon nanotube electrodes with different chemical treatments[J].The journal of physics and chemistry of solids,2004(10):1731-1736. |
| [10] | 尹树峰,李全安,文九巴,张荥渊,张清.MH-Ni电池的发展与展望[J].有色金属,2004(02):52-55. |
| [11] | Zhou Z Q;Lin G w;Zhang J L.[J].Journal of Alloys and Compounds,1999(293-295):795. |
| [12] | Pierard N.;Konya Z.;Willems I.;Van Tendeloo G.;Nagy JB.;Fonseca A. .Production of short carbon nanotubes with open tips by ball milling[J].Chemical Physics Letters,2001(1/2):1-8. |
| [13] | 黄辉,张文魁,甘永平,涂江平,张孝彬.CNTs添加对MmMn0.4Co0.7Al0.3Ni3.4贮氢合金负极性能的影响[J].无机材料学报,2005(05):1139-1144. |
| [14] | Yang H B;Zhang Y S;Zhou z X et al.[J].Journal of Alloys and Compounds,1995,231:625. |
| [15] | Miller J R;Burke A F.Electric Vehicle Capacitor Test Procedures Manual Revision D[M].California:Institute of Transportation Studies Universitu of California,1994 |
| [16] | 曹楚南;张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:86. |
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