采用电沉积技术制备几种电沉积式锌电极,考察镀液中KOH浓度和沉积电流密度对所制得镀锌层的微观形貌与性能的影响规律.结果表明:镀锌层的枝晶随着KOH浓度(250～400 g/L)的增加而变得粗大,且其析氢量、腐蚀电位和腐蚀电流密度均呈现先减小而后增加的趋势;随着电流密度(25～100 mA/cm2)的增长,镀锌层由块状结晶向枝晶转变,相应地电极反应活性随之增大,而耐蚀性则随之变差,并发现沉积电流密度为75 mA/cm2时,锌电极的综合性能最好,以200 mA/g充放电循环10周次,其放电容量仍可达504 mA-h/g.解释了主要工艺参数对结晶形态及电极性能影响的原因,并说明适当的KOH浓度和沉积电流密度有利于提高电极的综合性能.
参考文献
| [1] | Hariprakash B;Martha S K;Shukla A K .Galvanostatic non-destructive characterization of alkaline silver-zinc cells[J].Journal of Power Sources,2003,117:242-248. |
| [2] | Iwakura C;Murakami H;Nohara S;Furukawa N Inoue H .Charge-discharge characteristics of nickel/zinc battery with polymer hydrogel electrolyte[J].Journal of Power Sources,2005,152:291-294. |
| [3] | Lee C W;Sathiyanarayanan K;Eom S W;Yun M S .Novel alloys improve the electrochemical behavior of zinc anodes for zinc/air battery[J].Journal of Power Sources,2006,160:1436-1441. |
| [4] | Espinosa D C R;Bernardes A M;Tenório J A S .An overview on the current processes for the recycling of batteries[J].Journal of Power Sources,2004,135:311-319. |
| [5] | Shunji W;Tsugio S;Hideo S .Alkaline battery without mercury and electronic apparatus powered thereby[P].US 6723469,2004. |
| [6] | Martin G. Perez;Edward A. Kenik;Matthew J. O'Keefe;F. Scott Miller;Benedict Johnson .Identification of phases in zinc alloy powders using electron backscatter diffraction[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):239-250. |
| [7] | YANG Han-xi;CAO Yu-liang;AI Xin-ping;XIAO Li-fen .Improved discharge capacity and suppressed surface passivation of zinc anode in dilute alkaline solution using surfactant additives[J].Journal of Power Sources,2004,128:97-101. |
| [8] | 张春,王建明,张昭,张鉴清,曹楚南.钙添加剂对可充锌电极性能的影响[J].中国有色金属学报,2001(05):780-784. |
| [9] | Zheng Y.;Wang JM.;Chen H.;Zhang JQ.;Cao CN. .Effects of barium on the performance of secondary alkaline zinc electrode[J].Materials Chemistry and Physics,2004(1):99-106. |
| [10] | 陈军;陶占良;苟兴龙.化学电源--原理、技术与应用[M].北京:化学工业出版社,2006:104-112. |
| [11] | 冯绍彬,包祥,刘清,魏辉强,潘军.电沉积锌合金电极的制备及其性能[J].电源技术,2006(10):822-825. |
| [12] | 陈雪梅,刘春,裴东,景义军.电沉积锌电极的性能[J].电源技术,2005(12):816-818. |
| [13] | 朱立群,潘波.电沉积结晶形态研究进展[J].材料保护,2004(09):30-32. |
| [14] | 朱立群.功能膜层的电沉积理论与技术[M].北京:北京航空航天大学出版社,2005:21-42. |
| [15] | 朱晓东,李宁,黎德育,刘伟华,李伟.高速电镀锌工艺对镀层粗糙度及微观形貌的影响[J].中国有色金属学报,2005(01):145-151. |
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%