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sscc589
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 913.1
- Ìû×Ó: 245
- ÔÚÏß: 56.2Сʱ
- ³æºÅ: 478006
- ×¢²á: 2007-12-14
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÖÆ±¸¿ÆÑ§Óë¿çѧ
8Â¥2009-09-24 14:07:28
wksduedu
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- ÔÚÏß: 157.1Сʱ
- ³æºÅ: 578834
- ×¢²á: 2008-07-04
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sscc589(½ð±Ò+2,VIP+0):ллŶ 9-24 09:16
sscc589(½ð±Ò+2,VIP+0):ллŶ 9-24 09:16
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3Â¥2009-09-23 19:46:57
qumeili
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- ³æºÅ: 846925
- ×¢²á: 2009-09-13
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4Â¥2009-09-23 20:34:00
sscc589
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
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- Ìû×Ó: 245
- ÔÚÏß: 56.2Сʱ
- ³æºÅ: 478006
- ×¢²á: 2007-12-14
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÖÆ±¸¿ÆÑ§Óë¿çѧ
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лл¥Éϸ÷λµÄ°ïæ ÇëÎÊÂ¥ÉϵÄʽµçλÊDz»ÊDZê×¼µç¼«µçλ?ÎÒ°ÑÏà¹ØÎÄÏ×Ìù³öÀ´,ÇëÂ¥Éϸ÷λ°ïÎÒ¿´¿´ Cyclic voltammetry (CV) of AgClO4 was examined in CH3CN + 0.1 M LiClO4, with GC as working electrode and a silver wire directly immersed in the electrolytic solution as reference electrode. Fig. 1 shows two successive cyclic voltammograms, displaying the characteristic features of diffusion-controlled electrodeposition in the cathodic branch and stripping of the metal from the electrode surface in the anodic branch. The reduction peak in scan 2 is positively shifted with respect to the first scan. If we define the nucleation overpotential, gdep, as the difference between a potential corresponding to the foot of the reduction wave (inset of Fig. 1) and the equilibrium potential, i.e., E = 0 V vs AgjAg+, the jgdepj for the first and second scans are 126 and 42 mV, respectively. Equilibrating the electrode at the turning potential (0.5 V in Fig. 1) strongly influences the nucleation overpotential for silver. |
5Â¥2009-09-24 09:13:31














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