Multi-scan reversible cyclic voltammetry: is the ultimate condition approached and, if so, how fast?

详细信息    查看全文

• 作者：Keith B. Oldham (1)
  
• 关键词：Voltammetry ; Cyclic voltammetry ; Multi ; scan cyclic voltammetry ; Ultimate cyclic voltammetry ; Voltammetric modelling
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2013
• 出版时间：November 2013
• 年：2013
• 卷：17
• 期：11
• 页码：2757-2769
• 全文大小：827KB
• 参考文献：1. Oldham KB (2013) Ultimate cyclic voltammetry: an analytical examination of the reversible case. J Solid State Electrochem. doi:10.1007/s10008-013-2176-2
  2. Bard AJ, Faulkner LR (2001) Electrochemical methods, 2nd edn. Wiley, New York, ch 6
  3. Keightley A, Myland JC, Oldham KB, Symons PG (1992) J Electroanal Chem 322:25鈥?4 CrossRef
  4. Marken F, Neudeck A, Bond AM (2010) In: Scholz F (ed) Electroanalytical methods, 2nd edn. Springer, Heidelberg, p 79
  5. Oldham KB, Myland JC, Bond AM (2012) Electrochemical science and technology. Wiley, Chichester, p 232
  6. Bard AJ, Inzelt G, Scholz F (eds) (2012) Electrochemical dictionary. Springer, Berlin, p 362
  7. Oldham KB, Spanier J (2002) The fractional calculus, Dover, Mineola. Note a typographical error in that a minus sign should attach to the first formula on Page 116, so as to replicate Eq. (15)
  8. Gr眉nwald A (1867) Z Math Phys (Leipzig) 12:441鈥?80
  9. Wolfram S (1999) The mathematica book, 4th edn. Cambridge University Press, Cambridge
  
• 作者单位：Keith B. Oldham (1)
  
  1. Trent University, Peterborough, ON, Canada, K9J 7B8
  
• ISSN：1433-0768

文摘

A previous article shows that, after an infinite number of cycles, reversible cyclic voltammetry will attain an ultimate state characterized by properties that were identified in that study. Here, reversible multi-scan cyclic voltammetry has been modelled with a view to assessing the circumstances under which the ultimate state is attainable in an experimentally realistic time. The prediction has been confirmed that, under very specific conditions, the ultimate condition is attained after only a few scans. Under less restrictive conditions, one property of ultimacy is developed rapidly, but others evolve more slowly, or not at all. Modelling shows that the multi-scan voltammetric current may be analyzed into several components, of which the ultimate current is the purely periodic component.