Scanning Electrochemical Microscopy. Theory of the Feedback Mode for Hemispherical Ultramicroelectrodes:  Steady-State and Transient Behavior

2000 ◽  
Vol 72 (11) ◽  
pp. 2383-2390 ◽  
Author(s):  
Yoram Selzer ◽  
Daniel Mandler
2013 ◽  
Vol 85 (3) ◽  
pp. 1322-1326 ◽  
Author(s):  
Lianhuan Han ◽  
Ye Yuan ◽  
Jie Zhang ◽  
Xuesen Zhao ◽  
Yongzhi Cao ◽  
...  

2010 ◽  
Vol 114 (13) ◽  
pp. 4442-4450 ◽  
Author(s):  
Kevin R. J. Lovelock ◽  
Frances N. Cowling ◽  
Alasdair W. Taylor ◽  
Peter Licence ◽  
Darren A. Walsh

2018 ◽  
Vol 31 (2) ◽  
pp. 273-281 ◽  
Author(s):  
Timo Raith ◽  
Christian Iffelsberger ◽  
Preety Vatsyayan ◽  
Frank-Michael Matysik

2001 ◽  
Vol 16 (11) ◽  
pp. 2092-2102 ◽  
Author(s):  
Christine E. M. Berger ◽  
Hersha Rathod ◽  
James I. Gillespie ◽  
Benjamin R. Horrocks ◽  
Harish K. Datta

2007 ◽  
Vol 60 (1) ◽  
pp. 29 ◽  
Author(s):  
Maurizio Carano ◽  
Alan M. Bond

Prospects have been assessed for the application of the technique of scanning electrochemical microscopy (SECM) in viscous ionic liquids. Use of the Fc0/+ redox couple (Fc = ferrocene) to obtain microelectrode approach curves revealed that the required steady state behaviour needed for analysis of data relevant to conducting platinum and insulating glass substrates is moderately easy to achieve in a 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) ionic liquid. However, in the more highly viscous 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid, where significantly lower diffusion coefficients are encountered, approach-curve data that conform to steady state theory are only found with very small microelectrodes (e.g., ≤2 μm diameter), very slow electrode–substrate approach rates (e.g., ≤0.05 μm s–1), and long equilibration times (e.g., 50 s). A comparison is provided with SECM approach curves acquired in aqueous media. SECM images of an Ag substrate in contact with [BMIM][BF4] also are presented and are of only slightly inferior quality to images obtained in water.


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