Batteries Catalysts Coatings Corrosion SECCM SMCM

Holiday reading

While spending some time outside the lab to recover and enjoy the holiday season, why not have some reading material at hand?

We collected some recent articles on scanning micropipette techniques which are gaining increasing popularity at the moment.

With scanning micropipette techniques, the local electrochemistry of your sample can be studied. A micropipette is filled with electrolyte to form a small droplet at the opening. This droplet is brought into contact with the sample and forms a miniaturized electrochemical cell. This way, common bulk electrochemical experiments can be performed on the micron scale with spatial resolution. Polpular applications are the study of corrosion, coatings, battery materials and (photo)catalysts.

These scanning techniques are commonly called either scanning electrochemical cell microscopy (SECCM) or scanning micropipette contact method (SMCM) and might employ either double-barrel or single barrel micropipettes. If the micropipette is not scanned in a regular pattern, but rather moved to specific spots to collect local data, the technique is also just called micropipette contact method.


Gateman, S.M., Halimi, I., Costa Nascimento, A.R. et al., Using macro and micro electrochemical methods to understand the corrosion behavior of stainless steel thermal spray coatings. npj Mater Degrad 2019, 3, 25. (https://www.nature.com/articles/s41529-019-0087-0)

M. Dayeh, M. R. Z. Ghavidel, J. Mauzeroll, S. B. Schougaard, Micropipette Contact Method to Investigate High‐Energy Cathode Materials by using an Ionic Liquid, ChemElectroChem 2019, 6, 195. (https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201800750)

N. A. Payne, J. Mauzeroll, Identifying Nanoscale Pinhole Defects in Nitroaryl Layers with Scanning Electrochemical Cell Microscopy, ChemElectroChem 2019, 6, 5439. (https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201901394)

Beugré, R.; Dorval, A.; Lizotte Lavallée, L.; Jafari, M.; Byers, J.C., Local electrochemistry of nickel (oxy)hydroxide material gradients prepared using bipolar electrodeposition, Electrochimica Acta 2019, 319, 331-338. (https://www.sciencedirect.com/science/article/pii/S0013468619312861)

We wish you a successful end of the year and a good start into the next one!

Batteries SMCM

Scanning Micropipette Contact Method for Battery Research

Battery materials often consist of multi-component composites which are not homogeneous. To study the intrinsic properties of active components is very challenging for conventional electrochemical techniques.

Recently, the Mauzeroll lab investigated single particle aggregates of lithium iron phosphate by scanning micropipette contact method (SMCM). To extend the potential window they used the ionic liquid EMI TFSI. The technique proofed to yield reproducible results and the redox activity of single lithium iron phosphate particles could be measured.

Measuring currents on single particle aggregates down to the lower pA range is no problem for HEKA’s potentiostats and full software implementation makes it very easy to conduct SMCM experiments with ElProScan.

SMCM of lithium iron phosphate particle in ionic liquid with HEKA ElProScan

Read the paper: https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201800750