Simultaneous Spatial and Temporal Measurements of the Current Distribution in a Miniature Hull Cell
Author(s)Allanore, Antoine; Chmielowiec, Brian John; Cai, Truong H.
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Experimental validation of the current distribution for actual cell geometries is an important complement to modeling. In this work, the combination of a segmented electrode in a miniaturized Hull Cell with a synchronous monitoring of the current response in each segment is proposed as a novel experimental set-up. The high frequency monitoring of the current response to potential steps is investigated as a mean to access the temporal and spatial evolution of current distribution. The corresponding primary current distribution was measured using a ferricyanide/ferrocyanide alkaline electrolyte, confirming the prediction from Laplace's equation. In addition, the experimental set-up allowed the identification of the transition time from primary to tertiary current distribution regimes.
DepartmentMassachusetts Institute of Technology. Department of Chemical Engineering; Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal of The Electrochemical Society
Chmielowiec, Brian, Truong Cai, and Antoine Allanore. “Simultaneous Spatial and Temporal Measurements of the Current Distribution in a Miniature Hull Cell.” J. Electrochem. Soc. 163, no. 5 (2016): E142–E146.
Final published version