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Batteries, Vol. 7, Pages 38: A Comparison of Lithium-Ion Cell Performance across Three Different Cell Formats

Posted on June 8, 2021

Batteries, Vol. 7, Pages 37: A Comparison of Lithium-Ion Cellular Performance across Three Different Cell Formats

Electric batteries doi: 10. 3390/batteries7020038

Authors: Elegance Bridgewater Matthew J. Capener James Brandon Michael L. Lain Mark Copley Emma Kendrick

To investigate the influence of cellular formats throughout a cell growth programme, lithium-ion cells have been prepared in 3 different formats. Coin cells, single layer pouch cellular material, and stacked pouch cellular material gave a range associated with scales of almost three orders of magnitude. The particular cells used same electrode coatings, electrolyte and separator. The performance of the particular different formats was in comparison in long term bicycling tests and in dimensions of resistance and discharge capacities at different rates. Some test results had been common to any or all three formats. However, the stacked sack cells had higher discharge capacities at higher rates. During cycling tests, generally there were indications of variations in the predominant degradation mechanism between the stacked cells and the various other two cell formats. The particular stacked cells showed quicker resistance increases, whereas the particular coin cells showed quicker capacity loss. The difference in degradation mechanism may be linked to the different thermal and mechanical environments in the three cellular formats. The correlation within the electrochemical performance between coin cells, single level pouch cells, and piled pouch cells shows that advancements within a single cell format are likely to lead to improvements throughout all cell formats.

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