Published March 6, 2022 | Version v1
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The role of specific and active surface areas in optimizing hard carbon irreversible capacity loss in sodium ion batteries

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Description

Oxygen physi- and chemisorption were used to determine the hard carbon total specific and active surface areas, respectively, which have been correlated with irreversible capacity loss during the first charge/discharge cycle in Na-ion half-cells. Lowering the specific and active surface areas allow to reduce the irreversible capacity loss to 8%. Carbon basal planes and edge planes/defects contributions are discussed.

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Funding

NAIMA – NA ION MATERIALS AS ESSENTIAL COMPONENTS TO MANUFACTURE ROBUST BATTERY CELLS FOR NON-AUTOMOTIVE APPLICATIONS 875629
European Commission