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V1_BatCycleLife_Manuscript.pdf (1.03 MB)

A Transition State Theory-influenced Model of Secondary Battery Cycle-life: Towards a Final Regularity Resembling Carnot-efficiency

preprint
submitted on 18.05.2021, 11:14 and posted on 20.05.2021, 08:47 by Roland Hermann Pawelke
A transition state theory-influenced approach on maximum battery cycle-life is outlined, arriving at an ideal model of general validity. The outcome may be understood further as a thermodynamic final regularity reminiscent of Carnot-efficiency. In contrast to the common perception which attributes in blanket fashion the causality of changes in cycle-life to the engineering of battery-specific tangibles, this model allows for a more differentiated picture: That changes to battery-specific tangibles may yield differences of several hundred or more cycles is here the result of them being enhanced by a comparatively long, natural constant-based, logarithmic lever. That way such changes can cause big differences though being comparatively small to the lever base value, which emerges as a quantity of natural constants, temperature(s) and relative capacity margins but independent of battery specific energy and applied power. These are findings suggesting a revision of the current empirics-biased consensus opinion about the matter.

Funding

European Space Agency grant 4000105330/12/NL/CLP

European Defence Agency grant A-1341-RT-GP

History

Email Address of Submitting Author

roland.pawelke@hushmail.com

Institution

FOTEC Forschungs- und Technologietransfer GmbH

Country

Austria

ORCID For Submitting Author

0000-0002-6944-2240

Declaration of Conflict of Interest

There are no conflicts to declare.

Version Notes

V1: Initial version.