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An insight into charge/discharge behaviors of lithium/ sodium‐sulfur conversion batteries and their similarity to the lithium/sodium‐ion intercalation batteries: Relation of delivered capacity vs current rate
Author(s) -
Kalantarian Mohammad Mahdi,
TaherTalari Maryam,
YousefiMashhour Hatef
Publication year - 2021
Publication title -
energy storage
Language(s) - English
Resource type - Journals
ISSN - 2578-4862
DOI - 10.1002/est2.200
Subject(s) - cathode , intercalation (chemistry) , lithium (medication) , ion , sodium , inverse , similarity (geometry) , materials science , current (fluid) , analytical chemistry (journal) , chemical engineering , chemistry , inorganic chemistry , electrical engineering , computer science , mathematics , chromatography , engineering , organic chemistry , medicine , geometry , artificial intelligence , image (mathematics) , endocrinology , metallurgy
This paper proposes a mathematic relationship between obtained capacity and the corresponding current rate for the Li‐S and Na‐S conversion batteries. Using experimental data on different conditions of the Li/Na‐S batteries, taken from literature, it is established that the inverse value of obtained capacity is changing linearly with respect to square root of the corresponding applied current rate. The theoretical‐based relationship has been established for the Li‐ion and Na‐ion batteries. Therefore, this paper proposes similar behavior for the conversion and intercalation batteries. The proposed relationship and its beyond approach proffer estimations of: alteration of capacity by rate, optimal cathode mass, corresponding reaction components, and fraction of (in)active particles. Also, they offer a quantitative criterion for performance and rate‐capability, the capability to justify observed phenomena, and also qualification of the powder, preparation, and assembling of the cell.