A new formula for the faradaic fraction used to estimate the coulombic hysteresis in the charge/discharge profiles of electrochemical energy storage systems
作者： Charles Cougnon
DOI: 10.1016/J.ELECTACTA.2021.137788
关键词: Kinetic energy 、 Hysteresis 、 Capacitor 、 Electrolyte 、 Work (thermodynamics) 、 Energy storage 、 Thermodynamics 、 Range (particle radiation) 、 Electrode 、 Materials science
摘要: Abstract The present work is concerned with the charge hysteresis frequently observed in charge/discharge profiles of electrochemical capacitors (ECs) at full voltage. In energy storage applications, concept operating potential window (OPW), envisioned as which ECs are not deteriorated, a key parameter for addressing problems both life cycle and density, but its determination remains arbitrary nature due to experimental based on kinetic parameters. For ECs, it was proposed define OPW closed gap limited by preset faradaic fraction ends stability ensure that degradation electrode/electrolyte interface commensurate stored double layer. By implication, limits so obtained closely related range covered reach value fraction, initial from evaluated expected have an impact OPW. Here, this source error explored detail voltage-correction make less sensitive potential.
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