Modelling of current and temperature effects on supercapacitors ageing. Part I: Review of driving phenomenology
نویسندگان
چکیده
The paper proposes a study of the phenomenology driving the ageing mechanisms of electrochemical double layer supercapacitors (SCs) during their most common operating conditions. In particular, the paper focuses on the so-called life endurance (LE) and power cycling (PC) stresses. The paper first provides a description of the variables governing the SC behaviour at the microscopic scale (i.e., porosity of the electrode surface, diffusion and conductivity of the electrolyte). Then, the paper discusses the link between these variables and the ones describing the SC behaviour at the macroscopic scale (i.e., temperature of the electrolyte and delivered current). This analysis is applied to both LE and PC stresses and as well as to their combination. The discussions make reference to experimental results obtained at the Author’s laboratory by means of a dedicated test bench. ã 2015 Published by Elsevier Ltd.
منابع مشابه
Modelling of current and temperature effects on supercapacitors ageing. Part II: State-of-Health assessment
This second part of the paper proposes a model for predicting the State-of-Health (SOH) of electrochemical double layers supercapacitors (SCs) during combined high-pulsed power cycling and high-temperature life endurance stresses. The evolutions of the SC capacitance, CSC, during these specific types of stresses have been discussed in part I and, based on the phenomenological observations we ma...
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