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Crystallized manganese dioxide powders (cryptomelane type α-MnO 2 and birnessite type δ-MnO 2 ) were electrochemically investigated in mild aqueous electrolytes with the cavity microelectrode (CME) technique. Cyclic voltammetry was performed with isolated MnO 2 powder and mixed acetylene black/MnO 2 powder. High electrochemical performance is achieved showing the pseudocapacitive...
In order to better analyze and to explain the electrochemical and physical behavior during both charge and discharge of a manganese dioxide based ECs, an original electrochemical model is developed in this paper. The 1D model is an adaptation of the transmission line model (TLM), taking into account the cation diffusion in the solid oxide. A linear relation between redox potential and oxidation state...
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