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Updated: Jan 20, 2026
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Preparation, Characterization and Intermediate-Temperature Electrochemical Properties of Er3+-Doped Barium
Fufang Wu1, Ruifeng Du2, Tianhui Hu2
1Anhui Provincial Key Laboratory for Degradation and Monitoring of Pollution of the Environment, School of Chemical and Material Engineering, Fuyang Normal University, Fuyang 236037, China. wff05001@fync.edu.cn.
Abstract:
In this study, BaCe0.9Er0.1O3-α was synthesized by a microemulsion method. Then, a BaCe0.9Er0.1O3-α-K2SO4-BaSO4 composite electrolyte was obtained by compounding it with a K2SO4-Li2SO4 solid solution. BaCe0.9Er0.1O3-α and BaCe0.9Er0.1O3-α-K2SO4-BaSO4 were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectrometry. AC impedance spectroscopy was measured in a nitrogen atmosphere at 400-700 °C. The logσ~log (pO) curves and fuel cell performances of BaCe0.9Er0.1O3-α and BaCe0.9Er0.1O3-α-K2SO4-BaSO4 were tested at 700 °C. The maximum output power density of BaCe0.9Er0.1O3-α-K2SO4-BaSO4 was 115.9 mW·cm-2 at 700 °C, which is ten times higher than that of BaCe0.9Er0.1O3-α.
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Electrochemistry is a branch of chemistry that describes and measures the relationship between electrical energy and a chemical change. Electrochemical reactions involve the movement of electrons from one species to another. If the reaction is spontaneous, it can result in a generated current. If the reaction is not spontaneous, it can be driven by the application of current.
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