One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 1642-81-5, Name is 4-(Chloromethyl)benzoic acid, formurla is C8H7ClO2. In a document, author is Cao, Xiaozhou, introducing its new discovery. Category: chlorides-buliding-blocks.
A Zn-Ce Redox Flow Battery with Ethaline Deep Eutectic Solvent
Compared with conventional aqueous and ionic liquid electrolytes, deep eutectic solvent (DES) are considered as electrolyte for redox flow batteries because they have a wider electrochemical window and relatively low price. In this study, Ce-IV/Ce-III and Zn-II/Zn redox couples are used as the positive and negative active materials, respectively, in an electrolyte consisting of choline chloride ethylene glycol (ethaline). The structure of Ce-III in the positive electrolyte is inferred through spectrum detection. Ce-IV/Ce-III and Zn-II/Zn redox couples show a stable potential difference of 2.2 V (vs. Ag) through cyclic voltammetry. The charge and discharge performance of battery was tested at different current densities. In addition, battery performance was evaluated at different temperatures and concentrations of cerium in the electrolyte. Consequently, at a current density of 0.5 mA cm(-2) at room temperature and using 1.0 m Ce-III, the battery performance reaches the best coulombic efficiency of 84 %.
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