Posibility of using 1-alkoxymethyl-4-(dimethylamine)pyridinium bis(trifluoromethylsulfonyl)imides as Electrolytes for Electrochemical Capacitors

The influence of selected types of ammonium ionic liquid (AIL) additives on corrosion and functional parameters of lead-acid battery positive electrode was examined. AILs with a bisulfate anion used in the experiments were classified as protic, aprotic, monomeric, and polymeric, based on the structure of their cation. Working electrodes consisted of a lead-calcium-tin alloy utilized in the industry for manufacturing current collectors of positive electrodes in lead-acid batteries (LABs). This alloy was used in the first part of the study for the evaluation of corrosion intensity and stability of electrolyte with AIL additives. In the second part, the grid made of the examined alloy was covered with positive active mass, the composition of which was modified by selected AIL. The selection of an appropriate substance was made based on parameters such as corrosion potential, corrosion current, polarization resistance, and hydrogen and oxygen evolution potentials. Techniques such as linear sweep voltammetry, corrosimetry, and electrochemical impedance spectroscopy were used. The conducted measurements revealed that polymeric AIL additive had an exceptionally positive influence on the inhibition of the corrosion process in LAB and electrochemical window of the electrolyte. The influence of this compound on the specific capacity and resistance of the active mass was also discussed.

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Electrochemical properties of positive electrode in lead-acid battery modified by ammonium-based ionic liquids

Gabryelczyk

Kopczyński

Baraniak

et al. 2017

J Solid State Electrochem

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The Effect of the Substituent Length in Protic Ionic Liquid Additive on the Corrosion Process in the Lead−Acid Battery

Kopczyński¹

2018

International Journal of Electrochemical Science

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Modern automotive industry still relies on the lead-acid batteries as a power supply for starting, lighting and ignition applications. In order to provide efficient devices, manufacturers should control the quality and electrochemical properties of the product. One of the disadvantages of the lead−acid batteries is the corrosion process of the current collectors in the lead−acid batteries. In the presented work, an investigation of the influence of the protic ionic liquids on the corrosion process and gas evolution in the lead alloy/sulfuric acid electrochemical system has been conducted. The aim was to correlate the substituent length in the ionic liquid cation with the electrochemical window of the modified electrolytes and corrosion behavior of the lead alloy. Five new compounds were synthesized and their properties as ionic liquids were confirmed using thermogravimetric analysis and differential scanning calorimetry. The techniques used during the electrochemical experiments include linear sweep voltammetry and electrochemical impedance spectroscopy. The obtained results revealed that the electrochemical stability of the electrolytes increases with the length of the substituent. Satisfactory change was observed also in the corrosion behavior of the modified systems.

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Posibility of using 1-alkoxymethyl-4-(dimethylamine)pyridinium bis(trifluoromethylsulfonyl)imides as Electrolytes for Electrochemical Capacitors

Cited by 2 publications

References 22 publications

Electrochemical properties of positive electrode in lead-acid battery modified by ammonium-based ionic liquids

Electrochemical properties of positive electrode in lead-acid battery modified by ammonium-based ionic liquids

The Effect of the Substituent Length in Protic Ionic Liquid Additive on the Corrosion Process in the Lead−Acid Battery

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