Different Reactions Define the Electrochemical Window in 1-Butyl-3-Methylimidazolium Triflate on Gold and Platinum Electrodes.

ABSTRACT: Ionic liquids (IL) make excellent candidates for many energy storage devices due to unique and tunable properties such as a large electrochemical window (ECW). Water as an impurity in 1-butyl-3-methylimidazolium (BMIM) triflate is investigated on platinum and gold electrodes in a stagnant glass cell and in a flow-cell coupled to a differential electrochemical mass spectrometer (DEMS). It is found that the ECW closes with increasing water content on both gold and platinum electrodes in both setups. Platinum has a smaller ECW than gold, where the difference mainly stems from the limiting reduction reaction, as identified based on DEMS. Below 1.11 M_H2O/L_IL, the anodic reaction is predominantly IL decomposition and above the oxygen evolution reaction for both materials. T

SUBMITTER: Stender FJ 

PROVIDER: S-EPMC12677712 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature