Heterogeneous electron transfer reorganization energy at the inner Helmholtz plane in a polybromide redox-active ionic liquid.

ABSTRACT: In ionic liquids (ILs), the electric double layer (EDL) is where heterogeneous electron transfer (ET) occurs. Nevertheless, the relationship between the EDL structure and its kinetics has been rarely studied, especially for ET taking place in the inner Helmholtz plane (IHP). This is largely because of the lack of an appropriate model system for experiments. In this work, we determined the reorganization energy (λ) of Br₂ reduction in a redox-active IL 1-ethyl-1-methylpyrrolidinium polybromide (MEPBr_2n+1) based on the Marcus-Hush-Chidsey model. Exceptionally fast mass transport of Br₂ in MEPBr_2n+1 allows voltammograms to be obtained in which the current plateau is regulated by electron-transfer kinetics. This enables investiga

SUBMITTER: Kim M 

PROVIDER: S-EPMC9350599 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature