Operando monitoring of ion activities in aqueous batteries with plasmonic fiber-optic sensors.

ABSTRACT: Understanding ion transport kinetics and electrolyte-electrode interactions at electrode surfaces of batteries in operation is essential to determine their performance and state of health. However, it remains a challenging task to capture in real time the details of surface-localized and rapid ion transport at the microscale. To address this, a promising approach based on an optical fiber plasmonic sensor capable of being inserted near the electrode surface of a working battery to monitor its electrochemical kinetics without disturbing its operation is demonstrated using aqueous Zn-ion batteries as an example. The miniature and chemically inert sensor detects perturbations of surface plasmon waves propagating on its surface to rapidly screen localized electrochemical events on a sub-μm-sca

SUBMITTER: Wang R 

PROVIDER: S-EPMC8795113 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature