Laser-Enhanced Electrochemical Performance of an Aluminium–Air Cell with a Gold Cathode in Artificial Tear Electrolyte

Document Type : Original Article

Authors

Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran

10.48308/piadm.2026.242748.1013

Abstract

Smart contact lenses, as an emerging class of wearable devices, require lightweight, safe, and biocompatible power sources capable of operating in the ocular environment. Aluminum–air batteries represent a promising candidate due to their high energy density and favorable biocompatibility, yet their performance in near-neutral conditions remains limited by the sluggish kinetics of the oxygen reduction reaction (ORR). In this work, we experimentally investigate the effect of optical stimulation on the performance of an aluminum–air cell with a gold cathode in artificial tear electrolyte under 532 nm green-laser illumination. Cyclic voltammetry (CV), galvanostatic discharge (GCD), and electrochemical impedance spectroscopy (EIS) were employed to compare the battery behavior in laser-off and laser-on states. The results show that laser illumination significantly enhances the cathodic peak current, increases the discharge capacity by approximately 15%, and reduces the charge-transfer resistance by more than 60%. These concurrent improvements demonstrate that optical stimulation can effectively strengthen cathodic activity and charge-transfer pathways, thereby supporting the development of biocompatible power sources based on aluminum–air systems.

Keywords