ECS-YS Mini Photoelectrochemical (PEC) reactor (Max. 250°C, 10 MPa) with Magnetic Stirring, EYSMPECRMS

A Mini Photoelectrochemical (PEC) Reactor with Magnetic Stirring is a specialized electrochemical cell designed to study the synergy between light energy and electrical bias. PEC reactors are primarily used for "operando" surface engineering—specifically, using light to catalyze the chemical reactions to realize solar fuel generation. The integration of Magnetic Stirring is a mechanical necessity for PEC work: it ensures high mass transport of ions to the photoelectrode surface and prevents local pH or concentration gradients that can lead to inconsistent "hot spots" during light-induced charging.

A research-grade PEC reactor typically utilizes a "Three-Electrode" configuration housed within a light-tight, optically transparent vessel. (1) Photo-Working Electrode (WE): Usually a semiconductor-coated conductive substrate (e.g., TiO2 on FTO glass). This is where the light-matter interaction occurs. (2) Quartz Window: A high-purity optical port that allows UV-Vis light to reach the electrode without significant absorption or scattering. (3) Magnetic Stirring Base: A low-profile stirrer integrated into the bottom of the cell to keep the electrolyte in constant motion. (4) Reference & Counter Electrodes: Standard Ag/AgCl or Pt wires, essential for the high-precision voltage control required by potentiostats.

References:

F. Liang, et al., Assessing elevated pressure impact on photoelectrochemical water splitting via multiphysics modeling, Nature Communications, 2024, 15, 4944.

A. E. Karaca, et al., New Photoelectrochemical Reactor for Hydrogen Generation: Experimental Investigation, Ind. Eng. Chem. Res. 2022, 61, 34, 12448–12457.