Electrochemical Cells Many oxidation-reduction reactions occur spontaneously, giving off energy.
Membraneless Photo electrochemical cells and reactors left Schematic top view of membraneless electrolyzer based on angled mesh flow through electrodes. More details can be found in publication . As engineers, we are not only intrigued by the fundamental science involved in our research, but also seek to apply that knowledge to the invention, design, optimization, and scale-up of real-world devices and systems.
In this spirit, an important part of research in our lab involves the development of photo electrochemical and PV-electrolysis devices, reactors, and systems.
Evaluation of the performance of integrated devices and systems can be invaluable for gaining an understanding of the complex interplay that often exists between components and is crucial for optimization and scale-up processes.
Of particular interest in our group are novel membraneless PEC and electrochemical reactors, which offer exciting opportunities to decrease capital costs through their simplicity.
Two key aspects of of our device-level research are i Additive manufacturing 3D-printingwhich has proven to be invaluable for accelerating the development of electrochemical and photoelectrochemical test cells and reactors, and ii.
Incorporation of windows and electrochemical sensors into these devices. The former features enable in situ studies of the fluid dynamics and bubble dynamics within these devices using high speed video HSV. These measurements are carried out in close collaboration with electrochemical engineering modeling and CFD experts to validate models and develop design guidelines for these devices.
High speed video of H2 and O2 gas bubble evolution from Platinized Ti mesh operating in 0. Complete details can be found in reference .
Videos taken by Jack Davis. Video formatting credited to a Columbia University press release. Highlighted in a Columbia University press release.
Joule, 1, Chemical Communications, 53, Part of the Emerging Investigators Issue. Special Issue on Solar Fuels. Available for download here. Journal of the Electrochemical Society,FFElectrochemical Cells Electrochemical cells consist of two electrodes: an anode (the electrode at which the oxidation reaction occurs) and a cathode (the electrode at which the reduction reaction occurs).
Electrochemical cells involve the transfer of electrons from one species to another. In these chemical systems, the species that loses electrons is said to be “oxidized” and the species that gain electrons is said to be “reduced”.
An electrochemical cell is composed to two compartments or half-cells, each composed of an electrode dipped in a solution of electrolyte. These half-cells are designed to contain the oxidation half-reaction and reduction half-reaction separately as shown below. In its turn, the electrochemical cell is divided by two groups: voltaic or galvanic cells and electrolytic cells.
Galvanic cells convert a chemical energy to an electrical energy and electrolytic cells do a conversion oppositely. Electrochemical Cells Any chemical reaction involving the transfer of electrons from one substance to another is an oxidation/reduction (redox) reaction.
The substance losing electrons is.
Hard tech innovation takes significant risk, capital, and time. Our program is designed to give innovators the runway, tools, knowledge, and networks they need to turn a promising concept into a transformative product.