Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.013
Publication date: 18th July 2019
This talk will focus on understanding the complete carbon balance on electrochemical CO2 reduction reactors operating at industrial relevant current densities (100-500 mA/cm2). Both a gas diffusion approach with a liquid catholyte as well as a zero gap membrane electrode assembly (MEA) approach will be discussed.
In the MEA approach, a Ag membrane was used as a CO2 reduction cathode and a greater than 95% faradaic efficiency to CO is obtained at 200 mA/cm2 (~ 3.1 V). Insertion of a reference electrode allowed us to roughly attribute losses to either cathode, anode, or the membrane. Gas chromatography of the anode, in addition to the cathode, shows both the faradaic efficiency of oxygen evolution as well as the CO2 crossover across an anion exchange membrane and how this varies as a function of current. The production of formate is analyzed as well as its crossover to the anode.
For the gas diffusion electrode approach, sputtered Cu was used as a cathodic catalyst. As expected, high faradaic efficiencies to ethylene and ethanol were seen as well as other multi-carbon products. CO2 reduction products diffusing through to the anode were analyzed as well as oxygen and CO2. CO2 crossover and oxygen evolution faradaic efficiencies as a function of operating current and other reactor parameters will be discussed. This talk will also demonstrated the role of varying electrolyte pH and how this effects performance from an overall carbon balance standpoint.
This work was funded by both the V-Sustain grant from the Villum Foundation V-SUSTAIN (Grant # 9455) and the ECOEthylene project from Innovation Fund Denmark (Grant # 8057-00018B)
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.