A5061852175- Fuel Cells and Related Materials
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Advancements in Solid Oxide Fuel Cells
- Advanced Battery Materials and Technologies
- Nanopore and Nanochannel Transport Studies
- Supercapacitor Materials and Fabrication
- Ion-surface interactions and analysis
- Conducting polymers and applications
- Hybrid Renewable Energy Systems
- Membrane-based Ion Separation Techniques
Cornell University
2020-2023
Ithaca College
2021
Hydrogen-derived power is one of the most promising components a fossil fuel-independent future when deployed with green and renewable primary energy sources. Energy from sun, wind, waves/tidal, other emissions-free sources can water electrolyzers (WEs), devices that produce hydrogen without carbon emissions. According to recent International Renewable Agency reports, WEs employed in industry are currently alkaline proton-exchange membrane (PEMWEs), ∼200 ∼70 years commercialization history,...
Anion exchange membrane water electrolyzers (AEMWEs) and fuel cells (AEMFCs) require an anion (AEM) with high hydroxide ion conductivity chemical stability to oxidative alkaline conditions. Herein the conductivities of 17 quaternary ammonium-functionalized polyethylene-based AEMs were measured over time understand influence ammonium functional groups on AEM performance. The piperidinium-based containing a β-methyl in backbone resulted 41 mS/cm at 22 °C highest 95% retention after 30 days 1 M...
Understanding the degradation mechanisms of organic cations under basic conditions is extremely important for development durable alkaline energy conversion devices. Cations are key functional groups in anion exchange membranes (AAEMs), and AAEMs critical components to conduct hydroxide anions fuel cells. Previously, we have established a standard protocol evaluate cation stability within KOH/CD3OH solution at 80 °C. Herein, using compare 26 model compounds, including benzylammonium,...
Piperidinium-functionalized polyethylene-based alkaline anion exchange membranes that show high hydroxide conductivities and good stabilities are easily prepared using photocatalytic hydroamination reactions.
The limited number of methods to directly polymerize ionic monomers currently hinders rapid diversification and production polymeric materials, namely anion exchange membranes (AEMs) which are essential components in emerging alkaline fuel cell electrolyzer technologies. Herein, we report a direct coordination-insertion polymerization cationic monomers, providing the first synthesis aliphatic polymers with high ion incorporations allowing facile access broad range materials. We demonstrate...
Redox flow batteries (RFBs) are a promising solution to grid-scale energy storage that utilize solvated redox-active species store charge. These electrolytes flowed over stationary electrodes during charge and discharge cycling. However, solubilizing the allows for their crossover through separating membrane, causing electrolyte mixing, leads capacity fade battery failure. Herein, we employ series of trimethylammonium-functionalized polyethylene membranes in RFB cells address membrane...
We have studied the solubility, mechanical properties, and mass transport behavior of a series methylpiperidinium-functionalized polyethylene (PEPM) ionomers with different ion-exchange capacities (IECs) for anion-exchange membrane fuel cells (AEMFCs). The influence IEC on ionomer viscoelasticity in water transport/permeability charged uncharged species were investigated by acoustic impedance tests electrochemical measurements, respectively. found that solubility PEPM increased increasing...
Abstract The limited number of methods to directly polymerize ionic monomers currently hinders rapid diversification and production polymeric materials, namely anion exchange membranes (AEMs) which are essential components in emerging alkaline fuel cell electrolyzer technologies. Herein, we report a direct coordination‐insertion polymerization cationic monomers, providing the first synthesis aliphatic polymers with high ion incorporations allowing facile access broad range materials. We...
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