A5048458426- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Graphene research and applications
- Advancements in Solid Oxide Fuel Cells
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Ionic liquids properties and applications
- Conducting polymers and applications
- Machine Learning in Materials Science
- Target Tracking and Data Fusion in Sensor Networks
- Advanced Photocatalysis Techniques
- RNA Interference and Gene Delivery
- Advanced Measurement and Detection Methods
- Polymer Nanocomposites and Properties
- Catalysis and Hydrodesulfurization Studies
- Cryospheric studies and observations
- Bee Products Chemical Analysis
- Electron and X-Ray Spectroscopy Techniques
Los Alamos National Laboratory
2020-2025
University at Buffalo, State University of New York
2014-2022
Buffalo BioLabs
2015-2019
State University of New York
2015-2019
PLA Electronic Engineering Institute
2013-2017
Guangxi Medical University
2012-2015
First Affiliated Hospital of GuangXi Medical University
2013-2015
Buffalo State University
2014
Sichuan University
2012-2013
It remains a grand challenge to replace platinum group metal (PGM) catalysts with earth-abundant materials for the oxygen reduction reaction (ORR) in acidic media, which is crucial large-scale deployment of proton exchange membrane fuel cells (PEMFCs). Here, we report high-performance atomic Fe catalyst derived from chemically Fe-doped zeolitic imidazolate frameworks (ZIFs) by directly bonding ions ligands within 3D frameworks. Although ZIF was identified as promising precursor, new...
Due to the Fenton reaction, presence of Fe and peroxide in electrodes generates free radicals causing serious degradation organic ionomer membrane. Pt-free Fe-free cathode catalysts therefore are urgently needed for durable inexpensive proton exchange membrane fuel cells (PEMFCs). Herein, a high-performance nitrogen-coordinated single Co atom catalyst is derived from Co-doped metal-organic frameworks (MOFs) through one-step thermal activation. Aberration-corrected electron microscopy...
Platinum group metal-free (PGM-free) catalysts for the oxygen reduction reaction (ORR) with atomically dispersed FeN<sub>4</sub> sites have emerged as a potential replacement low-PGM in acidic polymer electrolyte fuel cells (PEFCs).
Abstract FeN 4 moieties embedded in partially graphitized carbon are the most efficient platinum group metal free active sites for oxygen reduction reaction acidic proton‐exchange membrane fuel cells. However, their formation mechanisms have remained elusive decades because Fe−N bond process always convolutes with uncontrolled carbonization and nitrogen doping during high‐temperature treatment. Here, we elucidate site through hosting Fe ions into a nitrogen‐doped followed by controlled...
Herein, we report the exploration of understanding reactivity and structure atomically dispersed M–N4 (M = Fe Co) sites for CO2 reduction reaction (CO2RR). Nitrogen coordinated or Co site into carbons (M–N–C) containing bulk- edge-hosted coordination were prepared by using Fe- Co-doped metal–organic framework precursors, respectively, which further studied as ideal model catalysts. is intrinsically more active than in to CO, terms a larger current density higher CO Faradaic efficiency (FE)...
Highly ordered Pt alloy structures are proven effective to improve their catalytic activity and stability for the oxygen reduction reaction (ORR) proton exchange membrane fuel cells. Here, we report a new approach preparing Pt3Co intermetallic nanoparticles through facile thermal treatment of supported on Co-doped metal-organic-framework (MOF)-derived carbon. In particular, atomically dispersed Co sites, which originally embedded into MOF-derived carbon, diffuse nanocrystals form structures....
Abstract Ammonia (NH 3 ) is one of the essential chemicals as a fertilizer and starting reagent for various with production expectation 200 million tonnes 2018. With development renewable energy technologies such hydrogen fuel cells, also has emerged an innovative clean source. suitable carrier since molecule ammonia can carry up to three atoms hydrogen. Recently, photochemical synthesis via nitrogen reduction gained considerable attention sustainable method ammonia. The performance...
Direct methanol fuel cells (DMFCs) hold great promise for applications ranging from portable power electronics to transportation. However, apart the high costs, current Pt‐based cathodes in DMFCs suffer significantly performance loss due severe crossover anode cathode. The migrated tends contaminate Pt active sites through yielding a mixed potential region resulting oxygen reduction reaction and oxidation reaction. Therefore, highly methanol‐tolerant must be developed before DMFC...
Low cost and high-performing platinum group metal-free (PGM-free) cathodes have the potential to transform economics of polymer electrolyte fuel cell (PEFC) commercialization. Significant advancements been made recently in terms PGM-free catalyst activity stability. However, before catalysts become viable PEFCs, several technical challenges must be addressed including cathode's fabrication, ionomer integration, transport losses. Here, we present an integrated optimization cathode performance...
Active sites of single-atom nickel catalysts for CO<sub>2</sub> reduction were revealed to be edge-located Ni–N<sub>2+2</sub> with dangling bond-containing carbon atoms, which facilitate the dissociation C–O bond *COOH intermediate.
Abstract The atomic dispersion of nickel in Ni‐N‐C catalysts is key for the selective generation carbon monoxide through electrochemical dioxide reduction reaction (CO 2 RR). Herein, study reports a highly selective, atomically dispersed Ni 1.0% ‐N‐C catalyst with reduced loading compared to previous reports. Extensive materials characterization fails detect crystalline phases, reveals highest concentration metal, and confirms presence proposed Ni‐N x active site at this loading. shows...
Functionalized 3D nanographenes with controlled electronic properties have been synthesized through a multistep organic synthesis method and are further used as promising anode materials for lithium-ion batteries, exhibiting much increased capacity (up to 950 mAh g-1 ), three times higher than that of the graphite (372 ).
Abstract FeN 4 moieties embedded in partially graphitized carbon are the most efficient platinum group metal free active sites for oxygen reduction reaction acidic proton‐exchange membrane fuel cells. However, their formation mechanisms have remained elusive decades because Fe−N bond process always convolutes with uncontrolled carbonization and nitrogen doping during high‐temperature treatment. Here, we elucidate site through hosting Fe ions into a nitrogen‐doped followed by controlled...