Daniela Marin
Ph.D. Student in Chemical Engineering, admitted Autumn 2020
Other Tech - Graduate, Stanford Nano Shared Facilities Service Center
Bio
Daniela Marin is a first-year graduate student at Stanford University. She previously worked as a post-undergraduate researcher at the National Renewable Energy Laboratory and worked toward advancing the commercialization of bio-derived materials and methods of plastics recycling. Daniela holds a B.S. in Chemical Engineering and a B.A. in Physics through a dual-degree program with Columbia University and William Jewell College. Her education is combined with undergraduate research that focused on mitigating the effects of viscous fingering using step-growth polymerization to stabilize the instability. Her transition to Columbia introduced her to the field of atmospheric aerosols where she worked with Professor V. Faye McNeill’s group to investigate a photoinduced particle growth process and its role in secondary organic aerosol formation. She is enthusiastic about using her technical abilities and interest in the environment to contribute to Stanford Chemical Engineering's mission of developing technologies that will improve and maintain environmental health.
Education & Certifications
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B.A., William Jewell College, Physics (2019)
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B.S., Columbia University, Chemical Engineering (2019)
All Publications
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Understanding the Effects of Anode Catalyst Conductivity and Loading on Catalyst Layer Utilization and Performance for Anion Exchange Membrane Water Electrolysis.
ACS catalysis
2024; 14 (14): 10806-10819
Abstract
Anion exchange membrane water electrolysis (AEMWE) is a promising technology to produce hydrogen from low-cost, renewable power sources. Recently, the efficiency and durability of AEMWE have improved significantly due to advances in the anion exchange polymers and catalysts. To achieve performances and lifetimes competitive with proton exchange membrane or liquid alkaline electrolyzers, however, improvements in the integration of materials into the membrane electrode assembly (MEA) are needed. In particular, the integration of the oxygen evolution reaction (OER) catalyst, ionomer, and transport layer in the anode catalyst layer has significant impacts on catalyst utilization and voltage losses due to the transport of gases, hydroxide ions, and electrons within the anode. This study investigates the effects of the properties of the OER catalyst and the catalyst layer morphology on performance. Using cross-sectional electron microscopy and in-plane conductivity measurements for four PGM-free catalysts, we determine the catalyst layer thickness, uniformity, and electronic conductivity and further use a transmission line model to relate these properties to the catalyst layer resistance and utilization. We find that increased loading is beneficial for catalysts with high electronic conductivity and uniform catalyst layers, resulting in up to 55% increase in current density at 2 V due to decreased kinetic and catalyst layer resistance losses, while for catalysts with lower conductivity and/or less uniform catalyst layers, there is minimal impact. This work provides important insights into the role of catalyst layer properties beyond intrinsic catalyst activity in AEMWE performance.
View details for DOI 10.1021/acscatal.4c02932
View details for PubMedID 39050897
View details for PubMedCentralID PMC11264204
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Understanding the Effects of Anode Catalyst Conductivity and Loading on Catalyst Layer Utilization and Performance for Anion Exchange Membrane Water Electrolysis
ACS CATALYSIS
2024
View details for DOI 10.1021/acscatal.4c02932
View details for Web of Science ID 001265524300001
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Protocol for assembling and operating bipolar membrane water electrolyzers.
STAR protocols
2023; 4 (4): 102606
Abstract
Renewable energy-driven bipolar membrane water electrolyzers (BPMWEs) are a promising technology for sustainable production of hydrogen from seawater and other impure water sources. Here, we present a protocol for assembling BPMWEs and operating them in a range of water feedstocks, including ultra-pure deionized water and seawater. We describe steps for membrane electrode assembly preparation, electrolyzer assembly, and electrochemical evaluation. For complete details on the use and execution of this protocol, please refer to Marin et al. (2023).1.
View details for DOI 10.1016/j.xpro.2023.102606
View details for PubMedID 37924520
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PolyID: Artificial Intelligence for Discovering Performance-Advantaged and Sustainable Polymers
MACROMOLECULES
2023
View details for DOI 10.1021/acs.macromol.3c00994
View details for Web of Science ID 001092782900001
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Hydrogen production with seawater-resilient bipolar membrane electrolyzers
JOULE
2023; 7 (4): 765-781
View details for DOI 10.1016/j.joule.2023.03.005
View details for Web of Science ID 000988108000001
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Impact of Environmental Conditions on Secondary Organic Aerosol Production from Photosensitized Humic Acid
ENVIRONMENTAL SCIENCE & TECHNOLOGY
2020; 54 (9): 5385–90
Abstract
Recent studies have shown the potential of the photosensitizer chemistry of humic acid, as a proxy for humic-like substances in atmospheric aerosols, to contribute to secondary organic aerosol mass. The mechanism requires particle-phase humic acid to absorb solar radiation and become photoexcited, then directly or indirectly oxidize a volatile organic compound (VOC), resulting in a lower volatility product in the particle phase. We performed experiments in a photochemical chamber, with aerosol-phase humic acid as the photosensitizer and limonene as the VOC. In the presence of 26 ppb limonene and under atmospherically relevant UV-visible irradiation levels, there is no significant change in particle diameter. Calculations show that SOA production via this pathway is highly sensitive to VOC precursor concentrations. Under the assumption that HULIS is equally or less reactive than the humic acid used in these experiments, the results suggest that the photosensitizer chemistry of HULIS in ambient atmospheric aerosols is unlikely to be a significant source of secondary organic aerosol mass.
View details for DOI 10.1021/acs.est.9b07485
View details for Web of Science ID 000530651900013
View details for PubMedID 32243755
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Stabilization of miscible viscous fingering by a step growth polymerization reaction
EXPERIMENTS IN FLUIDS
2018; 59 (7)
View details for DOI 10.1007/s00348-018-2566-4
View details for Web of Science ID 000435612400001
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Design and validation study of a laboratory scale chemical reactor for non-invasive imaging of macro objects in situ
CHEMICAL ENGINEERING JOURNAL
2017; 327: 889–97
View details for DOI 10.1016/j.cej.2017.07.001
View details for Web of Science ID 000408663800091
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Schlieren imaging of viscous fingering in a horizontal Hele-Shaw cell
EXPERIMENTS IN FLUIDS
2016; 57 (2)
View details for DOI 10.1007/s00348-016-2121-0
View details for Web of Science ID 000371055500013