Search Results - "Choi, Ja‐Yeon"

Integrating PGM‐Free Catalysts into Catalyst Layers and Proton Exchange Membrane Fuel Cell Devices by Banham, Dustin, Choi, Ja‐Yeon, Kishimoto, Takeaki, Ye, Siyu

“…While proton exchange membrane fuel cells (PEMFCs) continue to expand into commercial markets, there is still pressure to decrease cost. One of the largest…”
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In Situ Polymer Graphenization Ingrained with Nanoporosity in a Nitrogenous Electrocatalyst Boosting the Performance of Polymer‐Electrolyte‐Membrane Fuel Cells by Fu, Xiaogang, Zamani, Pouyan, Choi, Ja‐Yeon, Hassan, Fathy M., Jiang, Gaopeng, Higgins, Drew C., Zhang, Yining, Hoque, Md Ariful, Chen, Zhongwei

“…Rich, porous graphene frameworks decorated with uniformly dispersed active sites are prepared by using polyaniline as a graphene precursor and introducing…”
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Advanced Extremely Durable 3D Bifunctional Air Electrodes for Rechargeable Zinc-Air Batteries by Lee, Dong Un, Choi, Ja-Yeon, Feng, Kun, Park, Hey Woong, Chen, Zhongwei

“…A very practical, 3D air electrode architecture based on a bifunctional cobalt oxide nanowire array that is active towards both the oxygen reduction and oxygen…”
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Development and Simulation of Sulfur-doped Graphene Supported Platinum with Exemplary Stability and Activity Towards Oxygen Reduction by Higgins, Drew, Hoque, Md Ariful, Seo, Min Ho, Wang, Rongyue, Hassan, Fathy, Choi, Ja-Yeon, Pritzker, Mark, Yu, Aiping, Zhang, Jiujun, Chen, Zhongwei

“…Sulfur‐doped graphene (SG) is prepared by a thermal shock/quench anneal process and investigated as a unique Pt nanoparticle support (Pt/SG) for the oxygen…”
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Co–N Decorated Hierarchically Porous Graphene Aerogel for Efficient Oxygen Reduction Reaction in Acid by Fu, Xiaogang, Choi, Ja-Yeon, Zamani, Pouyan, Jiang, Gaopeng, Hoque, Md. Ariful, Hassan, Fathy Mohamed, Chen, Zhongwei

“…Nitrogen-functionalized graphene materials have been demonstrated as promising electrocatalyst for the oxygen reduction reaction (ORR), owning to their…”
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Multigrain Platinum Nanowires Consisting of Oriented Nanoparticles Anchored on Sulfur-Doped Graphene as a Highly Active and Durable Oxygen Reduction Electrocatalyst by Hoque, Md Ariful, Hassan, Fathy M., Higgins, Drew, Choi, Ja-Yeon, Pritzker, Mark, Knights, Shanna, Ye, Siyu, Chen, Zhongwei

“…Direct growth of multigrain platinum nanowires on sulfur‐doped graphene (PtNW/SG) is reported. The growth mechanism, including Pt nanoparticle nucleation on…”
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Highly Active Porous Carbon-Supported Nonprecious Metal−N Electrocatalyst for Oxygen Reduction Reaction in PEM Fuel Cells by Choi, Ja-Yeon, Hsu, Ryan S, Chen, Zhongwei

“…As an alternative for platinum to reduce the cost, nonprecious catalysts for the oxygen reduction reaction (ORR) were synthesized by deposition of an Fe/Co−N x…”
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Determination of Iron Active Sites in Pyrolyzed Iron-Based Catalysts for the Oxygen Reduction Reaction by Li, Wenmu, Wu, Jason, Higgins, Drew C, Choi, Ja-Yeon, Chen, Zhongwei

“…Fe-based oxygen reduction reaction (ORR) catalyst materials are considered promising nonprecious alternatives to traditional platinum-based catalysts. These…”
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Morphologically controlled Co3O4 nanodisks as practical bi-functional catalyst for rechargeable zinc–air battery applications by Lee, Dong Un, Scott, Jordan, Park, Hey Woong, Abureden, Salah, Choi, Ja-Yeon, Chen, Zhongwei

“…The morphological control of Co3O4 by polyvinylpyrrolidone during precipitation reaction has resulted in the formation of two-dimensional nanodisks with…”
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Sex-Mediated Differences in TNF Signaling- and ECM-Related Gene Expression in Aged Rat Kidney by Noh, Sang Gyun, Jung, Hee Jin, Kim, Seungwoo, Arulkumar, Radha, Chung, Ki Wung, Park, Daeui, Choi, Yeon Ja, Chung, Hae Young

“…Aging leads to the functional decline of an organism, which is associated with age and sex. To understand the functional change of kidneys depending on age and…”
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eSGA: E. coli synthetic genetic array analysis by Phanse, Sadhna, Bohdana, Fedyshyn, Li, Joyce, Mori, Hirotada, Greenblatt, Jack F, Wasniewski, Jas, Caron, Simone, Venn, Pascal, Laigle, Ludovic, Díaz-Mejía, J Javier, Sheikh, Bilal, Sourour, Natalie, Babu, Mohan, Emili, Andrew, Nazarians-Armavil, Anaies, Choi, Ja-Yeon, Ding, Huiming, Datsenko, Kirill A, Ali, Mehrab, Andrews, Brenda J, Butland, Gareth, Boone, Charles, Yang, Wenhong, Safavi-Naini, Anahita, Lo, Henry, Gold, Barbara, Christopoulos, Constantine, Gagarinova, Alla G, Moreno-Hagelsieb, Gabriel, Deshpande, Avnish, Yamamoto, Natsuko, Wanner, Barry L, Joe, Sarah, Pogoutse, Oxana

“…An array-based high-throughput approach termed Escherichia coli synthetic genetic array, or eSGA, now allows comprehensive genetic interaction screens in…”
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(Z)-2-(Benzo[d]thiazol-2-ylamino)-5-(substituted benzylidene)thiazol-4(5H)-one Derivatives as Novel Tyrosinase Inhibitors by Kang, Kyeong Ha, Lee, Bonggi, Son, Sujin, Yun, Hwi Young, Moon, Kyoung Mi, Jeong, Hyoung Oh, Kim, Dae Hyun, Lee, Eun Kyeong, Choi, Yeon Ja, Kim, Do Hyun, Chun, Pusoon, Moon, Hyung Ryong, Chung, Hae Young

“…Inhibiting tyrosinase is an important goal to prevent melanin accumulation in skin and thereby to inhibit pigmentation disorders. Therefore, tyrosinase…”
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SiO2-Fe/N/C catalyst with enhanced mass transport in PEM fuel cells by Yang, Xiaohua, Wang, Yucheng, Zhang, Gaixia, Du, Lei, Yang, Lijun, Markiewicz, Matthew, Choi, Ja-yeon, Chenitz, Régis, Sun, Shuhui

“…[Display omitted] •A novel hybrid SiO2-Fe/N/C catalyst is designed for the cathode of PEMFCs.•SiO2 facilitates the formation of pyridinic-N and defects in the…”
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Shedding Light on the Effects of Calorie Restriction and its Mimetics on Skin Biology by Choi, Yeon Ja

“…During the aging process of an organism, the skin gradually loses its structural and functional characteristics. The skin becomes more fragile and vulnerable…”
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Graphene-Based Flexible Supercapacitors: Pulse-Electropolymerization of Polypyrrole on Free-Standing Graphene Films by Davies, Aaron, Audette, Philippe, Farrow, Blake, Hassan, Fathy, Chen, Zhongwei, Choi, Ja-Yeon, Yu, Aiping

“…A simple method has been implemented to create flexible, uniform graphene–polypyrrole composite films using a pulsed electropolymerization technique for…”
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Toward practical applications in proton exchange membrane fuel cells with gram-scale PGM-free catalysts by Zhang, Jing, Xu, Pan, Mao, Zhiyu, Gao, Xuehui, Marquez, Emil, Choi, Ja-Yeon, Chen, Zhongwei

“…Platinum has been considered as an essential element in both the cathode and anode catalyst in Proton Exchange Membrane Fuel Cells (PEMFC). However, with the…”
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Pitfalls of a commonly used accelerated stress test for reversal tolerance testing of proton exchange membrane fuel cell anode layers by Peng, Ye, Choi, Ja-Yeon, Bai, Kyoung, Tian, Liliang, Pei, Katie, Zhang, Yi, Banham, Dustin

“…Anode reversal occurs in proton exchange membrane fuel cells (PEMFCs) when one or several membrane electrode assemblies (MEAs) in a stack experience global…”
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Understanding the impact of fuel cell anode layer thickness and layer design on reversal tolerance by Peng, Ye, Choi, Ja-Yeon, Bai, Kyoung, Tian, Liliang, Liao, Shijun, Zhang, Yi, Chen, Dongchu, Banham, Dustin

“…Membrane electrode assemblies (MEAs) for proton exchange membrane fuel cell (PEMFC) applications must survive fuel starvation events which occur when the flow…”
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Pulsed vs. galvanostatic accelerated stress test protocols: Comparing predictions for anode reversal tolerance in proton exchange membrane fuel cells by Peng, Ye, Choi, Ja-Yeon, Bai, Kyoung, Zhang, Yi, Banham, Dustin

“…Fuel starvation events occur in proton exchange membrane fuel cells (PEMFCs) when the flow fields become blocked by ice or dust/debris from the environment…”
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Oxygen Reduction on Graphene–Carbon Nanotube Composites Doped Sequentially with Nitrogen and Sulfur by Higgins, Drew C, Hoque, Md Ariful, Hassan, Fathy, Choi, Ja-Yeon, Kim, Baejung, Chen, Zhongwei

“…The development of unique, reliable, and scalable synthesis strategies for producing heteroatom-doped nanostructured carbon materials with improved activity…”
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