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Highly Active and Durable Ordered Intermetallic PdFe Electrocatalyst for Formic Acid Electrooxidation Reaction

Autor: Yun Sik Kang, Hyung Chul Ham, Hee-Young Park, Minjeh Ahn, Injoon Jang, Daeil Choi, Taehyun Park, Kug-Seung Lee, Sung Jong Yoo, Jinwon Cho

Publikováno v: ACS Applied Energy Materials. 3:4226-4237

In this paper, we report the preparation of highly active and durable ordered intermetallic PdFe catalyst supported on carbon black for formic acid oxidation reaction (FAOR) by high-temperature hea...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d417a3181bd02f119c68234ec6c6c8e9
https://doi.org/10.1021/acsaem.9b02389

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Development of robust Pt shell through organic hydride donor in PtCo@Pt core-shell electrocatalysts for highly stable proton exchange membrane fuel cells

Autor: Sung Jong Yoo, Injoon Jang, Yun Sik Kang, Jue-Hyuk Jang, Daeil Choi, Docheon Ahn, Hee-Young Park, Kug-Seung Lee, Sehyun Lee

Publikováno v: Journal of Catalysis. 379:112-120

Platinum alloys with other transition metals are widely used as catalysts as a promising strategy to improve the activity. However, the vulnerability of transition metals to the liquid electrolyte and fuel gases present during the device operation re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a1d8e379d744c363e8f1b2378706a77
https://doi.org/10.1016/j.jcat.2019.09.020

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Tuning the surface structure of PtCo nanocatalysts with high activity and stability toward oxygen reduction

Autor: Daeil Choi, Yun Sik Kang, Hee-Young Park, Sung Jong Yoo

Publikováno v: Journal of Industrial and Engineering Chemistry. 78:448-454

Herein, we prepare various types of PtCo nanocatalysts with Pt skin structure for oxygen reduction reaction (ORR) in acidic electrolyte by utilizing post-treatments such as acid leaching, additional Pt reduction (PtCo–Pt (chem)), and thermal anneal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::806171b63b3f81174aaef8e13764dad3
https://doi.org/10.1016/j.jiec.2019.05.021

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Boosting Fuel Cell Durability under Shut-Down/Start-Up Conditions Using a Hydrogen Oxidation-Selective Metal–Carbon Hybrid Core–Shell Catalyst

Autor: Hukwang Sung, Monika Sharma, Jiho Min, Sung Jong Yoo, Yun Sik Kang, Youngjin Kim, Jeonghee Jang, Daeil Choi, Namgee Jung

Publikováno v: ACS Applied Materials & Interfaces. 11:27735-27742

Performance degradation generated by reverse current flow during fuel cell shut-down/start-up is a big challenge for commercialization of polymer electrolyte membrane fuel cells in automobile applications. Under transient operating conditions, the fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9718985034fa0c68e5144bb962248001
https://doi.org/10.1021/acsami.9b06309

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Pt-Sputtered Ti Mesh Electrode for Polymer Electrolyte Membrane Fuel Cells

Autor: Taehyun Park, Daeil Choi, Yun Sik Kang, Jo Sunhee, Sung Jong Yoo, Jin Young Kim

Publikováno v: International Journal of Precision Engineering and Manufacturing-Green Technology. 6:271-279

We suggest a new type of membrane-electrode assembly (MEA) for polymer electrolyte membrane fuel cells (PEMFCs) to substitute the conventional Pt/C catalyst layer and carbon-based gas diffusion layer. We fabricated the MEA by simply sputtering Pt on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c309108992713e4d7f996b8092c04575
https://doi.org/10.1007/s40684-019-00077-6

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Work function-tailored graphene via transition metal encapsulation as a highly active and durable catalyst for the oxygen reduction reaction

Autor: Hukwang Sung, Dong-Hee Lim, Kwan Young Lee, Jeong An Kwon, Daeil Choi, Namgee Jung, Jeonghee Jang, Sung Jong Yoo, Dong Yun Shin, Monika Sharma, Hee-Young Park, Sang-Young Lee, Jue-Hyuk Jang

Publikováno v: Energy & Environmental Science. 12:2200-2211

To dramatically improve the performance of non-precious catalyst-based anion exchange membrane fuel cells (AEMFCs), a conceptual change in the structure of conventional electrocatalysts is needed. Here we report a novel work function tailoring of gra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37326ce62817d89138ddb7ecc6b0be80
https://doi.org/10.1039/c9ee00381a

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Strain-Stabilized 1T Phase Ruthenium Sulfoselenide Monolayer Nanotubes for Oxygen Reduction Reaction in Alkaline Medium

Autor: Myeong-Geun Kim, Dong Wook Lee, Daeil Choi, Sung Jong Yoo

Publikováno v: ECS Meeting Abstracts. :1533-1533

Backgrounds: In pursuit of sustainable development, a fuel cell become a key device that can convert chemical energy in hydrogen and oxygen into electrical energy. In this field, the sluggish reaction kinetics of the oxygen reduction reaction (ORR) o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::404db13a71a780cd99880284672c307a
https://doi.org/10.1149/ma2022-01351533mtgabs

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