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  1. Article

    Open Access

    Surface restructuring of a perovskite-type air electrode for reversible protonic ceramic electrochemical cells

    Reversible protonic ceramic electrochemical cells (R-PCECs) are ideally suited for efficient energy storage and conversion; however, one of the limiting factors to high performance is the poor stability and in...

    Kai Pei, Yucun Zhou, Kang Xu, Hua Zhang, Yong Ding, Bote Zhao in Nature Communications (2022)

  2. Article

    Open Access

    Tuning proton-coupled electron transfer by crystal orientation for efficient water oxidization on double perovskite oxides

    Develo** highly efficient and cost-effective oxygen evolution reaction (OER) electrocatalysts is critical for many energy devices. While regulating the proton-coupled electron transfer (PCET) process via int...

    Yunmin Zhu, Zuyun He, YongMan Choi, Huijun Chen, **aobao Li in Nature Communications (2020)

  3. No Access

    Reference Work Entry In depth

    Electrocatalysis - Basic Concepts, Theoretical Treatments in Electrocatalysis via DFT-Based Simulations

    YongMan Choi in Encyclopedia of Applied Electrochemistry (2014)

  4. Article

    Open Access

    Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reaction

    The high cost of the platinum-based cathode catalysts for the oxygen reduction reaction (ORR) has impeded the widespread application of polymer electrolyte fuel cells. We report on a new family of non-precious...

    Jae Yeong Cheon, Taeyoung Kim, YongMan Choi, Hu Young Jeong in Scientific Reports (2013)

  5. Article

    Open Access

    Highly efficient and robust cathode materials for low-temperature solid oxide fuel cells: PrBa0.5Sr0.5Co2−xFexO5+δ

    Solid oxide fuel cells (SOFC) are the cleanest, most efficient and cost-effective option for direct conversion to electricity of a wide variety of fuels. While significant progress has been made in anode mater...

    Sihyuk Choi, Seonyoung Yoo, Jiyoun Kim, Seonhye Park, Areum Jun in Scientific Reports (2013)

  6. No Access

    Article

    Enhanced Oxygen Reduction Activity of IrCu Core Platinum Monolayer Shell Nano-electrocatalysts

    Designing novel cathode materials for a proton exchange membrane fuel cell with high activity for the oxygen reduction reaction, low Pt loading, and enhanced long-term stability is imperative for its sustainab...

    YongMan Choi, Kurian A. Kuttiyiel, Joselito P. Labis, Kotaro Sasaki in Topics in Catalysis (2013)

  7. No Access

    Article

    Acetone Condensation Over Sulfated Zirconia Catalysts

    The aldol condensation reaction over sulfated zirconia led to the production of diacetone alcohol, which was further dehydrated forming mesityl oxide. The sulfated zirconia was obtained from zirconium acetate ...

    Mohammed H. Al-Hazmi, YongMan Choi, Allen W. Apblett in Catalysis Letters (2013)

  8. No Access

    Article

    Highly stable Pt monolayer on PdAu nanoparticle electrocatalysts for the oxygen reduction reaction

    Stability is one of the main requirements for commercializing fuel cell electrocatalysts for automotive applications. Platinum is the best-known catalyst for oxygen reduction in cathodes, but it undergoes diss...

    Kotaro Sasaki, Hideo Naohara, YongMan Choi, Yun Cai, Wei-Fu Chen in Nature Communications (2012)

  9. Article

    Open Access

    Promotion of water-mediated carbon removal by nanostructured barium oxide/nickel interfaces in solid oxide fuel cells

    The existing Ni-yttria-stabilized zirconia anodes in solid oxide fuel cells (SOFCs) perform poorly in carbon-containing fuels because of coking and deactivation at desired operating temperatures. Here we repor...

    Lei Yang, YongMan Choi, Wentao Qin, Haiyan Chen, Kevin Blinn in Nature Communications (2011)

  10. No Access

    Article

    Continuum and Quantum-Chemical Modeling of Oxygen Reduction on the Cathode in a Solid Oxide Fuel Cell

    Solid oxide fuel cells (SOFCs) have several advantages over other types of fuels cells such as high-energy efficiency and excellent fuel flexibility. To be economically competitive, however, new materials with...

    YongMan Choi, David S. Mebane, Jeng-Han Wang, Meilin Liu in Topics in Catalysis (2007)