Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Kee-Chul Chang"'
Publikováno v:
Solid State Ionics. 311:118-126
We present synchrotron x-ray investigations of thin film La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 − δ (LSCF) model cathodes for solid oxide fuel cells, grown on electrolyte substrates by pulse laser deposition, in situ during half-cell operations. We obser
Publikováno v:
Solid State Ionics. 311:127-131
Infiltrated La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) sintered porous powder cathodes for solid oxide fuel cells have been investigated by synchrotron ultra-small angle x-ray scattering (USAXS). We demonstrated that atomic layer deposition (ALD) is the method
Autor:
Peter M. Baldo, Jeffrey A. Eastman, Haesun Park, Brian J. Ingram, Hoydoo You, Peter Zapol, E. Mitchell Hopper, Kee-Chul Chang, Dongwei Xu, Paul H. Fuoss
Publikováno v:
Journal of Power Sources. 451:227478
Oxygen reduction and transport in electrochemical applications are strongly affected by the reactant gas composition, including impurities such as water. Understanding the relationship between oxygen reactivity and humidity is key for attaining stabi
Publikováno v:
Microscopy of Semiconducting Materials 2003 ISBN: 9781351074636
Microscopy of Semiconducting Materials 2003
Microscopy of Semiconducting Materials 2003
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a75736280b3ea233b0f2ad574d90194
https://doi.org/10.1201/9781351074636-144
https://doi.org/10.1201/9781351074636-144
Autor:
Edith Perret, Peter M. Baldo, Brian J. Ingram, Paul H. Fuoss, E. Mitchell Hopper, Jeffrey A. Eastman, Hoydoo You, Kee-Chul Chang
Publikováno v:
The Journal of Physical Chemistry C. 119:19915-19921
In situ synchrotron X-ray diffraction was used to investigate oxygen surface exchange behavior in La0.6Sr0.4Co0.2Fe0.8O3−δ/Gd2O3-doped CeO2/Y2O3-stabilized ZrO2 (LSCF/GDC/YSZ) epitaxial thin-film h...
Publikováno v:
Nature Energy. 2
Design of cost-effective electrocatalysts with enhanced stability and activity is of paramount importance for the next generation of energy conversion systems, including fuel cells and electrolysers. However, electrocatalytic materials generally impr
Autor:
Deborah J. Myers, Dusan Strmcnik, Nemanja Danilovic, Ramachandran Subbaraman, Joshua Snyder, Seo Hyoung Chang, Kee-Chul Chang, Nenad M. Markovic, Yijin Kang, Yong-Tae Kim, Vojislav R. Stamenkovic, Arvydas P. Paulikas
Publikováno v:
Angewandte Chemie International Edition. 53:14016-14021
The methods used to improve catalytic activity are well-established, however elucidating the factors that simultaneously control activity and stability is still lacking, especially for oxygen evolution reaction (OER) catalysts. Here, by studying fund
Autor:
Seo Hyoung Chang, Nemanja Danilovic, Ram Subbaraman, Kee-Chul Chang, Nenad M. Markovic, Vojislav R. Stamenkovic, Justin G. Connell
Publikováno v:
Faraday Discuss.. 176:125-133
Understanding the functional links between the stability and reactivity of oxide materials during the oxygen evolution reaction (OER) is one key to enabling a vibrant hydrogen economy capable of competing with fossil fuel-based technologies. In this
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 190:75-83
Synchrotron-based X-ray techniques have been used to study in situ the structural and chemical changes of film cathodes during half-cell operations. The X-ray techniques used include X-ray reflectivity (XR), total-reflection X-ray fluorescence (TXRF)
Autor:
Peter M. Baldo, Brian J. Ingram, Paul H. Fuoss, Jeffrey A. Eastman, Edith Perret, Kee-Chul Chang, Changyong Park, Dillon D. Fong
Publikováno v:
Journal of Applied Crystallography. 46:76-87
Resonant anomalous X-ray reflectivity (RAXR) is a powerful technique for measuring element-specific distribution profiles across surfaces and buried interfaces. Here, the RAXR technique is applied to characterize a complex oxide heterostructure, La0.