Search

Your search keyword '"Lu, Qiyang"' showing total 8 results
Start Over Author "Lu, Qiyang" Publisher springer science and business media llc
8 results on '"Lu, Qiyang"'

2. Colossal oxygen vacancy formation at a fluorite-bixbyite interface

Author

Massachusetts Institute of Technology. Laboratory for Electrochemical Interfaces, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Sun, Lixin, Lu, Qiyang, Yildiz, Bilge, Massachusetts Institute of Technology. Laboratory for Electrochemical Interfaces, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Sun, Lixin, Lu, Qiyang, and Yildiz, Bilge

Abstract

Oxygen vacancies in complex oxides are indispensable for information and energy technologies. There are several means to create oxygen vacancies in bulk materials. However, the use of ionic interfaces to create oxygen vacancies has not been fully explored. Herein, we report an oxide nanobrush architecture designed to create high-density interfacial oxygen vacancies. An atomically well-defined (111) heterointerface between the fluorite CeO2 and the bixbyite Y2O3 is found to induce a charge modulation between Y3+ and Ce4+ ions enabled by the chemical valence mismatch between the two elements. Local structure and chemical analyses, along with theoretical calculations, suggest that more than 10% of oxygen atoms are spontaneously removed without deteriorating the lattice structure. Our fluorite–bixbyite nanobrush provides an excellent platform for the rational design of interfacial oxide architectures to precisely create, control, and transport oxygen vacancies critical for developing ionotronic and memristive devices for advanced energy and neuromorphic computing technologies., United States. Department of Energy. Office of Science User Facility (Contract DE-AC02-05CH11231), United States. Department of Energy. Office of Science (Contract DE-AC02-06CH11357)

Published
2020

3. Tuning electrochemically driven surface transformation in atomically flat LaNiO3 thin films for enhanced water electrolysis

Author

Baeumer, Christoph, primary, Li, Jiang, additional, Lu, Qiyang, additional, Liang, Allen Yu-Lun, additional, Jin, Lei, additional, Martins, Henrique Perin, additional, Duchoň, Tomáš, additional, Glöß, Maria, additional, Gericke, Sabrina M., additional, Wohlgemuth, Marcus A., additional, Giesen, Margret, additional, Penn, Emily E., additional, Dittmann, Regina, additional, Gunkel, Felix, additional, Waser, Rainer, additional, Bajdich, Michal, additional, Nemšák, Slavomír, additional, Mefford, J. Tyler, additional, and Chueh, William C., additional

Published
2021
Full Text
View/download PDF

5. Colossal oxygen vacancy formation at a fluorite-bixbyite interface

Author

Lee, Dongkyu, primary, Gao, Xiang, additional, Sun, Lixin, additional, Jee, Youngseok, additional, Poplawsky, Jonathan, additional, Farmer, Thomas O., additional, Fan, Lisha, additional, Guo, Er-Jia, additional, Lu, Qiyang, additional, Heller, William T., additional, Choi, Yongseong, additional, Haskel, Daniel, additional, Fitzsimmons, Michael R., additional, Chisholm, Matthew F., additional, Huang, Kevin, additional, Yildiz, Bilge, additional, and Lee, Ho Nyung, additional

Published
2020
Full Text
View/download PDF

7. Chemomechanics of ionically conductive ceramics for electrical energy conversion and storage

Author

Swallow, Jessica Gabrielle, Woodford, William Henry, Chen, Y., Lu, Qiyang, Kim, Jae Jin, Chen, D., Chiang, Yet-Ming, Carter, W. Craig, Yildiz, Bilge, Tuller, Harry L., Van Vliet, Krystyn J, Van Vliet, Krystyn J., Massachusetts Institute of Technology. Laboratory for Material Chemomechanics, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Swallow, Jessica Gabrielle, Woodford, William Henry, Chen, Y., Lu, Qiyang, Kim, Jae Jin, Chen, D., Chiang, Yet-Ming, Carter, W. Craig, Yildiz, Bilge, Tuller, Harry L., and Van Vliet, Krystyn J.

Subjects
Battery (electricity), Materials science, Thermodynamic equilibrium, Nanotechnology, Condensed Matter Physics, Durability, Electronic, Optical and Magnetic Materials, Characterization (materials science), Coupling (electronics), Modeling and simulation, Mechanics of Materials, visual_art, Materials Chemistry, Ceramics and Composites, Forensic engineering, visual_art.visual_art_medium, Energy transformation, Ceramic, Electrical and Electronic Engineering
Abstract

Functional materials for energy conversion and storage exhibit strong coupling between electrochemistry and mechanics. For example, ceramics developed as electrodes for both solid oxide fuel cells and batteries exhibit cyclic volumetric expansion upon reversible ion transport. Such chemomechanical coupling is typically far from thermodynamic equilibrium, and thus is challenging to quantify experimentally and computationally. In situ measurements and atomistic simulations are under rapid development to explore how this coupling can be used to potentially improve both device performance and durability. Here, we review the commonalities of coupling between electrochemical and mechanical states in fuel cell and battery materials, illustrating with specific cases the progress in materials processing, in situ characterization, and computational modeling and simulation. We also highlight outstanding questions and opportunities in these applications – both to better understand the limiting mechanisms within the materials and to significantly advance the durability and predictability of device performance required for renewable energy conversion and storage., United States. Dept. of Energy (Basic Energy Sciences Division of Materials Sciences and Engineering, grant DE-SC0002633), United States. Dept. of Energy (Office of Science, Graduate Fellowship Program (DOE SCGF)), United States. American Recovery and Reinvestment Act of 2009 (ORISE-ORAU, contract no. DE-AC05-06OR23100)), United States. Dept. of Energy. Division of Materials Sciences and Engineering (MIT/DMSE Salapatas Fellowship), United States. Air Force Office of Scientific Research (Presidential Early Career Award in Science and Engineering (PECASE))

Published
2014

Catalog

Books, media, physical & digital resources
See catalog results