个人简介

B.S., Massachusetts Institute of Technology, 1986; M.S., University of California, 1988; Ph.D., Massachusetts Institute of Technology, 1992. Assistant Professor, Caltech, 1996-2001; Associate Professor, 2001-06; Professor, 2006-11; Braun Professor, 2012-.

研究领域

Chemical Engineering

Sossina Haile's research broadly encompasses solid state ionic materials and devices, with particular focus on energy technologies. She has established a new class of fuel cells based on solid acid electrolytes and demonstrated record power densities for solid oxide fuel cells. Her more recent work on water and carbon dioxide dissociation for solar-fuel generation by thermochemical processes has created new avenues for harnessing sunlight to meet energy demands. Specific materials under investigation in Dr. Haile's group include proton-conducting solid acid compounds, mixed oxygen- and electron-conducting fluorites and perovskites, and proton-conducting perovskites. Characterization tools range from A.C. impedance spectroscopy in a variety of configurations to x-ray and neutron scattering and thermal analysis. In many cases, specialized in-house tools are constructed allowing acquisition of data otherwise inaccessible using commercial instrumentation. Using these methods, her group has shown, for example, that defect trapping plays a significant role in limiting the magnitude of proton conductivity in yttrium-doped barium zirconate, one of the most promising electrolytes for reduced-temperature solid-oxide fuel cells.

近期论文

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Thoi, V. Sara and Usiskin, Robert E. and Haile, Sossina M. (2015) Platinum-decorated carbon nanotubes for hydrogen oxidation and proton reduction in solid acid electrochemical cells. Chemical Science, 6 (2). pp. 1570-1577. ISSN 2041-6520 . http://resolver.caltech.edu/CaltechAUTHORS:20150105-134450527 Hao, Yong and Yang, Chih-Kai and Haile, Sossina M. (2014) Ceria−Zirconia Solid Solutions (Ce_(1−x)Zr_xO_(2−δ), x ≤ 0.2) for Solar Thermochemical Water Splitting: A Thermodynamic Study. Chemistry of Materials, 26 (20). pp. 6073-6082. ISSN 0897-4756. http://resolver.caltech.edu/CaltechAUTHORS:20141208-135234648 Yang, Chih-Kai and Yamazaki, Yoshihiro and Aydin, Aykut et al. (2014) Thermodynamic and kinetic assessments of strontium-doped lanthanum manganite perovskites for two-step thermochemical water splitting. Journal of Materials Chemistry A, 2 (33). pp. 13612-13623. ISSN 2050-7488. http://resolver.caltech.edu/CaltechAUTHORS:20140721-090759158 Usiskin, Robert E. and Maruyama, Shingo and Kucharczyk, Chris J. et al. (2014) Scanning impedance probe for high-​throughput electrochemical characterization of solid state electrodes. In: 248th American Chemical Society National Meeting & Exposition, August 10-14, 2014, San Francisco, CA. http://resolver.caltech.edu/CaltechAUTHORS:20140815-081314349 Blanc, Frédéric and Sperrin, Luke and Lee, Daniel A. et al. (2014) Dynamic Nuclear Polarization NMR of Low‑γ Nuclei: Structural Insights into Hydrated Yttrium-Doped BaZrO_3. Journal of Physical Chemistry Letters, 5 (14). pp. 2431-2436. ISSN 1948-7185 . http://resolver.caltech.edu/CaltechAUTHORS:20140814-112647852 Jung, WooChul and Gu, Kevin L. and Choi, Yoonseok et al. (2014) Robust nanostructures with exceptionally high electrochemical reaction activity for high temperature fuel cell electrodes. Energy and Environmental Science, 7 (5). pp. 1685-1692. ISSN 1754-5692. http://resolver.caltech.edu/CaltechAUTHORS:20140603-133823110 Venstrom, Luke J. and De Smith, Robert M. and Hao, Yong et al. (2014) Efficient Splitting of CO_2 in an Isothermal Redox Cycle Based on Ceria. Energy and Fuels, 28 (4). pp. 2732-2742. ISSN 1520-5029. http://resolver.caltech.edu/CaltechAUTHORS:20140529-144115413 Ikeda, Ayako and Kitchaev, Daniil A. and Haile, Sossina M. (2014) Phase behavior and superprotonic conductivity in the Cs_(1-x)Rb_xH_2PO_4 and Cs_(1-x)K_xH_2PO_4 systems. Journal of Materials Chemistry A, 2 (1). pp. 204-214. ISSN 2050-7488. http://resolver.caltech.edu/CaltechAUTHORS:20131202-142301624 Gopal, Chirranjeevi Balaji and Haile, Sossina M. (2014) An electrical conductivity relaxation study of oxygen transport in samarium doped ceria. Journal of Materials Chemistry A, 2 (7). pp. 2405-2417. ISSN 2050-7488. http://resolver.caltech.edu/CaltechAUTHORS:20140214-105250564 Usiskin, Robert E. and Maruyama, Shingo and Kucharczyk, Chris J. et al. (2014) Scanning impedance probe for high-throughput electrochemical characterization of solid state electrodes. Preprints - American Chemical Society, 59 (2). p. 351. http://resolver.caltech.edu/CaltechAUTHORS:20141024-103513013 Hao, Yong and Yang, Chih-Kai and Haile, Sossina M. (2013) High-temperature isothermal chemical cycling for solar-driven fuel production. Physical Chemistry Chemical Physics, 15 (40). pp. 17084-17092. ISSN 1463-9076. http://resolver.caltech.edu/CaltechAUTHORS:20131108-084243490 Yamazaki, Yoshihiro and Blanc, Frédéric and Okuyama, Yuji et al. (2013) Proton trapping in yttrium-doped barium zirconate. Nature Materials, 12 (7). pp. 647-651. ISSN 1476-1122. http://resolver.caltech.edu/CaltechAUTHORS:20130814-134902895 Boyd, David A. and Hao, Yong and Li, Changy et al. (2013) Block Copolymer Lithography of Rhodium Nanoparticles for High Temperature Electrocatalysis. ACS Nano, 7 (6). pp. 4919-4923. ISSN 1936-0851 . http://resolver.caltech.edu/CaltechAUTHORS:20130809-100016232 Varga, Áron and Pfohl, Moritz and Brunelli, Nicholas A. et al. (2013) Carbon nanotubes as electronic interconnects in solid acid fuel cell electrodes. Physical Chemistry Chemical Physics, 15 (37). pp. 15470-15476. ISSN 1463-9076. http://resolver.caltech.edu/CaltechAUTHORS:20130924-085817202 Oh, Tae-Sik and Boyd, David A. and Goodwin, David G. et al. (2012) Proton conductivity of columnar ceria thin-films grown by chemical vapor deposition. Physical Chemistry Chemical Physics, 15 (7). pp. 2466-2472. ISSN 1463-9076. http://resolver.caltech.edu/CaltechAUTHORS:20130221-102455104 Oh, Tae-Sik and Tokpanov, Yury S. and Hao, Yong et al. (2012) Determination of optical and microstructural parameters of ceria films. Journal of Applied Physics, 112 (10). Art. No. 103535 . ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:20130103-094855552 Jung, WooChul and Dereux, Julien O. and Chueh, William C. et al. (2012) High electrode activity of nanostructured, columnar ceria films for solid oxide fuel cells. Energy and Environmental Science, 5 (9). pp. 8682-8689. ISSN 1754-5692. http://resolver.caltech.edu/CaltechAUTHORS:20121009-095438339 Chueh, William C. and Haile, Sossina M. (2012) Electrochemistry of Mixed Oxygen Ion and Electron Conducting Electrodes in Solid Electrolyte Cells. Annual Review of Chemical and Biomolecular Engineering, 3 . pp. 313-341. ISSN 1947-5438. http://resolver.caltech.edu/CaltechAUTHORS:20121018-130715045 Chueh, William C. and McDaniel, Anthony H. and Grass, Michael E. et al. (2012) Highly Enhanced Concentration and Stability of Reactive Ce^3+ on Doped CeO_2 Surface Revealed In Operando. Chemistry of Materials, 24 (10). pp. 1876-1882. ISSN 0897-4756. http://resolver.caltech.edu/CaltechAUTHORS:20120618-102638412 Panithipongwut, Chatr and Haile, Sossina M. (2012) High-temperature phase behavior in the Rb_3H(SO_4)_2–RbHSO_4 pseudo-binary system and the new compound Rb_5H_3(SO_4)_4. Solid State Ionics, 213 . pp. 53-57. ISSN 0167-2738. http://resolver.caltech.edu/CaltechAUTHORS:20120530-074840661