Email:
jihcheng@peer.caltech.edu
Education
-Ph.D., Materials Science and Engineering,
University of California at Davis.
-M.S., Materials Science and Engineering,
Tsinghua University, China.
-B. E., Materials Science and Engineering,
Tsinghua University, China.
Research Interests:
Solid oxide technologies at
elevated temperatures are very promising
to provide low-cost and high-efficiency
distributed products such as hydrogen
and electricity. Based on
his knowledge and expertise in high
performance ceramics, solid oxide
fuel cells (SOFCs), and materials
science, Dr. Cheng's research interests
at PEER center extend to fuel processing
and SOFC system innovation.
Projects of interest include:
(1) Hydrocarbon conversion such
as oxidation or decarboxylation.
Issues such as exploring non-conventional
catalysts (e.g., rare earth oxides,
solid solution oxides and complex
oxides), oxidants, and media (e.g.,
ionic liquids) will be systematically
addressed.
(2) Hydrogen production separation.
Gas separation reactors using innovative
materials such as proton/electron
conducting ceramic membranes will
be developed. Specific optimization
is focused on reactor shape design
(planar vs. tubular), carbon and
sulfur tolerant catalysts, and sealing
technology.
(3) New fuel cell system integration.
This project aims to integrate the
newly developed hydrocarbon conversion/separation
technologies into the existing SOFC
power systems. The compatibility,
reliability, durability as well
as manufacturability and cost, which
are all critical factors in meeting
the ultimate goal of commercialization,
will be evaluated.
Publications:
-J.
Cheng, A. Navrotsky, X.-D. Zhou,
and H. U. Anderson, "Thermochemistry
of La1-xSrxFeO3-¦al of Materials
Research, in press.
- J. Cheng, and A. Navrotsky,
"Energetics of magnesium, strontium,
and barium doped lanthanum gallate
perovskites," Journal of Solid
State Chemistry, 177 (1), 126-133,
2004.
-J. Cheng, and A. Navrotsky, "Enthalpies
of formation of LaBO3
perovskites (B = Al, Ga, Sc and
In)," Journal of Materials
Research, 18 (10), 2501-2508,
2003.
-S. V. Ushakov, J. Cheng, A. Navrotsky,
J. R. Wu, and S. M. Haile, "Formation
enthalpies of tetravalent lanthanide
perovskites by high temperature
oxide melt solution calorimetry,"
Materials Research Society
Symposium Proceedings, 718,
71-76, 2002.
-J. Cheng, Z. Zeng, C. Wu, X.
Hu, and H. Miao, "Boron nitride-aluminum
nitride ceramic composites fabricated
by transient plastic phase processing,"
Journal of the American Ceramic
Society, 84 (4), 887-889, 2001.
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