1:45 – 5:30pm, Monday,
Lithium Batteries—The next
Generation of Power Source for Vehicles
X. Q. Yang, K.
W. Nam, H. S. Lee, and J. McBreen
Brookhaven National Lab. Upton,
The application of lithium-ion batteries have
expanded rapidly into cell phones, notebook computers, and
consumer electronics. However, in order to meet the great
challenge as power source for electric and hybrid electric
vehicles (EV and HEV), better lithium-ion batteries with lower
cost, longer cycling life, and improved safety characteristics
need to be developed.
In this tutorial we will present
the basic chemistry,
current state of art materials for
The new materials under development and their
advantages and disadvantages in comparison with the current
ones will be discussed. The comparison between the
lithium-ion batteries and the Nickel-metal hydride batteries,
which is currently being used in most HEVs will be given.
Some market overview and the development outlook in US, Japan
and China will also be presented.
Xiao-Qing Yang is a material scientist and PI for the Applied
Battery Research for Transportation (ABRT) and Batteries for
Advanced Transportation Technologies (BATT) projects at BNL
funded by the Office of Vehicle Technologies, EE&RE, U.S.
Department of Energy (USDOE). The goals of these projects
include synthesis and characterization of new cathode, anode,
and electrolyte materials with improved calendar and cycling
life, better abuse tolerance for lithium batteries. Together
with his colleagues at Brookhaven National Lab., he has
developed several new synchrotron based x-ray techniques to do
in situ characterization of battery materials. Using these
techniques, many new structures, new phase transitions, and
new observations about the structural changes of battery
materials during charge-discharge cycling and under other
operating conditions have been reported by his research group.
He and his co-workers has also designed, synthesized, and
characterized several families of new boron based compounds as
anion receptors. When used as additives, these new compounds
can increase the solubility of LiF salt in organic solvents by
several orders of magnitude, which opened up a new approach in
developing electrolytes for high voltage electrolytes for
lithium-ion batteries. Several US patents had been awarded.
Dr. Yang’s research on
lithium battery materials is well recognized internationally.
He has been invited to give presentations at international
conferences and world class institutions, such as Paul
Scherrer Institute in Switzerland; Argonne National Laboratory
in US; and industrial companies such as Sony and Panasonic in
Japan, Samsung and LG Chem. in Korea; Institute of Physics,
Chinese Academy of Sciences and Tsinghua University in China.
Dr. Yang organized and
co-organized several international conferences, such as
IBA2007 in Shenzhen and CIBF2006 in Beijing. He is one of the
organizers and the general secretary for the 14th
International meeting of Lithium Battery (14th IMLB)
in Tianjin, China, June 22, 2008. Dr. Yang was elected as a
member of the board of directors of the International Battery
Materials Associate (IBA) in December of 2008.
Dr. Yang received his Ph.
D. in physics in 1986 from University of Florida and worked as
post-doc research associate at Brookhaven National Lab. from
1986 to 1988. He was promoted to assistant scientist in 1988,
associate scientist in 1990, and scientist in 1993. He is a
group leader of energy storage research in Chemistry
Department of BNL now working on the synthesis and
characterization of lithium battery materials for EV, HEV, and
PHEV. Honorable Positions include Guest Professor, Department
of Physics, Wuhan University; Science advisor, Tianjin Power
Source Institute; Associated chief editor, Chinese Journal of