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Motivations and Battery Technology
• Affordable, practical batteries with 5x energy density of today’s Li-ion batteries are needed to ensure
that fully electrical vehicles feature a range similar to that of gasoline vehicles
• Eliminate “range anxiety”
• Allow recharging when electricity is cheap
• Reduce cycling range of battery throughout lifetime
• Provide excess capacity for V2G smart grid model (more later)
Such energy densities cannot be achieved with incremental advances of current Li-ion technology.
www.zurich.ibm.com/science-posters/
References and links:
• T. Laino, A. Curioni, Chemistry-A European Journal 18(12), 3510-3520 (2012)
• T. Laino, A. Curioni, New Journal of Physics (Materials Discovery),15, 095009 (2013)
• K. Meier, T. Laino, A. Curioni, Journal of Physical Chemistry C, 118 (13), 6668–6679 (2014)
• MARVEL: nccr-marvel.ch
Electrolyte Decomposition Revealed by Supercomputing Modeling
How a Lithium-Air Battery Works Designing Novel Electrolyte Materials
High-Energy Density Batteries:Understanding and Designing Materials
Teodoro Laino, Alessandro Curioni
Source: Huwi
courtesy of IBM ARC
Mass-spec
data shows
degradation
of propylene
carbonate
electrolyte.
PC spontaneously grafts first onto the surface
of Li2O2 and subsequently degrades in a
barrierless process.
Process is promoted
by the lithium ions
with a dual effect:
Enhancing the
polarization of the
carboxylic group and
mechanical effect
(see video, right)
Using molecular modeling we designed new
solvents with increased (+60%) stability.
Li-ion: ~250 Wh/Kg Li-air: 1000 Wh/Kg
Lit
hiu
m
Ele
ctr
oly
te