detailed study on Nanobatterys
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Transcript of detailed study on Nanobatterys
NANO BATTERIES
By
Arvind Kumar rajput
IIMT ENGINEERING COLLEGE
DEFINITION
Batteries that are fabricated employing technology at
the nanoscale.
INTRODUCTION
Evolution of Nano batteries
Lithium Ion Battery Basics Electrochemical performance is determined by properties of the anode and cathode
materials.
Currently, carbon is used as the anode material.
Charge battery (lithiation): large volume expansion 200-400% LiM
Discharge battery (delithiation): volume contraction
xLi+ + xe- + M ↔ charge Lix+M-
ElectrolyteAnode Cathode
Li Ion
Li Ion Discharge
Charge
Fabrication and Measurement Si NWs were synthesized using the VLS process on stainless steel
substrates using Au catalyst.
The electrochemical properties were evaluated under an argon atmosphere by both cyclic voltammetry and galvanostatic cycling in a three electrode configuration, with the Si NWs on the stainless steel substrate as the working electrode and Li foil as both reference and counter-electrodes.
Comparison of Lithium Ion Batteries & Nano Batteries
Li-Ion Battery:
Electrolyte : Ether
Anode : Lithium Cobalt Oxide.
Cathode : Graphite
Mechanism of Li-ion Battery
Solid Electrolyte Interface Barrier
Li-Ion Battery:
Drawback : The battery cannot be charged
at temperatures before 320 F.
Reason : Due to the formation of solid
electrolyte interface barrier.
Nano Battery:
Advantage : Electrode is made up of
nanomaterial.
Result : No formation of solid electrolyte
interface barrier.
Mechanism of Nano Battery
Anode
Li+ Li+
Li+ Li+
Li+ Li+
Cathode
Li+
Li+
Li+
Li+
Charger
Current
Separator
Electrolyte
(Polymer battery: gel polymer electrolyte)
Li-Ion Battery:
Drawback : These batteries are slow to
charge and discharge.
Reasons :
• Due to the long distance Li-ions have to travel
through the electrode material in the battery.
• Speed at which the Li-ions make their way
through the electrode material is also slow.
Nano Battery:
Advantage : Electrode particles are non-
structured.
Result :
• Shortens the existing distance with in the
electrode material.
• Accelerates the recharging and discharging
rate.
Applications of Nano Battery
Electronics
Defense
Aerospace
Industrial
The Nanotechnological Batteries make every thing possible from a hybrid
vehicle capable of giving 150 miles/gallon to battery powered fabrics which
enables soldiers to plug electronic devices into their uniform.
The nanobatteries to be more specific has the potential to be used in the
following fields:
Health care sectors
At University of Tulsa
Under Dr Dale Teeters from the Dept of
Chemistry and Biochemistry.
Research and Development
Nano Battery:
Electrolyte : A wax solution of PEO and
lithium triflate.
Anode : Vanadium Oxide
Cathode : Graphite
Charging and Testing
Atomic force microscope
AC Impedance
Testing
Instrument
AFM
Atomic Force
Microscope
Tip
Any Questions
?