Investigation of high performance cathode material for lithium Ion battery (LIB)
Over the recent decades, Rechargeable Lithium Ion Batteries (LIBs) have been one of the key research focus that contributes towards technological advancement of electronic devices. Along with rising concerns towards climate change, there have been a shift in focal point for engineering, with acce...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/148871 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Over the recent decades, Rechargeable Lithium Ion Batteries (LIBs) have been one
of the key research focus that contributes towards technological advancement of
electronic devices. Along with rising concerns towards climate change, there have
been a shift in focal point for engineering, with accelerating interests towards
sustainability and green innovations. One of the solutions towards a sustainable
future is through the proliferation of electric vehicles, which relies heavily on
electrochemical performance of LIBs. To attain greater driving range, numerous
researches have been working on Nickel-rich cathode materials in an effort to
improve reversible capacity of LIBs.
In this report, optimal synthesis parameters of LiNi0.8Mn0.1Co0.1O2 (NMC811)
under atmospheric air have been explored. Transitional metal hydroxide precusor
of 8:1:1 ratio will first be prepared via co-precipitation of transition metal sulfate.
Using the hydroxide precursor, various temperature and holding time for
atmospheric air calcination process have been experimented. Synthesised product
will then be characterised via X-ray Diffraction and Scanning Electron Microscope
to ensure that single crystalline NMC811 has been synthesised. Sample will then be
coated onto Aluminum sheet to be used as cathode active material. Upon coating,
the cathode will have its electrochemical performance tested through the use of
Gravimetric Charge/Discharge, Electrochemical Impedance Spectroscopy and
Cyclic Voltemetry.
This reports demonstrates a proof of concept on the feasibility of NMC811
calcination under atmospheric conditions, with relatively stable cycling
performance and high efficiency. |
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