Synthesis and Characterization of New Composite Materials for Cathodes in Batteries
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Over the past decades, the revolution of lithium-ion batteries (LIBs) has been conquering the energy
storage market in a tremendous rate. Due to their high-power output and superior energy density,
LIBs have been used in most modern applications such as smart phones, electric vehicles and so on.
However, the drawbacks of LIBs regarding to safety and cost are still the barrier for batteries
application which impede the advancement of battery in the future. Therefore, innovative and new
battery types are under research and development, and one of these types is Magnesium-ions
batteries (MIBs). By using magnesium ions instead of lithium ions, we can lower the price for batteries
as well as ensure the safety of the batteries while it is operating.
The performance of batteries replies on active materials which are always the intention and goals for
scientist to find and develop new alternatives. Polyoxometalates (POMs) have received a lot of interest
due to their outstanding redox activity and molecular level tunability, from which POMs can have
multiple reversible electron transfer processes. Vanadium-based POMs, known as POVs, are of special
interest because of the low atomic weight of vanadium, compared with molybdenum- or tungstenbased
POMs, and their more pronounced redox-activity. Even though many researches in structural
designs gradually increase, the main challenges of POVs such as low thermal and stability in solvents
still remain and that cause difficulties for POVs in battery application.
In this work, a conducting polymer is used to support POVs by making a composite material which
then is the active materials for the battery. The attempt of combining MIBs and novel POVs
compounds is explored and new structures of POVs are made and suggested for further improvement
for MIBs in report.