Improving Electrochemical Performance of Lithium-Ion Batteries Using LiMn2O4 Cathodes
M. C. Rao*
Journal Title:Journal of Chemical, Biological and physical sciences
The performance of current energy conversion and storage technologies falls
short of requirements for the efficient use of electrical energy in transportation,
commercial and residential applications.
Materials have always played a critical role in energy production, conversion and storage
and today there are even greater challenges to overcome if materials are to meet these
higher performance demands. Improvements in the capacity of modern lithium batteries
continue to be made possible by enhanced electronic conductivities and ionic diffusivities
in anode and cathode materials.
Fundamentally, such improvements present a materials science and manufacturing
challenge: cathodes in these battery cells are normally comprised of metal oxides of
relatively low electronic conductivity and separator/electrolyte compositions must be
tuned to readily admit ions, while simultaneously forming safe, impenetrable and
electronically insulating barriers.
Lithium ion battery is one of the popular power sources for electronic devices. Although
various cathode materials have been studied for lithium ion battery, spinel type LiMn2O4
is more attractive than any other materials due to its low cost, low toxic and high rate.
Recently, researches and developments on spinel type LiMn2O4 have been carried out to
improve its electrochemical performance.