|dc.contributor.author||Reddy, Arava Leela Mohana
Gowda, Sanketh R.
Jadhav, Swapnil R.
Ajayan, Pulickel M.
Reddy, Arava Leela Mohana, Nagarajan, Subbiah, Chumyim, Porramate, et al.. "Lithium storage mechanisms in purpurin based organic lithium ion battery electrodes." Scientific Reports, 2, (2012) 960. http://dx.doi.org/10.1038/srep00960.
Current lithium batteries operate on inorganic insertion compounds to power a diverse range of
applications, but recently there is a surging demand to develop environmentally friendly green electrode
materials. To develop sustainable and eco-friendly lithium ion batteries, we report reversible lithium ion
storage properties of a naturally occurring and abundant organic compound purpurin, which is non-toxic
and derived from the plant madder. The carbonyl/hydroxyl groups present in purpurin molecules act as
redox centers and reacts electrochemically with Li-ions during the charge/discharge process. The
mechanism of lithiation of purpurin is fully elucidated using NMR, UV and FTIR spectral studies. The
formation of the most favored six membered binding core of lithium ion with carbonyl groups of purpurin
and hydroxyl groups at C-1 and C-4 positions respectively facilitated lithiation process, whereas hydroxyl
group at C-2 position remains unaltered.
Lithium storage mechanisms in purpurin based organic lithium ion battery electrodes
Army Research Office
National Science Foundation, Chemical, Bioengineering, Environmental and Transport Systems Division
Nature Publishing Group