Electrochemical performance of mechanochemically prepared polyaniline doped with lithium salt

Oxides and phosphates of transition metals are now predominant cathode materials of lithium-ion batteries. Organic redox active materials, conducting polymers in particular, could be a more environmentally friendly alternative. But their electrochemical characteristics were of insufficient level as to the charge capacity, rate capability and cyclability. Here, electrochemical performance of lithium salt doped polyaniline samples prepared by mechanochemical and chemical methods is comparatively analyzed as an active component of cathode masses of lithium batteries. It is shown that mechanochemically prepared polyaniline possesses specific capacity close to the theoretical limit as well as high rate capability and cyclability during prolonged charge–discharge.

Mechanochemically synthesized polyaniline is characterized by specific capacity close to the theoretical limit as well as high rate capability and cyclability during prolonged charge–discharge.Figure optionsDownload as PowerPoint slideHighlights
► Polyaniline samples are prepared by solvent-free mechanochemical and common methods.
► Electrochemical activity of the lithium salt doped polyaniline is determined by two redox processes.
► Mechanochemically prepared polyaniline possesses capacity close to the theoretical limit.
► Mechanochemically prepared polyaniline possesses high rate capability and cyclability.