4. Conclusions
In summary, the results reported herein highlight a new ErCl3
alkaline aqueous pseudocapacitor system for the development of
easily prepared and high-performance supercapacitors. The electrode
materials, which were highly redox-reactive ErOOH colloids,
were in situ crystallized through electric field assisted chemical
coprecipitation by designing commercial ErCl3 salt electrode in
alkaline aqueous electrolyte. It showed significant predominance
that the electrode materials synthesis and subsequently integrating
into practical electrode structures occur at the same spatial
and temporal scale, which combines separate material-synthesis
and electrode-preparation processes used in traditional procedure.
The in situ formed ErOOH colloids can show higher Er cation utilization
ratio of 86% and deliver high specific capacitance of 1811