Morphology And Construction Of Nickel-Oxide Electrode Effect On Performances And Service Life Of Carbon/Ni-Oxide Electrochemical Capacitors

摘要

This paper describes the main construction types of NiOx electrodes, being produced in series and developed, and possibility to use them in asymmetric capacitors of C/NiOx system. We analyzed influence of electrode structure morphological changes on initial and service life data. It is shown that the best types from the point of view of high power and stability of performances in floating mode and cycling mode, are Sintered type electrodes. Agglomerate electrodes allow to achieve higher values of energy density and power, but their morphology is more complex. We investigated the influence of content and nature of volumetric collector for NiOx electrode on output performances of electrochemical capacitor. It was founded that performances stability of NiOx agglomerate electrode must be determined not only by initial optimization of morphological structure, but also its fixed state of the structure at the capacitor usage.