| Summary: | 碩士 === 國立清華大學 === 材料科學工程學系 === 98 === This study investigated the influence of conducting polymer
polyaniline on the electric properties of the porous aluminum paste
electrode. After the filling treatment, the aluminum particles of the porous
aluminum paste electrode were covered by a thin layer of PAni. The
formation of composite electrode structure leads to increase of electric
conductivity of electrode, cell efficiency, and endurance level of the cell
were investigated in depth.
In the PAni synthesis experiment, the effects of the dispersant and
the doping acid on the thermal stability and the conductivity of the
products were studied. In the electric conductivity, the effects of PAni
coating on the conductivity of the composite electrode can be explained
by the electron transport mechanism. In the cell efficiency experiment,
the effects of the presence of the PAni coating layers on the cell
efficiency were attributed to the series and shunt resistance. In the
endurance experiment, the hydrothermal and the corrosion tests were
adopted to study the anti-oxidative and the anti-corrosive capacities
individually.
Based on this study, the conductivity of the electrode was enhanced
which is attributed to both the improvement of the electric properties of
PAni and the formation of the composite electrode structure. Thus the cell
efficiency and the endurance level were improved, and the highest
increment of the cell efficiency in this study was 0.66 %.
|
|---|
