The Synthesis Of Nano-Pb(OH)₂, AgCuO₂ And Their Electrochemical Performance

The present dissertation comprehensively reports the systematical studies on the improvement of alkaline manganese batteries.The thesis has taken nano-Pb(OH)₂ and AgCuO₂ as main object of study and have carried out comparatively systematic research in two facets.Firstly,the discharge capability and circular characteristic of Pb(OH)₂ doped EMD electrode has been studied.We have established a new method to synthesize Pb(OH)₂.The best condition of this process is also discussed.XRD test,FSEM test,TG-DSC test and FT-IR test show that the prepared Pb(OH)₂ is nano-Pb(OH)₂.In order to study the influence of doping,nano-Pb(OH)₂ is doped to EMD electrode.The discharge tests and the CV tests show that the discharge capability of Pb(OH)₂ doped MnO₂ electrode is improved. When the impure quantity reached to 2.5%,the discharge capability of nano-Pb(OH)₂ doped EMD electrode increased 15.3%.The best ratio of Pb(OH)₂ to total anode active material is 5%,9M KOH is used as electrolyte and graphite is used as electric conductor material.Secondly,we have synthesized AgCuO₂ using the deoxidation mechanism.The best condition of this process is also discussed.XRD test,SEM test show that the AgCuO₂ has been prepared successfully.We also studied the electrochemistry capability of AgCuO₂ electrode.The charge and discharge capability under a unchangeable high current tests and the CV tests show that the electrochemistry capability of the electrode is very good.Under the high current density of 5A·g^-1,the discharge capability of the electrode is 480mAh·g^-1.The 100 circulation cycles discharg capability declined unconspicuous.The capability of AgCuO₂ is very stabilized.It is one kind of very good battery positive pole materials.