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Pendopan tanpa elektrod mangan dioksida elektrolitik dengan nikel dan penciriannya

Ab. Rashid, Raizul Azita (2005) Pendopan tanpa elektrod mangan dioksida elektrolitik dengan nikel dan penciriannya. Masters thesis, Universiti Teknologi Malaysia, Faculty of Science.

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Abstract

A RAM cathode is composed of electronic manganese dioxide (EMD), graphite and additives whilst anode material which is based on zinc gel. Manganese dioxide, is a semiconductor which has conductivity range of 10-6 to 10-3 –1cm-1. This conductivity of EMD is expecting to increase by dopping nickel using the electroless nickel doping technique. This study is based on preparation of EMD-Ni with used materials SnCl2, PdCl2 and NiSO4 with different ratio. EMD-Ni 9 gave the highest result which used SnCl2 : PdCl2 : NiSO4 with ratio 1 : 0.68 : 1. Energy despersive analysis X-ray (EDAX) showed that EMD-Ni 9 gave the highest percentage i.e 29.53 %. Surface morphology study using scanning electron microscopy (SEM) showed that electroless nickel doping gave the homogenous doping of nickel onto EMD-Ni 9. Conductivity measure measurement using the Van der Pauw method showed that EMD-Ni 9 gave the conductivity i.e 6.748 X 10-4 -1 cm-1. The crystallinites of the EMD-Ni 9 sample consisit of phosporus monoclinic and nickel cube. The crystallinites of the EMD-Ni 9 cause gave the highest conductivity and it is better than EMD before electroless nickel doping i.e 4.703 X 10-4 -1 cm-1 . From the gas hidrogen adsorption analysis, sample EMD-Ni 9 showed a meso porosity characteristics with the isothermal adsorption showing a Type IV.

Item Type:Thesis (Masters)
Additional Information:Thesis (Sarjana Sains (Kimia)) - Universiti Teknologi Malaysia, 2005; Supervisor I : Assoc. Prof. Dr. Madzlan Bin Aziz; Supervisor II : Assoc. Prof. Haji Jamil Bin Yusof
Uncontrolled Keywords:Rechargeable Alkaline Manganese Dioxide; electronic manganese dioxide (EMD); conductivity measure; semiconductor; electroless nickel doping technique
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:3991
Deposited By: Ms Zalinda Shuratman
Deposited On:27 Jul 2007 03:43
Last Modified:31 Jul 2012 04:20

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