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PROJECT TOPIC: DESIGN AND CONSTRUCTION OF A 6 VOLT LEAD AGD ACCUMULATOR

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ABSTRACT

This research work was done under a laboratory condition. During the course of this study, comprehensive literature survey or review of 6 Volt Lead Acid Accumulator was made.

          The material used like grid plates of lead, terminals, Perspex container used was sourced out locally from scars cells. The dilute sulphric acid (H2S04) used was diluted with distilled water.

          The constructed accumulator was then tested by filling with, dilute sulphric Acid of specific gravity of 1.25, charging it in the usual way and then using it to supply current is an external circuit it’s emf which was about 6.3 volts was found to be fairly steady for a good number of days thus indicating that it compares favourably with those manufactured under factory conditions. It’s internal resistance was also found to be low and is about 0.7ohms.

1.0Introduction                                                                                        1 1.1       Statement of Problem                                                                                     2 1.2       Aim and Objective of the Project                                                       2 1.3       Limitation of Study                                                                             3 1.4       Working Principle of a Cell                                                               3 1.5       Electrochemistry                                                                                             4 1.6       Thermodynamics of Electrochemical Cell                                        5 1.7       Electromotive Force (emf)                                                                 6

CHAPTER ONE

CHAPTER TWO 1.0Literature review                                                                                            8 2.1       Simple Voltaic Cell                                                                             11 2.2       Lechlanche Cell (Wet and Dry)                                                                     27 2.3       Storage Cell Summary                                                                                   30 2.4       Chemical Changes                                                                             34 2.5       Design and construction of a 6 – volt lead – acid accumulator (battery)                                                                                                           37 2.6       Properties of Components of the Battery                                           41 2.7       Applications of lead – Acid Batteries                                                             45 2.8       Maintenance of Lead Acid Cells                                                        46     CHAPTER THREE 2.0Methodology                                                                                       47 3.1       materials/Chemicals                                                                           47 3.2Active Materials of a Lead Acid Cell                                                 48 3.3.0Electrodes                                                                                                       49 3.4.0Construction of the Casing or the Container                                                51 3.5.0Forming Process for Pasted Plates                                                    55 3.6.0Construction of the Cells                                                                                55 3.7.0Positioning of the Cells                                                                                  56 3.8.0Construction of the two Terminals                                                    57 3.9.0Sealing of the Surface of the Container                                            57     CHAPTER FOUR 3.0Calculations and Results                                             &

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