Graphite-metal rechargeable battery

This study is related to two electrode, single cell, graphite-stainless steel electrode, aqueous electrolyte battery. In this era of electric cars, batteries are key component. Metal-air batteries are considered to be suitable for this purpose, but quick after assembling metal electrode battery, an oxide layer is developed prohibiting the further oxidation of metal and hence potential drops to zero. To solve this problem, Metal is replaced by non-oxidizing stainless steel cathode and the graphite sheet is used as anode. The system used consists of a beaker filled with Ferrous Sulphate electrolyte and electrodes immersed in it. A constant current, constant voltage source was for initial charging. Battery was allowed to charge for a couple of minutes and then disconnected to study the temporal changes in voltage drop. The voltage developed across the terminals varied from 1 volt to fully discharge whereas as current rating with full potential was one ampere. The system behaves as battery because during the process of charging, flexible natural graphite foil is decomposed to form graphite/graphene layers running into electrolyte and deposited on electrode as. In this way both charging and discharging process were useful. Graphene, the end product of this process is very useful, environmental- friendly and recyclable material. Furthermore, the graphene rechargeable battery can be compacted to a small size.