Scientific paper ID 1933 : 2020/4

The rechargeable battery is one of the main elements of the electric car. It is a source of electricity needed to power the motor (s). The topic of the report is entirely focused on nickel-metal hydride batteries, as well as trends in their development.

The electric battery is a chemical source of current, whose main specificity is the reversibility of internal chemical processes. This ensures its repeated cyclic use (by charge-discharge) for energy storage and autonomous power supply of various electrical devices and equipment, as well as for providing backup energy sources in medicine, manufacturing, transport and other fields.

Thereportpresentsbasicdataonnickel-metalhydridebatteriesand a briefhistory of theinvention. Thedeviceandtheprinciple of operationareconsideredindetailwithfiguresanddiagrams, astheelectrochemicalschemeandthechemicalreactions, whichdescribethecharging-dischargeprocess, arepresented. Thechemicalcompoundsandelements of whichtheelectrolyteandelectrodesarecomposed, aswellastheirdevicearegiven. Themainparametersfortherespectivebatteryarepresentedintabularform. Itsadvantagesanddisadvantagesaredescribed. Withtheavailabledata, a comparisoncanbemadebetweenthedifferenttypes of batteries.