Atoms have electrons circling them. Some are loosely attached. When electrons move among the atoms of matter, a current of electricity is created. Electricity flows through some objects better than others. Copper is a good conductor of electricity.
Batteries store chemical energy.
An electric circuit connects the positive and negative poles of the battery and allows an electrical current to happen. Static electricity doesn't move. It is the energy that can stick a balloon to a wall if you rub the balloon across a sweater. Lightning is another form of static electricity.