of a particular battery in order to understand how batteries are arranged new generation. the film crew and i specially visited the center for electrochemical energy storage at the skolkovo institute of science and technology sodium make it possible to use light and cheap aluminum, instead of heavy and expensive copper, on a single pickup. this means that batteries can be discharged to zero and stored or transported in a fully discharged state at zero volts. they differ primarily in their internal content. the difference between a sodium ion battery is that both active material and cathode and we apply it exclusively on aluminum foil. this replacement of copper with aluminum allows for a significant increase in safety, another clear advantage of the new batteries. this is the price of the three-sixth most common element of the earth's crust, you can even get it from table salt or baking soda, but lithium is scarce and every year it becomes more expensive 70% of lithium production is concentrated in latin america usa and china but for the production of sodium, everything is he's on the order of more, uh , available than lithium has more of him. and here we are the closest thing to you, probably, is three in