Power generation will move increasing toward renewables so at some point there will be not carbon input in both battery manufacture and recharge.  However, I do not think that batteries alone are efficient for transportation so there will likely be a fuel cell hybrid.  Energy will be stored in something like hydrogen although I think that that storage will be converted to a less efficient but easier to use form like ethanol. There are already CO2 + energy= ethanol converters.  There is still some development to get it to mass production but similar technologies are all moving forward fairly rapidly now that they are in demand.