Cool, but isn't it better to use naturally occurring alkaline minerals so that energy doesn't have to be expanded to re-release CO2? I suppose that energy to mi

Cool, but isn't it better to use naturally occurring alkaline minerals so that energy doesn't have to be expanded to re-release CO2? I suppose that energy to mine and pulverize minerals could exceed energy to cycle this battery. But minerals can potentially be put to dual use during or after capture, for example for construction or erosion control.