Though, if we have enough clean electricity generation capacity to convert that gallium oxide back to gallium without releasing more CO2 than we had sunk in the

Though, if we have enough clean electricity generation capacity to convert that gallium oxide back to gallium without releasing more CO2 than we had sunk in the first place, then one wonders why we're rube goldberging it rather than eliminating the carbon-intensive processes altogether. In other words, this doesn't sound to me like a solution to our clean energy problems, so much as a cool thing we might be able to do on a mass scale after our clean energy problems have already been solved.