It's an old well-known proposal to electrolyze molten oxides, isn't it? There is even hope for wide industrial applications on Earth of such technology for coal-free metal production. Though I don't see a particular novelty here and it will be quite hard to pull-off on a moon base (after all, you have to work with high-temperatures and the process is quite power hungry), I am happy to see that work continues in this field.
In space you have a reverse problem: it's difficult to dissipate heat. It's a bit easier to do on moon surface than on an orbital station, but regolith has a limited thermal conductivity, which could be insufficient for an industrial process releasing a lot of waste heat. For obvious reasons we can't simply build wet cooling towers as we usually do on Earth.
