I don’t know about kobo but with koreader you can use OPDS as a source. They also have a specific plugin for wireless calibre connection.

Note for koreader you can hook it up to kavita or audiobookshelf to download books wirelessly. I’m mainly annoyed by the manual calibre step. I have to do the same thing to remove drm, any idea if it can be automated?

Maybe a bit irrelevant but why is the article calling it “China’s battery“? I feel like if the researchers were from any other countries academy of science, say France, the title would have simply been something like “scientists discover new ways for fireproof battery”. Maybe it’d say French scientists or so, but not simply “France’s battery”?