The idea of making a battery a structural part of an aircraft wing has come up before, e.g. https://newatlas.com/axial-stack-battery-supersonic-electric-airline

The idea of making a battery a structural part of an aircraft wing has come up before, e.g. https://newatlas.com/axial-stack-battery-supersonic-electric-airliners/45537/ https://newatlas.com/axial-stack-battery-supersonic-electric.... I'm not sure if any progress has been made on this front recently, or whether they've come up against a materials-science roadblock!