I have a suggestion:
There are institutes like Fresenius which offer all sorts of physical measurements as their service to private people.
What do you think about crowd funding a mass spectrometric measurement of the Nickel/Lithium that was left after A. Parkhomov's calorimetric measurements?
These institutes have the necessary equipment and know-how to do such a measurement.
Such a spectrum would be a proof that cannot be denied by the scientific community.