Nickel oxides are interesting in the context of LENR, as are iron oxides. Oxide films are expected on nickel electrodes and this could set the stage for unexpected electromagnetic effects such as the "densification" effect on gaseous hydrogen, which precedes LENR.
Here is the new citation for the discovery of (global) superconductivity in NiO https://physicstoday.scitation.org/doi/10.1063/PT.3.4337 Superconductivity - of a local variety as opposed to global - has been long suspected to be involved in LENR in some mysterious way. This suspicion goes back to the discovery of global superconductivity in palladium hydride (at very low temp) and the possibility that paired electrons could shield Coulomb repulsion, or some related M.O. which promotes LENR. This could happen via the densification of hydrogen as described by many researchers, notably Mills and Holmlid. A related effect to local SC is "transient" SC. Local superconductivity would occur in nanoparticles at much higher temperature, where spin currents or excitons predominate. There is also a potential connection between antiferromagnetism and local superconductivity which would indicate that strong antiferromagnetism is actually an expected end result of local superconductivity. The further connection of all of this to LENR would be that nanoparticles of materials which are SC at low temps will - at high temps - show both local superconductivity and strong antiferromagnetism which then operates to densify hydrogen gas as it accumulates on its surface. Here is the older report on using spin current to flip iron-based superconductors between superconducting and non-superconducting states. https://phys.org/news/2017-12-scientists-superconductivity-currents.html It is not difficult to imagine an overlap between a spin current mechanism and strong antiferromagnetism - but I have not been able to find an authoritative paper which makes that claim.
