Materials are not the cause of superconductivity in LENR. The cause is topology. Nanowire is thin enough to produce ballistic electron flow that will not permit surface imperfection to produce resistance free electron flow. That nanowire covering on the surface of the nickel microparticles are superconducting. The Parkhomov powder that has a large level of carbon content on the surface of the nanowire might well be producing carbon nanotubes that conduct current flow up to the melting point of the microparticle. It is the shape of the material not the makeup of the material that counts in producing superconductivity.
https://en.wikipedia.org/wiki/Ballistic_conduction Long thin strings of hydrogen rydberg crystals will also form in the reactor gas envelope to add 1 dimensional nanowire to the topological superconducting circuitry on the surface of the microparticles.
