maybe, the cathode becomes coated with many micro and nano bubbles, raising its surface electrical resistance -- then micro and nano explosions on the surface, which quickly becomes much more rugged with tractal geometry, expose the metal directly to the electrolyte, with reduced average electrical resistance -- check this with microphones able to hear very brief, tiny micro and nano explosions --
can this be done with unusual electrolytes at a few degrees above absolute zero? -- then the explosions might be more easily detectable as sounds and light flashes -- can verify any subtle nucear reactions -- strive to set up micro and nano scale experiments to allow detection and precise measurement of individual events ...