https://www.futura-sciences.com/science ... ible-8495/
Researchers at SLAC National Accelerator Laboratory (USA) are now considering a solution based on a cheap catalyst. A fine black powder consisting of nanoparticles of cobalt phosphide deposited on simple carbon.
Beyond the cost of the system, there is also the question of its robustness. Because other inexpensive catalysts have already been tested. "But so far, only at the laboratory scale," says Thomas Jaramillo, director of the laboratory. "This is to my knowledge the first time a catalyst shows its effectiveness on an industrial scale. "