Is there an alternative to platinum yet? Fuel cells sound really neat, and I had no idea you could actually by your own until a couple days ago. But the estima

Is there an alternative to platinum yet? Fuel cells sound really neat, and I had no idea you could actually by your own until a couple days ago. But the estimate of a small continuous use unit needing to have the catalyst replaced up to annually seems to make them a novelty for now (the existing units that is). Interested in knowing more if you keep up with it though.