Starting in the mid-1990s, iridium-tipped plugs appeared. Iridium is even harder than platinum, so these plugs were intended to last longer. They are also claimed to slightly increase combustion ...
It usually occurs in nature as elemental platinum, or is alloyed with small quantities of other metals, especially iridium. The most widespread role of platinum is as a catalyst, in particular in ...
PEM electrolyzer: a fast-growing technology The green hydrogen, obtained from water electrolysis fed by renewable sources, is ...
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