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Not the only problem. Internal combustion engines use oxygen from the air, so vehicles do not have to carry it. The reduction in mass is substantial, and direct
by sobriquet9 3y ago
Not the only problem. Internal combustion engines use oxygen from the air, so vehicles do not have to carry it. The reduction in mass is substantial, and directly translates to less tire and road wear. EVs carry all their chemistry all the time.
- dredmorbius 3y agoAnd the batteries which don't actually gain mass as they discharge. "Metal-air batteries", or a "metal-air electrochemical cell", as Wikipedia prefers to call it, rely on atmospheric oxygen as the cathode which is bound to the battery during discharge, increasing total mass. <https://en.wikipedia.org/wiki/Metal%E2%80%93air_electrochemical_cell https://en.wikipedia.org/wiki/Metal%E2%80%93air_electrochemi...>