On 3/1/2014 10:04 AM, John Clark wrote:
On Sat, Mar 1, 2014 at 12:10 AM, Chris de Morsella <[email protected] <mailto:[email protected]>> wrote:>> Who cares about gravimetric density? > Evidently you don't; that much is clear. The automobile companies that are moving towards electric vehicles care -- and care a lot.Why? They care about weight and how much energy it can store, but I don't see why they'd care how dense it was. Well OK if it had the density of styrofoam there could be a problem finding a place to put 200 pounds of it in a small car, but that is not a realistic issue; as long as the battery was reliable and cheap and stored lots of energy for its weight I don't see why car makers would much care if it was as dense as aluminum or as dense as lead.
As I recall the problem with zinc-air batteries is that the peak available current is too low. It doesn't work for an automobile to have a lot of energy available but very little power.
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