It was my understanding that Texaco bought the patents, shelved them, and retain them.
Sent from my iPhone > On Oct 30, 2022, at 8:51 PM, Mark Abramowitz via EV <ev@lists.evdl.org> wrote: > > Don’t forget that recycling of lead acid batteries contaminates the > communities around them, creating major health problems to those near them > and downwind. > > > > - Mark > > Sent from my Fuel Cell powered iPhone > >> On Oct 30, 2022, at 1:56 PM, Lee Hart via EV <ev@lists.evdl.org> wrote: >> >> Peri Hartman wrote: >>>> There's been a move back to LiFePo because it doesn't use cobalt. What >>>> else can be done? >> >> EV List Lackey wrote: >>> Nickel metal hydride? >> >> There are actually lots of rechargeable battery technologies that could be >> used. Each has different strengths and weaknesses. >> >> It's unfortunate that manufacturers tend to prefer a monoculture. "One thing >> to rule them all". But anything that you try to apply to 8 billion people is >> bound to cause unforeseen problems. Different applications should really use >> different solutions. >> >> Lead-acid is cheap, and widely recyclable. But it's relatively heavy and has >> a low energy density. It still makes sense for short-range EVs like golf >> carts, fork lifts, scooters, etc. Also, don't forget that virtually every >> ICE is still using lead-acids. >> >> Nickel-based batteries (nickel-iron, nickel-cadmium, nimh) have higher >> energy density and longer life, and the materials are relatively abundant. >> Nickel is expensive, but fairly easy to recycle (though it's not being >> widely done for batteries). >> >> Lithium-based batteries have the highest energy density, but are expensive, >> less safe, and (at least for the present) not being recycled. >> >> And, there are lots of other chemistries that could be used. We should be >> exploring *every* option; not just blindly picking one. >> >> Lee Hart >> >> -- >> "#3 pencils and quadrille pads." -- Seymour Cray, when asked >> what CAD tools he used to design the Cray I supercomputer >> -- >> Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com >> >> -- >> This email has been checked for viruses by Avast antivirus software. >> www.avast.com >> _______________________________________________ >> Address messages to ev@lists.evdl.org >> No other addresses in TO and CC fields >> HELP: http://www.evdl.org/help/ >> > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
