View Single Post
Old 02-13-2017, 04:46 AM   #1 (permalink)
Master EcoWalker
RedDevil's Avatar
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,998

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 53.26 mpg (US)
Thanks: 1,711
Thanked 2,245 Times in 1,454 Posts
Flow battery development news

Harvard have developed an new type of battery that can be fully discharged and recharged for thousands of times:
Long-lasting flow battery could run for more than a decade with minimum upkeep | Harvard John A. Paulson School of Engineering and Applied Sciences

Key element is the application of ferrocene, which is usually insoluble and can only be used with highly toxic and reactive battery chemistries.
But by functionalizing ferrocene molecules the same way as the viologen, the team was able to turn an insoluble molecule into a highly soluble one that could be cycled stably.
“Because we were able to dissolve the electrolytes in neutral water, this is a long-lasting battery that you could put in your basement,” said Gordon. “If it spilled on the floor, it wouldn’t eat the concrete and since the medium is noncorrosive, you can use cheaper materials to build the components of the batteries, like the tanks and pumps.”
An older one, utilizing vitamins:
A battery inspired by vitamins | Harvard John A. Paulson School of Engineering and Applied Sciences

If you are to emit carbon dioxide anyway, it can be put to use like this:

This is not a battery in the usual sense but a nice 'free' power harvesting mechanism anyway.

2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.19 Gmeter or 0.1 Mmile.

For confirmation go to people just like you.
For education go to people unlike yourself.

Last edited by RedDevil; 02-22-2017 at 02:55 AM..
  Reply With Quote
The Following User Says Thank You to RedDevil For This Useful Post:
freebeard (02-21-2017)