Public rail systems are harvesting and storing electricity from regenerative braking with the hope of making a profit on power sold back to the grid
It seems like every day we hear about another incremental breakthrough in battery technology. By tweaking existing battery chemistries or inventing new chemistries altogether, university researchers and startup companies have managed to increase the energy density, cycle life, energy efficiency, and safety of numerous potential grid battery technologies.
Last week, Stanford University researchers unveiled a new aluminum-ion battery chemistry with the unique ability to charge or discharge in less than a minute.
Electric cars, no matter how sexy, still have a battery problem
An air-conditioned cabin is the best way to drop a car's fuel efficiency on a hot day. This is true of electric vehicles (EV) as much as it is for gas-guzzlers.
Researchers discover how charge transfer works