Walt Mills for Phys.org: The energy-storage goal of a polymer dielectric material with high energy density, high power density and excellent charge-discharge efficiency for electric and hybrid vehicle use has been achieved by a team of Penn State materials scientists. The key is a unique three-dimensional sandwich-like structure that protects the dense electric field in the polymer/ceramic composite from dielectric breakdown. Their results are published today (Aug. 22) in the Proceedings of the National Academy of Sciences (PNAS).
"Polymers are ideal for energy storage for transportation due to their light weight, scalability and high dielectric strength," says Qing Wang, professor of materials science and engineering and the team leader. "However, the existing commercial polymer used in hybrid and electric vehicles, called BOPP, cannot stand up to the high operating temperatures without considerable additional cooling equipment. This adds to the weight and expense of the vehicles." Cont'd...
Stephen Edelstein for GreenCarReports: Tesla Motors was the first carmaker to branch out from selling electric cars to offering standalone battery packs for energy storage, but others have followed the company's lead.
Mercedes-Benz and Nissan have stated their intentions to enter the energy-storage market, and now BMW is jumping on the bandwagon as well.
At the Electric Vehicle Symposium & Exhibition 29—known as EVS29—held this week in Montreal, Canada, BMW unveiled an energy-storage system that uses battery packs from i3 electric cars.
Developed in concert with German firm Beck Automation, BMW's system is designed to use either new battery packs or "second-life" packs that have degraded too much for continued use in electric cars.
Battery packs that can no longer function in cars still have enough usable capacity for energy storage.
BMW has tested the concept over the past five years with various research projects, including a 2013 "micro-grid" project with the University of San Diego, and a 2014 collaboration in Germany with utility Vattenfall to use electric-car battery packs as buffer to help stabilize electricity grids. Cont'd...
Tom Randal for Bloomberg Business: With all good technologies, there comes a time when buying the alternative no longer makes sense. Think smartphones in the past decade, color TVs in the 1970s, or even gasoline cars in the early 20th century. Predicting the timing of these shifts is difficult, but when it happens, the whole world changes.
It’s looking like the 2020s will be the decade of the electric car.
Battery prices fell 35 percent last year and are on a trajectory to make unsubsidized electric vehicles as affordable as their gasoline counterparts in the next six years, according to a new analysis of the electric-vehicle market by Bloomberg New Energy Finance (BNEF). That will be the start of a real mass-market liftoff for electric cars.
By 2040, long-range electric cars will cost less than $22,000 (in today’s dollars), according to the projections. Thirty-five percent of new cars worldwide will have a plug. Cont'd...
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