re batteries, per watch & brief in in-tray
On 4 Mar 2017, at 7:13 AM, M wrote:
Or perhaps increase range by 50% to about 400 miles, yet cut the weight (and cost) of a battery in half.
If the battery today costs $11,000 alone, that would push the cost under $6,000.
M
On Sat, Mar 4, 2017 at 7:11 AM, M wrote:
If true, and easily applied, this changes the game for electric cars....three times the density.
That would imply that a Tesla could double its range (500 miles?) but cut the battery (and its weight) by 1/3rd....
M
electrek.co
In collaboration with senior research fellow Maria Helena Braga, the 94-year-old scientist published a recent paper in the journal Energy & Environmental Science that claims to solve some of those problems.
Goodenough said about the findings (via the University of Texas at Austin):
“Cost, safety, energy density, rates of charge and discharge and cycle life are critical for battery-driven cars to be more widely adopted. We believe our discovery solves many of the problems that are inherent in today’s batteries,”
They have actually produced the new solid-state cells with “glass electrolytes that enable the use of an alkali-metal anode”. The materials overcome the dendrite problem that comes with fast-charging the cells.
It could also enable cost reductions in mass production.
Braga said about the new electrolyte:
“The glass electrolytes allow for the substitution of low-cost sodium for lithium. Sodium is extracted from seawater that is widely available,”
They are making impressive claims about the prototype cells that they produced with this new technology. They say that it enables “at least three times as much energy density”, demonstrated “more than 1,200 cycles with low cell resistance”, and can operate “from -20 degrees Celsius to under 60 degree Celsius.” |
