A Japanese company called Eamex claims it has found a way [JP] to increase the life of high-capacity lithium-ion batteries (that can be used in electric vehicles). Eamex says the new batteries can be charged and discharged over 10,000 times. Apparently, they can last about 20 years, too.
The main idea is to stabilize the electrodes and prevent the deterioration of tin, making the batteries withstand repeated charges. The batteries have a negative electrode that incorporates a tin-coated resin and accumulates lithium ions coming from the positive electrode. The positive electrode is made of silicon and tin and swells while generating the ions.
As a result, the repeated charging and discharging causes the binding between particles in the tin to weaken, but Eamex’s technology helps to effectively maintain the bonding among those particles.
The company says it plans to introduce a lithium-ion battery with a power density of 10,000 W/kg by the end of this year. The battery could be used to power electric scooters, for example. Eamex also claims batteries based on their technology have “extremely positive” cost effects (without giving specific details), which isn’t hard to believe given their lifespan.
Via The Nikkei [registration required, paid subscription]
This technology is truely amazing. The sizes of all our electrical products could shrink, even ideas of battery using products previously unheard of will emerge.
Moors Law comes to batteries now- Fantastic- Oops on the battery makers now- new biz plan and built in obsolescence model is gone- shucks
Watts per kg is simply wrong – should be Joules per kg.
They use “10000W/kg” in their information:
http://www.eamex.co.jp/capa2.html (JP)
It’s not wrong. Watt is unit of power. Joule is unit of energy. The measure is power density, not energy density.
A few months ago I read a slew of articles (not all on TC) saying that battery technology was not keeping up with everything else. Battery tech has been an obstacle for years. I was shocked last weekend when looking for a new laptop that 3.5 hours was about average for all laptops. 3.5 hours is ridiculous! Smaller, more powerful, more efficient, longer lasting batteries are something this word needs desperately.
3.5 in ideal conditions and with minimum usage.
Usually a battery lasts 1h at most.
New ARM processors are the only viable solution to increase battery live (+6 hours at least)
That’s amazing. But then that means all of these battery companies will be put out of business.
And that would apply to any type of product too. Why do you think everything is made so cheap and shoddy in this day and age? It’s a companies way of making money.
What about energy? Is it Li-Ion ultra cap or battery? Plus, I never heard anything about Li-Tin chemistry.
Hey………Joules/sec is Watt………and power density is always taken as KW/Kg or KW/L..by the way 10KW/Kg is pretty good