LG Chem develops very flexible cable batteries, may leave mobile devices tied up in knots

LG Chem develops cableshaped flexible batteries, may leave mobile devices tied up in knots

The world is no stranger to flexible batteries, but they’ve almost always had to be made in thin sheets — that doesn’t amount to a long running time if you’re powering anything more than a watch. LG Chem has developed a flexible lithium-ion battery that’s not just better-suited to our bigger gadgets but could out-do previous bendable energy packs. Researchers found that coating copper wires with nickel-tin and coiling them briefly around a rod results in a hollow anode that behaves like a very strong spring; mating that anode with a lithium-ion cell leads to a battery that works even when it’s twisted up in knots. Join multiple packs together, and devices could have lithium-ion batteries that fit many shapes without compromising on their maximum deliverable power. Some hurdles remain to creating a production-grade battery, such as a tendency for the pack to shed a small amount of capacity whenever it’s put under enough stress. LG Chem is fully set on turning these cable batteries into shippable technology, however, and could ultimately produce mobile devices and wearables that really do bend to their owners’ every whim.

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LG Chem develops very flexible cable batteries, may leave mobile devices tied up in knots originally appeared on Engadget on Sun, 02 Sep 2012 16:03:00 EDT. Please see our terms for use of feeds.

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Korean carbon-coated lithium-ion battery could cut recharge times down to minutes

Korean, carboncoated lithiumion battery could cut recharge times down to minutes

Anyone who’s had to recharge an EV — or, for that matter, any mobile device with a very big battery — knows the pain of waiting for hours while a lithium-ion pack tops up. South Korea’s Ulsan National Institute of Science and Technology has developed a conduction technique that could cut that charging time down to less than a minute. By dousing the nanoparticle materials of the battery in a graphite solution that’s then carbonized, the researchers make a web of conductors that all start charging at once; current batteries have to charge towards the center slowly, like a not-very-edible Tootsie Pop. The immediate goal is to develop a secondary battery for an EV that could provide extra mileage in a matter of seconds. Here’s hoping that the Ulsan team’s fast-charging battery is more viable than others and spreads to just about everything — we’d love to have EVs and laptops alike that power up in as much time as it takes to fill a traditional car at the pump.

[Image credit: iFixit]

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Korean carbon-coated lithium-ion battery could cut recharge times down to minutes originally appeared on Engadget on Wed, 15 Aug 2012 19:31:00 EDT. Please see our terms for use of feeds.

Permalink The Register  |  sourceYonhap News Agency  | Email this | Comments

Fisker Karma owner returns from grocery run to find hybrid EV on fire

Fisker's Karma EV catches for the second time

Fisker Automotive can’t seem to catch break — because its Karma hybrid EV sedan has yet again become too hot. Similar to an incident last spring that left a model burnt to near smithereens and damaged its owner’s house, the Karma above caught fire in a Woodside, CA parking lot while powered off. Jalopnik was the first to get word of the incident, noting that the damage remained reserved to the front left of the vehicle, near where an exhaust is located. As the story goes, the owner found the vehicle emitting smoke after returning from a grocery run, prompting a call to Fisker and then the local fire department, which arrived as it was already engulfed in flames. In a statement to Wired’s Autopia, Fisker has been vehement to note that the damage appears to be far from where the car’s battery and sensitive electrical components are located, and that it wasn’t plugged in for a charge — furthermore, it’s already had correspondence with the owner and is actively investigating the matter with plans to issue an update when there are findings to share.

All that said, it remains to be seen whether the Karma’s battery system, supplied by A123 Systems (and the focus of previous recalls), had any role in igniting the car. Thankfully there were no reports of injuries from the incident, but as you can tell from the photo, the car was essentially totaled. You’ll find a video of the Karma in flames being quelled by firefighters after the break, along with the official statement by Fisker given to Autopia.

Continue reading Fisker Karma owner returns from grocery run to find hybrid EV on fire

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Fisker Karma owner returns from grocery run to find hybrid EV on fire originally appeared on Engadget on Sun, 12 Aug 2012 05:44:00 EDT. Please see our terms for use of feeds.

Permalink Wired Autopia  |  sourcewoody77atgmail (YouTube), Jalopnik  | Email this | Comments

Rice University researchers create spray-on battery, powered bathroom tiles

Rice University researchers create sprayon battery, powered bathroom tiles

Liquid solar cells are pretty neat, to be sure, but current-generating paint can be a hard color to match. Good thing, then, that researchers at Rice university have developed the perfect complement: a spray-on battery. By carefully layering five coats of specially formulated paint, the team has found a way to apply a thin coat of lithium ion storage to multiple surfaces, including glass, ceramics, steel and flexible polymers. Early experiments are promising — after applying the process to nine ordinary bathroom tiles, the painted batteries were able to power a small array of LEDs (spelling “Rice”) for six hours, consistently pumping out 2.4 volts of electricity. After 60 charge / discharge cycles, researches say the batteries retained most of their capacity. Neelam Singh, Rice graduate student and lead author of the team’s report, says the technology will only improve when coupled with modern methods. “Spray painting is already an industrial process, so it will be very easy to incorporate this into industry,” she said. “We really do consider this a paradigm changer.” Scope out the processes (and its fruits) for yourself after the break.

Continue reading Rice University researchers create spray-on battery, powered bathroom tiles

Rice University researchers create spray-on battery, powered bathroom tiles originally appeared on Engadget on Fri, 29 Jun 2012 01:29:00 EDT. Please see our terms for use of feeds.

Permalink CNET  |  sourceRice University, Nature  | Email this | Comments