Feeds

Boffins hose down fiery Li-ion batteries with industrial lubricant

Non-flammable electrolyte found hiding in plain sight

Secure remote control for conventional and virtual desktops

As Boeing and Tesla both know, if you mistreat a lithium-ion battery, it can start a fire – which puts a premium on the search for non-flammable components. Now, US researchers say they've found a candidate electrolyte in an unexpected place.

When they're overcharged or overheated, the electrolyte in lithium-ion batteries can burn. However, it's hard to find a non-flammable electrolyte that doesn't degrade battery performance.

As the University of North Carolina at Chapel Hill explains, the chemical, perfluoropolyether, is already known to the world as a coating to stop marine life sticking to the bottom of ships.

They're proposing using perfluoropolyether (or PFPE) as a replacement electrolyte because it's both non-flammable and has good ion transport properties, the university says.

Also familiar as an industrial lubricant, PFPE came to the attention of a UNC chemist, Joseph DeSimone, who noticed that it has a “chemical structure to a polymeric electrolyte commonly studied for lithium-ion batteries” (from their abstract in PNAS, that electrolyte is alkyl carbonate). When his group also found that lithium salts could be dissolved in PFPE, and it remained non-flammable, “that's when we decided to roll with it”.

The PFPE electrolytes up to 200°C, the researchers say, have good electrolytic properties when coupled with the right electrodes (LBNL's Nitash Balsara worked on electrodes for this paper), and have a good cycling lifetime. ®

Next gen security for virtualised datacentres

More from The Register

next story
Vulture 2 takes a battering in 100km/h test run
Still in one piece, but we're going to need MORE POWER
TRIANGULAR orbits will help Rosetta to get up close with Comet 67P
Probe will be just 10km from Space Duck in October
Gigantic toothless 'DRAGONS' dominated Earth's early skies
Gummy pterosaurs outlived toothy competitors
Boffins ID freakish spine-smothered prehistoric critter: The CLAW gave it away
Bizarre-looking creature actually related to velvet worms
CRR-CRRRK, beep, beep: Mars space truck backs out of slippery sand trap
Curiosity finds new drilling target after course correction
'Leccy racer whacks petrols in Oz race
ELMOFO rakes in two wins in sanctioned race
What does a flashmob of 1,024 robots look like? Just like this
Sorry, Harvard, did you say kilobots or KILLER BOTS?
NASA's rock'n'roll shock: ROLLING STONE FOUND ON MARS
No sign of Ziggy Stardust and his band
Why your mum was WRONG about whiffy tattooed people
They're a future source of RENEWABLE ENERGY
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.