Battery research could triple range of electric vehicles

New research at the University of Waterloo could lead to the development of batteries that triple the range of electric vehicles.

The breakthrough involves the use of negative electrodes made of lithium metal, a material with the potential to dramatically increase battery storage capacity.

"This will mean cheap, safe, long-lasting batteries that give people much more range in their electric vehicles," said Quanquan Pang, who led the research while he was a PhD candidate at Waterloo.

The increased storage capacity, or energy density, could boost the distance electric vehicles are able to travel on a single charge, from about 200 kilometres to 600 kilometres.

In creating the technology, Pang and fellow researchers, including supervisor Linda Nazar, a professor of chemistry and chemical engineering at Waterloo, had to overcome two challenges.

The first challenge involved a risk of fires and explosions caused by microscopic structural changes to the lithium metal during repeated charge-discharge cycles.

The second involved a reaction that creates corrosion and limits both how well the electrodes work and how long they last.

Researchers solved both problems by adding a chemical compound made of phosphorus and sulfur elements to the electrolyte liquid that carries electrical charge within batteries.

The compound reacts with the lithium metal electrode in an already assembled battery to spontaneously coat it with an extremely thin protective layer.

"We wanted a simple, scalable way to protect the lithium metal," said Pang, now a post-doctoral fellow at the Massachusetts Institute of Technology. "With this solution, we just add the compound and it works by itself."

The novel approach paves the way for electric vehicle batteries that enjoy the benefits of lithium metal electrodes - greater storage capacity and therefore greater driving range - without comprising safety or reducing lifespan.

New test procedure for developing quick-charging lithium-ion batteries
Munich, Germany (SPX) Dec 14, 2017
When lithium-ion batteries are charged too quickly, metallic lithium gets deposited on the anodes. This reduces battery capacity and lifespan and can even destroy the batteries. Scientists at the Technical University of Munich (TUM) and the Forschungszentrum Julich have now presented a process that, for the first time ever, allows this so-called lithium plating process to be investigated directl ... read more

Related Links
University of Waterloo
Powering The World in the 21st Century at Energy-Daily.com

Thanks for being there;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Monthly Supporter
$5+ Billed Monthly

SpaceDaily Contributor
$5 Billed Once

credit card or paypal