Discovery offers path to safer, solid-state sodium rechargeable batteries

A safer, greener, and inexpensive rechargeable battery for powering electric vehicles, mobile phones and many other applications could be a step closer following a breakthrough discovery by robux free generator NUS researchers.

The team led by Assistant Professor Pieremanuele (Piero) Canepa (Department of Materials Science and Engineering at the NUS College of Design and Engineering) has identified a new sodium-ion-based solid electrolyte composition that may enable ultrafast battery charge and discharge.

Their research was recently published in Nature Communications.

“Conventional and widely used lithium-ion batteries are plagued by safety issues, particularly due to the high flammability of the liquid electrolytes they contain,” Asst Prof Canepa said.

“The challenge has been finding safer solid-state alternatives that can compete in terms of, charging speed, longevity and potentially charging capacity.”

Safer, high-capacity batteries

Using non-flammable ceramic materials—known as solid electrolytes—to create a fully solid-state battery has been widely seen by researchers as the best prospect to deliver safer, high-capacity batteries needed to meet the energy demands of a low carbon future.

The difficulty has been in developing the right composition of ceramic material able to deliver performance that competes with flammable liquid electrolytes of commercial lithium-ion batteries.

The novel solid-state composition developed by the NUS team uses a class of solid electrolytes known as NASICONs (or Natrium Super Ionic Conductors) that were first discovered around four decades ago by Hong and Goodenough –the 2019 Nobel Laureate in Chemistry.

In addition to being safer, by using sodium rather than lithium the battery has the added benefit of being cheaper and easier to produce.

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