Electric car batteries souped-up with fluorinated electrolytes for longer-range driving

ScienceDaily | 7/16/2018 | Staff
just-me (Posted by) Level 3
A peer-reviewed paper based on the research was published July 16 in the journal Nature Nanotechnology.

"We have created a fluorine-based electrolyte to enable a lithium-metal anode, which is known to be notoriously unstable, and demonstrated a battery that lasts up to a thousand cycles with high capacity," said co-first authors Xiulin Fan and Long Chen, postdoctoral researchers at UMD's A. James Clark School of Engineering.

Batteries - Times - Ability - Quality - Stream

The new batteries can thus charge and discharge many times over without losing the ability to provide a reliable and high quality stream of energy. Even after a thousand charge cycles, the fluorine enhanced electrolytes ensured 93% of battery capacity, which the authors call "unprecedented." This means that a car running on this technology would reliably drive the same number of miles for many years.

"The cycle lives they achieved with the given electrode materials and operation voltage windows sound 'unprecedented.' This work is a [sic] great progress forward in the battery field in the direction of increasing the energy density, although further tuning might be needed to meet various standards for commercialization," said Jang Wook Choi, an associate professor in chemical and biological engineering at Seoul National University in South Korea. Choi was not involved with the research.

Team - Batteries - Shape - Watch - Battery

The team demonstrated the batteries in coin-cell shape like a watch battery for testing and is working with industry partners to use the electrolytes for a high voltage battery.

These aggressive materials, such as the lithium-metal anode and nickel and high-voltage cathode materials, are called such because they react strongly with other material, meaning that they can hold a lot of energy but also tend to "eat...
(Excerpt) Read more at: ScienceDaily
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