Honda’s Fluoride-Ion Battery Breakthrough Could Allow For Batteries With 10x More Energy Density

The limitations of lithium-ion batteries are well known at this point, so a number of automakers are exploring alternatives such as lithium-air technology.

Honda is taking a different approach as their scientists have teamed up with researchers from the California Institute of Technology and NASA’s Jet Propulsion Laboratory to develop a new battery chemistry that promises to be a significant improvement over current battery technology.

While the details will probably make your eyes glaze over, Honda says the research paves the way for “high energy-density batteries capable of meeting rapidly growing energy storage needs by overcoming the current temperature limitations of fluoride-based battery technology and by demonstrating the room-temperature operation of fluoride-ion based energy cells.”

Putting aside the science mumbo jumbo for a minute, the chief scientist of the Honda Research Institute said “Fluoride-ion batteries offer a promising new battery chemistry with up to ten times more energy density than currently available lithium batteries.” That’s a huge improvement and fluoride-ion batteries have the potential to be significantly lighter than lithium-ion batteries while also delivering a vastly improved range when used in electric vehicles.

Dr. Christopher Brooks also noted fluoride-ion batteries are safer than lithium-ion batteries as they don’t suffer from overheating issues. Furthermore, the batteries are more environmentally friendly than today’s lithium-ion batteries.

Of course, fluoride-ion batteries have their drawbacks as Honda noted current solid-state fluoride ion-conducting batteries need to operate at temperatures above 302 F° (150° C) to make the electrolyte fluoride-conducting. This has been a “significant challenge,” but the research team found a way to create a fluoride-ion electrochemical cell capable of operating at room temperature.

Honda says this breakthrough was achieved by using a “chemically stable liquid fluoride-conducting electrolyte with high ionic conductivity and a wide operating voltage.” The scientists also developed a unique electrolyte using “dry tetraalkylammonium fluoride salts dissolved in an organic, fluorinated ether solvent.” This is paired with a composite cathode which features a core-shell nanostructure made of copper, lanthanum and fluorine. Thanks to this setup, the researchers were able to successfully demonstrate reversible electrochemical cycling at room temperature.


  • Finkployd

    « Could » be awesome !!

  • LeStori

    With the Chinese trying to monopolise Lithium, it is important to develop different and better batteries that do not rely on Lithium.

  • PhilMcGraw

    I wonder how this will compare to Toyota’s work on solid state batteries that promise a higher density in a smaller package than current battery technology. It sounds like they are offering similar benefits.

  • Dude

    “While the details will probably make your eyes glaze over…”

    Are you kidding. New battery technology is always exciting news and important to pretty much everyone

  • S3XY

    Uh oh, better watch out Tesla!

    • Honda NSX-R

      You know it just got intense when a Tesla fan tells Tesla to watch out.

  • irvinsky

    well,the fluoride should help with preventing battery decay..

    • Ronald Roman

      Colgacell? Energate?

  • Ben

    ugh…all this battery talk reminds me why I had such a hard time passing chemistry! Just tell me when we have batteries that I absolutely don’t have to worry about range or cold weather robbing me of miles.

  • stelvio

    Stop those high fallutin tech talks and just give us a ballpark on when it’s going into production

    • khc

      ‘Sounds like it’s only in the earliest stages of development. It seems like it has been quite a while since reading about “solid state” batteries, which were supposed to yield performance equal to this fluoride-ion technology, that we were going to see in vehicles by around 2021. Lots of talk, then no progress reports.

  • joeybuttafucco

    now that is cool. I hope it is not patented by Honda. want to see this in a 911, though I am not sure I could live with myself knowing there was honda technology in the bowels of my baby!

    • G82FS

      Remember they worked with JPL and NASA on this so you could say it has rocket technology!

  • Dennis James

    Finally there is real hope for electric vehicles. But also for smartphones and smartwatches! 🙂

  • jon4uu

    Please Honda, fix that car. I hurts my eyes to look at it. Please

    • Six Thousand Times

      But you looked and that is the point.

      • G82FS

        But did not and never would buy so what is the end benefit to Honda?

  • D3X

    How many times are we disappointed with the words “Up to”.

  • Ronald Roman


  • Six_Tymes

    interesting hopeful news

  • Banesto Highland

    Here’s the kicker;

    “Of course, fluoride-ion batteries have their drawbacks as Honda noted
    current solid-state fluoride ion-conducting batteries need to operate at
    temperatures above 302 F° (150° C) to make the electrolyte
    fluoride-conducting.”….”has been a “significant challenge,””…indeed.

    • G82FS

      “but the research team found a way to create a fluoride-ion electrochemical cell capable of operating at room temperature.”

      Finished the quote for you to include the important part… I did read elsewhere that this has only been accomplished under laboratory conditions. It will be a major breakthrough if they can duplicate it in real world environments.

  • Cyrus Ramsey

    It’s exciting and all, but…who really needs a car with 3000km of range? And how long would that take to charge? It’d be cool if they could do that, but 300km is plenty for most people. Not saying they shouldn’t keep trying to make cars with longer range, but people shouldn’t be letting that be the factor that stops them from buying an EV.

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