Lithium battery and fire

Discussion in 'Chemistry' started by timojin, Nov 18, 2016.

  1. timojin Valued Senior Member

    Messages:
    2,917
    What causes fire in the battery ?
     
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. billvon Valued Senior Member

    Messages:
    12,670
    1) Short circuits that provide an ignition source (a spark) and heat
    2) Aqueous electrolyte that decomposes to oxygen
    3) Flammable materials (plastic separator, graphite anode)
     
  4. Google AdSense Guest Advertisement



    to hide all adverts.
  5. timojin Valued Senior Member

    Messages:
    2,917
    How what kind of short do you refer ?
    Do they use aqueous electrolyte ?
     
  6. Google AdSense Guest Advertisement



    to hide all adverts.
  7. DaveC426913 Valued Senior Member

    Messages:
    6,216
     
  8. billvon Valued Senior Member

    Messages:
    12,670
    Shorts caused by dendrite growth (caused by fast charging) material defects or mechanical damage.
    Yes.
     
  9. timojin Valued Senior Member

    Messages:
    2,917
    I had an impression they use methylcarbonate
     
  10. billvon Valued Senior Member

    Messages:
    12,670
    Yes, they use materials like ethylene carbonate, dimethyl carboate and diethyl carbonate. All those contain oxygen. Note that this is just the solution that the lithium salts are dissolved in; the salts are the active material.
     
  11. timojin Valued Senior Member

    Messages:
    2,917
    I am not sure water is really necessary . In the past as I worked with polyglycols some if them dissolve chloride salts so I would not be surprising if the salts have to be solubilised in water . I assume the main solvent is methyl carbonate, but welcome to contradict me if you have the real information . I am willing to learn .
     
  12. billvon Valued Senior Member

    Messages:
    12,670
    It's not. The organic solvents above do not contain water, for example. Lithium ion batteries are made with both. Modern batteries generally use organic solvents like ethylene carbonate.
     
    ajanta likes this.
  13. timojin Valued Senior Member

    Messages:
    2,917
    So what causes fire in lithium battery ?
     
  14. Ophiolite Valued Senior Member

    Messages:
    9,232
    Refer to posts 2 and 4. If you are having problems with the English language there is a section for that.
     
  15. timojin Valued Senior Member

    Messages:
    2,917
    I don't think I have problem. Tell me do you have a problem with this explanation

    #1 aqueous solution will not burn. That is for your criticism # 2
    # 2 dendrite grow in metallic surfaces.

    Now I believe during charging or overcharging the cobalt oxide anode can release oxygen and in presence of organic solvent a fire ca be initiated in the cell
     
  16. karenmansker HSIRI Banned

    Messages:
    638
    Overall cause? Trying to cram too much energy, too quickly, into a limited capacity storage device . H-m-m-m-m-m- . . . . reminds me of another similar circumstance that happened 13.5 by (or so) ago . . . . . called "Big Bang! tee hee)
     
    ajanta likes this.
  17. Beaconator Registered Senior Member

    Messages:
    427
    Lithium is the power source and has many different isotopes. Most are radioactive. So while some materials are the source for ignition the cause is the lithium itself.

    I recommend adding iridium to key points if you are attempting to make your own battery. Good for sunglasses

    Arnnett
     
  18. timojin Valued Senior Member

    Messages:
    2,917
    Why are you mentioning good for sun glasses
     

Share This Page