Lithium Polymer Battery - Under the Hood

Started by sooraj.palakkad, January 07, 2015, 12:09:19 PM

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sooraj.palakkad

A conclusion -
Cathode : thin Coper foil covered in thin layer carbon paste
Anode   :  thin Aluminum foil covered in a thin layer of the slurry of carbon and Lithium

Electrolyte : Thin Porous semi permeable Polymer membrane

The Internal structure comprises of mostly solid.
RC Hobbyist and an Aerial Cinematographer..

sooraj.palakkad

The material which covers all these up is just a kind of hard plastic !! Initially I thought it will be heat resistant or what:giggle:
RC Hobbyist and an Aerial Cinematographer..

AnjanBabu

You've got balls of titanium alloy holding that lipo bare handed like that.
I wore a full face helmet and leather jacket to rip off a cell from a 3s cut by a prop.

PS, It's not at all safe to cut open battery packs like that without a controlled atmosphere and safe disposal methods for environmental and health hazard reasons; Lithium poisoning is not a joke.  Don't ever do that. The internet has enough videos and pictures to satisfy such curiosities.
Mechatronics engineer . Hopeless realist

anjanbabu.wordpress.com

chintal

@SOORAJ why do you always have to do things that are not supposed to be done it is dangerous
And if you still want to continue doing it please dont post on the forum as ten other curious readers may attempt to do it
PLEASE POST RESPONSIBLY
And if you dont know you can ask people before doing it
Health Hazard is a big NO
Rcmumbai.com
Passion is Airborne

sooraj.palakkad

RC Hobbyist and an Aerial Cinematographer..

sooraj.palakkad

Composition Information on Components

Component                  Approximate Percent of Total Weight

Aluminum                                         2-10%
Aluminum Packaging Foil                      5-15%
Carbon (Various Forms)                      10-30%
Copper                                             5-15%
Lithium Cobalt Oxide                           20- 40%
Lithium Salts                                     1-5%
Nickel                                               0.5-5%
Organic Carbonate                              10-25%
Polymer                                            3-10%


Disposal Procedure of Lithium Ion or Generally Lithium composition Batteries :
LITHIUM-ION Polymer cells and batteries contain no toxic metals, only naturally occurring
trace elements How ever, the cell/pack must be fully discharged or Inactive . It is advisable to consult with local authorities as disposal regulations may vary dependent on location.
RC Hobbyist and an Aerial Cinematographer..

sooraj.palakkad

When a Lithium Battery Heats up abnormally, or has got on flames - best nearby extinguisher is Water itself (Had a confusion in this part as Lithium as an alkaline metal, in pure form reacts easily with water - but In a Lithium composition Battery/Cell there is no Pure form Lithium metal)

Extinguishing Media: Dry chemicals, water.
Fire-Fighting Procedures:
Use self-contained breathing apparatus and protective clothing.

Toxic gases (HF, PF6) will be formed if cells or battery are involved in a fire. Cells or battery may flame or leak potentially hazardous organic vapors if exposed to excessive heat, fire or
over-voltage conditions. Damaged or opened cells or batteries may result in rapid heat and
the release of flammable vapors.
RC Hobbyist and an Aerial Cinematographer..