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Join Date: Feb 2010
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Lithium Ion Polymer Battery Manufacturing Process

03/17/2010 1:00 PM

Hi,

I'm wondering if the aluminium foil in the manufacturing process of LIPOLY can be the on we all use at home , that is if it's thickness is Ok. Is there any problem using a thicker sheet as a cathode. The same question applies to the copper anode, that is using a 1 mm copper anode.

Best regards,

Bob

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#1

Re: Lithium Ion Polymer Battery Manufacturing Process

03/17/2010 1:36 PM

Hmmm. Does not a LiPo battery have, by definition, a cathode (or sometimes the anode) containing Lithium?

If no, where do the Li ions come from?

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Guru
Hobbies - DIY Welding - Don't Know What Made The Old Title Attractive... Popular Science - Weaponology - New Member United States - US - Statue of Liberty - 60 Year Member

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#2
In reply to #1

Re: Lithium Ion Polymer Battery Manufacturing Process

03/17/2010 1:54 PM

Ah... I see.

The Al and Cu are current collectors, not anode and cathode. See http://cr4.globalspec.com/comment/291021 for a discussion regarding this.

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#3

Re: Lithium Ion Polymer Battery Manufacturing Process

03/18/2010 6:40 PM

Hi Bob

The only problem I can see is the amount of active ingredient on the foil.your thickness and density before would be "X" and if the foil is thicker then you still have to get back to "X" for the final thickness. you probably have a size restriction of the jelly roll to fit into the can or container, so either put less active ingredient on the foil or compress it down so that the thickness is the same as the old electrode thickness.This will effect the density of the active at any rate for ion exchange from side to side of the separator.

hope this helps

DAR

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