Natural Science Forum / Chemistry / Electrochemistry / January 2004

I have conducted some test with DC at present and will move on to AC (hence
the request for suggestions).  I am concerned with Cu+Aq_contamination.  The
simple tests with DC produced some interesting results and very much
expected ones.  The growth of dendrites occurred in ...

A company in china, through a third party, is telling me that their cell
manufacture process, for cylindrical A size NIMH cells does not require a
vent.
Is this possible?

Having taken a graduate electrochemistry class from Allen Bard and worked
with conductivity probes for years, I thought I knew everything!  I am
currently working with an electrical engineer who looks at the challenge of
measuring conductivity in ways that are quite different from ...

Has anyone found a definitive answer to whether it's best to keep a pcs
phone battery (or any Li-ion battery for that matter) topped off or wait
until it's say, 2/3 discharged? What are the effects of a deep discharge on
a Li-ion battery?

Where (if anywhere) can I get information on catastrophic failures in the
field, of NIMH batteries, hopefully linking back to the manufacturer?
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A: Because it messes up the order in which people normally read text.

Well actually the dummie is me.  My math skills are not good enough to apply
the Nernst equation to the electrolysis of water. (I think that's what I
need)  I am willing to pay for this answer if you can send it to me in a
file that I can use to make a graph showing the results I ...

Hi sci.chem.electrochem.battery,
Not sure if this the right place to ask such an uninformed question.
I have a dozen NiMH 8.4V 2600mAH batteries, which have 12 cells in each
which retain no charge.  They are about 6 years old, is there any hope

I recently found a forgotten toy that had Pure Energy alkaline rechargeables
in it. They had been there for about a year and were long dead. Instead of
the goopy liquid stuff I expected, the battery compartment was filled with
some powdery white crystalline material. I wrote to the ...

What is the temperature dependence of the current in amperometric measurements
in potable water:
- water temperature between 10 and 60 degrees centigrade
- measurement of free chlorine at +0.1 V vs. Ag/AgCl

Does a lead acid battery have a memory?
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When charging lead acid batteries on a constant current charger in parallel,
is current on the charger meter evenly divisible by the number of batteries
that each battery receives?
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There is an irritating poster
who yells and screams at helpful posters!
Clue: he drives a Chevy!
He also replies to his own posts.

Why a battery doesn't store enough charge to start a car in hot weather?
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Why does a battery only store a charge to start a car in sub zero weather?
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I am trying to look at different slants to this question and I would like
some input from anyone out there who would like to.
One idea is that if an AC bias is applied to a cell (such as one with two
copper electrodes and de-ionised water) then Under AC an ion will move back