Natural Science Forum / Chemistry / Electrochemistry / June 2004

Would Li-ion make a good hybrid car battery?
Would it need to be kept warm somehow to avoid below freezing?
Why did not Toyota consider these when they went with their NiMH.
I have heard Li-ion has the potential to be lower cost and higher

hey, I wonder if it's possible to drill a small hole in an alkaline battery so
that when you try to recharge them the gases and biproducts can escape safely
(and you probably need to add water too, since hydrogen and oxygen will
escape). Any ideas? I know it sounds stupid to ...

Do all batteries only tolerate so much deep cycling?
I ask because I think the way the NiMH batteries in the Prius work,
they are never really cycled very far down.  Because of this they last
for years.

A couple of years ago NimH penlites had a capacity of around 700 mAh, then
they went thru 1200, 1800, 2100 and yesterday I held the first 2400 mAh
penlites in my hand! It is truly amazing! How is this done?
I assume by creating more electrode surface area within the battery?

For some product we are developing, we need to create carboxylic
groups on some carbon electrode surface. Since I am not a chemist, I
was wondering if some can give me some suggestions on how to acheive
this. I prefer a wet chemistry (soaking and/or washing in certain

I use a mobility scooter w/two group size U1 (pseudo?) deep-cycle
(either AGM or gel) batteries: 12V, 32ah, wired in series.
On road trips, away from AC, I need a way to recharge the batts [which
can

I am currently developing a laboratory for Walla Walla College that
will study the interaction between fuel cells and batteries. I am
interested in Panasonic EV's NiMH Prismatic Module because it is
already being used in the Prius. In order to use these batteries as an

I've been reading alot of the EV related posts and I'm disappointed to
see that the trolls and less knowledgable posters are trying to
convince people of the impracticality of electric vehicles.  If the
major automobile manufacturers wanted to sell electric vehicles, they

Don't you hate those homeless people who ask to exchange 4 quarters for a
dollar, and it's only after they're out of reach that you realize those 4
"quarters" were actually foreign coins they apparently got from a nearby bank
that were worth considerably less? I got suckered by this ...

If you have two Cu electrodes then n1-n2=0.  Does this mean that there is no over potential value when using two Cu electrodes?
Wayne

What are the chemical differences between regular non-rechargeable alkaline
batteries (Energizer or Duracell) and rechargeable alkaline batteries
"Renewal"? Why can't regular alkaline batteries be recharged as efficiently and
safely as Renewal?

I need to design a pack that has a 4 series, 2 parallel
configuration.  I am using CR123A cells.  What do I have
to do to make sure that this is safe?
Best regards

hey I wonder if anyone has ever committed a crime of battery using a set of
batteries (for example, hitting someone with a bag full of batteries, or using
lots of batteries in series to try to electrocute someone). Any references?

I have some extra NiMH batteries, 1.5 v. I have some devices that use
these and charge them in-unit, so it's not practical to swap out the
batteries. IOW, I'm using the batteries that are in the units and
following the recommended practice of discharging and then recharging

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