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The Forum > Article Comments > Battery power > Comments

Battery power : Comments

By Mike Pope, published 25/9/2015

Efficient, rapidly re-chargeable batteries offer huge advantages to owners and users of solar energy.

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Agnostic, Hmmm your suggestion implies an extremely low internal
series resistance. I know nothing about graphical batteries except
the usual carbon non-rechargable battery.
I know if you feed power into them they do get hot.
Probably what you are talking about is quite different.
However does a low series internal resistance imply a high internal
discharge rate ?
Posted by Bazz, Friday, 2 October 2015 5:30:41 PM
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Hi Jazz

It seems that graphene mixed with vanadium oxide can be used to make super cathodes. These enable a battery to recharge in less than 60 seconds and retain 90% of its capacity after 1,000 recharges. Moreover, these super-cathodes enable scaling up for industrial use which I am told is happening in the USA, Japan and Germany.

This sounds experimental to me but it does indicate that the problems of rapid recharge and durability are probably closer to being overcome than I thought.

Very nice for Australia since we have the worlds largest deposits of lithium and graphene copyrights!
Posted by Agnostic of Mittagong, Friday, 2 October 2015 6:42:25 PM
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It still doesn't solve the problem of having to have power cables as
thick as your arm to do the fast charge.

It could be possible in a factory or very large building carpark but
it would be impossible for domestic premises.
Actually to make the connection to the car would be very difficult for those currents.
Would a small woman be able to lift the plug and cable ?

There are stacks of problems for charge rates under an hour or so.
What if 20 cars in one street were plugged in at the same time.
Would they melt the street wires ?
Posted by Bazz, Friday, 2 October 2015 11:01:56 PM
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