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C-Ion "Battery" Skepticism

Posted: Tue, 17 Sep 2019, 15:08
by Richo
So there has been a few news reports around about ZapGo's C-Ion "Battery".

https://www.businesswire.com/news/home/ ... -Vehicles

https://www.smart-energy.com/industry-s ... es-faster/

https://www.electricvehiclesresearch.co ... c-vehicles

SO the claims are that they intent to charge a car in 5 minutes with 500km range and sell the whole eV at the same price as the petrol equivalent.
Even with a modest 150Wh/km @ 500km that's 75kWh charged in 5 minutes.
OR 900kW charger -> with losses its an even 1MW charger. :shock:

BUT that is not what is causing me concern.
If you google G3.4-1500-14.70.122 you will be able to get the datasheet for this C-ion "Battery".
A battery capacity rated in "F" now "Wh".
Sorry but that IS a Capacitor.
And not any better than any other supercap on the market.
It has 2.4Wh which for 75kWh is 31,250 cells at a weight of 5,625kg (5.6T).
Ah so NO.

Anybody find anything more that can substantiate their claims?

Re: C-Ion "Battery" Skepticism

Posted: Tue, 17 Sep 2019, 15:17
by brendon_m
I tend to glaze over when some company announces a battery product that will be revolutionary. There's so much vaporware out there. Until I can buy one I don't believe any claims.

Re: C-Ion "Battery" Skepticism

Posted: Wed, 18 Sep 2019, 13:07
by Richo
https://cleantechnica.com/2019/02/01/za ... gradation/
So what I read here is the improvement to the breakdown voltage of the capacitor.
Most supercaps are around 2.7V where as the current C-Ion is 3.4V.

If we use 100Wh/kg which is similar to say a LiFePO4 headway battery.
The C-ion 180g "battery" would need to store 18Wh.
18Wh is 64800J so the 1500F rating would need to have to voltage go up to 9.3V
And would have to sell for under AUD$15ea
That is just to be comparable with a regular battery.
and that's not even close to their aim of a 500km eV

They mentioned they air aiming for 2025 for such eV batteries.
Oh and a "30 year life" :shock:

Even with a 10% improvement on capacity (F) over that time they would still need to achieve 8.86V.

Re: C-Ion "Battery" Skepticism

Posted: Wed, 18 Sep 2019, 13:16
by Richo
To be on the game they need to get to 250Wh/kg.
So their 180g "battery" needs 45Wh 162kJ and have a voltage of 14.7V.
:lol: