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Rechargeable Zinc-Air battery moves closer to commercialization



 
 
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  #1  
Old September 27th 18, 03:06 PM posted to rec.aviation.soaring
son_of_flubber
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Posts: 1,550
Default Rechargeable Zinc-Air battery moves closer to commercialization

https://www.nytimes.com/2018/09/26/b...lar-power.html



  #2  
Old September 27th 18, 04:12 PM posted to rec.aviation.soaring
[email protected]
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Posts: 465
Default Rechargeable Zinc-Air battery moves closer to commercialization

On Thursday, September 27, 2018 at 10:06:46 AM UTC-4, son_of_flubber wrote:
https://www.nytimes.com/2018/09/26/b...lar-power.html


If it is as "simple" as claimed, why is the circuit board (seen in the photos in the article) so complicated? Also, this has been in development for some years, so clearly there are some significant obstacles (see he https://en.wikipedia.org/wiki/Zinc%E...hargeable %29 ). If they've solved them, cool!
  #3  
Old September 27th 18, 05:40 PM posted to rec.aviation.soaring
Martin Gregorie[_6_]
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Default Rechargeable Zinc-Air battery moves closer to commercialization

On Thu, 27 Sep 2018 08:12:09 -0700, moshe.braner wrote:

On Thursday, September 27, 2018 at 10:06:46 AM UTC-4, son_of_flubber
wrote:
https://www.nytimes.com/2018/09/26/b...ironment/zinc-

battery-solar-power.html

If it is as "simple" as claimed, why is the circuit board (seen in the
photos in the article) so complicated? Also, this has been in
development for some years, so clearly there are some significant
obstacles (see he
https://en.wikipedia.org/wiki/

Zinc%E2%80%93air_battery#Secondary_%28rechargeable %29
). If they've solved them, cool!


I notice the article doesn't mention the energy density, capacity or
charge/discharge rates of that battery. Without this info we can't know
whether this technology is only useful for powering lightbulbs, radio
repeaters etc. or if it has enough grunt to run a car or an FES system.

In this the NY Times is, little better than New Scientist, which
periodically talks up some doctoral student's new, lab-scale battery
technology that, thesis written, is never heard of again.


--
Martin | martin at
Gregorie | gregorie dot org
  #4  
Old September 27th 18, 11:00 PM posted to rec.aviation.soaring
[email protected]
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Posts: 774
Default Rechargeable Zinc-Air battery moves closer to commercialization

"....which periodically talks up some doctoral student's new, lab-scale battery
technology that, thesis written, is never heard of again."

That also describes "Gliding International" when it comes to battery technology, electric airplanes and the like.
  #5  
Old September 28th 18, 07:09 AM posted to rec.aviation.soaring
RW[_2_]
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Posts: 70
Default Rechargeable Zinc-Air battery moves closer to commercialization

On Thursday, September 27, 2018 at 6:00:40 PM UTC-4, wrote:
"....which periodically talks up some doctoral student's new, lab-scale battery
technology that, thesis written, is never heard of again."

That also describes "Gliding International" when it comes to battery technology, electric airplanes and the like.


Ultra capacitors !
  #6  
Old September 28th 18, 03:48 PM posted to rec.aviation.soaring
Soartech
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Posts: 268
Default Rechargeable Zinc-Air battery moves closer to commercialization


Ultra capacitors !

A gallon of gasoline contains 120 million Joules of energy.

Now use this website to calculate what size ultra capacitor you would
need to achieve this amount.

http://hyperphysics.phy-astr.gsu.edu...ic/capeng.html


  #7  
Old September 28th 18, 04:49 PM posted to rec.aviation.soaring
Dave Nadler
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Posts: 1,610
Default Rechargeable Zinc-Air battery moves closer to commercialization

Try a dose of reality:
https://www.youtube.com/watch?v=JELN...ature=youtu.be
  #8  
Old September 28th 18, 04:58 PM posted to rec.aviation.soaring
Martin Gregorie[_6_]
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Posts: 699
Default Rechargeable Zinc-Air battery moves closer to commercialization

On Fri, 28 Sep 2018 07:48:13 -0700, Soartech wrote:

Ultra capacitors !

A gallon of gasoline contains 120 million Joules of energy.

A more useful equivalent for comparison is that a litre of petrol is as
near as dammit 10 kWh in energy terms - and petrol spiked with methanol
will be a bit less: 9-9.5 kWh at a guess,

So a US gallon (3.78l) would be the equivalent of 37.8 kWh of
unadulterated petrol or 34-36 kWh if its a gasoline/methanol blend.

By comparison, the Gen 2 FES battery has 14 cells, each of 2.1 kWh, or
29.4 kWh for the standard 14 cell pack, so an hPh Shark (dual packs
carried has just less than 60kWh of energy onboard, or 1.6 US gallons of
avgas equivalent.

The dual packs are about 18 litres total volume, so on a volumetric basis
they're about 1/3 as good as petrol when it comes to storing energy in
limited space.


--
Martin | martin at
Gregorie | gregorie dot org
  #9  
Old September 28th 18, 05:09 PM posted to rec.aviation.soaring
Dan Marotta
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Posts: 4,601
Default Rechargeable Zinc-Air battery moves closer to commercialization

Dammit, I hate it when someone uses math to prove a point... :-D

On 9/28/2018 9:58 AM, Martin Gregorie wrote:
On Fri, 28 Sep 2018 07:48:13 -0700, Soartech wrote:

Ultra capacitors !

A gallon of gasoline contains 120 million Joules of energy.

A more useful equivalent for comparison is that a litre of petrol is as
near as dammit 10 kWh in energy terms - and petrol spiked with methanol
will be a bit less: 9-9.5 kWh at a guess,

So a US gallon (3.78l) would be the equivalent of 37.8 kWh of
unadulterated petrol or 34-36 kWh if its a gasoline/methanol blend.

By comparison, the Gen 2 FES battery has 14 cells, each of 2.1 kWh, or
29.4 kWh for the standard 14 cell pack, so an hPh Shark (dual packs
carried has just less than 60kWh of energy onboard, or 1.6 US gallons of
avgas equivalent.

The dual packs are about 18 litres total volume, so on a volumetric basis
they're about 1/3 as good as petrol when it comes to storing energy in
limited space.



--
Dan, 5J
  #10  
Old September 30th 18, 12:38 AM posted to rec.aviation.soaring
[email protected]
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Posts: 51
Default Rechargeable Zinc-Air battery moves closer to commercialization

On Friday, September 28, 2018 at 9:58:43 AM UTC-6, Martin Gregorie wrote:
On Fri, 28 Sep 2018 07:48:13 -0700, Soartech wrote:

Ultra capacitors !

A gallon of gasoline contains 120 million Joules of energy.

A more useful equivalent for comparison is that a litre of petrol is as
near as dammit 10 kWh in energy terms - and petrol spiked with methanol
will be a bit less: 9-9.5 kWh at a guess,

So a US gallon (3.78l) would be the equivalent of 37.8 kWh of
unadulterated petrol or 34-36 kWh if its a gasoline/methanol blend.

By comparison, the Gen 2 FES battery has 14 cells, each of 2.1 kWh, or
29.4 kWh for the standard 14 cell pack, so an hPh Shark (dual packs
carried has just less than 60kWh of energy onboard, or 1.6 US gallons of
avgas equivalent.

The dual packs are about 18 litres total volume, so on a volumetric basis
they're about 1/3 as good as petrol when it comes to storing energy in
limited space.


--
Martin | martin at
Gregorie | gregorie dot org



But, an electric motor is more than three times as efficient as an internal combustion engine - 98% vs. 33% - so they don't need as much 'fuel'.
 




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