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Rechargeable Zinc-Air battery moves closer to commercialization
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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! |
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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 |
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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. |
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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 ! |
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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 |
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Rechargeable Zinc-Air battery moves closer to commercialization
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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 |
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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 |
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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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