Better batteries than Lithium-Ion?
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Better batteries than Lithium-Ion?
Rechargeable lithium-ion batteries are the mobile of choice today, used in everything from laptop computers, smart phones and even electric cars. For years, though, they’ve been known to overheat and, at times, catch fire.
This was made painfully clear in January, when the lithium-ion batteries in Boeing’s newest commercial aircraft, the Dreamliner, caught fire, leading to a brief grounding of the planes until the fire hazard was resolved.
This is much less likely to happen with batteries made with magnesium. And magnesium ions in the batteries’ electrolytes, which transmit electricity, carry a double positive charge, increasing the device’s energy, or the amount of electricity the battery can store.
Still, no one’s been able to make a commercially viable magnesium-ion battery, mostly because of fears of magnesium’s high reactivity with other materials in a battery, which would interfere with the movement of the ions through the electrolyte.
Liwen Wan and David Prendergast of the Lawrence Berkeley National Laboratory in California, conducted computer simulations that show this reactivity actually isn’t a problem. In the October issue of the Journal of the American Chemical Society, they write that the interference is much lower than had been feared, and therefore that a magnesium-ion battery would be more efficient than expected.
This was made painfully clear in January, when the lithium-ion batteries in Boeing’s newest commercial aircraft, the Dreamliner, caught fire, leading to a brief grounding of the planes until the fire hazard was resolved.
This is much less likely to happen with batteries made with magnesium. And magnesium ions in the batteries’ electrolytes, which transmit electricity, carry a double positive charge, increasing the device’s energy, or the amount of electricity the battery can store.
Still, no one’s been able to make a commercially viable magnesium-ion battery, mostly because of fears of magnesium’s high reactivity with other materials in a battery, which would interfere with the movement of the ions through the electrolyte.
Liwen Wan and David Prendergast of the Lawrence Berkeley National Laboratory in California, conducted computer simulations that show this reactivity actually isn’t a problem. In the October issue of the Journal of the American Chemical Society, they write that the interference is much lower than had been feared, and therefore that a magnesium-ion battery would be more efficient than expected.
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Last edited by senor honda; 11-13-2014 at 04:04 PM.
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On that basis, researchers at the National Cheng Kung University (NCKU) in Taiwan improved the stability of the magnesium-ion battery. Fei-Yi Hung, one of the three leaders of the team, told the online publication EnergyTrends that they accomplished this in part by turning to a new technology that uses electrodes made of magnesium membranes and magnesium powder.
The idea of a magnesium-ion battery has long been attractive not only because it’s less likely to overheat, Hung said, but also has up to 12 times the energy densityof a lithium-ion battery and its charge-discharge efficiency is five times greater.
To illustrate magnesium’s superiority over lithium, Hung said, an electric bicycle with a fully depleted lithium-ion battery needs about three hours to recharge fully. If equipped with a magnesium battery, he said, the process would take only 36 minutes. Also, he said, lithium batteries ordinarily can’t operate properly in temperatures below 5 degrees Fahrenheit. But if these lithium batteries were coated with a film of magnesium, they work fine at temperatures as low as 22 degrees below zero Fahrenheit and as high as 131 degrees Fahrenheit
Only two problems remain, Hung said. First, negative electrodes high-storage rechargeable batteries normally are made from graphite, which is inefficient at storingelectrical energy.Second, graphite is derived from processed petroleum coke, a fossil fuel that emits greenhouse gases.
Hung said his team hopes to replace the graphite with a more efficient material that “would be more environmentally friendly.”
The idea of a magnesium-ion battery has long been attractive not only because it’s less likely to overheat, Hung said, but also has up to 12 times the energy densityof a lithium-ion battery and its charge-discharge efficiency is five times greater.
To illustrate magnesium’s superiority over lithium, Hung said, an electric bicycle with a fully depleted lithium-ion battery needs about three hours to recharge fully. If equipped with a magnesium battery, he said, the process would take only 36 minutes. Also, he said, lithium batteries ordinarily can’t operate properly in temperatures below 5 degrees Fahrenheit. But if these lithium batteries were coated with a film of magnesium, they work fine at temperatures as low as 22 degrees below zero Fahrenheit and as high as 131 degrees Fahrenheit
Only two problems remain, Hung said. First, negative electrodes high-storage rechargeable batteries normally are made from graphite, which is inefficient at storingelectrical energy.Second, graphite is derived from processed petroleum coke, a fossil fuel that emits greenhouse gases.
Hung said his team hopes to replace the graphite with a more efficient material that “would be more environmentally friendly.”
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50's Diner US19.... A Florida Attraction.
1730 US-19, Holiday Fl 34691 click: https://www.tamparacing.com/forums/t...-racing.html CHRA sanctioned cruise-in.
Cruise-In; Free; Every Saturday 5-8PM plus 10% off the whole menu to cruisers
All Cars Every 2nd Saturday Free Breakfast: Since 2015 and more. click: https://www.tamparacing.com/forums/e...ast-tampa.html
Tampa Racing.com covers the Tampa car scene and supports many fund raisers, worthy causes and events that enrich our community. We hope you enjoy them all.
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Port Richey Rod Run at Coast Buick GMC Coming May 25 2024
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50's Diner US19.... A Florida Attraction.
1730 US-19, Holiday Fl 34691 click: https://www.tamparacing.com/forums/t...-racing.html CHRA sanctioned cruise-in.
Cruise-In; Free; Every Saturday 5-8PM plus 10% off the whole menu to cruisers
All Cars Every 2nd Saturday Free Breakfast: Since 2015 and more. click: https://www.tamparacing.com/forums/e...ast-tampa.html
Tampa Racing.com covers the Tampa car scene and supports many fund raisers, worthy causes and events that enrich our community. We hope you enjoy them all.
What do I do? ---- on-site *Aftermarket* spring/suspension installations --- on-site impact wrenching---street lowering with your own stock springs...........True Bi-xenon HID projector headlight conversions........ Much more at Bob's Garage!
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Last edited by senor honda; 11-13-2014 at 04:16 PM.
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Wait a minute!
He says:
"graphite is derived from processed petroleum coke, a fossil fuel that emits greenhouse gases."????
Really! Fossil fuels occur in nature! Graphite occurs naturally! It's already here! Don't the environmental whackos
have any reasoning at all? We are not going to be burning graphite. It's in a battery!
He says:
"graphite is derived from processed petroleum coke, a fossil fuel that emits greenhouse gases."????
Really! Fossil fuels occur in nature! Graphite occurs naturally! It's already here! Don't the environmental whackos
have any reasoning at all? We are not going to be burning graphite. It's in a battery!
__________________
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Port Richey Rod Run at Coast Buick GMC Coming May 25 2024
https://carstoshow.com/registerevent.aspx?eventid=99114
50's Diner US19.... A Florida Attraction.
1730 US-19, Holiday Fl 34691 click: https://www.tamparacing.com/forums/t...-racing.html CHRA sanctioned cruise-in.
Cruise-In; Free; Every Saturday 5-8PM plus 10% off the whole menu to cruisers
All Cars Every 2nd Saturday Free Breakfast: Since 2015 and more. click: https://www.tamparacing.com/forums/e...ast-tampa.html
Tampa Racing.com covers the Tampa car scene and supports many fund raisers, worthy causes and events that enrich our community. We hope you enjoy them all.
What do I do? ---- on-site *Aftermarket* spring/suspension installations --- on-site impact wrenching---street lowering with your own stock springs...........True Bi-xenon HID projector headlight conversions........ Much more at Bob's Garage!
https://www.tamparacing.com/forums/b...ontact-us.html
https://www.tamparacing.com/forums/b...e-senor-honda/
Keystone Motor Club (Founded 2012)... Free car show Every 3rd Saturday, newsletter is
https://www.tamparacing.com/forums/e...-car-club.html
Keystone Facebook ...click: "Keystone Motor Car Club"
Port Richey Rod Run at Coast Buick GMC Coming May 25 2024
https://carstoshow.com/registerevent.aspx?eventid=99114
50's Diner US19.... A Florida Attraction.
1730 US-19, Holiday Fl 34691 click: https://www.tamparacing.com/forums/t...-racing.html CHRA sanctioned cruise-in.
Cruise-In; Free; Every Saturday 5-8PM plus 10% off the whole menu to cruisers
All Cars Every 2nd Saturday Free Breakfast: Since 2015 and more. click: https://www.tamparacing.com/forums/e...ast-tampa.html
Tampa Racing.com covers the Tampa car scene and supports many fund raisers, worthy causes and events that enrich our community. We hope you enjoy them all.
What do I do? ---- on-site *Aftermarket* spring/suspension installations --- on-site impact wrenching---street lowering with your own stock springs...........True Bi-xenon HID projector headlight conversions........ Much more at Bob's Garage!
https://www.tamparacing.com/forums/b...ontact-us.html
https://www.tamparacing.com/forums/b...e-senor-honda/
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