NASA may have just cracked the code for replacing lithium in batteries: ‘Double or even triple the energy’
Tokollo Matsabu
Fri, July 14, 2023
NASA believes it has cracked the code in the quest to make electric planes a more viable technology.
Researchers at NASA’s Solid-state Architecture Batteries for Enhanced Rechargeability and Safety (SABERS) have created a high-performing battery that they believe can both hold enough electricity and discharge it fast enough to efficiently power an electric aircraft.
Battle of the batteries
Battery performance has long been a roadblock in the development of more sustainable electric airplanes.
While lithium-ion batteries currently dominate the battery technology space, NASA has used a different type of battery called a “solid-state battery” that is lighter and can store more power than lithium-ion batteries.
The solid-state battery isn’t new, but the technology has not been suitable for use in large electronics until SABER’s recent discovery.
Another key advantage that lithium-ion batteries have long held over solid-state batteries is that they can discharge power much faster than solid-state batteries.
SABER says it has addressed this issue with a new innovation that is able to increase a solid-state battery’s discharge rate by a factor of 10 — and then by another factor of five.
“We’re starting to approach this new frontier of battery research that could do so much more than lithium-ion batteries can,” said Rocco Viggiano, principal investigator for SABERS at NASA’s Glenn Research Center in Cleveland, in a press release.
“Not only does this design eliminate 30 to 40 percent of the battery’s weight, it also allows us to double or even triple the energy it can store, far exceeding the capabilities of lithium-ion batteries that are considered to be state of the art,” he added.
Is sustainable aviation around the corner?
Safety is a primary concern for aircrafts. You wouldn’t get on an electric plane if there was a possibility it could catch fire mid-air.
Because lithium-ion batteries contain highly flammable liquid that is prone to leakage, each battery cell is kept in its own steel case, which adds weight. And, when damaged, lithium-ion batteries can still catch fire.
Solid-state batteries, on the other hand, can still be used even when they’re damaged. They also don’t contain liquids, so they can be stacked vertically in one casing, which maximizes space and lightens the load of the battery.
Aircrafts operate in varying temperatures and pressures, going from low to high altitudes in short periods of time, and NASA researchers have found that solid-state batteries can operate in temperatures twice as hot as lithium-ion batteries. Solid-state batteries achieve this using less cooling technology than lithium-ion.
This battery technology has caught the eye of the U.S. government and the aviation industry as a promising way to help reduce the air pollution stemming from air travel. It isn’t commercially viable just yet, but NASA researchers are partnering with various academic institutions to continue developing this battery technology.
Tokollo Matsabu
Fri, July 14, 2023
NASA believes it has cracked the code in the quest to make electric planes a more viable technology.
Researchers at NASA’s Solid-state Architecture Batteries for Enhanced Rechargeability and Safety (SABERS) have created a high-performing battery that they believe can both hold enough electricity and discharge it fast enough to efficiently power an electric aircraft.
Battle of the batteries
Battery performance has long been a roadblock in the development of more sustainable electric airplanes.
While lithium-ion batteries currently dominate the battery technology space, NASA has used a different type of battery called a “solid-state battery” that is lighter and can store more power than lithium-ion batteries.
The solid-state battery isn’t new, but the technology has not been suitable for use in large electronics until SABER’s recent discovery.
Another key advantage that lithium-ion batteries have long held over solid-state batteries is that they can discharge power much faster than solid-state batteries.
SABER says it has addressed this issue with a new innovation that is able to increase a solid-state battery’s discharge rate by a factor of 10 — and then by another factor of five.
“We’re starting to approach this new frontier of battery research that could do so much more than lithium-ion batteries can,” said Rocco Viggiano, principal investigator for SABERS at NASA’s Glenn Research Center in Cleveland, in a press release.
“Not only does this design eliminate 30 to 40 percent of the battery’s weight, it also allows us to double or even triple the energy it can store, far exceeding the capabilities of lithium-ion batteries that are considered to be state of the art,” he added.
Is sustainable aviation around the corner?
Safety is a primary concern for aircrafts. You wouldn’t get on an electric plane if there was a possibility it could catch fire mid-air.
Because lithium-ion batteries contain highly flammable liquid that is prone to leakage, each battery cell is kept in its own steel case, which adds weight. And, when damaged, lithium-ion batteries can still catch fire.
Solid-state batteries, on the other hand, can still be used even when they’re damaged. They also don’t contain liquids, so they can be stacked vertically in one casing, which maximizes space and lightens the load of the battery.
Aircrafts operate in varying temperatures and pressures, going from low to high altitudes in short periods of time, and NASA researchers have found that solid-state batteries can operate in temperatures twice as hot as lithium-ion batteries. Solid-state batteries achieve this using less cooling technology than lithium-ion.
This battery technology has caught the eye of the U.S. government and the aviation industry as a promising way to help reduce the air pollution stemming from air travel. It isn’t commercially viable just yet, but NASA researchers are partnering with various academic institutions to continue developing this battery technology.
Kecia Bal
Thu, July 13, 2023
Providing energy year-round has so far presented one of green power’s most insurmountable challenges — but now the world’s first fully functional sand battery, which can store green power for months, could present a valuable solution.
According to BBC News, engineers working for Finnish company Polar Night Energy have put sand to work. They installed the first sand battery in July 2022 and have seen promising results so far. The sand is stored in a simple silo, a humble innovation that may help provide a path forward for cleaner, cheaper energy as a viable, sustainable part of everyday life.
While green energy sources are often readily available at certain times of the year, a long-running concern has been finding avenues to store that energy for colder months, when more families and businesses need to turn up the heat.
How would sand batteries work?
First, existing solar panels and wind turbines would generate electricity using natural and available sources.
Some of that electricity would be put to use directly and immediately through an electrical grid to meet current demands, but the remaining, unused energy could be stored as heat in a sand battery, which can be warmed up to 500 degrees Celsius (around 932 degrees Fahrenheit) using the same heat-exchange process that fuels electric fires.
Sand is considered very effective at retaining heat, and under the right circumstances, it could hold that 500 degrees Celsius worth of warmth for months at a time.
Finally, the heat that had been stored could be used to provide hot water heating in order to warm up buildings year-round.
Tucked away in a corner of a small power plant in western Finland, the geographic location of this sand battery pilot may prove to be an ideal scenario for testing the results. With rising prices of dirty energy sources like fossil fuel and cold winter months just ahead, interest in renewable energy sources is rising.
Intermittency — energy sources that ebb and flow, such as solar energy’s dependence on sunlight — has remained a concern and has prompted energy providers to continue to rely on energy from dirty and expensive fossil fuels to balance out availability.
Residents of the small town of Kankaanpää, where the pilot is taking place, will have a chance this winter to test out the results of the sand battery, engineered by the founders of Polar Night Energy. The new company installed the device in the Vatajankoski power plant, which operates the town’s heating system.
“It’s really simple, but we liked the idea of trying something new, to be the first in the world to do something like this,” said Pekka Passi, the plant’s managing director.
The next question will be whether it can be scaled for broader use and even more impactful applications, such as providing electricity as well as a heat source for hot water.
Getting energy from renewable sources is ideal in many ways, as clean energy is often cheaper and has less of a negative impact on our overheating planet, but those sources may only provide truly sustainable solutions if the energy becomes reliable and available when people need it.
Sand batteries may provide one answer to help combat climate change and provide a stable, clean source of year-round heat.
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