Shulou(Shulou.com)11/24 Report--

CTOnews.com, October 11 (Xinhua) researchers at NASA's solid-state structure battery (SABERS) program to enhance rechargeability and safety have made progress in developing an innovative battery pack that is lighter, safer and better than the batteries commonly used in electric vehicles and large electronics today. Their work aims to improve battery technology by studying the use of solid-state batteries in aviation applications, such as electric aircraft and Advanced Air Traffic (Advanced Air Mobility).

Unlike industry-standard lithium-ion batteries, solid-state batteries do not contain liquids, which can lead to harmful conditions such as overheating, fire and long-term loss of charge. Solid-state batteries can store more energy and perform better in extreme environments than standard lithium-ion batteries.

Battery performance is a key aspect of the development of electric aircraft. these batteries must effectively store the huge amount of energy needed to power the aircraft while keeping it lightweight. Moreover, the battery must release energy at an ultra-fast speed to power the electric aircraft.

To achieve this, the SABERS team has experimented with innovative materials that have not yet been used in batteries, which have made significant progress in power discharge. In the past year, they have successfully increased the discharge rate of the battery by 50 times, bringing researchers closer to their goal of powering large vehicles.

This illustration depicts the interior of the SABERS solid-state battery, in addition to the new materials, the NASA team also uses revolutionary battery packaging, which allows it to reduce most of the weight of the battery and increase the energy it can store. Unlike ordinary batteries that connect individually packaged batteries, SABERS batteries stack all the batteries vertically in a single shell. Through this design, SABERS has proved that solid-state batteries have an energy density of 500Wh / kg, more than twice that of modern electric vehicle batteries. For comparison, the current energy density of Tesla's 4680 battery is about 300Wh / kg, while the energy density of the battery pack is 217Wh / kg. The third generation CTP Kirin battery released by Ningde era has an energy density of 255wh / kg.

"this design not only reduces the weight of the battery by 30 to 40 percent, but also enables us to double or even triple the energy it can store, far exceeding what is considered to be the most advanced lithium-ion battery," said Rocco Viggiano, lead researcher at NASA's Glenn Research Center in Cleveland.

In addition, solid-state batteries do not catch fire in the event of failure and can still run in the event of damage, which makes their use in aviation attractive. Researchers at SABERS have tested their batteries at different pressures and temperatures and found that they can operate at almost twice the temperature of lithium-ion batteries without requiring so much cooling technology. The team is continuing to test at higher temperatures and pressures to push the limits of the technology.

CTOnews.com learned that SABERS has worked with several partners, including the Georgia Institute of Technology, Argonne National Laboratory and Pacific Northwest National Laboratory, to further advance this cutting-edge research.

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