Introduction: On March 11, 2019, the University of Texas website announced that its Dallas research team found that by adding a designed oxide coating on the positive surface of the lithium ion battery, lithium ion can be effectively solved. Battery thermal runaway. The high-energy density lithium-ion battery is expensive, mainly because the battery material will degrade when the battery is continuously charged, and the energy released by it will increase the temperature of the battery and cause the battery to catch fire, causing safety problems. During the continuous charging and recharging of the battery, oxygen will be released from the surface of the battery material. During this process, the transportation channel of lithium ions from the inside to the outside may be blocked by the metal nickel dust generated with the release of oxygen. When the transportation channel is blocked, lithium ions that want to enter and leave the battery will not be transferred, resulting in a rapid decline in battery capacity. As the heat increases, the possibility of the battery catching fire and exploding also increases. The research team of the University of Texas at Dallas found that adding a layer of designed oxide coating on the positive surface of the battery can not only solve the problem of overheating of the battery, but also increase the battery capacity by 20% to 30%. The modified battery can Withstand longer charging times. Based on the new findings of the above thermal runaway problem, the research team has begun to develop new battery cathode materials for electric vehicles to solve the problem of lithium ion transport channel blockage. At the same time, it cooperates with the US Naval Research Laboratory to further study and improve battery cathode materials Issues of lithium-rich capacity and battery safety.
In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkylor aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).
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