A research team from Huazhong University of Science and Technology, China, confess to have managed to find the so-called advanced electrolyte materials for maintaining LiFNFSI temperature lithium-ion battery stably. The team has conducted several tests on materials such as LiPF6 conventional electrolyte replacement. Hongbo Han, a member of the research team, the key of the invention is the heat stability of the battery by using LiFNFSI.
Electrolyte has LiFNFSI 1.0M carbonate in a mixture of ethyl (ethyl carbonate) and carbon methyl ethyl (ethyl mthyl carbonate) with high conductivity compared with LiClO4, have good electrochemical stability and does not cause corrosion of aluminum.
At room temperature exposed, 25 degrees Celsius and then to 60 degrees celciud is increased, grafit/LiCoO2 cells by displaying/exposing cycles of work of LiFNFSI is better than LiPF6. Especially it's at a temperature of 60 degrees Celsius. Decrease in electrolyte cell uses the basic ingredients LiFNFSI without additives, it's only 37 percent after working with 100 cycles. Whereas cells of LiPF6 used by lithium-ion batteries, it's fast decrease of ability at that temperature.
Base on material electrolyte test of LiFNFSI, ability is shown to improve battery performance working at high temperatures. In automotive applications, the ability to prevent hot material is very beneficial. Car manufacturers no longer need to use liquid cooling techniques to prevent the high battery temperature, especially in hybrid car and electric car plug-ins.
