When you need a mobile phone most, are you worried that it won't work? What do you do when you drive an electric car and there is no power in it? For these questions, light lithium sulfur battery can answer for you! Its energy storage capacity is more than twice that of batteries on supermarket shelves, but it usually has no electricity and short service life. Scientists at the joint research center for energy storage research and the Pacific Northwest National Laboratory have found one of the reasons behind this problem.

They found that the salt used in the electrolyte in the battery makes a big difference. When a salt called LITFSI lithium trifluoromethylsulfonimide is used as the electrolyte of the battery, lithium battery assembly equipment can test the battery for more than 200 charging and discharging operations. In lithium sulfur battery, lifsi combines lithium and sulfur atoms on the electrode, but it is released quickly. On the contrary, similar electrolytes have stronger binding force to lithium and sulfur atoms, and do not release at all. The performance of the cell decreases rapidly, and the battery has no energy after running for dozens of times.

One of the problems with first mover vehicles is that drivers are trapped between charging stations for a long time. This concern led consumers to decide to buy low emission cars. The results of this study add another important factor to the design of high energy lithium sulfur battery.