25. Solutions for safety lithium battery
Background: In recent years, fire accidents of electric vehicles are increasing. According to incomplete statistics, in 2020, there was more than 100 fire accidents of electric vehicles in China, and most of fire accidents were caused by thermal runaway of lithium batteries. Therefore, fire safety of lithium battery has been paid more and more attention.
Targets: This topic aims to explore solutions from the perspective of chemical and new materials to further improve the safety of lithium batteries.
26. Recovery and recycling of plastics and solvents from lithium batteries
Background: Following the fast growth of electric vehicles in the world, battery recycling has become more and more important.
Targets: In addition to the recycling of metal materials such as nickel and cobalt with high economic value, from environmental protection perspective, the recycling of plastics used in batteries can further improve the utilization value. At the same time, the consumption of electrolyte solvent in lithium battery is huge and it’s harmful to the environment, so it is necessary to deal with these solvents in a proper mode and recycle them for reuse to promote circular economy of electric vehicle industry.
27. Lightweight design of electric vehicles and battery modules
Background: Lightweight of battery modules is one of the key factors to improve the energy density. At present, the main components of batteries are still mainly made of metal materials, and the application of “plastic instead of steel” in the battery system has a low proportion.
Targets: So how to do better in the lightweight design of batteries is our next task.
28. Breakthrough and commercialization of solid-state battery technology
Background: Compared with the traditional lithium-ion batteries, solid-state batteries is recognized as the next generation because of its more safe and effective.
Targets: So far, energy density and charge ratio of polymer type solid state battery is low, production environment of sulfide type solid-state batteries is demanding, and the electrolyte flexibility of oxide type solid battery is poor, therefore development and commercialization of high performance solid-state batteries is to be expected.