New generation of lithium-ion batteries
A young research group investigated aqueous electrolytes based on lithium-ion batteries for intermediate storage of electrical energy. The young researchers are developing new coatings and electrolytes for the stabilization of the active components.
|Project status||Development of active materials|
|Project duration||March 2012 until February 2018|
The aim of this project of research is to develop stable and cheap aqueous lithium-ion batteries. This aim can be reached only through studying, understanding and optimizing all the parameters of the battery: electrolyte; positive and negative electrodes and current collectors; separator; configuration. The use of aqueous based electrolyte will not only impact the price of such device, but also improve the power density, due to the increase in the ion concentration and conductivity of the electrolyte. Development of gel-polymer water-based electrolyte is necessary for the increase of the stability of the electrolyte. High voltage lithium intercalation/insertion compounds stable in water have to be developed, in conjunction with negative materials with high specific charge. Ti-based compounds and complexes, and conductive polymers will be investigated as potential negative electrode for such batteries. Non-reactive current collectors and bipolar plates will be develop, for an optimal transport of electrons trough the system.
- Synthesis and characterization of water-based gel electrolytes, with high conductivity and higher stability window (about 2 V).
- Developement of active materials for negartive electrodes with high specific charge for use in aqueous environment. Test of different coating to improve performances.
- Development of active materials for positive electrodes with high working voltage and high stability. Test of different coatings to improve performances.
- Understanding the degradation mechanism of the active materials by analyzing ideal thin sputtered films.
- Leistungsmanagement und Bipolarplatten für wässrige Lithiumionenbatterien
- Building a 10V battery based on the developed materials and electrolytes, composed by 5 cells.