/Next generation active materials for Li-ion batteries

Next generation active materials for Li-ion batteries

Leuven | More than two weeks ago

Push the limits of Li-ion batteries by create new cathode materials
The energy density of a Li-ion battery is determined by the capacity of the electrodes and the working potential of the battery cell. Commercial Li-ion batteries utilize metal oxide cathode materials, such as LiCoO2, LiMn2O4 or LiNixMnyCozO2. These oxide-based cathodes have an operating potential up to almost 5V vs. Li+/Li, with the highest potential observed in LiMn1.5Ni0.5O4 around 4.8V vs. Li+/Li.  

 

The working potential of the cell is affected by the position of the bonding and antibonding orbitals of the M-O bond. By exchanging the oxygen atoms by another element or group of elements the working potential can be increased. Polyanionic cathode materials, which contain e.g. -SiO4, -VO4, or -PO4 groups, can boast the working potential above 5V vs. Li+/Li, and are as such ideal candidates for the next generation of active materials for Li-ion cathodes.  

 

For this research topic, you will synthesize and characterize next generation battery cathode materials using a plethora of deposition (PVD, CVD, and solution based deposition techniques) and characterization techniques (ERD, RBS, SEM,...). You will work in the fast-growing Energy Storage and Conversion Team at imec, and will build on years of experience in Li-ion batteries.



Type of project: Thesis, Internship

Duration: 1 year

Required degree: Master of Engineering Science

Required background: Nanoscience & Nanotechnology

Supervising scientist(s): For further information or for application, please contact: Louis De Taeye (Louis.DeTaeye@imec.be)

Only for self-supporting students.