Graphene-enhanced cobalt free cathode for the for next-generation high voltage 5V lithium-ion batteries
| Reference number | |
| Coordinator | RISE Research Institutes of Sweden AB - Bioeconomy and Health / Materials and Surface Design |
| Funding from Vinnova | SEK 300 000 |
| Project duration | May 2020 - December 2020 |
| Status | Completed |
| Venture | Strategic innovation program SIO Grafen |
| Call | SIO Grafen - Collaboration on commercial graphene applications, spring 2020 |
Important results from the project
Graphmatech developed industrially relevant and scalable method for coating of LNMO with different graphene materials including graphene oxide and reduced graphene oxide. At KTH these new graphene coated LNMOs is formulated into a model pouch cell compose of newly developed advanced cathode, EMC/EC 1M LiPF6 electrolyte and Graphite anode. The preliminary study indicated that graphene modified high voltage cathode material have significant advantages over the uncoated high voltage cathode materials in terms of cycling stability.
Expected long term effects
The project has identified potential graphene-based fillers (Graphene, graphene oxide and reduced graphene oxide) and high voltage cathode, LNMO that have a strong potential to improve the electrochemical properties of the high voltage lithium ion batteries. The identified graphene coating method could be used to develop graphene coated and bridged LNMO powders. The preliminary results indicated a significant increase in electrochemical performance of graphene coated high voltage cathode LNMOs in comparison to the uncoated one.
Approach and implementation
It was structured with 3 work packages (WPs). The work package 1 is dedicated to coordination and consortium construction within the project. The other 2 work packages were responsible for material selection, materials development, and performance analysis. Periodic biweekly update meetings were held with all partners. The consortium assured a close collaboration in between SME, academia and institute and result a positive output that can potentially leading to larger project focused on optimization of materials and processes and characterization tools developed in it.