Scalable Sustainable Anodes for Li-ion Batteries by Structural Design
| Reference number | |
| Coordinator | Uppsala universitet - Uppsala universitet Inst f kemi Ångström |
| Funding from Vinnova | SEK 3 772 900 |
| Project duration | August 2022 - July 2025 |
| Status | Ongoing |
| Venture | M-ERA.NET 3 |
Purpose and goal
SUSTBATT aims to produce scalable and sustainable high-capacity Si-based anodes through the cultivation of diatoms, a type of photosynthetic algae that synthesize hierarchical nanostructured SiO2 skeletons through biomineralization. With a landmark of 840 mAhg-1 after 100 cycles (at 100 mAg-1) using diatom-SiO2, this project aims to exploit the full potential of diatom feedstock by adjusting Si/SiO2 ratio in SiOx structures. The main goal of SUSTBATT is to reach stable storage capacities of 1500 mAhg-1 after 1000 cycles (at 100 mAg-1) in upscaled full-cells.
Expected effects and result
The project will contribute to the expected impacts on: (i) ensuring future European sustainable energy supplies through technological development based on novel multifunctional materials, (ii) support the European strategic policy targets in terms of gas emission reduction and develop affordable sustainable energy sources and usage, (iii) strengthened innovative excellence of European academia and Research Institutes, and (iv) technological breakthroughs in energy storage, conversion and harvesting.
Planned approach and implementation
Starting with cultivation of diatom species, synthesis of diatom-SiOx structures and production of diatom-SiOx negative electrodes (WP2). Proceeding to upscaling of SiOx-based half-cells and full-cell prototypes and corresponding electrochemical testing (WP3). Parallel to these, advanced characterization (WP4), feasibility of implementing scalable procedures for enhancing the energy efficiency of lab-scale full-cells through prelithiation (WP5) will be done. Finalizing with a roadmap towards integration of feedstock for commercial Si-based anode production (WP6).