THE NA-ION CELL CONCEPT
The NAIMA project is conceived to develop and test 2 configurations of enhanced Na-ion cells to satisfy the main ESS applications demanded by the end-users of stationary energy sector. This novel concept becomes a reality configured in the following 2 cell designs:
1) High power and fast charge design concept (120Wh/kg; 250Wh/l; 5000W/kg; 8,000 cycles; >50% recycling rate; 0.05€/kWh/cycle and ++Safety)
Created by the combination of polyanions, optimized electrolyte and bio-based hard carbons to satisfy the end-user’s needs of renewable generation farms (Farm Operators, DSOs and TSOs are the main players) and industry plants (All TIERs of manufacturing and process industry value chains which production processes require high electricity demands (intensive, peaks, etc.)
2) Low cost and energy design concept (200Wh/kg; 420Wh/l; 500W/kg; 6,000 cycles; >50% recycling rate; 0.04€/kWh/cycle and ++Safety)
Conceived by the integration of lamellar oxides, optimized electrolyte and bio-based hard carbons to satisfy end-user’s needs of private households (building owners committed to dedicate investment in renewable energy installations to satisfy their energy consumption are end-users).
1- Positive electrode – Cathode
Materials: Novel lamellar oxides and NVPF Polyanion.
Research & Innovation needs: Scale-up of optimized lamellar oxides and development of Gen1-pos Na3V2(PO4)2F3 & Gen2-pos Na3+xV2-xMx(PO4)3.
Current/Final TRL:4/6.
2- Electrolyte
Materials: Optimized salt formulations with additives and cyclic carbonate solvents.
Research & Innovation needs: Better electrochemical performance: 1M NaPF6 in EC-PC and 1M NaPF6 in EC-PC-DMC formulations (+additives) will be studied.
Current/Final TRL:4/6.
3- Negative electrode – Anode
Materials: Biomass-based and bio-polymer HCs.
Research & Innovation needs: Optimization of formulation, pilot-scale synthesis, cost-efficient materials (C>300mAh/g; ICE>80%; V>0,2V; >80% capacity retention at 10C).
Current/Final TRL:4/6.