SOLIDBAT
Competitive and sustainable lithium solid-state battery technology enabling large scale production for automotive application
HORIZON-CL5-2023-D2-02-01| Grant agreement ID:101147533
December 2024 – November 2028
The SOLIDBAT project aims to develop an advanced solid-state battery with high energy density (>400 Wh/kg), fast charging, long cycle life, and enhanced safety while minimizing environmental impact and production costs. It will feature a high-capacity NMC811 cathode, a 3D-structured lithium metal anode, and a single-ion conductive hybrid gel polymer electrolyte. By 2030, targets include 500 charge cycles at 80% DoD, a pack-level cost of €75/kWh, and full compliance with EU sustainability and safety standards. The project emphasizes scalable, automated manufacturing and aims to reach TRL6 with 5 Ah prototype cells. SOLIDBAT supports Europe’s transition to climate-neutral energy and transport through safe, recyclable, and economically viable battery technology.
The SOLIDBAT project aims to develop an advanced solid-state battery (SSB) technology that delivers high energy density (>400 Wh/kg, 1000 Wh/L), fast charging, long cycle life, and enhanced safety, while minimizing environmental impact and production costs. The battery will feature a high-capacity NMC811 cathode, a 3D-structured lithium metal anode, and a single-ion conductive hybrid gel polymer electrolyte (HGPE). Sustainability is a core principle, with efforts to reduce critical raw material use, eliminate toxic solvents like NMP, and ensure recyclability throughout the battery’s lifecycle.
By 2030, SOLIDBAT targets 500 charge cycles at 80% depth of discharge (DoD), a pack-level cost of €75/kWh, and full compliance with EU sustainability and safety standards. The project emphasizes scalable and automated manufacturing processes and aims to reach Technology Readiness Level 6 (TRL6) with 5 Ah prototype cells.
Key objectives include designing SSBs to meet end-user needs, developing digital tools for design and aging prediction, optimizing components such as the lithium anode, HGPE and NMC cathode, and scaling up manufacturing processes. Backed by a skilled consortium representing the full battery value chain, SOLIDBAT supports Europe’s shift to climate-neutral energy and transport systems through replicable, safe, and economically viable battery technology.
SPECIFIC POLYMERS Objectives
As part of the SOLIDBAT initiative, SPECIFIC POLYMERS plays a key role in advancing both high-energy cathode and hybrid gel polymer electrolyte (HGPE) technologies, contributing to the project’s mission of developing high-performance, safe, and sustainable solid-state batteries.
High-Energy Cathode Development
SPECIFIC POLYMERS will design and synthesize a series of single Li-ion conducting, water-processable polymer binders tailored for use in high-loading NMC cathodes. These novel binders will support the transition to greener manufacturing by eliminating the need for hazardous solvents such as NMP. The materials will be extensively characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and rheological measurements to ensure optimal thermal stability and processability.
Hybrid Gel Polymer Electrolyte (HGPE) Development
Leveraging its proprietary molecular toolbox, SPECIFIC POLYMERS will supply a diverse range of monomers, polymers, and crosslinkers for the development of HGPEs with tunable properties. The formulations will incorporate SPECIFIC POLYMERS developed non-flammable plasticizers to enhance safety and reduce flammability. Initial small-scale batches of these advanced electrolyte materials will be produced for validation in SSB prototypes.
Component Scale-Up and Manufacturing
To support industrial scalability, SPECIFIC POLYMERS will scale up the production of selected binder systems to the 1-3 kg range and the HGPE materials up to 1 kg. This will facilitate integration into pilot-scale battery manufacturing, directly contributing to the project’s TRL6 targets.
Through these contributions, SPECIFIC POLYMERS reinforces the SOLIDBAT project’s commitment to delivering high-performance, safe, and eco-conscious solid-state battery technologies for next-generation electric mobility.
Related R&D products from SPECIFIC POLYMERS portfolio
- Single-ion monomers : SP-49-023 (MTFSILi >), SP-59-011 (STFSILi >), SP-59-021 (SDICYLi >), SP-59-031 (SCYLi >)
- Single-ion polymers: SP-4P-6-004 (pMTFSILi >), SP-5P-9-008 (pSSLi >)
- Cyclocarbonate monomers: SP-40-001 (GCMA >), SP-40-010 (GCA >), SP-40-011 (GCC4A >)
- Functional polycarbonates: SP-9P-7-001 (Poly(HMC) bis acrylate >), SP-9P-7-002 (Poly(HMC-co-CL) bis acrylate >), SP-9P-7-003 (Poly(HMC-co-PMC) bis acrylate >)
Our partners in SOLIDBAT project
