SODIUM-ION batteries

Over 10 years shaping Europe's sodium battery landscape

CIC energiGUNE has been pioneering sodium battery research for over a decade, leading the development of this technology in Europe.

Find out how we can help power the next generation of batteries through sodium-ion innovation

Why sodium-ion

While lithium remains dominant, sodium-ion technology emerges as a sustainable and cost-effective alternative for specific applications.

Comparable performance with enhanced safety

Sustainable and cost-effective, thanks to widely available resources

Low-temperature ready: built for outdoor and off-grid reliability

                This technology opens new possibilities for battery manufacturers, energy integrators, micro-mobility companies and developers of stationary storage solutions.
            

Leading the development of next-generation batteries

At CIC energiGUNE we combine advanced scientific research with an industrial and market vision, driving the transition towards more sustainable energy systems.

Development of innovative materials and cells
In-depth knowledge of sodium-ion chemistry
Pre-industrial validation and prototyping
Technology transfer and technical support to industry

We design solutions for the biggest storage challenges

VALIDATING CELLS AND COMPONENTS

To ensure seamless integration within existing Li-ion industrial lines

OPTIMIZING SODIUM-ION CHEMISTRY

To achieve safe, long-lasting, and competitive batteries

DEVELOPING COST-EFFICIENT MATERIALS AND PROCESSES

To lower production costs and enable local manufacturing

Unique capabilities along the entire value chain

Material synthesis

Development of sodium-adapted compounds such as layered oxides, Prussian white, and porous hard carbons

Mechanistic studies

Advanced in situ / operando analysis using diffraction, spectroscopy, and electron microscopy

Electrolyte design

Custom electrolyte design combining salts, solvents, and additives for optimized performance across conditions

Cell design & assembly

Fabrication of Na-ion cells in lab and pre-industrial formats compatible with Li-ion production lines

Safety & Testing

Assessment of prototype cells for safety, lifetime, and energy efficiency under varied conditions

Modeling & Optimization

Electrochemical modeling to correlate material properties with real-cell behavior and performance

An expert team at the service of innovation

CIC energiGUNE's multidisciplinary team integrates specialists in materials, electrochemistry, modelling and industrial scale-up, working hand in hand with industrial and institutional partners to bring sodium-ion technology to the market.

Jon Ajuria

Research Line Manager

Jon Ajuria

Research Line Manager

Damien Saurel

Mechanism Team Leader

Marine Reynaud

Mechanism Group Leader

Laida Otaegui

Responsible for Electrode manufacturing and prototyping

Laida Otaegui

Responsible for Electrode manufacturing and prototyping

We enhance the value of our science through key activities that drive the development of strategic, sustainable, and scalable solutions

A unique offer to accelerate your development in sodium-ion

Our most valued services

Advisory on sodium battery technology selection — We support industries and research partners in selecting the most suitable sodium-based battery technologies for mobility, renewable, and stationary energy applications.
Life Cycle Analysis (LCA) and Levelized Cost of Storage (LCOS) — Comprehensive assessment of environmental impact and cost efficiency across the entire battery value chain.
End-of-life and performance models (SOH & SOC) — Advanced modeling of battery aging, health, and remaining capacity to optimize reuse and recycling strategies.
Degradation mechanism analysis — Identification and characterization of chemical and electrochemical processes affecting long-term performance.
Commercial and techno-economic evaluation — Comparison of market-ready sodium solutions from both a technical and financial perspective.
Accelerated prototyping and validation — Rapid development and testing of sodium battery cells and modules for functional proof-of-concept and industrial scaling.