Flow Battery Day 2027

Built on flow battery research at Fraunhofer ICT

The organiser is the Fraunhofer Institute for Chemical Technology ICT, based in Pfinztal. The conference chair is Dr. Jens Noack. The conference is organised by the doctoral researchers of the Flow Battery group.

Advanced Characterization and Testing for Flow Batteries

The focus is on the characterisation, testing, diagnosis and evaluation of flow batteries. The conference marks the start of an annual conference series for the redox flow community at Fraunhofer ICT. It connects electrochemical methods, operando diagnostics, accelerated ageing tests and degradation analyses with the question of robust benchmarks and reproducible results.

Contributions range from the fundamental characterisation of redox-active materials and electrolytes to the validation of cells, stacks and systems. The aim is to make measurement practices comparable and to strengthen exchange on shared challenges.

Nine topic areas from A to I

• AElectrochemical characterisationCV, EIS, CA, CP, kinetics, diffusion, reference electrodes, SOC-dependent measurements, calibration, measurement artefacts and uncertainty.
• BOperando and in situ diagnosticsSpectroscopy, imaging, tomography, spatially resolved measurements, sensors and online monitoring.
• CDegradation, lifetime and failure analysisElectrolyte decomposition, electrode ageing, membrane degradation, crossover, precipitation and capacity loss.
• DAccelerated testing and lifetime predictionAccelerated ageing, stress tests, cycling protocols, temperature, SOC and current effects, application-relevant load profiles, lifetime modelling and comparison with real ageing.
• EBenchmarking, reproducibility and standardisationTest protocols, round robin tests, uncertainty, KPIs, minimum reporting requirements, metadata, reference conditions and data comparability between laboratories.
• FElectrolytes and redox-active materialsOrganic and inorganic electrolytes, vanadium, iron, bromine and hybrid systems, stability, kinetics and transport.
• GElectrodes, membranes and cell componentsSurface characterisation, porosity, wettability, crossover, component ageing and structure-performance relationships.
• HCell, stack and system testingSingle cells, stacks, flow effects, pressure drop, shunt currents, thermal behaviour and pilot or system validation.
• IModelling and data-driven diagnosticsEquivalent circuit and physics-based models, parameter identification, digital twins, analysis of diagnostic data and state estimation.

Key dates before the conference

15 January 2027

Abstracts due, submit to sritama.chakraborty@ict.fraunhofer.de

29 January 2027

Notification of abstract acceptance

26 February 2027

Presentation slides and posters due

The programme will be published in February 2027.

Abstracts, presentation formats and materials

Contributions are welcome as a 20-minute talk including discussion or as a poster. Please submit an abstract of no more than 300 words, optionally with figures and tables.

• Give the exact title, the names of the authors and the institution, city and country.
• State the topic letter from A to I and indicate whether you prefer a talk, a poster or both.
• Use the submission template.
• Submit presentation slides and posters as PDF. They will be made available for download together with an optional extended abstract.
• The conference language is English.

Abstracts should be sent by 15 January 2027 to sritama.chakraborty@ict.fraunhofer.de.

Attendance and fees

Registration is handled on the official event page. The participation fee is 100 Euro. For students and academic institutions it is 60 Euro. Lunch and coffee breaks are included in the fee. Further details are available from the conference management.

Conference chair, abstracts and conference management