ENERGY STORAGE & 2.5D MATERIALS

2D-HEBAT

Silicon-based anode architectures for high-capacity, fast-charging lithium-ion batteries.

2D-HEBAT is a QUANTUMAT technology-development programme addressing battery performance through materials and electrode engineering. We develop 2.5D materials and electrode architectures through experimental research, connecting active-material properties, processing and interfaces with the requirements of practical battery cells.

Current development stage: TRL 4.
Experimental coin cells and two anode architectures form the basis of the programme.

Battery development work inside a glovebox, extracted from the QUANTUMAT project video — Experimental battery development. Still from the QUANTUMAT project video.

TECHNOLOGY & PERFORMANCE

Materials designed around battery requirements

2D-HEBAT investigates silicon-based 2.5D structures, chemical preparation and electrode architecture. Development includes pre-lithiation, active-material loading and the selection of compatible binders and electrolytes.

1,400 mAh/g

Anode specific capacity

Reported capacity per gram of anode active material.

<20 min

Fast charging

Charging performance reported in the project presentation.

500 cycles

Cycling durability

Cycle-life figure reported in the project presentation.

Figures describe research-stage performance. Anode specific capacity is distinct from complete-cell energy density. Charging and cycling results depend on the test conditions and cell configuration. Technical data and measurement conditions can be discussed directly.

Microscopy image of 2.5D material morphology — 2.5D material morphology.

Experimental work that guides development

The programme combines materials preparation, electrode fabrication and cell assembly with electrochemical testing. Coin-cell experiments help compare architectures and guide further optimisation.

The next steps address pre-lithiation, higher active-material loading, and the balance between capacity, charging rate and cycling stability.

DEVELOPMENT ROADMAP

Progression toward practical cells

Current: TRL 4

Two anode architectures and experimental coin cells. Continued evaluation of capacity and charging behaviour.

Next: TRL 4–5

Optimise pre-lithiation and material loading. Develop pouch-cell prototypes and refine binders and electrolytes.

Planned: TRL 5–6

Industrial prototyping, battery packaging design and validation under demanding operating conditions.

Inside the development programme

Experimental battery cells connected to test equipment — Experimental cells connected to test equipment. Original photograph supplied by QUANTUMAT.

Experimental battery coin cells — Coin cells used during experimental development.

APPLICATIONS & COLLABORATION

Battery development for UAV requirements

UAVs are the initial application focus, where battery mass, flight duration and charging time shape the design requirements. Aerospace and other battery applications form part of the longer-term development outlook.

Work with QUANTUMAT

We welcome discussions on active materials, binders and electrolytes, cell prototyping, manufacturing processes and application testing.

Discuss a battery collaboration

Experimental development

Researchers working with a glovebox during battery development — Experimental work at the glovebox.

2D-HEBAT and commercial reference: specific capacity versus cycle number at different C-rates — Rate-performance comparison from the QUANTUMAT project presentation. Specific capacity refers to anode active material, not full-cell energy density.

Preparing electrodes and assembling experimental cells to evaluate electrochemical behaviour and guide the next development steps.

Collaborations & Partnerships

Scientific collaborations supporting the development of 2D-HEBAT.

Sorbonne Université

Active materials development.

Technical University of Crete