Volts Are we finally getting 3D-printed batteries?
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Sep 17, 2025 Karl Littau, CTO of Sakuu and a materials scientist known for his work in sustainability, discusses revolutionary dry printing technology for batteries. He reveals how this method eliminates toxic solvents and drastically reduces environmental impact. Sakuu claims it can print multiple battery types with efficiency and speed. Littau also explores innovations such as new materials, applications for supercapacitors, and the future of distributed printing, suggesting a world where batteries are custom-made efficiently and safely.
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Dry Printing Replaces Solvent-Based Coating
- Dry electrode printing removes toxic solvents and ovens, cutting waste and emissions compared with wet coating.
- The dry process compacts powders with heat and pressure to form electrodes without liquid slurries.
Formulation Matters As Much As Hardware
- Dry powder formulation is as important as the printing equipment for performance.
- You cannot simply remove solvents from wet recipes; powders need engineered reformulation.
Run Multiple Chemistries On One Machine
- Use the same printer hardware for multiple chemistries by developing distinct dry printable powders.
- Adjust only process parameters when switching recipes rather than replacing machines.