Three-Dimensional Printed Segmented Electrodes for Water Desalination

Michael Stadermann | 19-FS-025


Our goal in this study was to use additive manufacturing techniques to produce capacitive deionization (CDI) devices for water desalination with improved performance. Electrode thickness is a principal driver of CDI device resistance, and, therefore, the energy consumption of the device. Direct ink writing, two-photon polymerization, and microstereolithography were used to produce segmented electrodes for CDI with a lower thickness than can be produced currently with bulk fabrication methods. While we identified several pitfalls for producing interdigitated electrodes with low thickness and potential paths to overcome them, we were unable to print a useful structure within the scope of this project.

Impact on Mission

The project highlighted research and development opportunities for ink and method development ultimately supporting the Lawrence Livermore National Laboratory Director's initiative to strengthen capabilities in advanced materials and manufacturing.