3D Printed Activated Carbon Aerogel Capacitor Material: Improving the performance of flow-through devices

3D Printed Activated Carbon Aerogel Capacitor Material: Improving the performance of flow-through devices

Lawrence Livermore National Laboratory (LLNL), operated by the Lawrence Livermore National Security (LLNS), LLC under contract no. DE-AC52-07NA27344 (Contract 44) with the U.S. Department of Energy (DOE), is offering the opportunity to license an innovative technology for collaborative research and development for commercialization.

Carbon aerogels are porous solid with interconnected carbon particles and hence, exhibit high surface area and electrical conductivity along with structural stability. Previous studies have shown that activated carbon aerogels are promising electrode materials However, the pores of bulk aerogel do not have sufficient connectivity to allow flow for applications such as for flow through batteries, catalysis and capacitive deionization (CDT).

LLNL researchers have developed a process and direct ink writing (DIW) inks for fabricating structured carbon aerogels.  This approach gives control over channel size and geometries of organic and carbon aerogels. The 3D printed Resorcinol-Formaldehyde (RF) ink structures are activated to yield high surface area carbon aerogels.

 

Abstract: 
LLNL researchers have developed a process and direct ink writing (DIW) inks for fabricating structured carbon aerogels. This approach gives control over channel size and geometries of organic and carbon aerogels.
Benefits: 
  • LLNL’s fabrication process uses 3D printed structures with channels in one direction for bulk flow. Bulk flow allows for lower flow resistance (and thus lower pumping costs) while still having high surface area and high electrical conductivity for efficient salt removal.
  • The 3D printed parts can have a feature size as low as 100 microns.
applications: 
Internal Laboratory Ref #: 
35117
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