Formulation of Conductive Inks for DIW Printed Battery Electrodes

Technical Report · Fri Aug 23 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2439676· OSTI ID:2439676

Lawson, Preston ^[1]; Freyman, Megan C. ^[2]; Chandrasekaran, Swetha ^[2]

---

1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); California State University, Chico, CA (United States)
2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Ink formulations for DIW printing of Li ion battery electrodes were optimized for high conductivity, surface area and printability. Our focus is particularly on optimizing Li-ion battery electrodes for low temperature applications by 3-D printing the cathodes into high surface area shapes. The sluggish kinetics of ion transport at the solid-electrolyte phase boundary can be a major problem in batteries at low temperatures, so optimizing for ion transport can help combat these issues. Two families of DIW ink were investigated; aqueous conductive polymer suspension with graphene nano platelets (GNP) ink, and “oil in water” graphene oxide (GO) micro emulsion ink which carbonizes to an open cell graphene aerogel. By iterative formulation changes, the conductivity of PEDOT:PSS based ink was increased over tenfold, and stiffness of GO emulsion ink was increased to provide better printability without sacrificing porosity.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 2439676
• Report Number(s): LLNL--TR-868658; 1104704
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE