This data set accompanies the article "A Coacervate-Based Mixed-Conducting Binder for High-Power, High-Energy Batteries" published in ACS Energy Letters in 2023 (https://doi.org/10.1021/acsenergylett.3c00829). The article demonstrates a strategy for imparting electronic and ionic conductivity to battery binders, while also maintain facile processing capability. 

Polymer binders add crucial structural integrity to lithium ion battery composite cathodes, but industry standard binders, such as polyvinylidene fluoride (PVDF), are insulating to ions and electrons, detrimentally adding resistance to the overall system. In this work, we use electrostatics to stabilize a blend of a charged conjugated polymer with an oppositely charged polyelectrolyte, providing a processable, stable binder with high ionic and electronic conduction. Using LiFePO₄ cathodes as a model system, we show significant improvement in rate capability and stability, with the conducting binder enabling a 39% utilization at 6C compared to 1.6% when PVDF is the binder. Additionally, the conducting binder affords a 63% capacity retention over 400 C/2 cycles, compared to only a 6% retention over 400 cycles when PVDF is the binder. These results show that electrostatically stabilized complexation is a promising strategy to integrate both electronic and ionic conductivity into a binder, while simultaneously maintaining stability and processability.

This data set contains the comprehensive electrochemical characterization information- including cyclic voltammetry, galvanostatic intermittent titration technique, variable rate cycling, cycle stability, and ionic/electronic conductivity measurements. Data is presented in non-proprietary txt and csv formats. Technique and sample identification is contained in the file titles, which correspond to figure numbers. Every column in each data file contains a header indicating the data that was recorded and the unit in which it was recorded.

Data is in non-proprietary csv and txt formats