NCRC 2018
January 18-20, 2018
Poster Presentation
Title:
Effect of Shear Rate and Drying Speed during Battery Electrode Processing
Abstract:
Processing conditions of battery slurries into electrodes are known to affect final battery performance. However, there is a lack of fundamental understanding of how to control processing conditions to achieve better batteries. Previous work has focused on the formulation step of the battery manufacturing process. This study concentrates on two of the slurry processing steps, namely coating and drying, and their effect on film quality and electrode performance. Rheological measurements were used to determine the starting slurry microstructure as well as determining the effect of flow on microstructure evolution. Well-characterized slurries were subjected to a series of shear rates and drying temperatures to examine the effect of flow and drying rate on final electrode performance. The data suggests that there is a complex relationship between surface roughness and shear rate/temperature, but ultimately, performance based on shear rate is dependent on drying time. While more data is needed to make concrete conclusions, the preliminary data presented here shows for the first time quantitative relationships between processing conditions and battery performance.
January 18-20, 2018
Poster Presentation
Title:
Effect of Shear Rate and Drying Speed during Battery Electrode Processing
Abstract:
Processing conditions of battery slurries into electrodes are known to affect final battery performance. However, there is a lack of fundamental understanding of how to control processing conditions to achieve better batteries. Previous work has focused on the formulation step of the battery manufacturing process. This study concentrates on two of the slurry processing steps, namely coating and drying, and their effect on film quality and electrode performance. Rheological measurements were used to determine the starting slurry microstructure as well as determining the effect of flow on microstructure evolution. Well-characterized slurries were subjected to a series of shear rates and drying temperatures to examine the effect of flow and drying rate on final electrode performance. The data suggests that there is a complex relationship between surface roughness and shear rate/temperature, but ultimately, performance based on shear rate is dependent on drying time. While more data is needed to make concrete conclusions, the preliminary data presented here shows for the first time quantitative relationships between processing conditions and battery performance.