F. Richey
EOS,
United States
Keywords: energy storage
Summary:
Aqueous zinc halide flow batteries were originally pioneered by Exxon Mobil and the United States Department of Energy in the early 1980s. Recently, a larger audience has become aware of the possibility of transitioning this chemistry from a flow battery design to a static battery module design, and Eos has been developing this technology in a static bipolar configuration for greater than 10 years. Additionally, recent reports have theorized why static aqueous zinc halide batteries are especially well-suited for long duration grid scale energy storage from both a technical and economical perspective. In this presentation, the Eos static zinc halide battery chemistry will be explained with a particular focus on the resilience of the chemistry, its cycle life stability, and the tradeoffs that were made during the battery development process to arrive at a product that is not only cost effective but also possesses technical advantages over incumbents from a LCOS and performance perspective. Additionally, since customers in grid storage buy entire battery systems and not just cells, some of Eos key technical and design considerations will be presented at the cell, module, and system level with an emphasis on learnings from operating field deployments and ending with a discussion around challenges that the industry as a whole must solve to move grid scale energy storage forward with increased implementation speed.