Novel Sodium – Polysulfide Flow Battery Grid-scale Energy Storage Technology

2022 IEEE Electrical Energy Storage Application and Technologies Conference (EESAT) Pub Date : 2022-11-08 DOI:10.1109/EESAT55007.2022.9998026

Aiden Flynn, Daniel Taggert, Josh Johnston, Mitch Christensen, Mykola Makowski, Robyn Moss, R. Kathiria, S. Bhavaraju, Steve Hughes

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Abstract

Sodium metal-based batteries have been identified as an exciting new solution to the challenge of Long Duration Energy Storage (LDES) applications. Enlighten Innovations, Inc. (EII) has developed a novel, low-cost Sodium Metal – Sodium Polysulfide Flow Battery (SPFB) enabled by its proprietary NaSICON (Sodium Super Ionic Conductor) ceramic solid-state separator. EII’s SPFB truly decouples the energy and power, unlike other metal-based batteries. EII’s SPFB operates at intermediate temperatures (below 125° C) enabling the use of low-cost materials of construction avoiding expensive sealing and manufacturing technologies of the current state of the art that results in an estimated system-level Levelized Cost of Storage (LCOS) cost of~ $0.1/kWh, which is the lowest among the current battery technologies. EII is now taking next steps towards kW scale stack performance demonstration and large-scale manufacturing.

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新型钠-聚硫液流电池电网储能技术

钠金属基电池已被确定为解决长时间储能(LDES)应用挑战的令人兴奋的新解决方案。启迪创新公司(EII)开发了一种新型的低成本金属钠-聚硫钠液流电池(SPFB)，该电池由其专有的NaSICON(钠超离子导体)陶瓷固态分离器实现。与其他金属基电池不同，EII的SPFB真正实现了能量和电力的分离。EII的SPFB在中等温度(低于125°C)下工作，可以使用低成本的建筑材料，避免了昂贵的密封和当前最先进的制造技术，导致系统级的平均存储成本(LCOS)成本约为0.1美元/千瓦时，这是目前电池技术中最低的。EII目前正朝着千瓦级堆栈性能演示和大规模制造的方向迈出下一步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE Electrical Energy Storage Application and Technologies Conference (EESAT)

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