Study on the low-cost flow battery technologies for energy storage

doi:10.19799/j.cnki.2095-4239.2019.0035

Abstract

Abstract: The large-scale energy storage technology is the core technology to realize the gridconnection and popularization of renewable energies. It is also the key enabling technology to develop energy internet, distributed power generation, auxiliary services, off-grid power supply, safe backup power and other fields. The flow battery is an emerging large-scale energy storage technology. After the rapid development in recent years, it has the competitiveness for large-scale applications. The flow battery has features of safety, long energy storage time in single cycle, independent power/capacity design, large energy storage capacity and long cycle life. The high cost of flow battery restricts the commercialization of flow battery energy storage technology. Aiming at the "pain point" of this industry, a flow battery is developed through innovative battery structure, new key materials and process research in this work. The power density of this flow battery stack is increased by 2~4 times. The miniaturization of flow battery stack was realized. The utilization ratio of key components is effectively improved, and the cost of this flow battery system is expected to be reduced by 20%~30% compared to present flow battery.

Key words: large-scale energy storage technology, low-cost electrochemical energy storage, flow battery, battery stack, high power density

CLC Number:

TM912

LIU Qinghua, ZHANG Sai, JIANG Mingzhe, WANG Qiushi, XING Xueqi, YANG Hong, HUANG Feng, LEMMON P John, MIAO Ping. Study on the low-cost flow battery technologies for energy storage[J]. Energy Storage Science and Technology, 2019, 8(S1): 60-64.

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