期刊
JOURNAL OF ENERGY STORAGE
卷 44, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.est.2021.103327
关键词
Zinc-iron redox flow battery; Large-scale energy storage; System cost; Sensitivity analysis
资金
- Chinese Academy of Sciences (CAS) Program [KJ2090130001]
- Shanghai JINGYI Electrical Apparatus Factory Co. [ES2090130106]
- USTC Tang Scholar [KY2090000065]
- Hong Kong Polytechnic University (G-YW2D) [PolyU 152214/17E, PolyU 152064/18E]
- Research Grant Council, University Grants Committee, Hong Kong SAR
The study presents a cost model for alkaline zinc-iron flow battery system and achieves a capital cost below the target cost. Results show that low flow rate, high porosity thin electrodes, and PBI membrane are more cost-effective compared to Nafion 212 membrane.
Alkaline zinc-iron flow batteries attract great interest for remarkable energy density, high safety, environmentally benign. However, comprehensive cost evaluation and sensitivity analysis of this technology are still absent. In this work, a cost model for a 0.1 MW/0.8 MWh alkaline zinc-iron flow battery system is presented, and a capital cost under the U.S. Department of Energy's target cost of 150 $ per kWh is achieved. Besides, the effects of electrode geometry, operating conditions, and membrane types on the system cost are investigated. The results illustrate that a low flow rate and thin electrodes with high porosity contribute to low capital costs under low current densities. Furthermore, the porous polybenzimidazole (PBI) membrane is more cost-effective than Nafion 212 membrane. This work provides an integrated estimation for the zinc-iron flow battery system, demonstrating its tremendous potential for grid-level energy storage applications.
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