A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-Scale Energy Storage
A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-Scale Energy Storage
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DOI：
10.1002/aenm.201100008
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发表时间：
2011-05-01
影响因子：
27.8
通讯作者：
Yang, Zhenguo
中科院分区：
文献类型：
--
作者：
Li, Liyu;Kim, Soowhan;Yang, Zhenguo
全钒氧化还原液流电池是一种有前途的大规模可再生能源和电网储能技术，但受到钒电解质溶液能量密度低和稳定性差的限制。本文报道了一种新的钒氧化还原液流电池，该电池在现有技术的基础上进行了重大改进。这种电池使用硫酸盐-氯化物混合电解质，能够溶解2.5 M钒，比目前的硫酸盐系统能量容量增加约70%。更重要的是，新的电解质在-5至50 ℃的宽温度范围内保持稳定，从而潜在地消除了在实际应用中对电解质温度控制的需要。这一发展将导致储能成本的大幅降低，从而加速其市场渗透。
The all-vanadium redox flow battery is a promising technology for large-scale renewable and grid energy storage, but is limited by the low energy density and poor stability of the vanadium electrolyte solutions. A new vanadium redox flow battery with a significant improvement over the current technology is reported in this paper. This battery uses sulfate-chloride mixed electrolytes, which are capable of dissolving 2.5 M vanadium, representing about a 70% increase in energy capacity over the current sulfate system. More importantly, the new electrolyte remains stable over a wide temperature range of -5 to 50 C, potentially eliminating the need for electrolyte temperature control in practical applications. This development would lead to a significant reduction in the cost of energy storage, thus accelerating its market penetration.