Unlocking the capacity of iodide for high-energy-density zinc/polyiodide and lithium/polyiodide redox flow batteries
Publication in refereed journal

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其它資訊
摘要Highly soluble iodide/triiodide (I-/I-3(-)) couples are one of the most promising redox-active species for high-energy-density electrochemical energy storage applications. However, to ensure high reversibility, only two-thirds of the iodide capacity is accessed and one-third of the iodide ions act as a complexing agent to stabilize the iodine (I-2), forming I-3(-)(I2I(-)). Here, we exploit bromide ions (Br-) as a complexing agent to stabilize the iodine, forming iodine-bromide ions (I2Br-), which frees up iodide ions and increases the capacity. Applying this strategy, we demonstrate a novel zinc/iodine-bromide battery to achieve an energy density of 101 W h Lposolyte+negolyte 1 (or 202 W h L-posolyte 1), which is the highest energy density achieved for aqueous flow batteries to date. This strategy can be further generalized to nonaqueous iodide-based batteries (i.e. lithium/polyiodide battery), offering new opportunities to improve high-energy iodide-based energy storage technologies.
出版社接受日期16.02.2017
著者Guo-Ming Weng, Zhejun Li, Guangtao Cong, Yucun Zhou, Yi-Chun Lu
期刊名稱Energy and Environmental Science
詳細描述I.F. = 29.518 (2016)
I.F. = 24.781 (5 year)
出版年份2017
月份2
日期16
卷號10
期次3
出版社ROYAL SOC CHEMISTRY
頁次735 - 741
國際標準期刊號1754-5692
電子國際標準期刊號1754-5706
語言英式英語
Web of Science 學科類別Chemistry, Multidisciplinary;Energy & Fuels;Engineering, Chemical;Environmental Sciences;Chemistry;Energy & Fuels;Engineering;Environmental Sciences & Ecology

上次更新時間 2021-28-02 於 02:07