期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 24, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202000385
关键词
desalination; energy storage; ferrocyanide; flow batteries; viologen
类别
资金
- Utah State University
- Utah Science Technology and Research initiative (USTAR) UTAG award
- National Science Career Award [1847674]
- USU Presidential Doctoral Research Fellowship (PDRF) program
Here, a pH neutral aqueous organic redox flow battery (AORFB) consisting of three electrolytes channels (i.e., an anolyte channel, a catholyte channel, and a central salt water channel) to achieve integrated energy storage and desalination is reported. Employing a low cost, chemically stable methyl viologen (MV) anolyte, and sodium ferrocyanide catholyte, this desalination AORFB is capable of desalinating simulated seawater (0.56 m NaCl) down to 0.023 m salt concentration at an energy cost of 2.4 W h L-1 of fresh water-competitive with current reverse osmosis technologies. Simultaneously, the cell delivers stored energy at 79.7% efficiency with a cell voltage of 0.85 V. Furthermore, the cell is also capable of higher current operation up to 15 mA cm(-2), providing 4.55 mL of fresh water per hour. Combining energy storage and water desalination into such a bifunctional device offers the opportunity to address two growing global issues from one hardware installation.
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