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Alternative low cost electrodes for hybrid flow batteries

Patent ·
OSTI ID:1893092
; ;
A redox flow battery may include: a membrane interposed between a first electrode positioned at a first side of the membrane and a second electrode positioned at a second side of the membrane opposite to the first side; a first flow field plate comprising a plurality of positive flow field ribs, each of the plurality of positive flow field ribs contacting the first electrode at first supporting regions on the first side; and the second electrode, including an electrode spacer positioned between the membrane and a second flow field plate, the electrode spacer comprising a plurality of main ribs, each of the plurality of main ribs contacting the second flow field plate at second supporting regions on the second side, each of the second supporting regions aligned opposite to one of the plurality of first supporting regions. As such, a current density distribution at a plating surface may be reduced.
Research Organization:
ESS Tech, Inc., Portland, OR (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
DOE Contract Number:
AR0000261
Assignee:
ESS Technology, Inc. (Portland, OR)
Patent Number(s):
11,374,236
Application Number:
15/601,560
OSTI ID:
1893092
Country of Publication:
United States
Language:
English

References (2)

Performance enhancement of iron-chromium redox flow batteries by employing interdigitated flow fields journal September 2016
A hydrogen-ferric ion rebalance cell operating at low hydrogen concentrations for capacity restoration of iron-chromium redox flow batteries journal June 2017

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