US 11,855,312 B2
Alternative low cost electrodes for hybrid flow batteries
Craig E. Evans, West Linn, OR (US); Sean Casey, Portland, OR (US); and Yang Song, West Linn, OR (US)
Assigned to ESS TECH, INC., Wilsonville, OR (US)
Filed by ESS TECH, INC., Wilsonville, OR (US)
Filed on Mar. 4, 2022, as Appl. No. 17/653,620.
Application 17/653,620 is a division of application No. 15/601,560, filed on May 22, 2017, granted, now 11,374,236.
Application 15/601,560 is a continuation in part of application No. 14/984,416, filed on Dec. 30, 2015, granted, now 11,043,679, issued on Jun. 22, 2021.
Claims priority of provisional application 62/098,200, filed on Dec. 30, 2014.
Prior Publication US 2022/0231309 A1, Jul. 21, 2022
Int. Cl. H01M 8/0258 (2016.01); H01M 8/18 (2006.01); H01M 8/0239 (2016.01); H01M 4/88 (2006.01); H01M 8/20 (2006.01); H01M 8/0245 (2016.01)
CPC H01M 8/0258 (2013.01) [H01M 4/8803 (2013.01); H01M 4/8817 (2013.01); H01M 4/8828 (2013.01); H01M 8/0239 (2013.01); H01M 8/0245 (2013.01); H01M 8/188 (2013.01); H01M 8/20 (2013.01); Y02E 60/50 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of assembling a redox flow battery, comprising: on a plating side of a membrane, sandwiching a plating electrolyte flow field and a plating electrode spacer between the membrane and a plating flow field plate, the plating electrode spacer comprising a plurality of main ribs; on a redox side of the membrane, sandwiching a redox electrolyte flow field between a redox electrode and a redox flow field plate, the redox electrode comprising a plurality of positive flow field ribs; and aligning each of the plurality of main ribs with the plurality of positive flow field ribs, wherein upon compressing the plating flow field plate and the redox flow field plate towards the membrane, the main ribs are opposingly supported by the positive flow field ribs across the membrane without substantially changing a dimension of the plating electrolyte flow field, further comprising forming the plurality of main ribs and forming a plurality of support ribs transversely connected in a non-woven manner to the plurality of main ribs.