Flow cell systems, flow cell batteries, and hydrogen production processes

Patent · Tue Jun 29 00:00:00 EDT 2021

OSTI ID:1824132

Wang, Wei; Nie, Zimin; Sprenkle, Vincent L.; Holladay, Jamelyn D.

Flow cell systems are provided. Example flow cell systems can include an H⁺/H₂ half-cell and a counterpart Fe³⁺/Fe²⁺ or V⁵⁺/V⁴⁺ half-cell. Flow cell systems can also include a half-cell in fluid communication with an electrolyte regeneration chamber. Embodiments of these flow cells systems can be configured to produce hydrogen through electrolysis. Flow cell battery systems are also disclosed. Example flow cell battery systems can include an H⁺/H₂ analyte; and a counterpart Fe³⁺/Fe²⁺ or V⁵⁺/V⁴⁺ catholyte. Processes for generating hydrogen are also disclosed. Example processes can include generating protons from a Fe³⁺/Fe²⁺ or V⁵⁺/V⁴⁺ electrolyte solution; and reacting the protons with H₂O to form H₂.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): 11,050,076
• Application Number: 15/004,717
• OSTI ID: 1824132
• Resource Relation: Patent File Date: 01/22/2016
• Country of Publication: United States
• Language: English