US 12,359,327 B2
Electrochemical cells for hydrogen gas production and electricity generation, and related systems and methods
Dong Ding, Idaho Falls, ID (US); Hanping Ding, Idaho Falls, ID (US); Wei Wu, Idaho Falls, ID (US); and Chao Jiang, Ammon, ID (US)
Assigned to Battelle Energy Alliance, LLC, Idaho Falls, ID (US)
Appl. No. 17/309,012
Filed by Battelle Energy Alliance, LLC, Idaho Falls, ID (US)
PCT Filed Oct. 28, 2019, PCT No. PCT/US2019/058287
§ 371(c)(1), (2) Date Apr. 13, 2021,
PCT Pub. No. WO2020/092203, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/751,969, filed on Oct. 29, 2018.
Prior Publication US 2021/0388515 A1, Dec. 16, 2021
Int. Cl. C25B 11/053 (2021.01); C25B 1/042 (2021.01); C25B 9/23 (2021.01); C25B 11/091 (2021.01); C25B 13/00 (2006.01); C25B 15/023 (2021.01)
CPC C25B 11/053 (2021.01) [C25B 1/042 (2021.01); C25B 9/23 (2021.01); C25B 11/091 (2021.01); C25B 13/00 (2013.01); C25B 15/023 (2021.01)] 17 Claims
OG exemplary drawing
 
1. An electrochemical cell for hydrogen gas production, comprising:
an anode configured to produce oxygen gas from steam;
a cathode configured to produce hydrogen gas from the steam; and
a proton-conducting membrane between the anode and the cathode,
wherein the anode comprises a layered perovskite having a general formula:
DAB2O5+δ,
wherein:
D consists of two or more lanthanide (Ln) elements;
A consists of one or more of Sr and Ba;
B consists of one or more of Co, Fe, Ni, Cu, Zn, Mn, Cr, and Nd; and
δ is an oxygen deficit, and
wherein the cathode comprises a cermet material including at least one metal and at least one perovskite.