US 12,334,611 B2
Electrochemical devices and fuel cell systems
Yushan Yan, Newark, DE (US); and Brian Setzler, Newark, DE (US)
Assigned to University of Delaware, Newark, DE (US)
Filed by University of Delaware, Newark, DE (US)
Filed on Aug. 15, 2023, as Appl. No. 18/234,278.
Application 17/073,696 is a division of application No. 16/278,505, filed on Feb. 18, 2019, granted, now 10,811,711.
Application 18/234,278 is a continuation of application No. 17/073,696, filed on Oct. 19, 2020, granted, now 11,757,120.
Claims priority of provisional application 62/769,764, filed on Nov. 20, 2018.
Prior Publication US 2023/0395833 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 8/0612 (2016.01); B01D 53/32 (2006.01); H01M 4/90 (2006.01); H01M 4/92 (2006.01); H01M 8/0258 (2016.01); H01M 8/0656 (2016.01); H01M 8/0662 (2016.01); H01M 8/10 (2016.01); H01M 8/1018 (2016.01)
CPC H01M 8/0618 (2013.01) [B01D 53/326 (2013.01); H01M 4/9041 (2013.01); H01M 4/926 (2013.01); H01M 8/0258 (2013.01); H01M 8/0656 (2013.01); H01M 8/0681 (2013.01); H01M 8/1018 (2013.01); B01D 2257/504 (2013.01); H01M 2008/1095 (2013.01); H01M 2300/0082 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An electrochemical pump (ECP) for separating carbon dioxide from air, the ECP comprising: a cell comprising an anode, a cathode, and a membrane adjacent to and separating the anode and the cathode, the anode and the cathode being electronically connected through the membrane to form an internal current ECP (iECP),
the anode comprising an anode electrocatalyst for oxidizing a reagent to form protons or consume hydroxide ions,
the cathode comprising a cathode electrocatalyst for reducing oxygen to form hydroxide ions;
the membrane comprising an anion exchange polymer and an electronically-conductive material or an electronically-conductive anion exchange polymer; and
wherein during use of the ECP:
the reagent oxidized by the anode electrocatalyst comprises hydrogen, ammonia, hydrazine, water, methanol, ethanol, urea, or a combination thereof;
the air is supplied to the cathode and the carbon dioxide reacts with the hydroxide ions formed at the cathode to form bicarbonate ions, carbonate ions, or bicarbonate and carbonate ions;
the bicarbonate ions, carbonate ions, or bicarbonate and carbonate ions are transported to the anode through the membrane; and
the bicarbonate ions, carbonate ions, or bicarbonate and carbonate ions react at the anode to form carbon dioxide and water.