Electrochemical cells for hydrogen gas production and electricity generation, and related systems and methods
AssigneeBattelle Energy Alliance, LLC
InventorsDong Ding, Hanping Ding, Wei Wu, Chao Jiang
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Abstract
An electrochemical cell comprises a first electrode, a second electrode, and a proton-conducting membrane between the first electrode and the second electrode. The first electrode comprises a layered perovskite having the general formula: DAB2O5+δ, wherein D consists of two or more lanthanide 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. The second electrode comprises a cermet material including at least one metal and at least one perovskite. Related structures, apparatuses, systems, and methods are also described.
Claims17
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.
A system for H2 gas production, comprising:
- a source of steam;
- and
- an electrochemical apparatus in fluid communication with the source of steam, and comprising:
- a housing structure configured and positioned to receive a steam stream from the source of steam;
- and
- an electrochemical cell within an internal chamber of the housing structure, and comprising:
- an anode configured to produce oxygen gas from the steam, the anode comprising 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;
- a cathode configured to produce hydrogen gas from the steam, the cathode comprising a cermet material including at least one metal and at least one perovskite;
- and
- a proton-conducting membrane between the anode and cathode.
Dependencies are inferred from the claim text.