Electrode, solid electrolyte electrolysis device, and synthetic gas production method

Abstract

Techniques may relate to an electrode having high production efficiency of a synthetic gas containing at least CO. Such techniques relating to an electrode may include: a catalyst that produces at least carbon monoxide by a reduction reaction; an electrode material including the catalyst; and a solid base additive provided at least on the electrode material.

1 . An electrode, comprising:
 a catalyst suitable to produce at least carbon monoxide by a reduction reaction;   an electrode material comprising the catalyst; and   a solid base additive provided at least on the electrode material.   
     
     
         2 . The electrode of  claim 1 , wherein the electrode is a cathode. 
     
     
         3 . The electrode of  claim 1 , wherein the solid base additive is an oxide of an alkaline earth metal, a hydroxide of an alkaline earth metal, a carbide of an alkaline earth metal, an oxide of a rare earth metal, a hydroxide of a rare earth metal, or a carbonate of a rare earth metal. 
     
     
         4 . A solid electrolyte electrolysis device, comprising:
 a cathode comprising a catalyst suitable to produce at least carbon monoxide by a reduction reaction;   an anode that constitutes a pair of electrodes with the cathode;   a solid electrolyte interposed between the cathode and the anode with the solid electrolyte being in contact with the cathode and the anode; and   a voltage application part configured to apply a voltage between the cathode and the anode,   wherein the cathode further comprises a solid base additive.   
     
     
         5 . The device of  claim 4 , wherein the solid base additive is present on a side of a contact surface with the solid electrolyte of the cathode. 
     
     
         6 . The device of  claim 4 , wherein the solid base additive is an oxide of an alkaline earth metal, a hydroxide of an alkaline earth metal, a carbide of an alkaline earth metal, an oxide of a rare earth metal, a hydroxide of a rare earth metal, or a carbonate of a rare earth metal. 
     
     
         7 . The device of  claim 4 , wherein the solid electrolyte is an anion exchange membrane. 
     
     
         8 . The device of  claim 4 , wherein the solid electrolyte is a cation exchange membrane. 
     
     
         9 . A synthetic gas production method, comprising:
 supplying a reaction gas to a solid electrolyte electrolysis device comprising a cathode comprising a catalyst, an anode that constitutes a pair of electrodes with the cathode, a solid electrolyte interposed between the cathode and the anode with the solid electrolyte being in contact with the cathode and the anode, and a voltage application part configured to apply a voltage between the cathode and the anode, wherein the cathode further comprises a solid base additive;   producing a synthetic gas comprising carbon monoxide by a reduction reaction caused by the reaction gas being brought into contact with the cathode; and   collecting the synthetic gas.   
     
     
         10 . The electrode of  claim 2 , wherein the solid base additive is an oxide of an alkaline earth metal, a hydroxide of an alkaline earth metal, a carbide of an alkaline earth metal, an oxide of a rare earth metal, a hydroxide of a rare earth metal, or a carbonate of a rare earth metal. 
     
     
         11 . The device of  claim 5 , wherein the solid base additive is an oxide of an alkaline earth metal, a hydroxide of an alkaline earth metal, a carbide of an alkaline earth metal, an oxide of a rare earth metal, a hydroxide of a rare earth metal, or a carbonate of a rare earth metal. 
     
     
         12 . The device of  claim 5 , wherein the solid electrolyte is an anion exchange membrane. 
     
     
         13 . The device of  claim 6 , wherein the solid electrolyte is an anion exchange membrane. 
     
     
         14 . The device of  claim 11 , wherein the solid electrolyte is an anion exchange membrane. 
     
     
         15 . The device of  claim 5 , wherein the solid electrolyte is a cation exchange membrane. 
     
     
         16 . The device of  claim 6 , wherein the solid electrolyte is a cation exchange membrane. 
     
     
         17 . The device of  claim 11 , wherein the solid electrolyte is a cation exchange membrane.