Carbon dioxide electrolysis cell and carbon dioxide electrolysis device

Abstract

A carbon dioxide electrolysis cell of the present invention is a raw material solution supply type carbon dioxide electrolysis cell, including a cathode section having a cathode-side solution flow path, an anode section having an anode-side solution flow path, and a diaphragm arranged between the cathode section and the anode section, wherein the cathode section includes a cathode and a cathode-side solution flow path forming member that forms a cathode-side solution flow path between itself and the cathode, wherein the anode section includes an anode, and an anode-side solution flow path forming member that forms an anode-side solution flow path between itself and the anode, and wherein the cathode-side solution flow path forming member includes a flow blocking convex part that obstructs a flow of a cathode-side solution flowing through the cathode-side solution flow path.

What is claimed is: 
     
         1 . A carbon dioxide electrolysis cell,
 being a raw material solution supply type, and comprising;   a cathode section having a cathode-side solution flow path, an anode section having an anode-side solution flow path, and a diaphragm arranged between the cathode section and the anode section,   wherein the cathode section includes a cathode including a gas diffusion layer and a cathode catalyst layer, and a cathode-side solution flow path forming member that forms a cathode-side solution flow path between itself and the cathode,   wherein the anode section includes an anode and an anode-side solution flow path forming member that forms an anode-side solution flow path between itself and the anode, and   wherein the cathode-side solution flow path forming member includes a flow blocking convex part that projects toward the cathode-side solution flow path so that it obstructs a flow of a cathode-side solution flowing through the cathode-side solution flow path and extends in a direction intersecting a flow direction of the cathode-side solution.   
     
     
         2 . The carbon dioxide electrolysis cell according to  claim 1 ,
 wherein the cathode-side solution flow path forming member includes a concave part that projects in a direction opposite to the projection direction on the upstream side before the flow blocking convex part.   
     
     
         3 . The carbon dioxide electrolysis cell according to  claim 1 ,
 wherein the anode includes a gas diffusion layer and an anode catalyst layer, and the anode-side solution flow path forming member includes a flow blocking convex part that projects toward the anode-side solution flow path so that it obstructs a flow of the anode-side solution flowing through the anode-side solution flow path and extends in a direction intersecting a flow direction of the anode-side solution.   
     
     
         4 . The carbon dioxide electrolysis cell according to  claim 1 ,
 wherein the anode-side solution flow path forming member includes a concave part that projects in a direction opposite to the projection direction on the upstream side before the flow blocking convex part.   
     
     
         5 . A carbon dioxide electrolysis device, comprising
 the carbon dioxide electrolysis cell according to  claim 1 , a first feed conductor, a second feed conductor, and a power source device.   
     
     
         6 . A carbon dioxide electrolysis device, comprising
 the carbon dioxide electrolysis cell according to  claim 2 , a first feed conductor, a second feed conductor, and a power source device.   
     
     
         7 . A carbon dioxide electrolysis device, comprising
 the carbon dioxide electrolysis cell according to  claim 3 , a first feed conductor, a second feed conductor, and a power source device.   
     
     
         8 . A carbon dioxide electrolysis device, comprising
 the carbon dioxide electrolysis cell according to claim  4 , a first feed conductor, a second feed conductor, and a power source device.   
     
     
         9 . A carbon dioxide electrolysis device, comprising the plurality of carbon dioxide electrolysis cells according to  claim 1 , and further comprising a first feed conductor, a second feed conductor, and a power source device. 
     
     
         10 . A carbon dioxide electrolysis device, comprising the plurality of carbon dioxide electrolysis cells according to  claim 2 , and further comprising a first feed conductor, a second feed conductor, and a power source device. 
     
     
         11 . A carbon dioxide electrolysis device, comprising the plurality of carbon dioxide electrolysis cells according to  claim 3 , and further comprising a first feed conductor, a second feed conductor, and a power source device. 
     
     
         12 . A carbon dioxide electrolysis device, comprising the plurality of carbon dioxide electrolysis cells according to  claim 4 , and further comprising a first feed conductor, a second feed conductor, and a power source device. 
     
     
         13 . The carbon dioxide electrolysis device according to  claim 9 ,
 wherein a cathode-side solution flow path forming member included in one carbon dioxide electrolysis cell among the plurality of carbon dioxide electrolysis cells, and an anode-side solution flow path forming member included in a carbon dioxide electrolysis cell adjacent to the one carbon dioxide electrolysis cell are common members, and a solution flow path is formed on the front side and the back side of the common members.   
     
     
         14 . The carbon dioxide electrolysis device according to  claim 10 ,
 wherein a cathode-side solution flow path forming member included in one carbon dioxide electrolysis cell among the plurality of carbon dioxide electrolysis cells, and an anode-side solution flow path forming member included in a carbon dioxide electrolysis cell adjacent to the one carbon dioxide electrolysis cell are common members, and a solution flow path is formed on the front side and the back side of the common members.   
     
     
         15 . The carbon dioxide electrolysis device according to  claim 11 ,
 wherein a cathode-side solution flow path forming member included in one carbon dioxide electrolysis cell among the plurality of carbon dioxide electrolysis cells, and an anode-side solution flow path forming member included in a carbon dioxide electrolysis cell adjacent to the one carbon dioxide electrolysis cell are common members, and a solution flow path is formed on the front side and the back side of the common members.   
     
     
         16 . The carbon dioxide electrolysis device according to  claim 12 ,
 wherein a cathode-side solution flow path forming member included in one carbon dioxide electrolysis cell among the plurality of carbon dioxide electrolysis cells, and an anode-side solution flow path forming member included in a carbon dioxide electrolysis cell adjacent to the one carbon dioxide electrolysis cell are common members, and a solution flow path is formed on the front side and the back side of the common members.