Device for and method of generating ozone

Abstract

The present invention can provide an electrode member having a substrate member and a coating member. The substrate member can be made of a material selected from the group consisting of titanium, gold coated titanium and other inert conducting materials. The coating member can have a tin dioxide modified by antimony. The electrode member of the present invention can be used for direct generation of ozone in water or through water into a gaseous state.

What is claimed is:  
     
         1 . An electrode member, comprising a substrate member and an antimony modified tin dioxide film coating member, 
 wherein the coating member comprises connected particles from about 3 nm to about 5 nm in size, and    wherein the particles comprise Sn and Sb in a ratio from about 6:1 to about 10:1.    
     
     
         2 . The electrode member according to  claim 1 , wherein the substrate member is made of a material selected from the group consisting of titanium, gold coated titanium and other inert conducting materials.  
     
     
         3 . The electrode member according to  claim 1 , wherein the substrate member is made of titanium.  
     
     
         4 . The electrode member according to  claim 3 , wherein the substrate member is spot-welded with a titanium wire.  
     
     
         5 . An electrode member comprising a substrate member and a coating member, wherein the coating member comprises a tin dioxide modified by antimony.  
     
     
         6 . The electrode member according to  claim 5 , wherein the coating member comprises connected particles of less than 5 nm in size.  
     
     
         7 . The electrode member according to  claim 6 , wherein the connected particles are from about 3 nm to about 5 nm in size.  
     
     
         8 . The electrode member according to  claim 5 , wherein the coating member comprises connected particles of Sn and Sb.  
     
     
         9 . The electrode member according to  claim 8 , wherein the Sn and Sb are in an atomic ratio of more than 6:1.  
     
     
         10 . The electrode member according to  claim 8 , wherein the Sn and Sb are in an atomic ratio of less than 10:1.  
     
     
         11 . The electrode member according to  claim 5 , wherein the coating member comprises nickel.  
     
     
         12 . The electrode member according to  claim 11 , wherein the Sb and Ni are in an atomic ratio of less than 10:1.  
     
     
         13 . The electrode member according to  claim 11 , wherein the Sb and Ni are in an atomic ratio of more than 4:1.  
     
     
         14 . A method of making an electrode member for use in generating ozone, comprising: 
 providing a substrate member comprising an inert conducting material;    providing a coating member comprising an antimony modified tin dioxide;    affixing the substrate member with the coating member;    drying the coated substrate member at about 100° C. for about ten minutes;    calcining the coated substrate member at about 520° C.;    repeating the above coating, drying, and calcining steps.    
     
     
         15 . The method according to  claim 14 , wherein the coating member comprises SnCl 4 □ 5H 2 O and SbCl 3  in an ethanol-HCl mixture.  
     
     
         16 . A method of generating ozone using the electrode member made according to  claim 1 , comprising: 
 using the electrode member as a working electrode;    applying a constant potential to the electrode member at room temperature;    wherein the ozone generated is dissolved in an electrolyte.    
     
     
         17 . The method of  claim 16 , wherein the constant potential to the electrode member applied to the electrode member ranges from about 1.5V to about 3.0V.  
     
     
         18 . A use of the electrode according to  claim 1  for direct generation of ozone in water or through water into a gaseous state.  
     
     
         19 . The use of the electrode according to  claim 18  for electrochemical generation of ozone at a concentration of electrolyte from about 0.01 M to about 0.5 M.  
     
     
         20 . The use of the electrode according to  claim 19 , wherein the electrolyte is selected from the group consisting of HClO 4 , H 2 SO 4  and H 3 PO 4 .  
     
     
         21 . An ozone generation system comprising an electrode according to  claim 1  for electrochemical generation of ozone.  
     
     
         22 . The ozone generation system according to  claim 21 , further comprising a solid polymer electrolyte.  
     
     
         23 . The ozone generation system according to  claim 22 , wherein the solid polymer electrolyte is Nafion.  
     
     
         24 . An ozone material comprising approximately 35 mg/l aqueous ozone with over 15% current efficiency.  
     
     
         25 . The ozone material according to  claim 24 , wherein the 15% current efficiency only accounts for the dissolved ozone.  
     
     
         26 . The ozone material according to  claim 24 , wherein the aqueous ozone is generated in a 6 min constant potential polarization at low electrolyte concentration at room temperate.