The　DSA　anodes　based　on　RuO2-SnO2　oxides　are　most　employed　in　chlorine-alkali　cells.　Their　properties　are　strongly　influenced　by　the　mixed-oxide　coating　structures.　In　this　paper,　two　RuO2-SnO2/Ti　DSA　anodes　with　different　Ru　and　Sn　molar　ratios　were　prepared　through　a　sol-gel　technique.　The　nano-structure,　morphology,　grain　structure　and　composition　of　the　coatings　were　investigated　by　means　of　XRD,　SEM　and　TEM.　XRD　analysis　indicates　two　rutile-type　solid　solutions　are　formed.　Peak　profile　analysis　shows　that　in　the　solid　solution　where　SnO2　is　the　major　component　smaller　crystallites　(about　20-30　Jun)　are　formed　than　in　those　where　RuO2　is　the　major　component　(about　100-200　nm).　The　SEM　images　reveal　the　coating　with　high　level　of　SnO2　possesses　more　accumulated　and　compact　structures.　The　EDS　analysis　indicates　that　two　DSA　anodes　coatings　in　which　SnO2　is　similar　to　the　designed　concentration　are　prepared　by　the　sol-gel　method.　TEM　characterization　shows　the　polygonal　crystallites　are　present　in　the　obtained　RuO2-SnO2　coatings.　The　voltages　of　Cl-2-evolution　and　O-2-evolution　suggest　both　RuO2-SnO2/Ti　DSA　anodes　have　a　good　electrochemical　performance　and　can　be　used　for　the　chlorite　industrial　productions.　(c)　2006　Published　by　Elsevier　B.V.