Solid electrolyte tube for sodium sulfur cells and surface...

Details Solid electrolyte tube for sodium sulfur cells and surface... Solid electrolyte tube for sodium sulfur cells and surface...

H - Electricity

01

M

319/50

H01M 2/16 (2006.01) C04B 41/53 (2006.01) C04B 41/91 (2006.01) H01M 2/18 (2006.01) H01M 10/39 (2006.01)

Patent

CA 2005899

SOLID ELECTROLYTE TUBE FOR SODIUM SULFUR CELLS AND SURFACE FINISHING PROCESS THEREOF Abstract of the Disclosure A solid electrolyte tube for sodium sulfur cells, having an outer surface of a roughness defined by an arithmetical mean deviation of the profile (Ra) of not exceeding 2.0 µm and a maximum height of the profile (Rmax) of not exceeding 15 µm, is produced by leveling the outer surface of the solid electrolyte tube in a state of green body, bisque fired and calcined body, or fired body, by means of a finishing apparatus such as a centerless grinding machine, external cylindrical grinding machine, lathe, or the like. The solid electrolyte tube having a smooth and even surface can be prevented from crack formation due to local concentration of Na ion, S, sodium polysulfide and thermal stress thereon, so that it can improve durability and reliability.

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