Thin Na-B"-Alumina Electrolytes by Electrochemical Vapor Deposition (EVD) for Sodium-Sulfur Batteries

钠- β (na - β)-氧化铝是用于钠硫电池的固体电解质膜，应用于负载均衡，电动汽车和卫星通信。一种新的方法来制造薄（20至50微米）的na - β -氧化铝固体电解质将进行。这种被称为电化学气相沉积（EVD）的方法已经成功地用于沉积氧化锆、钙钛矿和铈，用于固体氧化物燃料电池。该方法由气态物质反应形成多孔载体上的na - β -氧化铝薄膜组成，通过EVD进一步生长。将建造一个EVD反应堆。na - β -氧化铝膜的沉积将采用两种工艺；一步和两步的过程。该膜将在微观结构、晶体结构和电导率方面进行表征。

Sodium-beta (Na-beta)-alumina is the solid electrolyte membrane used in sodium-sulfur batteries with applications in load leveling, electric automobiles, and satellite communications. A novel method for the fabrication of thin (20 to 50 micrometers) Na-beta-alumina solid electrolytes will be undertaken. This method, known as electrochemical vapor deposition (EVD), has been used successfully to deposit zirconia, perovskites, and ceria for applications in solid oxide fuel cells. The method consists of reacting gaseous species to form a thin membrane of Na-beta-alumina over a porous support, further growth of which occurs by EVD. An EVD reactor will be built. Na-beta-alumina membranes will be deposited using two processes; a one step and a two step process. The membranes will be characterized with regards to microstructure, crystal structure and conductivity.