Solid-state reference electrode, has electrolyte and/or electrolyte retainer covered against environment by porous ceramic membrane, which is formed as composite with pores from glass phase and crystalline phase

摘要

The electrode has an electrochemically active reference system (1.2) electrical conductively connected with a contact element (1) using a strip conductor (1.1) over plated-through holes (1.5, 1.6), where the contact element is arranged on a surface of a ceramic substrate (3). An electrolyte (1.3.1) and/or an electrolyte retainer (1.3) are covered against environment by a porous ceramic membrane (1.4) that is in direct contact with the reference system in a direction of a measuring area. The porous ceramic membrane is formed as composite with pores from a glass phase and a crystalline phase. The ceramic substrate is formed with multiple sintered layers (L1-L3), which consist of glass ceramic, zirconia, alumina or aluminum nitride, HTCC or LTCC films. An independent claim is also included for a method for manufacturing a solid-state reference electrode.