An electrochemical sulfur sensor based on ZrO(2)(MgO) as solid electrolyte and ZrS(2) + MgS as auxiliary electrode

作者：Liu Tao^*; Li Lin; Yu Jingkun

来源：Sensors and Actuators B: Chemical , 2009, 139(2): 501-504.

DOI：10.1016/j.snb.2009.03.049

• Sulfur sensor
• Solid electrolyte
• Auxiliary electrode
• Carbon-saturated liquid iron

A sulfur sensor Mo vertical bar Mo, Mo(2)S(3) vertical bar ZrS(2) +MgS vertical bar ZrO(2)(MgO)vertical bar Zr-S(2) + MgS vertical bar[S](Fe)vertical bar Mo was developed a nd tested in carbon-saturated liquid ion. The auxiliary electrode was ZrS(2) + MgS, which was formed on the surface of ZrO(2)(MgO) electrolyte by: ZrO(2)(MgO)(s) + 3H(2)S(g) = ZrS(2)(S) + MgS(s) + 3H(2)O(g). The results indicate that the auxiliary electrode is dense. and has a good adhesion to the solid electrolyte. ZrS(2) and MgS are stable in the carbon-saturated liquid iron where the a(o) < 1.25 x 10(-7) at 1550 K and a(o) < 2.10 x 10(-7) at 1600 K. The variations of the EMF versus [wt% S] can be obtained as follows:
E = -65.48 In[wt% S] + 134.42 (1550 K)
E = -81.18 In[wt% S] + 111.

• 出版日期2009-6-4
• 单位东北大学; 沈阳航空航天大学