{HEAD ~ The sensor} 4, wherein {TAIL ~ the species} sensing electrode portion is doped with a material selected from the group consisting of Ce, Pb, Ag, Mn, Mo, W, Ca, Li, Na, K, Cs, Zr, Ge, Sb, Mg, Sr, Sc, Ti, Nb, Fe, Co, Ni, Cu, Rh, Pd, Ga, In, and Sn, and mixtures and combinations thereof 
wherein
{ HEAD ~ The sensor } 4 , wherein { TAIL ~ the species } sensing electrode portion is doped with a material selected from the group consisting of Ce , Pb , Ag , Mn , Mo , W , Ca , Li , Na , K , Cs , Zr , Ge , Sb , Mg , Sr , Sc , Ti , Nb , Fe , Co , Ni , Cu , Rh , Pd , Ga , In , and Sn , and mixtures and combinations thereof
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