| http://www.w3.org/ns/prov#value | - Still additionally, preferably, in areas other than the electrode 21 and others on the solid electrolyte plates 14 and 16, particularly in the formation areas of the electrode lead portion 211 and others, insulating layers (not shown), such as alumina, are formed between the solid electrolyte plates 14, 16 and the electrode lead portions 211, 321, 421 and others.
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