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The First Combined Experimental and Theoretical Evaluation of Tetravalent Cation Conduction in a Solid
Author(s) -
Nunotani Naoyoshi,
Tamura Shinji,
Imanaka Nobuhito
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201300443
Subject(s) - valency , chemistry , tellurium , thermal conduction , ion , conductivity , electrolysis , fast ion conductor , ionic conductivity , solid solution , inorganic chemistry , analytical chemistry (journal) , thermodynamics , electrolyte , electrode , chromatography , physics , philosophy , linguistics , organic chemistry
Tetravalent tellurium ion conduction in solids has been demonstrated in α‐Te 2 MoO 7 by both experimental and theoretical means for the first time. Although it has been commonly considered that the Te 4+ ion will not conduct appreciably in solids due to its high valency, such conduction can be successfully achieved in solid α‐Te 2 MoO 7 , which has a 2D layered structure conducive to ion migration. The measured Te 4+ ion conductivity in solid α‐Te 2 MoO 7 (1.0 × 10 –2 S cm –1 at 530 °C) reaches the threshold required for practical applications. Evidence for Te 4+ ion conduction in α‐Te 2 MoO 7 is provided both directly by DC electrolysis results and theoretically by MEM analysis.