Accession Number : AD0634061

Title :   CONDUCTIVITY OF LITHIUM-SUBSTITUTED TRANSITION METAL OXIDES CONTAINING MAGNESIUM,

Corporate Author : LEHIGH UNIV BETHLEHEM PA

Personal Author(s) : Hahn,W. C. , Jr

Report Date : JUN 1966

Pagination or Media Count : 4

Abstract : Li(sub x)Ni(1-x)O, Li(sub x)Mn(1-x)O, and Li(sub x)Co(1 -x)O. It is proposed in this investigation to measure the effect on the room temperature specific resistivity of additions of MgO to systems such as LixNi(1-x)O, LixMn(1-x)O, and LixCo(1-x)O. Because the divalent state of magnesium is so stable, it will not enter into the conductivity process directly, but it can be anticipated that it can confer several beneficial results on the conductivity in the above named oxide systems. It is realized that extremely large additions of MgO to any of the systems under consideration, as well as additions of MgO to systems in which the amount of lithium is very small, would serve only to increase the resistivity, but it can be anticipated that a region of compositions may be found in which the resistivity will be decreased. An additional reason for adding MgO, and perhaps ultimately the most important, is that existing theories do not explain the maximum in the activation energy observed at approximately 50% nickel in the system Li(sub 0.08)Ni(sub y)Co(1-0.08-y)O observed by Miller, Heikes and Johnston (J. Chem. Phys. 31:116 (1959)). (Author)

Descriptors :   (*TRANSITION METALS, ELECTRICAL CONDUCTIVITY), (*MAGNESIUM COMPOUNDS, OXIDES), (*LITHIUM COMPOUNDS, OXIDES), (*NICKEL COMPOUNDS, OXIDES), (*MANGANESE COMPOUNDS, OXIDES), (*COBALT COMPOUNDS, OXIDES), TEMPERATURE, HEAT OF ACTIVATION, SOLID SOLUTIONS, ELECTRICAL RESISTANCE

Subject Categories : Physical Chemistry
      Electricity and Magnetism
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE