Brief communication: Lithium insertion characteristics of CuNb{sub 2}O{sub 6}
- Niigata Univ. (Japan)
Chemical and electrochemical lithium intercalation reactions CuNb{sub 2}O{sub 6} with a columbite structure was examined. The chemical lithiation by n-butyllithium occurred accompanied by the formation of a new phase. Li{sub x}CuNb{sub 2}O{sub 6} (O {le} x {le} 1.9), with an apparent crystal lattice. The a axis of the new phase is a little longer (0.6 {angstrom}) than that of the parent phase. The electrochemical cell potential of Li/CuNb{sub 2}O{sub 6} almost attained a plateau at 2.6 V against Li/Li{sup +} in the range from x = 0.1 to x = 1.0 in Li{sub x}CuNb{sub 2}O{sub 6}, corresponding to the reduction from Cu{sup 2+} to Cu{sup +}. The reduction behavior in the range from x = 1.0 to x = 1.9 suggested the reduction from Nb{sup 5+} to Nb{sup 4+}.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 146463
- Journal Information:
- Journal of Solid State Chemistry, Vol. 118, Issue 1; Other Information: PBD: Aug 1995
- Country of Publication:
- United States
- Language:
- English
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