Abstract
A range of high Li+ ion conductivity solid solutions with the γ-LISICON structure forms by the substitution mechanism 3Li⇄Ga. These extend from compositions close to, but not including, Li4GeO4 up to Li2.5Ga0.5GeO4. The phase diagram for the join Li4GeO4-Li2.5Ga0.5GeO4 is presented together with lattice parameter data on the γ solid solution, a new phase β-Li2.5Ga0.5GeO4 and an ordered γ phase, c-Li2.8Ga0.4GeO4. Conductivity Arrhenius plots are markedly non-linear. A linear region is observed below ∼260 °C in which the conductivity data depend on sample pretreatment. A high temperature curved region is seen in which the data are reversible on heating/cooling cycles. Conductivities reach a maximum at the approximate composition Li3.7Ga0.1GeO4.
| Original language | English |
|---|---|
| Pages (from-to) | 351-358 |
| Number of pages | 8 |
| Journal | Solid State Ionics |
| Volume | 58 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Dec 1992 |
| Externally published | Yes |
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Phase equilibria, crystal chemistry and ionic conductivity in the LISICON system Li4GeO4-Li2.5Ga0.5GeO4. / Robertson, A.; West, A. R.
In: Solid State Ionics, Vol. 58, No. 3-4, 12.1992, p. 351-358.Research output: Contribution to journal › Article
TY - JOUR
T1 - Phase equilibria, crystal chemistry and ionic conductivity in the LISICON system Li4GeO4-Li2.5Ga0.5GeO4
AU - Robertson, A.
AU - West, A. R.
PY - 1992/12
Y1 - 1992/12
N2 - A range of high Li+ ion conductivity solid solutions with the γ-LISICON structure forms by the substitution mechanism 3Li⇄Ga. These extend from compositions close to, but not including, Li4GeO4 up to Li2.5Ga0.5GeO4. The phase diagram for the join Li4GeO4-Li2.5Ga0.5GeO4 is presented together with lattice parameter data on the γ solid solution, a new phase β-Li2.5Ga0.5GeO4 and an ordered γ phase, c-Li2.8Ga0.4GeO4. Conductivity Arrhenius plots are markedly non-linear. A linear region is observed below ∼260 °C in which the conductivity data depend on sample pretreatment. A high temperature curved region is seen in which the data are reversible on heating/cooling cycles. Conductivities reach a maximum at the approximate composition Li3.7Ga0.1GeO4.
AB - A range of high Li+ ion conductivity solid solutions with the γ-LISICON structure forms by the substitution mechanism 3Li⇄Ga. These extend from compositions close to, but not including, Li4GeO4 up to Li2.5Ga0.5GeO4. The phase diagram for the join Li4GeO4-Li2.5Ga0.5GeO4 is presented together with lattice parameter data on the γ solid solution, a new phase β-Li2.5Ga0.5GeO4 and an ordered γ phase, c-Li2.8Ga0.4GeO4. Conductivity Arrhenius plots are markedly non-linear. A linear region is observed below ∼260 °C in which the conductivity data depend on sample pretreatment. A high temperature curved region is seen in which the data are reversible on heating/cooling cycles. Conductivities reach a maximum at the approximate composition Li3.7Ga0.1GeO4.
U2 - 10.1016/0167-2738(92)90140-K
DO - 10.1016/0167-2738(92)90140-K
M3 - Article
AN - SCOPUS:0026998892
VL - 58
SP - 351
EP - 358
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 3-4
ER -