Entire solid lithium secondary battery
View Patent ↗The present invention provides an entire solid lithium secondary battery comprising: a cathode; an anode; and a solid electrolyte layer interposed between the cathode and the anode. The solid electrolyte layer is formed of a Li (1-x) NbO 3 crystal (where 0.10≦x≦0.35) having a trigonal ilmenite crystal structure. This entire solid lithium secondary battery has a high charge-discharge property.
1. An entire solid lithium secondary battery comprising:
a cathode;
an anode; and
a solid electrolyte layer interposed between the cathode and the anode,
wherein the solid electrolyte layer is formed of a Li (1-x) NbO 3 crystal, where 0.10≦x≦0.35, having a trigonal ilmenite crystal structure.
2. The entire solid lithium secondary battery according to claim 1 , wherein
the solid electrolyte layer has a thickness of not less than 100 nanometers and not more than 20 micrometers.
3. The entire solid lithium secondary battery according to claim 1 , wherein
the Li (1-x) NbO 3 crystal is oriented along a normal line of a main surface of the solid electrolyte layer, on which one of the cathode and the anode is disposed.
4. The entire solid lithium secondary battery according to claim 1 , wherein
the Li (i-x) NbO 3 crystal is biaxially oriented along a normal line of a main surface of the solid electrolyte layer, on which one of the cathode and the anode is disposed, and an in-plane direction of the main surface of the solid electrolyte layer.
5. The entire solid lithium secondary battery according to claim 1 , wherein
the Li (i-x) NbO 3 crystal is oriented along a [110] direction or along a [100] direction with respect to a normal line of a main surface of the solid electrolyte layer, on which one of the cathode and the anode is disposed.