Nonaqueous electrolyte lithium secondary cell

A nonaqueous electrolyte lithium secondary cell comprising a nonaqueous electrolyte containing a lithium salt, a positive electrode, a negative electrode and a separator wherein;

• a material which contains a room temperature molten salt as a main component and is in liquid-state, is provided as the nonaqueous electrolyte, and a material which contains a room temperature molten salt as a main component and is in solid-state by combining a polymer, is provided as the nonaqueous electrolyte,
• the negative electrode contains a negative active material wherein a working potential of the negative electrode is nobler by above 1V than a potential of a metallic lithium,
• the positive electrode contains a positive active material wherein a working potential of the positive electrode is nobler by above 4.5V than a potential of the metallic lithium, wherein the main component of the positive active material comprises a burnt oxide having the spinel type structure expressed by Lim[Ni2−nMnO4] (M is a transition metal of one or more kinds and an element other than Ni, 0≦m≦1.1, 0.75≦n≦1.80),
• the foregoing liquid-state nonaqueous electrolyte is contained in the positive electrode and the negative electrode, and
• the foregoing solid-state nonaqueous electrolyte is contained in the separator.

A nonaqueous electrolyte lithium secondary cell comprising a nonaqueous electrolyte containing a lithium salt, a positive electrode, a negative electrode and a separator characterized by that;

• a material which contains a room temperature molten salt as a main component and is in liquid-state, is provided as the nonaqueous electrolyte, and a material which contains a room temperature molten salt as a main component and is in solid-state by combining a polymer, is provided as the nonaqueous electrolyte,
• the negative electrode contains a negative active material wherein a working potential of the negative electrode is nobler by above 1V than a potential of a metallic lithium, wherein the main component of the negative active material comprises a burnt oxide having a spinel type structure expressed by LixTi5/3−yLyO4 (L is an element belonging to 2 to 16 groups of one or more kinds, and an element other than Ti and O, 4/3<x<7/3, 0<y<5/3),
• the foregoing liquid-state nonaqueous electrolyte is contained in the positive electrode and the negative electrode, and
• the foregoing solid-state nonaqueous electrolyte is contained in the separator.

A nonaqueous electrolyte lithium secondary cell comprising a nonaqueous electrolyte containing a lithium salt, a positive electrode, a negative electrode and a separator wherein,

• a material which contains a room temperature molten salt as a main component and is in liquid-state, is provided as the nonaqueous electrolyte,
• the negative electrode contains a negative active material wherein a working potential of the negative electrode is nobler by above 1V than a potential of a metallic lithium, wherein the main component of the negative active material comprises a burnt oxide having a spinel type structure expressed by LixTi5/3−yLyO4 (L is an element belonging to 2 to 16 groups of one or more kinds, and an element other than Ti and O, 4/3<x<7/3, 0<y<5/3),
• the positive electrode contains a positive active material wherein a working potential of the positive electrode is nobler by above 4.5V than a potential of the metallic lithium, wherein the main component of the positive active material comprises a burnt oxide having the spinel type structure expressed by Lim[Ni2−nMnO4] (M is a transition metal of one or more kinds and an element other than Ni, 0≦m≦1.1, 0.75≦n≦1.80), and
• the foregoing liquid-state nonaqueous electrolyte is contained in the positive electrode, the negative electrode and the separator.

A nonaqueous electrolyte lithium secondary cell comprising a nonaqueous electrolyte containing a lithium salt, a positive electrode, a negative electrode and a separator wherein;

• a material which contains a room temperature molten salt as a main component and is in liquid-state, is provided as the nonaqueous electrolyte, and a material which contains a room temperature molten salt as a main component and is in solid-state by combining a polymer, is provided as the nonaqueous electrolyte,
• the negative electrode contains a negative active material wherein a working potential of the negative electrode is nobler by above 1V than a potential of a metallic lithium, wherein the main component of the negative active material comprises a burnt oxide having a spinel type structure expressed by LixTi5/3−yLyO4 (L is an element belonging to 2 to 16 groups of one or more kinds, and an element other than Ti and O, 4/3<x<7/3, 0<y<5/3),
• the positive electrode contains a positive active material wherein a working potential of the positive electrode is nobler by above 4.5V than a potential of the metallic lithium, wherein the main component of the positive active material comprises a burnt oxide having the spinel type structure expressed by Lim[Ni2−nMnO4] (M is a transition metal of one or more kinds and an element other than Ni, 0≦m≦1.1, 0.75≦n≦1.80),
• the foregoing liquid-state nonaqueous electrolyte is contained in the positive electrode and the negative electrode, and
• the foregoing solid-state nonaqueous electrolyte is contained in the separator.