Electrode plate and lithium-ion battery
Provided are an electrode plate and a lithium-ion battery, the electrode plate includes a current collector layer, a semiconductor layer and an alkali metal replenishing layer. The semiconductor layer is disposed on at least one surface of the current collector layer. The alkali metal replenishing layer is a lithium-replenishing agent layer or a sodium-replenishing agent layer. The alkali metal replenishing layer is arranged on a side of the semiconductor layer far away from the current collector layer.
1 . An electrode plate, comprising:
a current collector layer;
a semiconductor layer, wherein the semiconductor layer is disposed on at least one surface of the current collector layer; and
an alkali metal replenishing layer, wherein the alkali metal replenishing layer is a lithium-replenishing agent layer or a sodium-replenishing agent layer, and the alkali metal replenishing layer is arranged on a surface of the semiconductor layer opposed to the surface of the semiconductor that is in contact with the current collector layer,
wherein the semiconductor layer is a thermo-sensitive semiconductor obtained from one or a plurality of oxides selected from ZnO, CuO, NiO, Al 2 O 3 , Fe 2 O 3 , Mn 3 O 4 , and Co 3 O 4 ,
wherein the semiconductor layer exhibits a higher electrical resistance at a lower temperature than at a higher temperature.
2 . The electrode plate according to claim 1 , wherein the alkali metal replenishing layer has a thickness of between 50 μm to 300 μm.
3 . The electrode plate according to claim 1 , wherein the alkali metal replenishing layer is the lithium-replenishing agent layer, and the lithium-replenishing agent layer is a negative electrode lithium-replenishing agent layer.
4 . The electrode plate according to claim 3 , wherein the negative electrode lithium-replenishing agent layer comprises at least one of metal lithium, lithium silicon alloy, lithium aluminum alloy, lithium boron alloy and lithium magnesium alloy.
5 . The electrode plate according to claim 1 , wherein the alkali metal replenishing layer is the lithium-replenishing agent layer, and the lithium-replenishing agent layer is a positive electrode lithium-replenishing agent layer.
6 . The electrode plate according to claim 5 , wherein the positive electrode lithium-replenishing agent layer comprises at least one of lithium oxide, lithium ferrite, lithium cobaltate and lithium nickel oxide.
7 . The electrode plate according to claim 1 , wherein the semiconductor layer has a surface resistance of between 10 −3 mΩ·m 2 to 10 5 mΩ·m 2 .
8 . The electrode plate according to claim 7 , wherein the semiconductor layer has a thickness of between 100 nm to 500 nm.
9 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 1 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
10 . The lithium-ion battery according to claim 9 , the electrode plate is a negative electrode lithium-replenishing electrode plate, the electrode plate comprises a lithium-replenishing tab extending from the current collector layer, the negative electrode plate comprises a negative tab, and the lithium-replenishing tab is connected with the negative tab.
11 . The lithium-ion battery according to claim 9 , the electrode plate is a positive electrode lithium-replenishing electrode plate, the electrode plate comprises a lithium-replenishing tab extending from the current collector layer, the positive electrode plate comprises a positive tab, and the lithium-replenishing tab is connected with the positive tab.
12 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 2 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
13 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 3 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
14 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 4 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
15 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 5 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
16 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 6 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
17 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 7 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
18 . A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and at least one electrode plate according to claim 8 , wherein the alkali metal replenishing layer is a lithium-replenishing agent layer; and
the positive electrode plate and the negative electrode plate are separated from each other by a separator, and the at least one electrode plate is separated from the positive electrode plate and/or the negative electrode plate by the separator.
19 . The lithium-ion battery according to claim 18 , the electrode plate is a negative electrode lithium-replenishing electrode plate, the electrode plate comprises a lithium-replenishing tab extending from the current collector layer, the negative electrode plate comprises a negative tab, and the lithium-replenishing tab is connected with the negative tab.
20 . The lithium-ion battery according to claim 18 , the electrode plate is a positive electrode lithium-replenishing electrode plate, the electrode plate comprises a lithium-replenishing tab extending from the current collector layer, the positive electrode plate comprises a positive tab, and the lithium-replenishing tab is connected with the positive tab.