Multilayer separator and device using the same
AssigneeNingde Amperex Technology Limited
InventorDongYang Guo
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Abstract
The present application relates to a multilayer separator and a device using the same. Specifically, the present application provides a multilayer separator comprising at least one first porous substrate and at least one second porous substrate, wherein the peeling strength between the first porous substrate and the second porous substrate is in a range of 2 N/m to 50 N/m, and the first porous substrate has an obturator temperature of lower than 135° C. The multilayer separator provided by the present application can effectively guarantee the safety and electrochemical performance of the electrochemical device.
Claims15
A multilayer separator, comprising:
- at least one first porous substrate;
- and
- at least one second porous substrate,
- wherein the peeling strength between the first porous substrate and the second porous substrate is in a range of 2 N/m to 30 N/m, and the first porous substrate has an obturator temperature of lower than 135° C.;
- and
- wherein the multilayer separator has an air permeability of 50 s/100 cc to 1000 s/100 cc, and wherein the air permeability of the first porous substrate is 30% to 80% of the air permeability of the multilayer separator, and the air permeability of the second porous substrate is 20% to 70% of the air permeability of the multilayer separator.
An electrochemical device, comprising:
- a cathode;
- an anode;
- and
- a multilayer separator located between the cathode and the anode, wherein the multilayer separator comprises:
- at least one first porous substrate;
- and
- at least one second porous substrate,
- wherein the peeling strength between the first porous substrate and the second porous substrate is in a range of 2 N/m to 30 N/m, and the first porous substrate has an obturator temperature of lower than 135° C.;
- and
- wherein the multilayer separator has an air permeability of 50 s/100 cc to 1000 s/100 cc, and wherein the air permeability of the first porous substrate is 30% to 80% of the air permeability of the multilayer separator, and the air permeability of the second porous substrate is 20% to 70% of the air permeability of the multilayer separator.
An electronic device, comprising an electrochemical device that includes:
- a cathode;
- an anode;
- and
- a multilayer separator located between the cathode and the anode, wherein the multilayer separator comprises:
- at least one first porous substrate;
- and
- at least one second porous substrate,
- wherein the peeling strength between the first porous substrate and the second porous substrate is in a range of 2 N/m to 30 N/m, and the first porous substrate has an obturator temperature of lower than 135° C.;
- and
- wherein the multilayer separator has an air permeability of 50 s/100 cc to 1000 s/100 cc, and wherein the air permeability of the first porous substrate is 30% to 80% of the air permeability of the multilayer separator, and the air permeability of the second porous substrate is 20% to 70% of the air permeability of the multilayer separator.
Dependencies are inferred from the claim text.