摘要 |
An electrode assembly for a secondary battery comprising an adiabatic layer attached to the negative electrode layer is disclosed. The electrode assembly comprises a positive electrode layer having a positive electrode collector, a positive electrode coating, and a non-coated area on the positive electrode collector. The negative electrode layer has a negative electrode collector, a negative electrode coating, and a non-coated area on the negative electrode collector. A separator insulates the positive and negative electrode layers. Positive and negative electrode tabs are attached to the non-coated areas of the positive and negative electrode collectors. The negative electrode layer has an adiabatic layer attached to the surface of a non-coated area of the negative electrode collector that is opposite the surface to which the negative electrode tab is attached. This construction improves battery stability and prevents short circuits caused either by heat generated during overcharging or by an internal short circuit.
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