Electrode assembly including electrode units having the same length and different widths, and battery cell and device including the electrode assembly

摘要

There are provided an electrode assembly, a battery cell including the electrode assembly, and a device including the electrode assembly. The electrode assembly includes a combination of two or more electrode units having the same length and different widths, wherein the electrode units are stacked so that a stepped portion is formed between the electrode units, and electrodes having different polarities face each other at an interface between the electrode units.

主权项

1. An electrode assembly comprising a combination of two or more electrode units having the same length and different widths,
wherein the electrode units are stacked so that a stepped portion is formed between the electrode units, a positive electrode and a negative electrode face each other at an interface between the electrode units, and the electrode assembly satisfies Formula 1-1:
1≦Nn/Pn≦Nn/Pn+1   Formula 1-1: where n denotes an integer equal to or greater than 1, Nn denotes reversible capacity per unit area of a negative electrode of the nth widest electrode unit, Pn denotes reversible capacity per unit area of a positive electrode of the nth widest electrode unit, and Pn+1 denotes reversible capacity per unit area of a positive electrode of the (n+1)th widest electrode unit.