Patent ID: 8753780
Filing Date: 2014-06-17
Classification: H01M,Y02E,Y02T,Y10T

Abstract:
1. An electrode comprising: a metal collector; a barrier layer, containing a first conductive powder and a second conductive powder as a conductive material and a water-insoluble polymer material, provided on a surface of the metal collector; and an active material layer, including a lithium-transition metal oxide capable of reversibly storing and releasing lithium ions as a principal component, formed by applying an aqueous active material composition to the barrier layer formed on the collector, wherein an average particle diameter of the second conductive powder is greater than an average particle diameter of the first conductive powder, the mass content of the first conductive powder in the barrier layer is greater than the mass content of the second conductive powder, and the barrier layer is configured to block direct contact between the aqueous active material composition and the collector.