CPC H01M 4/667 (2013.01) [H01M 4/0404 (2013.01); H01M 50/46 (2021.01); H01M 2004/028 (2013.01)] | 14 Claims |
1. A positive electrode current collector, comprising an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, wherein the aluminum-based conductive layer contains aluminum (Al) and at least one modifying element selected from the group consisting of oxygen (O), nitrogen (N), fluorine (F), boron (B), sulfur (S), and phosphorus (P), wherein an X-ray photoelectron spectroscopy (XPS) spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak in a range of 70 eV to 73.5 eV and a second peak in a range of 73.5 eV to 78 eV, wherein a ratio x of peak intensity of the second peak to that of the first peak satisfies 0<x≤3.0.
|