Negative electrode material, negative electrode comprising same and preparation method of negative electrode

Negative electrode material, negative electrode comprising same and preparation method of negative electrode

  • CN 110,828,812 A
  • Filed: 10/29/2019
  • Published: 02/21/2020
  • Est. Priority Date: 10/29/2019
  • Status: Active Application
First Claim
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1. An anode material, comprising:

  • a material containing silicon, wherein the silicon-containing material,wherein a battery comprising a negative electrode made of the negative electrode material as a working electrode, metallic lithium as a counter electrode, and an electrolyte containing a lithium ion conductive substance is charged and discharged, and when a graph of a differential value dQ/dV obtained by differentiating a charge and discharge capacity Q by a working electrode potential V and the working electrode potential V is plotted, a ratio B/A of a maximum value B of the differential value dQ/dV between 0.4V and 0.55V to a maximum value A of the differential value dQ/dV between 0.2V and 0.35V is 1.0 to 3.0 when the negative electrode material is electrified in a lithium-removing direction.

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