Secondary battery-use anode active material, secondary battery-use anode, secondary battery, battery pack, electric vehicle, electric power storage system, electric power tool, and electronic apparatus

  • US 11,063,251 B2
  • Filed: 06/23/2015
  • Issued: 07/13/2021
  • Est. Priority Date: 07/18/2014
  • Status: Active Grant
First Claim
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1. A secondary battery-use anode active material, comprising a surface that is only partially covered with one or a plurality of melted coatings comprising one or both of polyvinylidene fluoride and a copolymer of polyvinylidene fluoride,wherein the anode active material consists essentially of a carbon material and a metal-based material,wherein the metal-based material is selected from the group consisting of tin (Sn), LiSnO, Mg2Sn, SnOw (0<

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    2), SnSiO3, and combinations thereof.

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