Anode active material and metal ion battery prepared therewith

摘要

A main object of the present invention is to provide an anode active material capable of increasing energy density at the same time increasing battery safety, and a metal ion battery prepared with the anode active material. The present invention is an anode active material including an element that belongs to alunite group capable to insert and remove an ion(s) of at least one metal element selected from the group consisting of alkali metal elements and alkaline-earth metal elements, and a metal ion battery having a cathode, an anode, and an electrolyte filled between the cathode and the anode, the electrolyte conducting a metal ion(s), wherein the anode active material is contained in the anode.

主权项

1. A metal ion battery comprising a cathode, an anode, and an electrolyte filled between the cathode and the anode, the electrolyte conducting a metal ion(s), wherein the anode contains at least one anode active material selected from the group consisting of NaAl3.0(SO4)2.2(OH)5.6.0.30H2O, NaAl1.1Fe1.6(SO4)2(OH)5.1.0.12H2O, natrojarosite and KFe3(SO4)2(OH)6.