Electrode active material for magnesium battery
AssigneeSamsung Electronics Co., Ltd.
InventorsJusik KIM, Seoksoo LEE, Ryounghee KIM, Wonseok CHANG
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Abstract
Provided are an electrode active material for a magnesium battery, including a complex transition metal oxide which is represented by a Formula 1 below and which includes λ-MnO2 phase having a cubic structure at a percentage of 60% or higher, an electrode and a magnesium battery including the same, and a method of preparing the electrode active material for a magnesium battery: <Formula 1> MxMnyOz In the Formula 1, 0<x≦1, 0.25≦y≦1, and 1≦z<3; and M is at least one metal selected from Mg2+, Ca2+, Na+, K+, and Zn2+.
Claims21
An electrode active material for a magnesium battery, the electrode active material comprising a complex transition metal oxide which is represented by a Formula 1 below and which includes λ-MnO2 phase having a cubic structure at a percentage of 60% or higher:
- MxMnyOz <Formula 1>
- In the Formula 1,
- 0<x≦1, 0.25≦y≦1, and 1≦z<3;
- and
- M is at least one metal selected from Mg2+, Ca2+, Na+, K+, and Zn2+.
A method of preparing an electrode active material for a magnesium battery, the method comprising
- obtaining a complex transition metal oxide having a spinel structure by a solid phase method or a liquid phase method;
- and
- preparing a complex transition metal oxide which is represented by a Formula 1 below and which includes λ-MnO2 phase having a cubic structure at a percentage of 60% or higher by treating with an acid the complex transition metal oxide having a spinel structure:
- MxMnyOz <Formula 1>
- In the Formula 1,
- 0<x≦1, 0.25≦y≦1, and 1≦z<3;
- and
- M is at least one metal selected from Mg2+, Ca2+, Na+, K+, and Zn2+.
Dependencies are inferred from the claim text.