CPC H01M 4/525 (2013.01) [H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/364 (2013.01); H01M 4/667 (2013.01); H01M 10/058 (2013.01)] | 5 Claims |
1. A sodium secondary battery, comprising:
an anode having an anode electrode active material comprising nickel cobalt molybdenum oxide represented by Chemical Formula 1,
wherein the nickel cobalt molybdenum oxide is comprised of a single phase of Chemical Formula 1 and is in the form of a nanorod:
NixCo1-xMoO4 [Chemical Formula 1]
wherein x satisfies 0.45<x<0.55;
a cathode; and
an electrolytic solution,
wherein the anode electrode active material comprising the nickel cobalt molybdenum oxide is capable of intercalation and deintercalation of sodium ions.
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3. An anode electrode active material for a sodium secondary battery, comprising the nickel cobalt molybdenum oxide prepared by a method comprising:
a step of preparing a precursor mixture by dissolving a nickel precursor, a cobalt precursor and a molybdenum precursor in a solvent (step 1);
a step of conducting hydrothermal reaction of the precursor mixture of the step 1 as a reactant (step 2), wherein the hydrothermal reaction is performed at a temperature of 130-180° C. for 4-9 hours and at a pressure of 0.4-0.6 MPa; and
a step of heat-treating the product of the step 2 (step 3), wherein the heat treatment is performed with a heating rate of 1-10° C./min at a temperature of 300-500° C. for 3-5 hours,
wherein the nickel cobalt molybdenum oxide is comprised of a single phase of Chemical Formula 1 and is in the form of a nanorod:
NixCo1-xMoO4 [Chemical Formula 1]
wherein x satisfies 0.45<x<0.55.
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