US 11,949,103 B2
Anode electrode active material for sodium secondary battery comprising nickel cobalt molybdenum oxide, anode electrode for sodium secondary battery comprising same, sodium secondary battery including anode electrode for sodium secondary battery, and method for manufacturing same
Kyung Yoon Chung, Seoul (KR); Kyung-Wan Nam, Seoul (KR); Jaeho Park, Seoul (KR); and Daniel Adjah Anang, Kumasi (GH)
Assigned to Korea Institute of Science and Technology, Seoul (KR); and Dongguk University Industry—Academic Cooperation Foundation, Seoul (KR)
Filed by KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR); and Dongguk University Industry—Academic Cooperation Foundation, Seoul (KR)
Filed on Dec. 29, 2022, as Appl. No. 18/091,233.
Application 18/091,233 is a continuation of application No. 16/990,025, filed on Aug. 11, 2020, granted, now 11,575,131.
Claims priority of application No. 10-2019-0100876 (KR), filed on Aug. 19, 2019.
Prior Publication US 2023/0146801 A1, May 11, 2023
Int. Cl. H01M 4/525 (2010.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/36 (2006.01); H01M 4/66 (2006.01); H01M 10/058 (2010.01)
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.
 
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.