Anode active material, a sodium ion secondary battery including an anode active material, and an electric device including the secondary battery
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-004/525
H01M-010/054
H01M-004/131
H01M-004/1391
C01G-051/04
H01M-004/02
출원번호
16268891
(2019-02-06)
등록번호
10818922
(2020-10-27)
우선권정보
KR-10-2018-0042222 (2018-04-11)
발명자
/ 주소
Chung, Kyung Yoon
Jung, Hun-Gi
Kim, Ji-Young
Ali, Ghulam
Islam, Mobinul
Kim, Sang Ok
Kim, Hyungseok
출원인 / 주소
Korea Institute of Science and Technology
대리인 / 주소
Rabin & Berdo, P.C.
인용정보
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초록▼
An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel o
An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. The sodium ion secondary battery includes an anode made of an anode active material composed of a cobalt tin spinel oxide represented by Chemical Formula 1 below: Co2+xSn1-xO4, Chemical Formula 1where x is a real number satisfying 0≤x≤0.9;an electrolyte; and a cathode. The sodium ion secondary battery has high capacity characteristics. The electric device including the sodium ion secondary battery includes an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and an electric power storage system.
대표청구항▼
1. An anode active material for a sodium ion secondary battery, comprising: a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. 2. The anode active material for a sodium ion secondary battery according to claim 1, wherein the cobalt tin spinel oxide belongs to space group Fd-3m, has a lattice con
1. An anode active material for a sodium ion secondary battery, comprising: a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. 2. The anode active material for a sodium ion secondary battery according to claim 1, wherein the cobalt tin spinel oxide belongs to space group Fd-3m, has a lattice constant (a) ranging from 8.08985-8.089951, and has a space group volume ranging from 529.450-529.460 Å3. 3. The anode active material for a sodium ion secondary battery according to claim 1, wherein the cobalt tin spinel oxide comprises nanoparticles having a particle size ranging from 5 nm to 100 nm and having an agglomerated rod shape that has a length ranging from 1 μm to 10 μm and a thickness ranging from 50 nm to 200 nm. 4. The anode active material for a sodium ion secondary battery according to claim 1, wherein after carrying out X-ray photoelectron spectrometry (XPS) analysis of the cobalt tin spinel oxide, a first XPS effective peak, a second XPS effective peak, a third XPS effective peak, a fourth XPS effective peak and a fifth XPS effective peak appear at a binding energy range of 777-781 eV, 778-784 eV, 484-489 eV, 528-531 eV, and 528-535 eV, respectively. 5. The anode active material for a sodium ion secondary battery according to claim 1, wherein the cobalt tin spinel oxide belongs to the space group Fd-3m, has a lattice constant, a, ranging from 8.08985-8.08995, has a space group volume of 529.450-529.460 Å3, comprises nanoparticles having a size ranging from 5 nm to 100 nm and an agglomerated rod shape that has a length ranging from 1 μm to 10 μm and a thickness ranging from 50 nm to 200 nm, and wherein, after carrying out XPS analysis of the cobalt tin spinel oxide, the cobalt tin spinel oxide shows a first XPS effective peak, a second XPS effective peak, a third XPS effective peak, a fourth XPS effective peak and a fifth XPS effective peak appear at a binding energy range of 777-781 eV, 778-784 eV, 484-489 eV, 528-531 eV, and 528-535 eV, respectively. 6. A sodium ion secondary battery, comprising: an anode that comprises an anode active material comprising a cobalt tin spinel oxide represented by Chemical Formula 1 below: Co2+xSn1-xO4, Chemical Formula 1where x is a real number satisfying 0≤x≤0.9;an electrolyte; anda cathode. 7. The sodium ion secondary battery according to claim 6, wherein the cathode comprises Na3Ni2BiO6. 8. An electric device comprising the sodium ion secondary battery as defined in claim 6, wherein the electric device is selected from the group consisting of an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and an electric power storage system.
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