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1. WO2020116913 - F-DOPED CARBON AIR ELECTRODE AND METHOD FOR MANUFACTURING LITHIUM-AIR BATTERY USING SAME

Publication Number WO/2020/116913
Publication Date 11.06.2020
International Application No. PCT/KR2019/016962
International Filing Date 03.12.2019
IPC
H01M 12/08 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
12Hybrid cells; Manufacture thereof
08composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
H01M 4/96 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
96Carbon-based electrodes
Applicants
  • 목포대학교산학협력단 MOKPO NATIONAL UNIVERSITY INDUSTRY-ACADEMIA COOPERATION GROUP [KR]/[KR]
Inventors
  • 강정원 KANG, Jungwon
Agents
  • 윤춘주 YOON, Choonjoo
Priority Data
10-2018-015419604.12.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) F-DOPED CARBON AIR ELECTRODE AND METHOD FOR MANUFACTURING LITHIUM-AIR BATTERY USING SAME
(FR) ÉLECTRODE À AIR EN CARBONE DOPÉE F ET PROCÉDÉ DE FABRICATION D'UN ACCUMULATEUR LITHIUM-AIR L'UTILISANT
(KO) F-도핑 카본 공기극 및 이를 이용한 리튬-공기전지 제조 방법
Abstract
(EN)
The present invention comprises: a step for manufacturing a cell using carbon paper as a cathode material, lithium metal as an anode, a separator therebetween, and an electrolyte containing a LiTFSI salt; and an F-doping step for doping the carbon paper with fluorine using a reduction reaction of LiTFSI, which is generated during discharging, in an inert atmosphere. According to the above technical feature, by generating a transfer path of oxygen ions on the surface of carbon through F-doping using an electrochemical reduction method and providing an additionally generated carboxyl group as a Li2O2 -producing site, there is an effect of manufacturing of a high-output and high-capacity lithium-air battery in which F-doped P50 exhibits a capacity per area of 30,000 µAh/cm2 or more, and Sp exhibits a capacity per weight of 200,000 mAh/g.
(FR)
La présente invention comprend: une étape de fabrication d'un élément utilisant du papier carbone en tant que matériau de cathode, du lithium métallique en tant qu'anode, un séparateur disposés entre ceux-ci, et un électrolyte contenant un sel de LiTFSI; et une étape de dopage F pour doper le papier de carbone avec du fluor au moyen d'une réaction de réduction de LiTFSI, qui est générée pendant la décharge, dans une atmosphère inerte. Selon la caractéristique technique ci-dessus, en générant un trajet de transfert d'ions oxygène sur la surface en carbone au moyen du dopage F à l'aide d'un procédé de réduction électrochimique et en fournissant un groupe carboxyle généré de façon supplémentaire en tant que site de production de Li2O2 , on obtient pour effet la fabrication d'un accumulateur lithium-air à haut rendement et à capacité élevée dans lequel le P50 dopé au F présente une capacité par surface de 30 000 µAh/cm2 ou plus, et Sp présente une capacité par masse de 200 000 mAh/g.
(KO)
본 발명은 양극 소재로 카본 페이퍼, 음극으로 리튬금속 및 그 사이에 분리막과 LiTFSI 염을 포함하는 전해질로 하여 셀을 제조하는 단계; 불활성 대기 하에서 방전시 발생하는 LiTFSI의 환원반응을 이용하여 상기 카본 페이퍼에 플루오르를 도핑하는 F-도핑 단계를 포함한다. 상기의 기술적 구성에 따르면, 전기화학적 환원법으로 F-도핑을 하여 카본 표면에 산소 이온의 이동 경로를 생성하고, 부가적으로 생성된 카르복실 그룹으로 하여 Li2O2 생성 사이트를 제공하여 F-도핑된 P50은 면적당 용량 30,000 ㎂h/cm2 이상, Sp는 중량당 용량 200,000 mAh/g을 육박하는 등 고출력, 고용량의 리튬-공기전지를 제조할 수 있다는 효과가 있다.
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