Titles:
METHOD OF PRODUCING IRON PHOSPHIDE, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY COMPRISING IRON PHOSPHIDE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
인화철의 제조방법, 인화철을 포함하는 리튬 이차전지용 양극 및 이를 구비한 리튬 이차전지
Abstracts:
The present invention relates to a method of producing iron phosphide (FeP), a positive electrode for a lithium secondary battery, comprising the iron phosphide (FeP) produced thereby, and a lithium secondary battery comprising same. When the iron phosphide (FeP) is applied to a lithium secondary battery, the iron phosphide (FeP) adsorbs to lithium polysulfide (LiPS) produced during charging/discharging of the lithium secondary battery, thus increasing the charging/discharging efficiency and improving lifetime characteristics of the battery.
본 발명은, 인화철(FeP)의 제조방법, 이에 의해 제조되는 인화철(FeP)을 포함하는 리튬 이차전지의 양극 및 이를 포함하는 리튬 이차전지에 관한 것이다. 인화철(FeP)을 적용한 양극을 포함하는 리튬 이차전지의 경우, 상기 인화철(FeP)이 리튬 이차전지의 충방전 과정에서 생성되는 리튬 폴리설파이드(LiPS)를 흡착하여, 전지의 충방전 효율을 증가시키고 수명 특성을 향상시키는 효과가 있다.
Applicant:
LG CHEMICAL LTD [KR] (주식회사 엘지화학)
Inventors:
HAN SUENGHOON [KR] (한승훈)
MOON JUNGMI [KR] (문정미)
SOHN KWONNAM [KR] (손권남)
YANG DOO KYUNG [KR] (양두경)
Titles:
LITHIUM/SULFUR BATTERY WITH INCREASED CAPACITY AND ASSOCIATED PRODUCTION PROCESS
BATTERIE LITHIUM/SOUFRE À CAPACITÉ AUGMENTÉE ET PROCÉDÉ DE FABRICATION ASSOCIÉ
Abstracts:
The invention relates to a battery comprising an anode, a separator, a cathode comprising a composite material based on sulfur and on carbon-containing material, and a catholyte comprising at least one organosulfur species contributing to the capacity of the cathode. The invention also relates to a process for producing such a battery.
L'invention porte sur une batterie comprenant une anode, un séparateur, une cathode comprenant un matériau composite à base de soufre et de matériau carboné, et un catholyte comportant au moins une espèce organosoufrée participant à la capacité de la cathode ainsi que sur un procédé de fabrication d'une telle batterie.
A novel lithium-sulfur solid state battery capable of charging and discharging even when used in an environment of 100 to 160 ° C. SOLUTION: A sulfur positive electrode 13, a solid electrolyte 15, a lithium negative electrode 16, a positive electrode current collector 12, and a sulfur positive electrode 13 are enclosed between the positive electrode current collector 12 and the solid electrolyte 15. A lithium-sulfur solid state battery 10 having an endless sealing material 14 arranged in the above manner is provided. [Selection] Figure 1
Titles:
ALKALI AND/OR ALKALINE EARTH ION - MONOCLINIC SULFUR ALLOTROPE BATTERY WITH SELF-SUPPORTING ELECTRODES
ALKALI- UND/ODER ERDALKALI-IONEN MONOKLINE SCHWEFEL-ALLOTROPE BATTERIE MIT SELBSTTRAGENDEN ELEKTRODEN
Abstract:
The present invention provides an alkali- and/or alkaline earth-ion - sulfur battery comprisingat least one cathode containing:- a cathode current collector foil;- optionally a conductive adhesive interlayer;- a primary cathode mass layer, containing a conductive dimensionally stable porous host structure, sulfur as an active material, whereas preferably at least 20 % of the sulfur present is monoclinic sulfur allotrope, and optionally conductive additives, binders and pore-forming additives;- a secondary cathode mass layer, containing sulfur and alkali-ion- and/or alkaline earth-ion-intercalating material;- optionally a layer, containing graphene oxide and/or reduced graphene oxide, heteroatom Group VIIa and/or Group Va elements co-doped graphene, and a Group VIIa and/or Group Va heteroatom-containing polymer;and/orat least one anode containing- an anode current collector foil;- optionally a conductive adhesive interlayer;- a primary anode mass layer, containing a conductive dimensionally stable porous host structure, a metal capable of forming intermetallic alloys with an alkali metal and/or an alkaline earth metal, and optionally conductive additives, binders and pore-forming additives;- optionally a secondary anode mass layer, containing graphene oxide and/or reduced graphene oxide, heteroatom Group VIa elements co-doped graphene, and a polymer, preferably an elastomeric polymer;- an alkali metal and/or an alkaline earth metal, preferably in the form of foil or powder.andat least one separator.The resulting cells offer a wide range of economic and ecological advantages over the currently available cells, as well as allowing versatility of materials and production processes.
Applicants:
BRNO UNIV OF TECHNOLOGY [CZ]
GRAPHENE BATTERIES AS [NO]
Inventors:
SEDLARIKOVA MARIE [CZ]
KAZDA TOMAS [CZ]
SLAVIK MAREK [SK]
STRAKOVA FEDORKOVA ANDREA [SK]
Other family members:
WO 2019201876 A1,
Pub. Date: 2019-10-24,
EPO Reference
Titles:
LITHIUM/SULFUR ELECTROCHEMICAL ELEMENT
ÉLÉMENT ÉLECTROCHIMIQUE DE TYPE LITHIUM/SOUFRE
Abstracts:
The invention relates to a lithium/sulfur electrochemical element (1) comprising: - a cathode (2) comprising: i) carbon having a porous structure (5) comprising pores with a mean diameter less than or equal to 6 nm; ii) sulfur having a degree of oxidation between 0 and -2 in the pores of the carbon; b) an electrolyte comprising: i) at least one organic solvent which is a carbonate; ii) one or more salts, at least one salt being lithium bis(fluorosulfonyl)imide; c) an anode (4) comprising lithium metal or a metallic alloy of lithium. Such an element provides increased safety of use because it limits the quantity of hydrogen sulfide that can be emitted in the event of an electrolyte leak or in the event of exposure of an electrode of the element to water.
Lin élément électrochimique (1) de type lithium/soufre comprenant : - une cathode (2) comprenant : i) du carbone présentant une structure poreuse (5) comprenant des pores avec un diamètre moyen inférieur ou égal à 6 nm; ii) du soufre avec un degré d'oxydation pouvant aller de 0 à -2 dans les pores du carbone; b) un électrolyte comprenant : i) au moins un solvant organique qui est un carbonate; ii) un ou plusieurs sels, au moins un sel étant du bis(fluorosulfonyl)imide de lithium; c) une anode (4) comprenant du lithium métal ou un alliage métallique de lithium. Un tel élément offre une sécurité d'utilisation accrue car il limite la quantité de sulfure d'hydrogène susceptible d'être émise en cas de fuite d'électrolyte ou en cas d'exposition d'une électrode de l'élément à de l'eau.
Applicant:
ACCUMULATEURS FIXES [FR]
Inventors:
FISCHER FLORENT [FR]
HEZEQUE THIERRY [FR]
JORDY CHRISTIAN [FR]
Titles:
Electrolyte for high temperature and high pressure resistant sulfur lithium battery and preparation method thereof
一种耐高温高压的硫锂电池用电解液及其制备方法
Abstracts:
The invention discloses an electrolyte for high temperature and high pressure resistant sulfur lithium battery and a preparation method thereof, and belongs to the field of preparation of sulfur lithium battery equipment. The method comprises the steps of: placing the lithium salt in a vacuum drying oven to dry; then dissolving the dried lithium salt in a solvent under the protection of an inert gas to obtain a base electrolyte; finally, in an inert gas, the electrolyte additive A and the electrolyte additive B is added to the base electrolyte. The invention adds the o-(diethyl)aminoacyloxysilane or the di(diethyl)aminooxysilane electrolyte additive A to the existing electrolyte, and absorbs the water molecules present in the electrolyte. The thermal decomposition of the electrolyte is prevented, and on the other hand, the Si group reacts with the HF, thereby causing less "dead sulfur" on the surface of the positive electrode. The invention solves the problem that the existing sulfur lithium battery under the high temperature and high pressure causes the battery impedance to increase and impairs the performance of the battery.
Titles:
Lithium-sulfur battery cathode material and preparation method thereof
一种锂硫电池正极材料及其制备方法
Abstracts:
The invention discloses a lithium sulfur battery cathode material, which comprises the following raw materials in parts by weight: sulfur 75-85, conductive graphite 1-5, conductive agent solution 250-300, adhesive 8-15, the invention can be It can alleviate the problem of sulfur volume expansion during charging and discharging, and physically limit the dissolution and shuttle of polysulfide, thereby effectively improving the specific capacity, rate performance and cycle stability of lithium-sulfur batteries.
Titles:
Method for producing lithium-sulfur solid state battery
リチウム硫黄固体電池の製造方法
Abstracts:
A method for producing a new lithium-sulfur solid state battery is provided. A method for producing a lithium-sulfur solid battery 1 comprising a sulfur positive electrode 11, a lithium negative electrode 12, and a solid electrolyte 13, wherein the solid electrolyte 13 is disposed between the sulfur positive electrode 11 and the lithium negative electrode 12. The sulfur positive electrode 11 has a conductive sheet having a large number of voids, the voids open to the outside of the conductive sheet, and the sulfur positive electrode 11 contains sulfur in the voids. And the manufacturing method of the lithium sulfur solid battery 1 which has the process of producing the sulfur positive electrode 11 by making a conductive sheet impregnate the melted sulfur or sulfur solution. [Selection] Figure 1
Titles:
Phosphate modified diaphragm for lithium sulfur battery and preparation and coating method thereof
一种锂硫电池用的磷酸盐改性隔膜及其制备、涂布方法
Abstracts:
The invention discloses a phosphate-modified membrane for a lithium-sulfur battery and a preparation and coating method thereof, and belongs to the technical field of batteries. The preparation process of the cobalt cobalt nickel carbon compound is: dissolving the metal inorganic salt in deionized water, adding a conductive agent, phosphoric acid or ammonium dihydrogen phosphate, stirring, adding ammonia water or ethanolamine to adjust the pH 7, stirring the reaction for 1 to 5 hours, and quenching. After 5~20h, filter and wash with deionized water. The filter cake is dried at 100-150 ° C, then placed in an atmosphere furnace and calcined at 250-550 ° C for 3-8 h under nitrogen protection. After cooling, the cobalt cobalt nickel carbon composite is pulverized. Next, a conductive agent, a binder, a cobalt cobalt nickel carbon compound, and a deionized aqueous solution are mixed and ground to form a slurry coated on the positive electrode side of the commercial separator, and the separator is dried to obtain a phosphate-modified separator. The modified membrane of the invention can inhibit the "shuttle effect" of lithium polysulfide in a lithium-sulfur battery, improve the electrochemical performance, capacity and cycle life of the lithium-sulfur battery, and is suitable for mass production.
A novel lithium-sulfur solid state battery that makes it easy to stably obtain desired battery characteristics is provided. A sulfur positive electrode, a lithium negative electrode, and a solid electrolyte disposed between the sulfur positive electrode and the lithium negative electrode, and the sulfur positive electrode and the solid electrolyte are brought into contact with each other. Provided on the surface side is a lithium-sulfur solid battery 10 in which a convex portion 11c is formed on one side and a concave portion 13c is formed on the other side to which the convex portion 11c is fitted. [Selection] Figure 1
