Titles:
Method for forming positive electrode for lithium-sulfur secondary battery, positive electrode for lithium-sulfur secondary battery
リチウム硫黄二次電池用正極の形成方法、リチウム硫黄二次電池用正極
Abstracts:
The present invention provides a lithium-sulfur secondary battery that exhibits improved weight energy density and improved impedance characteristics and charge / discharge characteristics. A substrate preparation step (S1) for preparing a substrate to be a metal foil, and a plurality of carbon nanotubes are arranged on the surface of the substrate so as to be oriented in a direction substantially perpendicular to the substrate main surface with the substrate surface side as a base end. A growth step S2 for growing, and a covering step S3 for melting and diffusing sulfur from the growth end side of the carbon nanotubes to cover the surface of each carbon nanotube with sulfur. The formation method of the positive electrode for lithium sulfur secondary batteries which has the embossing process S11 to form. [Selection] Figure 4
Titles:
RATIONAL DESIGN OF REDOX MEDIATOR FOR FAST AND ENERGY-EFFICIENT CHARGING OF SULFUR CATHODES
CONCEPTION RATIONNELLE DE MÉDIATEUR REDOX POUR UNE CHARGE RAPIDE ET EFFICACE EN ÉNERGIE DE CATHODES DE SOUFRE
Abstracts:
A battery electrolyte solution is that includes an organic electrolyte solution, a lithium-sulfur (Li2S) compound, soluble lithium polysulfide (Li2Sx) microparticles, and a redox mediator comprising a soluble quinone derivative.
Une solution d'électrolyte de batterie est caractérisée en ce qu'elle comprend une solution d'électrolyte organique, un composé lithium-soufre (Li2S), des microparticules solubles de polysulfure de lithium (Li2Sx), et un médiateur redox comprenant un dérivé de quinone soluble.
Applicant:
UNIV LELAND STANFORD JUNIOR [US]
Inventors:
BAO ZHENAN [US]
CUI YI [US]
TSAO YUCHI [US]
LEE MIN [US]
A method for charging a lithium-sulfur solid state battery capable of increasing the storage capacity of the lithium-sulfur solid state battery is provided. A method for charging a lithium-sulfur solid battery increases the temperature of the lithium-sulfur solid battery during the charging period of the lithium-sulfur solid battery. [Selection] Figure 1
Titles:
ACTIVE MATERIAL FORMULATION FOR LI-S BATTERY AND PREPARATION PROCESS
FORMULATION DE MATIÈRE ACTIVE POUR ACCUMULATEUR LI-S ET PROCÉDÉ DE PRÉPARATION
Abstracts:
The invention relates to an active material formulation comprising a sulfur-containing material and an electrically conductive composition, characterized in that the electrically conductive composition comprises carbon nanotubes and carbon fibers. The invention further relates to a process for preparing the active material formulation and also to a catholyte comprising the formulation, a cathode comprising the catholyte and a battery comprising the cathode.
L'invention porte sur une formulation de matière active comprenant un matériau soufré et une composition conductrice électrique caractérisée en ce que la composition conductrice électrique comprend des nanotubes de carbone et des fibres de carbone. L'invention porte en outre sur un procédé de préparation de la formulation de matière active ainsi que sur un catholyte comprenant la formulation, une cathode comprenant le catholyte et un accumulateur comprenant la cathode.
Applicant:
ARKEMA FRANCE [FR]
Inventors:
KORZHENKO ALEXANDER [FR]
PLEE DOMINIQUE [FR]
Titles:
SEPARATOR FOR LITHIUM-SULFUR BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM-SULFUR BATTERY COMPRISING SAME
리튬-황 전지용 분리막, 그의 제조방법, 및 그를 포함하는 리튬-황 전지
Abstracts:
The present invention provides a separator for a lithium-sulfur battery, a lithium-sulfur battery manufactured using the same, and a method for manufacturing the separator, the separator comprising: a separator substrate; and a coating layer containing a sulfonate anionic group (-SO3 -), and formed on one or more surfaces of the separator substrate, wherein the coating layer comprises: a structural unit derived from one or more types of compounds containing one or more selected from a catechol group and a pyrogallol group, and one or more sulfonic acid groups; and a structural unit derived from dopamine.
본 발명은 분리막 기재; 및 상기 분리막 기재의 일면 이상에 형성된, 술폰산 음이온기(-SO3 -)를 포함하는 코팅층;을 포함하며, 상기 코팅층은 카테콜기 및 피로갈롤기 중에서 선택되는 1종 이상 및 하나 이상의 술폰산기를 포함하는 1종 이상의 화합물로부터 유도되는 구조단위; 및 도파민으로부터 유도되는 구조단위;를 포함하는 리튬-황 전지용 분리막, 이를 사용하여 제조된 리튬-황 전지, 및 상기 분리막의 제조방법을 제공한다.
Applicant:
LG CHEMICAL LTD [KR] (주식회사 엘지화학)
Inventors:
KIM SUNJIN [KR] (김선진)
YANG DOO KYUNG [KR] (양두경)
Title:
Preparation method for a composite comprising sulfur-containing conductive polymer
Abstract:
A preparation method for a composite comprising conductive sulfur-containing polymer, comprising steps of: A. uniformly mixing sulfur, polymer, and graphene into a mixture; B. heating the mixture to 80 DEG C to 120 DEG C in an inert gas enclosure for drying and dehydrogenating the mixture to form a conductive polymer; and C. keeping the mixture of step B at constant temperature for 0.5 to 3 hours at a temperature of 150 DEG C to 300 DEG C and a pressure of 14.5 Psi to 725 Psi until the mixture is dehydrogenated and the sulfur is melted, so as to form a sulfur-containing conductive polymer, and the sulfur-containing conductive polymer further combining with the graphene to form a composite comprising sulfur-containing conductive polymer.
A method for charging a lithium-sulfur solid state battery capable of increasing the storage capacity of the lithium-sulfur solid state battery while suppressing deterioration of the lithium-sulfur solid state battery due to overvoltage is provided. A method for charging a lithium-sulfur solid battery includes a constant current charging step and a constant voltage charging step executed after the constant current charging step. [Selection] Figure 1
Titles:
Composite cathode material and preparation method and application thereof
一种复合正极材料及其制备方法与应用
Abstracts:
The invention discloses a composite cathode material and a preparation method and application thereof. The composite positive electrode material comprises a three-phase system of a fluorinated carbon-sulfur-metal oxide, the three-phase system comprising a fluorinated carbon-supported sulfur composite material and a metal oxide, the fluorinated carbon-supported sulfur composite material and metal oxide The mass ratio of the material is (1‐2.5): (0.01‐0.9). In the preparation, the sulfur and the carbon fluoride are mixed and ball-milled and sintered, and the obtained sintered material is ground to obtain a carbon fluoride-supported sulfur composite material; the above-mentioned carbon fluoride-supported sulfur composite material and the metal oxide powder are uniformly mixed and classified. Sieve to obtain a composite positive electrode material. The composite positive electrode material has a stable discharge voltage, a clear discharge platform, and a significant improvement in material stability, capacity utilization, and rate performance.
Titles:
SULFUR POWDER, SULFUR ELECTRODE, BATTERY COMPRISING SAME, AND MANUFACTURING METHOD THEREFOR
유황 분말, 유황 전극, 이를 포함하는 전지 및 제조 방법
Abstracts:
A sulfur powder, a sulfur electrode, a battery comprising same, and a manufacturing method therefor are disclosed. The manufacturing method of a sulfur powder comprises the steps of: positioning an electrode plate connected to an anode of a power controller in an aqueous solution containing hydrogen sulfide dissolved therein; controlling power of the power controller to form a thin film of a sulfur powder on a surface corresponding to a preset area of the electrode plate; and separating the formed sulfur powder from the electrode plate.
유황 분말, 유황 전극, 이를 포함하는 전지 및 제조 방법이 개시된다. 유황 분말의 제조 방법은 황화수소가 용해된 수용액 내에 전원 제어기의 양극에 연결된 전극판을 위치시키는 단계, 전원 제어기의 전력을 제어하여 전극판의 기 설정된 영역에 대응하는 표면에 유황 분말을 박막으로 형성시키는 단계 및 형성된 유황 분말을 전극판으로부터 분리시키는 단계를 포함한다.
Titles:
Lithium-sulfur battery cathode material and preparation method and application thereof
一种锂硫电池正极材料及其制备方法与应用
Abstracts:
The invention relates to the technical field of battery cathode materials, in particular to a lithium sulfur battery cathode material and a preparation method and application thereof. The invention discloses a preparation method of a lithium sulfur battery cathode material, comprising the following steps: Step 1: Denitrifying two-dimensional layered graphite phase carbon nitride g-CN to obtain ND‐g-CN with nitrogen defects Step 2: The sulfur element is supported on the ND-g-CN to obtain a lithium sulfur battery positive electrode material. The lithium-sulfur battery cathode material prepared in the preparation method has a high specific surface area, and the denitrification treatment enhances the conductivity, and the utility model is applied in a lithium-sulfur battery, which can load more sulfur, prevent polysulfide migration, and utilize at the same time. The conductive skeleton ND‐g‐CN supports the active material sulfur to ensure the conductivity of the positive electrode material as a whole, and the positive electrode material can also alleviate the change of the reaction volume of the electrode, so that the lithium sulfur battery exhibits good cycle performance and high coulombic efficiency.
