公开(公告)号：US10964950B2

公开(公告)日：2021-03-30

申请号：US15561349

申请日：2015-09-17

Applicant: TAIHEIYO CEMENT CORPORATION

Inventor： Hiroki Yamashita ,  Tomoki Hatsumori ,  Atsushi Nakamura ,  Takaaki Ogami

IPC: H01M4/62 ,  C01B25/45 ,  H01M4/36 ,  H01M4/58 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M10/0525 ,  H01M10/052 ,  H01M10/054 ,  C01B33/20 ,  H01M4/02

Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.

公开(公告)号：US20210074991A1

公开(公告)日：2021-03-11

申请号：US17049977

申请日：2019-05-06

Applicant: I-TEN

Inventor： Fabien GABEN

IPC: H01M4/04 ,  H01M4/1391 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M4/58 ,  H01M4/36 ,  H01M4/1397 ,  H01M4/136 ,  H01M4/131 ,  H01G11/24 ,  H01G11/30

Abstract: The invention relates to a method for producing a porous electrode, said electrode comprising a layer deposited on a substrate, said layer being binder-free and having a porosity of more than 30 volume %, and preferably less than 50 volume %, and pores having an average diameter of less than 50 nm, said method being characterized in that: (a) a colloidal suspension is provided, containing aggregates or agglomerates of nanoparticles of at least one material P having an average primary diameter D50 of less than or equal to 80 nm, and preferably less than or equal to 50 nm, said aggregates or agglomerates having an average diameter comprised between 80 nm and 300 nm (preferably between 100 nm and 200 nm), (b) a substrate is provided, (c) a porous, preferably mesoporous, electrode layer is deposited on said substrate by electrophoresis, by ink-jet, by doctor blade, by roll coating, by curtain coating or by dip-coating, from said colloidal suspension provided in step (a); (d) said layer obtained in step (c) is dried, preferably in an air flow, (e) optionally, consolidation of the porous, preferably mesoporous electrode layer obtained in step (d) by pressing and/or heating.

公开(公告)号：US20210050587A1

公开(公告)日：2021-02-18

申请号：US16980151

申请日：2019-08-02

Applicant: LG CHEM, LTD.

Inventor： Dongwook LEE ,  Kwonnam SOHN

IPC: H01M4/133 ,  H01M4/134 ,  H01M4/131 ,  H01M4/136 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/58 ,  H01M10/052

Abstract: A positive electrode active material for a lithium secondary battery including a carbon material impregnated with catalyst particles, and a sulfur-carbon composite, a preparation method thereof, and a positive electrode for a lithium secondary battery, and the lithium secondary battery including the same.

公开(公告)号：US10923704B2

公开(公告)日：2021-02-16

申请号：US15611284

申请日：2017-06-01

Applicant: HYDRO-QUÉBEC

Inventor： Karim Zaghib ,  Michel Armand ,  Abdelbast Guerfi ,  Michel Perrier ,  Elisabeth Dupuis ,  Patrick Charest

IPC: H01M4/00 ,  H01M4/04 ,  H01G11/42 ,  H01G11/46 ,  H01G11/86 ,  H01M2/14 ,  H01M2/16 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0569 ,  H01G11/06 ,  H01G11/24 ,  H01G11/28 ,  H01G11/30 ,  H01G11/32 ,  H01M4/133 ,  H01M4/136 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0568 ,  H01M4/02

Abstract: A method of preparing an electrochemical electrode which is partially or totally covered with a film that is obtained by spreading an aqueous solution comprising a water-soluble binder over the electrode and subsequently drying same. The production cost of the electrodes thus obtained is reduced and the surface porosity thereof is associated with desirable resistance values.

公开(公告)号：US10916803B1

公开(公告)日：2021-02-09

申请号：US16143691

申请日：2018-09-27

Applicant: Cornerstone Research Group, Inc.

Inventor： Brian E. Henslee ,  Joel P. Brubaker ,  Frank M. Zalar

IPC: H01M4/133 ,  H01M4/13 ,  H01M4/139 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/96 ,  H01M10/0565 ,  H01M10/052 ,  H01M4/38 ,  H01M4/58 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M10/058

Abstract: A lithium-sulfur battery cathode including conductive porous carbon particles vacuum infused with sulfur and a conductive collector substrate to which the sulfur infused porous carbon particles are deposited. The sulfur infused carbon particles are encapsulated by an encapsulation polymer, the encapsulation polymer having ionic conductivity, electronic conductivity, polysulfide affinity, or combinations thereof. A lithium-sulfur battery including the lithium-sulfur battery cathode, a lithium anode and an electrolyte disposed between the sulfur cathode and the lithium anode is also provided. Methods of producing the sulfur cathode for use in a lithium-sulfur battery by a hybrid vacuum-and-melt method are also provided.

公开(公告)号：US20210008628A1

公开(公告)日：2021-01-14

申请号：US16923189

申请日：2020-07-08

Applicant: Saudi Arabian Oil Company

Inventor： Muhammad Arsalan ,  Edreese Alsharaeh ,  Yasmin Mussa

IPC: B22F9/04 ,  C01B32/198 ,  C01G51/04 ,  H01M4/1393 ,  H01M4/1397 ,  H01M10/0525 ,  H01M4/36 ,  C01B21/064

Abstract: Presented here are nanocomposites and rechargeable batteries. In certain embodiments, nanocomposites a nanocomposite is resistant to thermal runaway, and useful as an electrode material in rechargeable batteries that are safe, reliable, and stable when operated at high temperature and high pressure. The present disclosure also provides methods of preparing rechargeable batteries. For example, rechargeable batteries that include nanocomposites of the present disclosure as an electrode material have, in some embodiments, an enhanced performance and stability over a broad temperature range from room temperature to high temperatures. These batteries fill an important need by providing a safe and reliable power source for devices operated at high temperatures and pressures such as downhole equipment used in the oil industry.

公开(公告)号：US20200350560A1

公开(公告)日：2020-11-05

申请号：US16961870

申请日：2019-01-16

Applicant: Arkema France

Inventor： Alexander Korzhenko ,  Patrick Delprat ,  Christophe Vincendeau

IPC: H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

Abstract: A formulation is described in the form of a solid-liquid dispersion for the manufacture of a cathode, comprising a liquid-phase solvent, a sulfur-carbon composite in the form of particles with a median diameter D50 of less than 50 μm, and less than 10% by number of the particles of the dispersion are particles of sulfur in elemental form.

公开(公告)号：US20200350093A1

公开(公告)日：2020-11-05

申请号：US16926943

申请日：2020-07-13

Applicant: PPG INDUSTRIES OHIO, INC.

Inventor： Randy E. Daughenbaugh ,  Stuart D. Hellring

IPC: H01B1/24 ,  C09D7/61 ,  C25D13/02 ,  C25D15/00 ,  C09D5/44 ,  C25D13/16 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/58 ,  H01M4/62 ,  C09D5/24

Abstract: The present invention is directed to electrodepositable compositions comprising: (a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising: (i) lithium-containing particles, and (ii) electrically conductive particles, wherein the composition has a weight ratio of the solid particles to the ionic resin of at least 17:1, and wherein the weight ratio of the lithium-containing particles to the electrically conductive particles is at least 3:1. The present invention is additionally directed to a battery electrode comprising a substrate and a coating applied to a surface of the substrate. The coating is deposited from the electrodepositable composition described above.

公开(公告)号：US20200313155A1

公开(公告)日：2020-10-01

申请号：US16669131

申请日：2019-10-30

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Yibo ZHANG ,  Xiang LI ,  Bin WANG ,  Qiaoshu HU

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/36

Abstract: The present application relates to a composite current collector, and a composite electrode and an electrochemical device comprising the same. The composite current collector of the present application comprises an intermediate layer, a first metal layer, a second metal layer, and a through hole. The intermediate layer has a first surface and a second surface opposite to the first surface, the first metal layer is disposed on the first surface, and the second metal layer is disposed on the second surface. The through hole penetrates through the intermediate layer, the first metal layer and the second metal layer, wherein the through hole is filled with an electrically insulated ionic conductor.

公开(公告)号：US10790537B2

公开(公告)日：2020-09-29

申请号：US15773805

申请日：2016-11-12

Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES

Inventor： Yongbing Tang ,  Xiaolong Zhang ,  Fan Zhang

IPC: H01M10/052 ,  H01M10/0525 ,  H01M4/583 ,  H01M10/0567 ,  H01M10/058 ,  H01M4/66 ,  H01M4/48 ,  H01M4/58 ,  H01M4/38 ,  H01M2/02 ,  H01M2/14 ,  H01M2/16 ,  H01M4/1393 ,  H01M4/1397 ,  H01M10/04 ,  H01M10/0569 ,  H01M6/16 ,  C01B32/184 ,  H01M4/02

Abstract: A secondary battery and its preparation method, the secondary battery having a negative electrode containing a negative current collector and no negative active material; an electrolyte having an electrolyte salt and an organic solvent; a separator; a positive electrode having a positive active material layer containing a positive active material, wherein the positive active material comprises a material having a layered crystal structure; and a battery case used for packaging. Main active component of the secondary battery is the positive active material having a layered crystal structure, which is environmentally-friendly and low in cost; meanwhile, negative active material is not needed by the second battery system, thereby remarkably reducing the weight and cost of the battery and improving the battery energy density. The reaction mechanism adopted by the secondary battery significantly increases the working voltage of the battery and further improves the energy density of the battery.