公开(公告)号：US20180145371A1

公开(公告)日：2018-05-24

申请号：US15736067

申请日：2016-06-23

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Noriyuki TAMURA ,  Sadanori HATTORI

IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: In terms of a lithium ion secondary battery using, in a positive electrode, a lithium transition metal composite oxide containing an over-stoichiometric amount of lithium, a lithium ion secondary battery in which an amount of a gas generated during charge/discharge cycles is reduced and capacity retention is improved is provided. The lithium ion secondary battery includes a positive electrode containing a lithium transition metal composite oxide containing Fe and containing an over-stoichiometric amount of lithium, and a nonaqueous electrolyte solution, and the nonaqueous electrolyte solution contains a nonaqueous organic solvent, an electrolyte, and lithium difluorophosphate.

公开(公告)号：US20180115018A1

公开(公告)日：2018-04-26

申请号：US15558689

申请日：2016-02-23

Applicant: NEC CORPORATION

Inventor： Terumasa SHIMOYAMA ,  Takanori NISHI ,  Shigeyuki IWASA ,  Katsumi MAEDA

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/60 ,  H01M4/587

CPC classification number: H01M10/0568 ,  H01M4/587 ,  H01M4/608 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2220/30 ,  H01M2300/0025 ,  Y02T10/7011

Abstract: A secondary battery exhibiting high charge and discharge rate characteristics can be provided, by making the secondary battery have a cathode including a nitroxyl compound taking a nitroxyl cation substructure represented by the following formula (1) in an oxidized state and a nitroxyl radical substructure represented by the following formula (2) in a reduced state, an anode including an active material capable of reversibly intercalating and deintercalating a lithium ion, and an electrolyte solution including a lithium salt and an aprotic organic solvent, and employing Li[(FSO2)2N] as the lithium salt:

公开(公告)号：US20160322667A1

公开(公告)日：2016-11-03

申请号：US15108073

申请日：2014-12-16

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Kentaro NAKAHARA

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/48 ,  H01M10/44 ,  H01M10/0585 ,  C07D327/00 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  C07D327/00 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/0585 ,  H01M10/446 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: The present invention relates to a non-aqueous electrolyte solution characterized by containing at least one type of cyclic sulfonic acid ester compound represented by general formula (1). According to the present invention, a non-aqueous electrolyte solution capable of improving battery characteristics can be provided. (In the formula, R1 to R4 are each independently a hydrogen atom, a fluorine atom, an alkyl group having 1-6 carbon atoms or an alkoxy group having 1-6 carbon atoms, and Z is a substituted or unsubstituted alkylene group having 1-6 carbon atoms, a substituted or unsubstituted fluoroalkylene group having 1-6 carbon atoms, or a divalent organic group having 2-6 carbon atoms in which alkylene unit(s) or fluoroalkylene unit(s) are bonded via one or more ether bonds.)

Abstract translation: （式中，R 1〜R 4各自独立地为氢原子，氟原子，碳原子数1〜6的烷基或碳原子数1〜6的烷氧基，Z为取代或未取代的1个 6个碳原子，具有1-6个碳原子的取代或未取代的氟代亚烷基或具有2-6个碳原子的二价有机基团，其中亚烷基单元或氟亚烷基单元通过一个或多个醚键键合 。）

公开(公告)号：US20240183779A1

公开(公告)日：2024-06-06

申请号：US18283099

申请日：2022-03-23

Applicant: NEC Corporation

Inventor： Katsumi MAEDA

IPC: G01N21/64 ,  G01N27/416

CPC classification number: G01N21/6428 ,  G01N27/4168 ,  G01N2333/415

Abstract: Provided is a method for sensing methyl salicylate, which is a plant hormone released when a plant is infected with a disease in cultivation of plants including agricultural crops, and thereby provided a method for early in-situ detection of disease infection in a plant. Disease infection in a plant can be detected at an early stage by utilizing a zinc compound that selectively recognizes methyl salicylate, which is a plant hormone released when a plant is infected by a pathogen, and forms a complex with methyl salicylate, as a receptor for sensing, and by utilizing a fluorescence emission phenomenon or a change in electrochemical behavior after the reaction with methyl salicylate.

公开(公告)号：US20210230002A1

公开(公告)日：2021-07-29

申请号：US16972356

申请日：2019-06-04

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA

IPC: C01B32/194 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525

Abstract: An object of the present invention is to provide a reduced graphene-based material to improve charge/discharge efficiency of a lithium ion secondary battery. The reduced graphene-based material of the present invention has a coating containing lithium element (Li), phosphorus element (P), fluorine element (F), and oxygen element (O) on at least a part of the surface, wherein in the elemental composition of the surface as measured by X-ray photoelectron spectroscopy (XPS), the proportion of lithium element (Li) is 0.8 to 2.0 (atomic %), the proportion of phosphorus element (P) is 0.5 to 2.0 (atomic %), the proportion of fluorine element (F) is 0.05 to 1.0 (atomic %), and the proportion of oxygen element (O) is 7.0 to 12.0 (atomic %).

公开(公告)号：US20190044182A1

公开(公告)日：2019-02-07

申请号：US15759662

申请日：2016-08-08

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Noriyuki TAMURA ,  Mika SHIBA

IPC: H01M10/0525 ,  H01M4/485 ,  H01M4/587 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/0568

Abstract: Provided are a lithium secondary battery high in capacity and excellent in charge and discharge rate characteristics, and a method for producing the same. The lithium secondary battery of the present invention includes a positive electrode containing a positive electrode active substance containing a lithium transition metal oxide, a negative electrode containing a negative electrode active substance containing a heat-treated graphite material, and an electrolytic solution, wherein the heat-treated graphite material has passages of lithium ions penetrating at least one or more layers of graphene layers from the surface of a graphene stacking structure; and the electrolytic solution contains lithium difluorophosphate.

公开(公告)号：US20160028119A1

公开(公告)日：2016-01-28

申请号：US14772595

申请日：2014-08-20

Applicant: SEKISUI CHEMICAL CO., LTD. ,  NEC CORPORATION

Inventor： Masaru HEISHI ,  Takuya TOYOKAWA ,  Katsumi MAEDA ,  Noriyuki TAMURA ,  Kentaro NAKAHARA

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/505

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02T10/7011

Abstract: A lithium ion secondary battery comprising: a positive electrode comprising a positive electrode active material; a negative electrode comprised mainly of a material capable of storing and releasing lithium ions; and an electrolytic liquid, the positive electrode active material being a lithium-iron-manganese complex oxide having a layered rock salt structure and represented by a chemical formula: LixFesM1(z-s)M2yO2-δ  wherein 1.05≦x≦1.32, 0.06≦s≦0.50, 0.06≦z≦0.50, 0.33≦y≦0.63, and 0≦δ≦0.80; M1 represents a metal selected from the group consisting of Co, Ni, Mn and a mixture thereof; and M2 represents a metal selected from the group consisting of Mn, Ti, Zr and a mixture thereof, the electrolytic liquid comprising 1,1,2,3,3,3-hexafluoropropyl difluoromethyl ether represented by the following formula (1):

Abstract translation: 一种锂离子二次电池，包括：正极，包括正极活性物质; 主要由能够储存和释放锂离子的材料构成的负极; 和电解液，所​​述正极活性物质是具有层状岩盐结构并由化学式：LixFesM1（zs）M2yO2-δ表示的锂 - 铁 - 锰复合氧化物，其中1.05＆nlE; x＆nlE; 1.32,0.06和nlE; s＆nlE; 0.50,0.06＆nlE; z＆nlE; 0.50,0.33＆nlE; y＆nlE; 0.63和0＆amp; nlE;δ＆nlE; 0.80; M1表示选自Co，Ni，Mn及其混合物的金属; M2表示选自Mn，Ti，Zr及其混合物的金属，电解液包含由下式（1）表示的1,1,2,3,3,3-六氟丙基二氟甲基醚：

公开(公告)号：US20230236210A1

公开(公告)日：2023-07-27

申请号：US18008076

申请日：2021-06-03

Applicant: NEC Corporation

Inventor： Katsumi MAEDA ,  Shigeyuki IWASA

IPC: G01N33/74 ,  G01N21/64 ,  G01N33/543 ,  C09K11/06 ,  G01N27/48 ,  G01N27/327

CPC classification number: G01N33/74 ,  G01N21/6428 ,  G01N33/54373 ,  C09K11/06 ,  G01N27/48 ,  G01N27/3277 ,  G01N2021/6439 ,  C09K2211/182 ,  C09K2211/1007

Abstract: Provided is a method for sensing methyl salicylate, which is a plant hormone released when a plant is infected with a disease in cultivation of plants including agricultural crops, and thereby provided a method for early in-situ detection of disease infection in a plant. With the present embodiment, disease infection in a plant can be detected at an early stage by utilizing a rare earth compound that selectively recognizes and forms a complex with methyl salicylate, which is a plant hormone released when a plant is infected by a pathogen, as a receptor for sensing, and by utilizing a fluorescence emission phenomenon and a change in electrochemical behavior after the reaction with methyl salicylate.

公开(公告)号：US20230168196A1

公开(公告)日：2023-06-01

申请号：US18071076

申请日：2022-11-29

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Masayoshi TSUJI

IPC: G01N21/64 ,  G01N33/58 ,  G01N33/533

CPC classification number: G01N21/6428 ,  G01N33/533 ,  G01N33/582

Abstract: An example objective of the present invention is to provide a method for detecting a tyrosine residue in a sample and a compound that can be used in the method. One aspect of the present embodiment relates to a method for detecting a tyrosine residue in a sample, wherein fluorescence emission from a reaction product of a terbium compound represented by the predetermined formula and a tyrosine residue is detected.

公开(公告)号：US20200058932A1

公开(公告)日：2020-02-20

申请号：US16346733

申请日：2017-10-05

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/58 ,  H01M10/0568 ,  H01M10/0567

Abstract: A graphite-based material for a lithium ion secondary battery, the graphite-based material comprising a coating film on at least a part of the surface of a graphite particle, the coating film comprising a lithium fluorophosphate compound having a specific composition.