公开(公告)号：US20190393503A1

公开(公告)日：2019-12-26

申请号：US16449455

申请日：2019-06-24

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Yoshihito TAKANO ,  Masakazu KONDO ,  Hirotsuna YAMADA

IPC: H01M4/583 ,  H01M4/134 ,  H01M4/36 ,  H01M4/131 ,  H01M4/133 ,  H01M10/0525

Abstract: A material for a negative electrode active material having capability of achieving excellent cycle performance while maintaining satisfactory initial efficiency (initial capacity), a production method for the material, a composition for a negative electrode, using the material, a negative electrode, and a secondary battery. A core-shell structure that includes the following components (A) and (B), and satisfies the following conditions (i) and (ii): (A): a core containing at least Si (silicon), O (oxygen) and C (carbon) as a constituent element, and containing crystalline carbon and non-crystalline carbon as a constituent; and (B): a shell involving the core, and including a SiOC structure having a graphene layer, and (i): having an atomic composition represented by formula SiOxCy (0.5

公开(公告)号：US20190207217A1

公开(公告)日：2019-07-04

申请号：US16232085

申请日：2018-12-26

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Soichiro SATO ,  Yoshihito TAKANO ,  Hirotsuna YAMADA ,  Keiichiro KANAO ,  Miwako NISHIMURA ,  Tetsuro KIZAKI

IPC: H01M4/583

Abstract: A composition for a secondary battery negative electrode including a carbonaceous material (a) and a silicon oxide structure (b), wherein the silicon oxide structure (b) includes a silicon oxide framework containing Si and O in its atomic composition and silicon-based nanoparticles that are chemically bonded to the silicon oxide framework as components, wherein the silicon oxide structure (b) is contained in a proportion of 15 mass % or more with respect to a total amount of the carbonaceous material (a) and the silicon oxide structure (b), and wherein the silicon oxide structure (b) satisfies the following conditions (i) to (iii): (i) having an atomic composition represented by a general formula SiOx2Hy2 (0.3

公开(公告)号：US20190152787A1

公开(公告)日：2019-05-23

申请号：US16313866

申请日：2017-01-11

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Yoshihito TAKANO ,  Tetsuro KIZAKI ,  Hirotsuna YAMADA ,  Masakazu KONDO ,  Akira TAKAHASHI

IPC: C01B33/02 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/38

Abstract: A silicon nanoparticle-containing hydrogen polysilsesquioxane calcined product to be covered by the invention, represented by general formula SiOx2Hy2(0.3

公开(公告)号：US20190131621A1

公开(公告)日：2019-05-02

申请号：US16091529

申请日：2017-04-06

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Yoshihito TAKANO ,  Tetsuro KIZAKI ,  Masakazu KONDO

IPC: H01M4/36 ,  H01M4/485 ,  C01B33/113

Abstract: A method for producing a negative electrode active material for lithium ion secondary batteries containing a silicon-titanium oxide composite, which is characterized in that: the silicon-titanium oxide composite contained in the negative electrode active material for lithium ion secondary batteries is obtained by coating a silicon oxide by a titanium oxide; the silicon oxide is obtained by subjecting a polymerized silsesquioxane (PSQ), which has a structure of formula (1) and is obtained by subjecting a silicon compound to hydrolysis and a condensation polymerization reaction, to a heat treatment in an inert gas atmosphere, and is represented by general formula SiOxCyHz (wherein 0.5

公开(公告)号：US20180212228A1

公开(公告)日：2018-07-26

申请号：US15742523

申请日：2016-07-06

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Keizo IWATANI ,  Tetsuro KIZAKI ,  Yoshihito TAKANO ,  Masakazu KONDO

IPC: H01M4/1391 ,  H01M4/131 ,  H01M4/133 ,  H01M4/48 ,  H01M10/0525 ,  H01M2/16 ,  H01M4/66 ,  H01M4/62

CPC classification number: H01M4/1391 ,  C01B33/18 ,  H01M2/16 ,  H01M4/131 ,  H01M4/133 ,  H01M4/386 ,  H01M4/48 ,  H01M4/621 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

Abstract: A negative electrode active material for the lithium ion secondary battery contains silicon oxide that is obtained by heat-treating, under an inert gas atmosphere, a hydrogen silsesquioxane polymer (HPSQ) obtained by allowing hydrolysis of a silicon compound represented by formula (1) and then a condensation reaction of the resulting material, contains Si, O and H, and has, in an infrared spectrum, a ratio (I1/I2) in the range of 0.01 to 0.35 with regard to intensity (I1) of peak 1 at 820 to 920 cm−1 due to a Si—H bond to intensity (I2) of peak 2 at 1000 to 1200 cm−1 due to a Si—O—Si bond, and is represented by general formula SiOxHy (1