公开(公告)号：US20180347068A1

公开(公告)日：2018-12-06

申请号：US16057982

申请日：2018-08-08

Applicant: TODA KOGYO CORPORATION

Inventor： Hiroyasu WATANABE ,  Daisuke MORITA ,  Manabu YAMAMOTO ,  Kazumichi KOGA ,  Akihisa KAJIYAMA ,  Hiroaki MASUKUNI ,  Hideaki SADAMURA ,  Ryuta MASAKI ,  Kazutoshi MATSUMOTO

IPC: C30B1/10 ,  C30B1/02

CPC classification number: C30B1/10 ,  C01G45/1242 ,  C01G51/54 ,  C01G53/54 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/80 ,  C30B1/02 ,  H01M4/505 ,  H01M4/525 ,  Y10T428/2982

Abstract: The present invention provides a precursor of positive electrode active substance particles for non-aqueous electrolyte secondary batteries which have a high discharge voltage and a high discharge capacity, hardly suffer from side reactions with an electrolyte solution, and are excellent in cycle characteristics, positive electrode active substance particles for non-aqueous electrolyte secondary batteries, and processes for producing these particles, and a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries having a spinel structure with a composition represented by the following chemical formula (1), in which the positive electrode active substance particles satisfy the following characteristic (A) and/or characteristic (B) when indexed with Fd-3m in X-ray diffraction thereof: (A) when indexed with Fd-3m in X-ray diffraction of the positive electrode active substance particles, a ratio of I(311) to I(111) [I(311)/I(111)] is in the range of 35 to 43%, and/or (B) when indexed with Fd-3m in X-ray diffraction of the positive electrode active substance particles, a gradient of a straight line determined by a least square method in a graph prepared by plotting sin θ in an abscissa thereof and B cos θ in an ordinate thereof wherein B is a full-width at half maximum with respect to each peak position 2θ (10 to 90°) is in the range of 3.0×10−4 to 20.0×10−4; and Li1+xMn2-y-zNiyMzO4  Chemical Formula (1) wherein x, y, z fall within the range of −0.05·x·0.15, 0.4·y·0.6 and 0·z·0.20, respectively; and M is at least one element selected from the group consisting of Mg, Al, Si, Ca, Ti, Co, Zn, Sb, Ba, W and Bi.

公开(公告)号：US20160164086A1

公开(公告)日：2016-06-09

申请号：US15019322

申请日：2016-02-09

Applicant: TODA KOGYO CORPORATION

Inventor： Akinori YAMAMOTO ,  Tomoko OKITA ,  Hiroshi YAMAMOTO ,  Kohji MORI ,  Kazumichi KOGA ,  Akihisa KAJIYAMA

IPC: H01M4/485 ,  C01G23/00 ,  H01M10/0525

CPC classification number: H01M4/485 ,  C01G23/005 ,  C01G23/006 ,  C01P2002/32 ,  C01P2002/60 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/80 ,  C01P2006/12 ,  C01P2006/40 ,  H01B1/08 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54

Abstract: According to the present invention, there are provided lithium titanate particles which exhibit an excellent initial discharge capacity and an enhanced high-efficiency discharge capacity retention rate as an active substance for non-aqueous electrolyte secondary batteries and a process for producing the lithium titanate particles, and Mg-containing lithium titanate particles.

Abstract translation: 根据本发明，提供了作为非水电解质二次电池的活性物质，具有优异的初始放电容量和提高的高效率放电容量保持率的钛酸锂颗粒和钛酸锂颗粒的制造方法， 和含Mg的钛酸锂颗粒。

公开(公告)号：US20130330626A1

公开(公告)日：2013-12-12

申请号：US13967395

申请日：2013-08-15

Applicant: TODA KOGYO CORPORATION

Inventor： Akihisa KAJIYAMA ,  Kazuhiko KIKUYA ,  Teruaki SANTOKI ,  Osamu SASAKI ,  Satoshi NAKAMURA ,  Taiki IMAHASHI ,  Hideaki SADAMURA

IPC: H01M4/48

CPC classification number: H01M4/48 ,  C01F7/141 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/00 ,  C01G53/42 ,  C01G53/50 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/32 ,  C01P2006/40 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: The present invention relates to Li—Ni-based composite oxide particles comprising Mn, and Co and/or Al, wherein Co and Al are uniformly dispersed within the particles, and Mn is present with a gradient of its concentration in a radial direction of the respective particles such that a concentration of Mn on a surface of the respective particles is higher than that at a central portion thereof. The Li—Ni-based composite oxide particles can be produced by allowing an oxide and a hydroxide comprising Mn to mechanically adhere to Li—Ni-based oxide comprising Co and/or Al; and then heat-treating the obtained material at a temperature of not lower than 400° C. and not higher than 1,000° C. The Li—Ni-based composite oxide particles of the present invention are improved in thermal stability and alkalinity.

Abstract translation: 本发明涉及包含Mn和Co和/或Al的Li-Ni基复合氧化物颗粒，其中Co和Al均匀地分散在颗粒内，并且Mn以其浓度沿着 相应的颗粒使得各个颗粒的表面上的Mn浓度高于其中心部分的浓度。 可以通过使包含Mn的氧化物和氢氧化物机械地粘附到包含Co和/或Al的Li-Ni基氧化物上来制备Li-Ni基复合氧化物颗粒; 然后在不低于400℃且不高于1000℃的温度下对所得材料进行热处理。本发明的Li-Ni基复合氧化物颗粒的热稳定性和碱度提高。