公开(公告)号：US20180145321A1

公开(公告)日：2018-05-24

申请号：US15568741

申请日：2016-04-13

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Mitsuru YAMAUCHI ,  Ryozo USHIO

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/36

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/66 ,  C01P2002/50 ,  C01P2002/60 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/30

Abstract: A positive electrode active material for non-aqueous electrolyte secondary battery with improved cycle characteristics and high temperature storage characteristics, without impairing an advantage of high capacity which lithium nickel composite oxide inherently possesses. The positive electrode active material for non-aqueous electrolyte secondary battery includes lithium nickel composite oxide represented by a general formula (1): Li1+uNi1−x−y−zCoxMnyMgzO2 (However, u, x, y and z in the formula satisfies 0.015≤u≤0.030, 0.05≤x≤0.20, 0.01≤y≤0.10, 0.01≤z≤0.05, 0.10≤x+y+z≤0.25.), and wherein crystallite diameter is 100 nm to 130 nm. In addition, the positive electrode active material for non-aqueous electrolyte secondary battery is produced at least by an oxidation roasting step, a mixing step, and a calcining step.

公开(公告)号：US20170012288A1

公开(公告)日：2017-01-12

申请号：US15115375

申请日：2015-01-29

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Koji YAMAJI ,  Takehide HONMA ,  Ryozo USHIO

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/04 ,  C01G53/00 ,  H01M4/505

CPC classification number: H01M4/525 ,  C01G53/00 ,  C01G53/006 ,  C01G53/40 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/40 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

Abstract: The object of the present invention is to improve the roundness of nickel-manganese composite hydroxide particles obtained by a crystallization process, and to improve the filling characteristic of cathode active material produced using the nickel-manganese composite hydroxide particles as a precursor. A reaction aqueous solution is formed by supplying a raw material aqueous solution including at least Ni and Mn, an aqueous solution including an ammonium-ion donor, and an alkali solution into a reaction tank, and mixing, then nickel-manganese composite hydroxide particles are crystallized. When doing this, the oxygen concentration inside the reaction tank is controlled to be 3.0% by volume or greater, the temperature of the reaction aqueous solution is controlled to be 35° C. to 60° C., and the nickel-ion concentration is controlled to be 1,000 mg/L or greater. As a result, nickel-manganese composite hydroxide particles are obtained that include secondary particles formed by an aggregation of plural primary particles and expressed by the general formula: NixMnyMt(OH)2+α (where 0.05≦x≦0.95, 0.05≦y≦0.95, 0≦t≦0.20, x+y+t=1, 0≦α≦0.5, and M is one or more elements selected from among Co, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W); and the average value of the roundness of cathode active material having a particle size that is 70% the average particle size or more is 0.82 or greater, and the tap density is 2.20 g/cm3 or greater.

Abstract translation: 本发明的目的是提高通过结晶方法获得的镍锰复合氢氧化物颗粒的圆度，并提高使用镍锰复合氢氧化物颗粒作为前体制备的正极活性物质的填充特性。 通过将至少包含Ni和Mn的原料水溶液，包含铵离子供体的水溶液和碱溶液供应到反应罐中并混合，形成反应水溶液，然后将镍锰复合氢氧化物颗粒 结晶。 当这样做时，将反应槽内的氧浓度控制在3.0体积％以上，将反应水溶液的温度控制在35℃〜60℃，镍离子浓度为 控制在1000mg / L以上。 结果，得到包含由多个一次粒子凝集形成的二次粒子并通过以下通式表示的镍锰复合氢氧化物粒子：NixMnyMt（OH）2 +α（0.05≤x≤0.95≤y≤ 0.95，0≤t≤0.20，x + y + t =1,0.0≤α≤0.5，M是选自Co，Ti，V，Cr，Zr，Nb，Mo，Hf，Ta和 W）; 平均粒径为70％以上的正极活性物质的圆度的平均值为0.82以上，振实密度为2.20g / cm 3以上。

公开(公告)号：US20180261873A1

公开(公告)日：2018-09-13

申请号：US15779451

申请日：2016-10-31

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Koji YAMAJI ,  Taira AIDA ,  Ryozo USHIO

IPC: H01M10/04 ,  H01M10/0525 ,  C01G41/02 ,  C01G53/04 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

CPC classification number: H01M10/0431 ,  C01G41/00 ,  C01G41/02 ,  C01G53/006 ,  C01G53/04 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525

Abstract: An object of the present invention is to provide a positive electrode material for a nonaqueous electrolyte secondary battery, which is capable of inhibiting the gelation of a positive electrode composite material paste without decreasing the charge and discharge capacity and the output characteristics, when used as a positive electrode material for batteries. The positive electrode active material for a nonaqueous electrolyte secondary battery comprises a mixture containing a lithium metal composite oxide represented by a general formula LiaNi1-x-y-zCoxMnyMzO2 (wherein, 0.03≤x≤0.35, 0≤y≤0.35, 0≤z≤0.05, 0.97≤a≤1.30, and M is at least one type of element selected from V, Fe, Cu, Mg, Mo, Nb, Ti, Zr, W and Al) and an ammonium tungstate powder, wherein when 5 g of the positive electrode material is mixed with 100 ml of pure water, the mixture is stirred for 10 minutes and then left to stand for 30 minutes, and then the pH of a supernatant fluid at 25° C. was measured, the pH ranges from 11.2 to 11.8.

公开(公告)号：US20160293952A1

公开(公告)日：2016-10-06

申请号：US15038228

申请日：2014-11-20

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Haruki KANEDA ,  Hiroko OSHITA ,  Masanori TAKAGI ,  Ryozo USHIO

IPC: H01M4/525 ,  C01G53/00

Abstract: Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries that achieves both high thermal stability and high charge/discharge capacity and has excellent cycle characteristics and an easy and safe production method thereof, and a nonaqueous electrolyte secondary battery using the positive electrode active material.A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes a crystallization step of adding an alkaline aqueous solution to a mixed aqueous solution containing at least nickel and cobalt for crystallization to obtain a nickel-containing hydroxide represented by a general formula Ni1−a′−b′COa′Mb′(OH)2, a mixing step of mixing the obtained nickel-containing hydroxide, a lithium compound, and a niobium compound to obtain a lithium mixture, and a firing step of firing the lithium mixture in an oxidative atmosphere at 700 to 840° C. to obtain a lithium-transition metal composite oxide.

Abstract translation: 非水电解质二次电池用正极活性物质的制造方法包括将碱性水溶液添加至至少含有镍和钴的混合水溶液进行结晶的结晶化工序，得到由通式Ni1表示的含镍氢氧化物 -a'-b'CO''Mb'（OH）2，混合所得到的含镍氢氧化物，锂化合物和铌化合物以获得锂混合物的混合步骤，以及煅烧锂混合物 在氧化气氛中在700〜840℃下反应，得到锂 - 过渡金属复合氧化物。

公开(公告)号：US20210039960A1

公开(公告)日：2021-02-11

申请号：US17083411

申请日：2020-10-29

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Takehide HONMA ,  Koji YAMAJI ,  Ryozo USHIO

IPC: C01G53/00 ,  H01M4/525 ,  H01M4/485 ,  H01M4/36 ,  H01M4/131 ,  H01M10/052 ,  H01M4/505 ,  H01M10/0525

Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that improves the cycling characteristic and high-temperature storability without impairing the charge/discharge capacity and the output characteristics. A nickel cobalt containing composite hydroxide is obtained by using a batch type crystallization method in which a raw material aqueous solution that includes Ni, Co and Mg is supplied in an inert atmosphere to a reaction aqueous solution that is controlled so that the temperature is within the range 45° C. to 55° C., the pH value is within the range 10.8 to 11.8 at a reference liquid temperature of 25° C., and the ammonium-ion concentration is within the range 8 g/L to 12 g/L. An Al-coated composite hydroxide that is expressed by the general formula: Ni1-x-y-zCoxAlyMgz(OH)2 (where, 0.05≤x≤0.20, 0.01≤y≤0.06, and 0.01≤z≤0.03) is obtained by mixing a slurry that includes the nickel cobalt containing composite hydroxide with a coating aqueous solution that includes Al to form a mixed aqueous solution, and coating the secondary particles with a coating film that includes Al or an Al compound. A cathode active material that is configured so that component elements that include Al are uniformly dispersed in the secondary particles is synthesized using the Al-coated composite hydroxide as a precursor.

公开(公告)号：US20140320140A1

公开(公告)日：2014-10-30

申请号：US14345605

申请日：2011-12-08

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Kazunari MAEBA ,  Ryozo USHIO

IPC: G01R31/36

CPC classification number: G01R31/3634 ,  H01M6/52 ,  H01M10/052 ,  H01M10/448 ,  H01M10/48 ,  H01M10/54 ,  Y02W30/84

Abstract: Provided is an efficient method for determining the completion of discharging waste batteries, the method being capable of accurately identifying the discharging states of the charge remaining in the waste batteries and appropriately determining the completion of discharging without measuring the residual voltage of each of the waste batteries. The method for determining the completion of discharging waste batteries according to the present invention is characterized in that after immersing the waste batteries in a conductive liquid, the concentration of hydrogen gas produced from the liquid is measured, thereby determining the completion of discharging the charge remaining in the waste batteries.

Abstract translation: 提供了一种用于确定废电池排放完成的有效方法，该方法能够准确地识别废电池中剩余的电荷的放电状态，并且在不测量每个废电池的剩余电压的情况下适当地确定放电完成 。 根据本发明的用于确定废电池完成的方法的特征在于，在将废电池浸入导电液体中之后，测量从液体产生的氢气的浓度，从而确定剩余电量的放电完成 在废电池中。

公开(公告)号：US20180215629A1

公开(公告)日：2018-08-02

申请号：US15569504

申请日：2016-04-27

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Takehide HONMA ,  Koji YAMAJI ,  Ryozo USHIO

IPC: C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: C01G53/44 ,  C01G53/006 ,  C01G53/42 ,  C01P2004/03 ,  C01P2004/39 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2006/11 ,  C01P2006/12 ,  H01M4/131 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525

Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that improves the cycling characteristic and high-temperature storability without impairing the charge/discharge capacity and the output characteristics. A nickel cobalt containing composite hydroxide is obtained by using a batch type crystallization method in which a raw material aqueous solution that includes Ni, Co and Mg is supplied in an inert atmosphere to a reaction aqueous solution that is controlled so that the temperature is within the range 45° C. to 55° C., the pH value is within the range 10.8 to 11.8 at a reference liquid temperature of 25° C., and the ammonium-ion concentration is within the range 8 g/L to 12 g/L. An Al-coated composite hydroxide that is expressed by the general formula: Ni1-x-y-zCoxAlyMgz(OH)2 (where, 0.05≤x≤0.20, 0.01≤y≤0.06, and 0.01≤z≤0.03) is obtained by mixing a slurry that includes the nickel cobalt containing composite hydroxide with a coating aqueous solution that includes Al to form a mixed aqueous solution, and coating the secondary particles with a coating film that includes Al or an Al compound. A cathode active material that is configured so that component elements that include Al are uniformly dispersed in the secondary particles is synthesized using the Al-coated composite hydroxide as a precursor.

公开(公告)号：US20160308207A1

公开(公告)日：2016-10-20

申请号：US15038543

申请日：2015-01-22

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Mitsuru YAMAUCHI ,  Kazuomi RYOSHI ,  Shuzo OZAWA ,  Ryozo USHIO

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  C01G51/04

CPC classification number: H01M4/525 ,  C01G51/04 ,  C01G51/42 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/53 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/40 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

Abstract: Obtaining cobalt hydroxide particles having a high filling property and a high density. The cobalt hydroxide particles used as a precursor for a positive electrode active material of a non-aqueous electrolyte secondary battery, including spherical secondary particles of flocculated primary particles, wherein average aspect ratio of the secondary particles is 0.7 or more, average particle diameter is 5 to 35 μm, and a value of (d90-d10)/MV indicating a dispersion of a particle size distribution is 0.6 or less, wherein, in sectional observation of the secondary particles, a ratio (N/L) of number (N) of gaps with maximum long diameter 0.3 μm or more recognized in particles of the secondary particles with sectional long diameter 3 μm or more to sectional long diameter (L) of the secondary particles is 1.0 or less, and also, maximum long diameter of the gaps is 15% or less of sectional long diameter of the secondary particles.

Abstract translation: 获得具有高填充性和高密度的氢氧化钴颗粒。 用作非水电解质二次电池正极活性物质的前体的氢氧化钴粒子，其包含絮凝的一次粒子的球状二次粒子，二次粒子的平均长径比为0.7以上，平均粒径为5 〜35μm，表示粒径分布分散的（d90-d10）/ MV的值为0.6以下，其中，在二次粒子的截面观察中，数（N）的比（N / L） 在二次粒子的截面长径（L）为3倍以上的二次粒子的粒子中，最大长径为0.3μm以上的间隙为1.0以下，间隙的最大长径为 为二次粒子的截面长径的15％以下。