摘要:
In an alkaline battery including a cathode mixture including gamma-manganese dioxide and lambda-manganese dioxide, an anode, and an alkaline electrolyte, the weight ratio of the lambda-manganese dioxide to the gamma-manganese dioxide is set to 0.5/100 to 4.5/100, and the average particle size of the lambda-manganese dioxide is set to 3 to 10 μm. An alkaline battery excellent in high-load discharge performance without decline in low-load discharge performance is provided.
摘要:
A positive electrode active material for a non-aqueous electrolyte secondary battery, including a lithium nickel composite oxide, is produced by baking a nickel hydroxide having a mean primary particle size of 1 to 5 μm and a DBP absorption amount of 10 to 30 mL/100 g and a lithium compound in an oxidizing atmosphere. This lithium nickel composite oxide is excellent in packing characteristics and power characteristics (particularly high-rate characteristics), and useful as a positive electrode active material of a non-aqueous electrolyte secondary battery.
摘要:
A positive electrode active material, which gives a non-aqueous electrolyte secondary battery capable of high input/output where resistance due to a battery reaction in a low temperature environment is suppressed, is produced by a method comprising: (a)providing a nickel hydroxide which is represented by the general formula Ni1−(x+y)CoxMy(OH)2, (b)heating the nickel hydroxide at a temperature not lower than 600° C. and not higher than 1000° C. to produce a nickel oxide which is represented by the general formula Ni1−(x+y)CoxMyO; and (c)mixing the nickel oxide and a lithium compound to obtain a mixture and heating the mixture at a temperature not lower than 700° C. and not higher than 850° C. to produce a lithium-containing composite oxide which is represented by the general formula LiNi1−(x+y)CoxMyO2, where 0.1≦x≦0.35 and 0.03≦y≦0.2 are satisfied and M is at least one selected from the group consisting of Al, Ti and Sn.
摘要翻译:通过以下方法制造正极活性物质,该正极活性物质通过以下方法制备能够抑制由于电池反应在低温环境中引起的电阻而具有高输入/输出能力的非水电解质二次电池:(a)提供氢氧化镍 其由下列通式表示:Ni 1 - (x + y)2(x)y(x)y(OH)2&lt; >,(b)在不低于600℃且不高于1000℃的温度下加热氢氧化镍以产生由通式Ni 1-(x + y)表示的氧化镍, Co x;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 和(c)将氧化镍和锂化合物混合以获得混合物,并在不低于700℃且不高于850℃的温度下加热该混合物,以制备由下式表示的含锂复合氧化物: 通式为LiNi 1 - (x + y)2 O x O 2 O 2,其中0.1 <= x <= 0.35和0.03 <= y <= 0.2,M为选自Al,Ti和Sn中的至少一种。
摘要:
At the time of synthesis of lithium nickelate, by adding a firing aid to material to be fired, crystal growth is promoted at a temperature that is lower than a firing temperature necessary for obtaining desired crystal growth of lithium nickelate, and substitution of elements that contribute to structural stability in crystals is promoted. Furthermore, distortion of crystal or loss of oxygen at the time of synthesis is suppressed. Thus, a lithium ion secondary battery having excellent charge and discharge characteristics and cycling characteristics can be provided.
摘要:
A positive electrode active material for a non-aqueous electrolyte secondary battery including a lithium-containing transition metal oxide having a closest-packed cubic structure of oxygen, the lithium-containing transition metal oxide having a composition represented by the formula (1): Li[Lip(NixMnyCoz)1-p]O2, where x, y, and z represent element contents of nickel, manganese, and cobalt, respectively, and satisfies 0.2+y≦x≦0.7, 0.15≦y, 0.05≦z, x+y+z=1, and 0≦p≦0.1.
摘要翻译:1.一种非水电解质二次电池用正极活性物质,其特征在于,包括具有最密堆积立方结构的氧的含锂过渡金属氧化物,所述含锂过渡金属氧化物具有式(1)表示的组成:Li [Lip(NixMnyCoz)1-p] O 2,其中x,y和z分别表示镍,锰和钴的元素含量,满足0.2 + y&nlE; x&nlE; 0.7,0.15&nlE; y,0.05& ,x + y + z = 1,0&nlE; p&nlE; 0.1。
摘要:
A method for producing a lithium-containing transition metal oxide represented by the general formula: Li[Lix(NiaM1−a)1−x]O2 where M is metal other than Li and Ni, 0≦x, and 0
摘要翻译:由Li [Lix(NiaM1-a)1-x] O 2表示的含锂过渡金属氧化物的制造方法,其中M是不同于Li和Ni的金属,0&lt; 1E * x和0
摘要:
In an alkaline battery including a cathode mixture including gamma-manganese dioxide and lambda-manganese dioxide, an anode, and an alkaline electrolyte, the weight ratio of the lambda-manganese dioxide to the gamma-manganese dioxide is set to 0.5/100 to 4.5/100, and the average particle size of the lambda-manganese dioxide is set to 3 to 10 μm. An alkaline battery excellent in high-load discharge performance without decline in low-load discharge performance is provided.
摘要:
To improve high temperature storage characteristic of a non-aqueous electrolyte secondary battery suitable for high input/output application, the structure of a positive electrode active material is optimized. The non-aqueous electrolyte secondary battery includes a positive electrode; a negative electrode; a separator interposed between the positive and negative electrodes; and a non-aqueous electrolyte. The positive electrode active material includes secondary particles, each formed of an aggregate of primary particles. A value (VPr) defined by the formula: VPr=(1−C/D)/(A2×B3) is not less than 0.0005 and not greater than 0.04, where an average particle size of the primary particles is A μm, an average particle size of the positive electrode active material is B μm, a tap density of the positive electrode active material is C g/ml, and a true specific gravity of the positive electrode active material is D g/ml.
摘要翻译:为了提高适用于高输入/输出应用的非水电解质二次电池的高温储存特性,优化了正极活性物质的结构。 非水电解质二次电池包括正极; 负极; 插入在正极和负极之间的隔膜; 和非水电解质。 正极活性物质包括由一次粒子的聚集体形成的二次粒子。 由VPr =(1-C / D)/(A2×B3)定义的值(VPr)不小于0.0005且不大于0.04,其中初级粒子的平均粒径为Aμm, 正极活性物质的平均粒径为Bμm,正极活性物质的振实密度为C g / ml,正极活性物质的真比例为D g / ml。
摘要:
The present invention discloses a method for producing a positive electrode active material for a lithium secondary battery constituted by a lithium-nickel-cobalt-manganese complex oxide with a lamellar structure, the method including: (1) a step of preparing a starting source material for producing the complex oxide including a lithium supply source, a nickel supply source, a cobalt supply source, and a manganese supply source; (2) a step of pre-firing the starting source material by heating at a pre-firing temperature that has been set to a temperature lower than 800° C. and higher than a melting temperature of the lithium supply source; and (3) a step of firing the pre-fired material obtained in the pre-firing step by raising a temperature to a temperature range higher than the pre-firing temperature.
摘要:
A method of evaluating a positive electrode active material has a density ratio-determining step of determining a ratio of an apparent density Da of the positive electrode active material to a theoretical density Db of the positive electrode active material. For example, when the positive electrode active material contains no closed space in the positive electrode active material, such as closed pores of the positive electrode active material, the ratio (Da/Db) of the apparent density Da of the positive electrode active material to the theoretical density Db of the positive electrode active material will be a value close to 1; however, the more the closed space such as the closed pores exists in the positive electrode active material, the smaller the ratio (Da/Db). Thus, the ratio (Da/Db) can serve as an indicator for measuring the degree of density of the positive electrode active material.