摘要:
An electrolytic cation exchange membrane comprises a first film made of a fluorinated polymer having cation exchange groups and a second film laminated thereon, made of a fluorinated polymer having carboxylic acid groups as its ion exchange groups and containing the following repeating units (A), (B) and (C) and having a smaller thickness and greater specific electric resistance than the first film; ##STR1## where each of X and X' is --F, --Cl or --CF.sub.3, R.sub.f is a perfluoroalkyl group having from 1 to 10 carbon atoms, M is hydrogen or an alkali metal and Y is selected from the group consisting of --CF.sub.2).sub.x, --O--CF.sub.2).sub.x, ##STR2## where each of x and y is an integer of from 0 to 10 and Z is --F or R.sub.f as defined above, provided that B/A+B+C (molar ratio) and C/A+B+C (molar ratio) are from 0.01 to 0.3 and from 0.05 to 0.5, respectively.
摘要翻译:电解阳离子交换膜包括由具有阳离子交换基团的氟化聚合物制成的第一膜和层压在其上的第二膜,由具有羧酸基的氟化聚合物作为其离子交换基团并含有以下重复单元(A),( B)和(C),并且具有比第一膜更小的厚度和更大的比电阻; (C)其中X和X'各自为-F,-Cl或-CF 3,R f为具有1至10个碳原子的全氟烷基,M(C 1 -C 6) 是氢或碱金属,Y选自-CF 2)x,-O-CF 2)x,其中x和y各自为0至10的整数,Z为-F或 只要B / A + B + C(摩尔比)和C / A + B + C(摩尔比)分别为0.01至0.3和0.05至0.5,则定义如上。
摘要:
In a process for producing an alkali metal hydroxide which comprises electrolysis of an aqueous solution of an alkali metal chloride in an electrolytic cell having an anode compartment and a cathode compartment which are partitioned by a fluorinated cation exchange membrane, the improvement which comprises a fluorinated cation exchange membrane made of a fluorinated copolymer having carboxylic acid groups as the ion exchange group and having an ion exchange capacity of 0.5 to 2.0 meq/g dry polymer and a concentration of carboxylic acid groups of 8 to 30 meq/g water absorbed by the membrane when contacted with an aqueous solution of the alkali metal hydroxide having about the same concentration of alkali metal hydroxide as that of catholyte during said electrolysis.
摘要:
A positive electrode material for a lithium secondary battery for high voltage high capacity use exhibiting high cycle durability and high safety. The positive electrode material is composed of particles having a composition represented by the general formula: LiaCobMgcAdOeFf (A is the group 6 transition element or the group 14 element, 0.90≦a≦1.10, 0.97≦b≦1.00, 0.0001≦c≦0.03, 0.0001≦d≦0.03, 1.98≦e≦2.02, 0≦f≦0.02 and 0.0001≦c+d≦0.03), and magnesium, the element A and fluorine exist uniformly in the vicinity of the surfaces of the particles.
摘要翻译:一种用于高电压高容量用途的锂二次电池用正极材料,具有高循环耐久性和高安全性。 正极材料由具有以下通式的组成的颗粒组成:LiaCobMgcAdOeFf(A为第6族过渡元素或第14族元素,0.90 <= a <= 1.10,0.97 <= b <= 1.00, = c <= 0.03,0.0001 <= d <= 0.03,1.98 <= e <= 2.02,0 <= f <0.02和0.0001 <= c + d <= 0.03)和镁,元素A和氟存在 均匀地在颗粒表面附近。
摘要:
The present invention provides a positive electrode, which has a large volume capacity density, high safety, and is excellent in the coating uniformity, the charge and discharge cyclic durability and the low-temperature properties.Further, the present invention provides a process for producing a lithium-cobalt composite oxide for a positive electrode for a lithium secondary cell, the lithium-cobalt composite oxide being represented by the formula LipCoxMyOzFa (wherein M is a transition metal element other than Co, aluminum or an alkaline earth metal element, 0.9≦p≦1.1, 0.980≦x≦1.000, 0≦y≦0.02, 1.9≦z≦2.1, x+y=1 and 0≦a≦0.02).
摘要翻译:本发明提供一种具有大体积容量密度,高安全性的正极,并且涂布均匀性,充放电循环耐久性和低温性能优异。 此外,本发明提供一种锂二次电池用正极用锂钴复合氧化物的制造方法,所述锂钴复合氧化物由式LipCoxMyOzFa(其中,M为除Co以外的过渡金属元素) 铝或碱土金属元素,0.9 <= p <= 1.1,0.980 <= x <= 1.000,0 <= y <= 0.02,1.9 <= z <= 2.1,x + y = 1和0 <= a <= 0.02)。
摘要:
It is to provide a cathode active material powder for a positive electrode for a lithium secondary battery, which has a large volume capacity density, high safety and excellent durability for charge and discharge cycles. A cathode active material powder for a lithium secondary battery characterized by comprising a first composite oxide powder represented by the formula (1) LipQxMyOzFa (wherein Q is Co or Mn, M is aluminum or an alkaline earth metal element or a transition metal element other than Q, provided that when Q is Co, 0.9≦p≦1.1, 0.980≦x≦1.000, 0≦y≦0.02, 1.9≦z≦2.1, x+y=1, and 0≦a≦0.02, and when Q is Mn, 1≦p≦1.3, x=2−y, 0≦y≦0.05, z=4, and a=0), having an average particle size D50 of from 5 to 30 μm, and having a compression breaking strength of at least 40 MPa; and a second composite oxide powder represented by the formula (2) LipNixCoyMnzNqOrFa (wherein N is aluminum or an alkaline earth metal element or a transition metal element other than Ni, Co and Mn, 0.9≦p≦1.1, 0.2≦x≦0.8, 0≦y≦0.4, 0≦z≦0.5, 0≦q≦0.05, 1.9≦r≦2.1, x+y+z+q=1, and 0≦a≦0.02), having an average particle size D50 of from 2 to 30 μm, and having a compression breaking strength less than 40 MPa; in a ratio (weight ratio) of the first composite oxide powder/the second composite oxide powder being from 95/5 to 30/70.
摘要翻译:本发明提供一种锂二次电池用正极用正极活性物质粉末,其具有容量密度大,安全性高,充放电循环优异的耐久性。 一种锂二次电池用正极活性物质粉末,其特征在于,含有式(1)表示的第一复合氧化物粉末, (其中Q是Co或Mn,M是铝或碱土金属元素或Q以外的过渡金属元素,条件是当Q 是Co,0.9 <= p <= 1.1,0.980 <= x <= 1.000,0 <= y <= 0.02,1.9 <= z <= 2.1,x + y = 1,0 <= a <= 0.02, 当Q为Mn时,平均粒度D50为5〜30μm,1≤p≤3.3,x = 2-y,0≤y≤0.05,z = 4,a = 0) 并且具有至少40MPa的压缩断裂强度; 和由式(2)表示的第二复合氧化物粉末LiNi x N x Mn x N (其中N为铝或碱土金属元素或Ni之外的过渡金属元素,Co和Mn, 0.9 <= p <= 1.1,0.2 <= x <= 0.8,0 <= y <= 0.4,0 <= z <= 0.5,0 <= q <= 0.05,1.9 <= r = 2.1,x + y + z + q = 1,0 <= a <= 0.02),平均粒径D50为2〜30μm,压缩断裂强度小于40MPa; 第一复合氧化物粉末/第二复合氧化物粉末的比例(重量比)为95/5〜30/70。
摘要:
It is to provide a cathode active material powder for a positive electrode for a lithium secondary battery, which has a large volume capacity density, high safety and excellent durability for charge and discharge cycles. A cathode active material powder for a lithium secondary battery characterized by comprising a first composite oxide powder represented by the formula (1) LipQxMyOzFa (wherein Q is Co or Mn, M is aluminum or an alkaline earth metal element or a transition metal element other than Q, provided that when Q is Co, 0.9≦p≦1.1, 0.980≦x≦1.000, 0≦y≦0.02, 1.9≦z≦2.1, x+y=1, and 0≦a≦0.02, and when Q is Mn, 1≦p≦1.3, x=2−y, 0≦y≦0.05, z=4, and a=0), having an average particle size D50 of from 5 to 30 μm, and having a compression breaking strength of at least 40 MPa; and a second composite oxide powder represented by the formula (2) LipNixCoyMnzNqOrFa (wherein N is aluminum or an alkaline earth metal element or a transition metal element other than Ni, Co and Mn, 0.9≦p≦1.1, 0.2≦x≦0.8, 0≦y≦0.4, 0≦z≦0.5, 0≦q≦0.05, 1.9≦r≦2.1, x+y+z+q=1, and 0≦a≦0.02), having an average particle size D50 of from 2 to 30 μm, and having a compression breaking strength less than 40 MPa; in a ratio (weight ratio) of the first composite oxide powder/the second composite oxide powder being from 95/5 to 30/70.
摘要翻译:本发明提供一种锂二次电池用正极用正极活性物质粉末,其具有容量密度大,安全性高,充放电循环优异的耐久性。 一种锂二次电池用正极活性物质粉末,其特征在于,含有式(1)表示的第一复合氧化物粉末, (其中Q是Co或Mn,M是铝或碱土金属元素或Q以外的过渡金属元素,条件是当Q 是Co,0.9 <= p <= 1.1,0.980 <= x <= 1.000,0 <= y <= 0.02,1.9 <= z <= 2.1,x + y = 1,0 <= a <= 0.02, 当Q为Mn时,平均粒度D50为5〜30μm,1≤p≤3.3,x = 2-y,0≤y≤0.05,z = 4,a = 0) 并且具有至少40MPa的压缩断裂强度; 和由式(2)表示的第二复合氧化物粉末LiNi x N x Mn x N (其中N为铝或碱土金属元素或Ni之外的过渡金属元素,Co和Mn, 0.9 <= p <= 1.1,0.2 <= x <= 0.8,0 <= y <= 0.4,0 <= z <= 0.5,0 <= q <= 0.05,1.9 <= r = 2.1,x + y + z + q = 1,0 <= a <= 0.02),平均粒径D50为2〜30μm,压缩断裂强度小于40MPa; 第一复合氧化物粉末/第二复合氧化物粉末的比例(重量比)为95/5〜30/70。
摘要:
To provide a process for producing a lithium-cobalt composite oxide for a positive electrode of a lithium secondary battery, which has a large volume capacity density, high safety, high charge and discharge cycle durability, high press density and high productivity.A process for producing a lithium-cobalt composite oxide represented by the formula LipCoxMyOzFa (wherein M is a transition metal element other than Co, or an alkaline earth metal element, 0.9≦p≦1.1, 0.980≦x≦1.000, 0≦y≦0.02, 1.9≦z≦2.1, x+y=1, and 0≦a≦0.02), characterized in that as a cobalt source, a mixture is used which comprises cobalt hydroxide in the form of substantially spherical secondary particles with an average particle size of from 8 to 20 μm formed by agglomeration of primary particles and tricobalt tetroxide in the form of secondary particles with an average particle size of from 2 to 10 μm formed by agglomeration of primary particles, in a cobalt atomic ratio of from 5:1 to 1:5, and firing is carried out at from 700 to 1,050° C.
摘要翻译:为了提供具有大容量密度,高安全性,高充放电循环耐久性,高压力密度和高生产率的锂二次电池正极用锂钴复合氧化物的制造方法。 一种由下式表示的锂 - 钴复合氧化物的制备方法:其中R 1,R 2,R 2, (其中M是除Co以外的过渡金属元素或碱土金属元素,0.9 <= p <= 1.1,0.980 <= x <= 1.000,0 <= y < 0.02,1.9 <= z <= 2.1,x + y = 1,0 <= a <= 0.02),其特征在于,作为钴源,使用包含基本上球形二次粒子形式的氢氧化钴的混合物 平均粒度为8〜20μm的原子粒子的原子比通过一次粒子的聚集而形成的平均粒径为2〜10μm的二次粒子的一次粒子和四氧化四铁的凝聚而形成的平均粒径为8〜 从5:1至1:5,并且在700至1050℃进行烧制。
摘要:
A positive electrode material for a lithium secondary battery for high voltage high capacity use exhibiting high cycle durability and high safety. The positive electrode material is composed of particles having a composition represented by the general formula: LiaCObMgcAdOeFf (A is the group 6 transition element or the group 14 element, 0.90≦a≦1.10, 0.97≦b≦1.00, 0.0001≦c>0.03, 0.0001≦d≦0.03, 1.98≦e≦2.02, 0≦f≦0.02 and 0.0001≦c+d≦0.03), and magnesium, the element A and fluorine exist uniformly in the vicinity of the surfaces of the particles.
摘要翻译:一种用于高电压高容量用途的锂二次电池用正极材料,具有高循环耐久性和高安全性。 正极材料由具有以下通式表示的组成的颗粒组成:其中,C 1,C 2, (A是第6族过渡元素或第14族元素,0.90 <= a <= 1.10,0.97 <= b <= 1.00 ,0.0001 <= c> 0.03,0.0001 <= d <= 0.03,1.98 <= e <= 2.02,0 <= f <0.02和0.0001 <= c + d <= 0.03)和镁,元素A和 氟在颗粒表面附近均匀地存在。
摘要:
Coagulated particles of nickel-cobalt-manganese hydroxide wherein primary particles are coagulated to form secondary particles are synthesized by allowing an aqueous solution of a nickel-cobalt-manganese salt, an aqueous solution of an alkali-metal hydroxide, and an ammonium-ion donor to react under specific conditions; and a lithium-nickel-cobalt-manganese-containing composite oxide represented by a general formula, LipNixMn1-x-yCoyO2-qFq (where 0.98≦p≦1.07, 0.3≦x≦0.5, 0.1≦y≦0.38, and 0≦q≦0.05), which is a positive electrode active material for a lithium secondary cell having a wide usable voltage range, a charge-discharge cycle durability, a high capacity and high safety, is obtained by dry-blending coagulated particles of nickel-cobalt-manganese composite oxyhydroxide formed by making an oxidant to act on the coagulated particles with a lithium salt, and firing the mixture in an oxygen-containing atmosphere.
摘要翻译:通过使镍 - 钴 - 锰盐的水溶液,碱金属氢氧化物的水溶液和铵离子给体合成,其中一次粒子凝结形成二次粒子的镍 - 钴 - 氢氧化锰的凝结颗粒合成 在特定条件下反应; 和由以下通式表示的锂镍钴钴锰复合氧化物:Li x Mn x Mn 1-xy Co Co, 其中0.98 <= p <= 1.07,0.3 <= x <= 0.5,0.1 <= y < = 0.38,0 <= q <= 0.05),其是具有宽的可用电压范围,充放电循环耐久性,高容量和高安全性的锂二次电池用正极活性物质 通过使锂化合物通过使氧化剂作用于凝固的颗粒而形成的镍 - 钴 - 锰复合羟基氧化物的混合的混合颗粒,并在含氧气氛中焙烧该混合物。
摘要:
A particulate positive electrode active material for a lithium secondary cell which satisfies high charge and discharge cyclic durability, high safety, high temperature storage properties, a high discharge average voltage, large current discharge properties, a high weight capacity density, a high volume capacity density, etc. in a well-balanced manner is provided. A particulate positive electrode active material for a lithium secondary cell, which is represented by the formula LipCoxMyOzFa (wherein M is at least one element selected from Groups 2 to 8, 13 and 14 of the Periodic Table, 0.9≦p≦1.1, 0.980≦x≦0.9999, 0.0001≦y≦0.02, 1.9≦z≦2.1, 0.9≦x+y≦1 and 0.0001≦a≦0.02), wherein fluorine atoms and element M are unevenly distributed on the particle surface, the atomic ratio of fluorine atoms to cobalt atoms (a/x) is from 0.0001 to 0.02, and in powder X-ray diffraction using CuKα-ray, the half value width of the angle of diffraction on (110) plane is from 0.06 to 0.13°, and the half value width of the angle of diffraction on (003) plane is from 0.05 to 0.12°.
摘要翻译:一种满足高充放电循环耐久性,高安全性,高温保存性,高放电平均电压,大电流放电特性,高重量容量密度,高体积容量密度的锂二次电池用微粒正极活性物质 等等。 一种用于锂二次电池的颗粒状正极活性物质,其由下式表示:其中R 1,R 2,R 2, (其中M是选自周期表第2至8,13和14族中的至少一种元素,0.9 <= p <= 1.1,0.980 <= x <= 0.9999,0.0001 <= y <= 0.02,1.9 <= z <= 2.1,0.9 <= x + y <= 1和0.0001 <= a <= 0.02),其中氟原子和元素M不均匀地分布在颗粒表面 ,氟原子与钴原子的原子比(a / x)为0.0001〜0.02,在使用CuKα射线的粉末X射线衍射中,(110)面的衍射角的半值宽度为0.06 至0.13°,(003)面上的衍射角的半值宽度为0.05〜0.12°。