摘要:
A battery capable of improving the energy density and improving the cycle characteristics is provided. The battery includes a cathode, an anode arranged opposite of the cathode and an electrolyte in between the cathode and the anode. The amount of cathode active material and the amount of anode active material is such that the open circuit battery voltage is within the range from 4.25 volts to 6.00 volts, the electrolyte contains an electrolytic solution and a polymer containing vinylidene fluoride, and the cathode contains lithium complex oxides.
摘要:
A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by the following equation (1), as a positive electrode active material, and a charge capacity (vs lithium metal) per unit volume during a charge and discharge of a first cycle is larger in the second lithium composite oxide compared to the first lithium composite oxide, and a discharge voltage (vs lithium metal) during the charge and discharge of the first cycle is lower in the second lithium composite oxide compared to the first lithium composite oxide, Li1+a(MnbCocNi1-b-c)1-aO2 . . . (1), where a, b, and c satisfy relationships of 0
摘要:
A positive active material is composed of particles of a compound oxide of lithium and a transition metal. This compound oxide has a layered structure. A coating layer of an inorganic compound and a carbonaceous material is formed on at least part of each surface of the particles. The inorganic compound is a lithium compound. The weight ratio of the inorganic compound to the carbonaceous material ranges between 99:1 and 60:40. The weight ratio of the particles to the coating layers ranges between 98:2 and 70:30.
摘要:
Disclosed herein is a positive electrode active material wherein at least one metallic element M1 different from a principal transition metal element A is present at least at part of a surface of a lithium-containing transition metal oxide containing the principal transition metal element A, and, further, a compound of a metallic element M2 different from the metallic element M1 is present in a coating manner or in the vicinity of the lithium-containing transition metal oxide.
摘要:
A positive electrode active material includes a lithium complex oxide particle, and a coating layer formed on at least a part of the surface of the lithium complex oxide particle. The lithium complex oxide particle is a lithium complex oxide particle composed mainly of nickel. The coating layer contains an oxo acid and/or an oxo acid compound, an acidity of the surface of the lithium complex oxide particle composed mainly of nickel is increased by the coating layer. The acidity is determined based on a pH of a supernatant of water in a state where after 1.0 part by weight of the lithium complex oxide particle composed mainly of nickel and having a coating layer formed thereon is dispersed in 50 parts by weight of water. The lithium complex oxide particle sediments, and the pH is less than 8.0.
摘要:
A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of a complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
摘要:
A positive active material including a compound expressed by a general formula LimMxM′yM″zO2 (here, M designates at least one kind of element selected from Co, Ni and Mn, M′ designates at least one kind of element selected from Al, Cr, V, Fe, Cu, Zn, Sn, Ti, Mg, Sr, B, Ga, In, Si and Ge, and M″ designates at least one kind of element selected from Mg, Ca, B and Ga. Further, x is designated by an expression of 0.9≦x
摘要翻译:包含由通式表示的化合物的正极活性物质M M 1 M“M”Z“ (这里,M表示选自Co,Ni和Mn中的至少一种元素,M'表示选自Al,Cr,V,Fe,Cu中的至少一种元素, Zn,Sn,Ti,Mg,Sr,B,Ga,In,Si和Ge中的至少一种元素,M“表示选自Mg,Ca,B和Ga中的至少一种元素。 0.9 <= x <1,y表示0.001 <= y <= 0.5,z表示为0 <= z <= 0.5,m表示为0.5≤m) 和由通式Li 2 O 3 O 2(t)表示的锂锰氧化物(这里, s的值由0.9 <= s表示,t的值位于由0.01 <= t <= 0.5表示的范围内,Ma表示Fe,Co,Ni,Cu,Zn之间的一个或多个元素 ,Al,Sn,Cr,V,Ti,Mg,Ca,Sr,B,Ga,In,Si和Ge) 实现了在过充电操作时大容量和电池温度上升的抑制。
摘要:
A cathode active material and non-aqueous electrolyte secondary battery. The non-aqueous electrolyte secondary battery includes a positive electrode and a negative electrode which are electrochemically doped and dedoped with lithium; and an electrolyte disposed between the positive electrode and the negative electrode. The positive electrode contains a cathode active material including a mixture of: a first cathode active material represented by a general formula: LitCoMsO2 where M represents a metal, 0≦s≦0.03, and 0.05≦t≦1.15; and a second cathode active material represented by a general formula: LixNi(1-y-z)CoyMnzAaO2 where A represents a metal, 0.05≦x≦1.15, 0.15≦y+z≦0.70, 0.05≦z≦0.40, and 0≦a≦0.10.
摘要翻译:阴极活性物质和非水电解质二次电池。 非水电解质二次电池包括电化学掺杂并脱锂的正极和负极; 以及设置在正极和负极之间的电解质。 正极含有阴极活性物质,该阴极活性物质包含以下通式的混合物:由以下通式表示的第一阴极活性物质:Li sub> >其中M表示金属,0 <= s <= 0.03,而0.05 <= t <= 1.15; 和由以下通式表示的第二阴极活性材料:Li x Ni(1-yz)Mn x Mn z 其中A表示金属,0.05 <= x <= 1.15,0.15 <= y + z <= 0.70,0.05 <= z < 0.40,0 <= a <= 0.10。
摘要:
A non-aqueous electrolyte cell having improved cyclic characteristics at elevated temperatures. The non-aqueous electrolyte cell includes a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode contains, as a positive electrode active material, a lithium transition metal composite oxide represented by the general formula LiCoxAyBzO2 where A denotes at least one selected from the group consisting of Al, Cr, V, Mn and Fe, B denotes at least one selected from the group consisting of Mg and Ca and x, y and z are such that 0.9≦x
摘要翻译:在高温下具有改善的循环特性的非水电解质电池。 非水电解质电池包括正极,负极和非水电解质。 正极含有由通式LiCoxAyBzO2表示的锂过渡金属复合氧化物作为正极活性物质,其中A表示选自Al,Cr,V,Mn和Fe中的至少一种,B表示至少 选自Mg和Ca,x,y和z中的一个选自0.9 <= x <1,0.001 <= y <= 0.05和0.001 <= Z&LE; 0.05。