摘要:
A hydrogen-absorbing alloy for an alkaline storage battery with high power characteristics and excellent output power stability and a method for manufacturing the same are provided. The hydrogen-absorbing alloy for an alkaline storage battery of the invention is represented by ABn (A: LaxReyMg1-x-y, B: Nin-zTz, Re: at least one element selected from rare earth elements including Y (other than La), T: at least one element selected from Co, Mn, Zn, and Al, and z>0) and has a stoichiometric ratio n of 3.5 to 3.8, a ratio of La to Re (x/y) of 3.5 or less, at least an A5B19 type structure, and an average C axis length α of crystal lattice of 30 to 41 Å.
摘要:
To provide a hydrogen storage alloy for an alkaline battery capable of having high performance of power characteristics much more beyond the related-art range, and a production method thereof, as well as an alkaline battery by investigating the constituent ratios of the A2B7-type structure and the A5B19-type structure.The hydrogen storage alloy for an alkaline battery of the present invention includes: an element R selected from the Group IV and the rare earth elements including Y and excluding La; and an element M consisting of at least one of Co, Mn, and Zn. The hydrogen storage alloy is represented by general formula: LaαR1-α-βMgβNiγ-η-εAlηMε (wherein α, β, γ, η, ε satisfy numerical formulae: 0≦α≦0.5, 0.1≦β≦0.2, 3.7≦γ≦3.9, 0.1≦η≦0.3, 0≦ε≦0.2); and the constituent ratio of the A5B19-type structure is 40% or more in the crystal structure thereof.
摘要:
A hydrogen storage alloy used in a hydrogen storage alloy electrode 11 has a crystalline structure having a mixed phase made up of at least an A2B7 type structure and an A5B19 type structure, and a surface layer of hydrogen storage alloy particles is so formed as to have a nickel content ratio greater than that of a bulk. The ratio (X/Y) of the nickel content ratio X (% by mass) of the surface layer to the nickel content ratio Y (% by mass) of the bulk is greater than 1.0 but no more than 1.2 (1.0
摘要:
An alkaline storage battery in which an actual reaction area is not reduced after increasing a reaction area is provided. A hydrogen storage alloy negative electrode 11 of an alkaline storage battery 10 of the present invention is formed in a strip form including a long axis and a short axis, in which the ratio (A/B) of a length A (cm) of the long axis to a length B (cm) of the short axis is 20 or more and 30 or less (20≦A/B≦30), and the ratio (X/Y) of an electrolyte volume X (g) retained in the hydrogen storage alloy negative electrode 11 to an electrolyte volume Y (g) retained in a separator 13 is 0.8 or more and 1.1 or less (0.8≦X/Y≦1.1). With this arrangement, an alkaline storage battery with high output characteristics and long-term durability performance is obtained.
摘要翻译:提供了在增加反应区域之后实际反应面积不减少的碱性蓄电池。 本发明的碱性蓄电池10的储氢合金负极11形成为包括长轴和短轴的带状,其中长度A(cm)的比(A / B) 长轴至短轴的长度B(cm)为20以上且30以下(20 <= A / B <= 30),电解质体积X(g)的比(X / Y)保持 在储氢合金负极11中保持在隔膜13中的电解质容积Y(g)为0.8以上1.1以下(0.8≤X/Y≤1.1)。 通过这种布置,可以获得具有高输出特性和长期耐久性能的碱性蓄电池。
摘要:
Disclosed is a sintered nickel positive electrode that has an expanded usable range to a low charging region by using nickel hydroxide having a particular crystal structure as a main component of a positive electrode active material.In the sintered nickel positive electrode of the invention, a nickel sintered substrate is filled, through a plurality of impregnation steps, with a positive electrode active material containing nickel hydroxide (β-Ni(OH)2) as a main component. In addition, the nickel hydroxide (β-Ni(OH)2) has an integrated intensity ratio of a peak intensity in a (001) face of 1.8 or more with respect to a peak intensity in a (100) face, where the peak intensities are determined by X-ray diffraction analysis, while an integrated intensity ratio of a peak intensity in a (001) face with respect to a peak intensity in a (100) face is about 1.5 in the related art. Using the nickel hydroxide having an integrated intensity ratio of the peak intensity in the (001) face of 1.8 or more with respect to the peak intensity in the (100) face enables high-rate continuous discharge in a low charging region.
摘要:
A hydrogen storage alloy of the present invention includes component A including a rare earth element represented by Ln and magnesium and component B including elements containing at least nickel and aluminum, wherein a primary alloy phase of a hydrogen storage alloy represents an A5B19 type structure; a general formula is represented as Ln1-xMgxNiy-a-bAlaMb (wherein M represents at least one element selected from Co, Mn, and Zn; and 0.1≦x≦0.2, 3.6≦y≦3.9, 0.1≦a≦0.2, and 0≦b≦0.1); a rare earth element Ln includes maximally two elements containing at least La; and absorption hydrogen equilibrium pressure (Pa) is 0.03-0.17 MPa when the hydrogen amount absorbed in the hydrogen storage alloy (H/M (atomic ratio)) at 40° C. is 0.5.
摘要翻译:本发明的储氢合金包括由Ln表示的稀土元素和镁构成的成分A和包含至少含有镍和铝的元素的成分B,其中,储氢合金的一次合金相为A5B19型结构; 通式表示为Ln1-xMgxNiy-a-bAlaMb(其中M表示选自Co,Mn和Zn中的至少一种元素;以及0.1 <= x <=0.2,3.6≤y≤3.9,0.1< a <= 0.2,0 <= b <= 0.1); 稀土元素Ln包括最多含有至少两个La元素; 当在储氢合金中吸收的氢量(H / M(原子比))为40℃时,吸收氢平衡压力(Pa)为0.03-0.17MPa。
摘要:
A hydrogen storage alloy used in a hydrogen storage alloy electrode 11 has a crystalline structure having a mixed phase made up of at least an A2B7 type structure and an A5B19 type structure, and a surface layer of hydrogen storage alloy particles is so formed as to have a nickel content ratio greater than that of a bulk. The ratio (X/Y) of the nickel content ratio X (% by mass) of the surface layer to the nickel content ratio Y (% by mass) of the bulk is greater than 1.0 but no more than 1.2 (1.0
摘要:
A hydrogen-absorbing alloy for an alkaline storage battery with high power characteristics and excellent output power stability and a method for manufacturing the same are provided. The hydrogen-absorbing alloy for an alkaline storage battery of the invention is represented by ABn (A: LaxReyMg1-x-y, B: Nin-zTz, Re: at least one element selected from rare earth elements including Y (other than La), T: at least one element selected from Co, Mn, Zn, and Al, and z>0) and has a stoichiometric ratio n of 3.5 to 3.8, a ratio of La to Re (x/y) of 3.5 or less, at least an A5B19 type structure, and an average C axis length α of crystal lattice of 30 to 41 Å.
摘要:
An alkaline storage battery in which an actual reaction area is not reduced after increasing a reaction area is provided. A hydrogen storage alloy negative electrode 11 of an alkaline storage battery 10 of the present invention is formed in a strip form including a long axis and a short axis, in which the ratio (A/B) of a length A (cm) of the long axis to a length B (cm) of the short axis is 20 or more and 30 or less (20≦A/B≦30), and the ratio (X/Y) of an electrolyte volume X (g) retained in the hydrogen storage alloy negative electrode 11 to an electrolyte volume Y (g) retained in a separator 13 is 0.8 or more and 1.1 or less (0.8≦X/Y≦1.1). With this arrangement, an alkaline storage battery with high output characteristics and long-term durability performance is obtained.
摘要翻译:提供了在增加反应区域之后实际反应面积不减少的碱性蓄电池。 本发明的碱性蓄电池10的储氢合金负极11形成为包括长轴和短轴的带状,其中长度A(cm)的比(A / B) 长轴至短轴的长度B(cm)为20以上且30以下(20&lt; 1; A / B&nlE; 30),并且电解液体积X(g)的比例(X / Y)保留在 储氢合金负极11与保持在隔板13中的电解质容量Y(g)相差0.8以上且1.1以下(0.8≤n1E; X / Y&lt; nlE; 1.1)。 通过这种布置,可以获得具有高输出特性和长期耐久性能的碱性蓄电池。
摘要:
An alkaline storage battery has a group of spiral electrodes composed of positive and negative electrode plates spirally wound with first and second separators respectively located at the outside of the positive electrode plate and at the inside of the positive electrode plate. The weight per unit area of the first separator is greater than that of the second separator.