摘要:
The invention provides a stable positive-electrode mixture slurry that is not subject to gelation, a positive electrode with abundant flexibility, and a lithium secondary battery with excellent battery characteristics. The slurry comprises a positive-electrode active material, a binder, and an organic solvent, the positive-electrode active material is a lithium-containing complex metal oxide represented by Formula: Lix M1yM21−yO2 (wherein 0.4≦x≦1; 0.3≦y≦1; M1 is at least one selected from Ni or Mn; and M2 is at least one selected from Co, Al, or Fe); and the binder comprises a fluorine-containing polymer represented by Composition Formula: (VDF)m(TFE)n(HFP)l (wherein VDF is a structural unit from vinylidene fluoride; TFE is a structural unit from tetrafluoroethylene; HFP is a structural unit from hexafluoropropylene; and 0.45≦m≦1; 0≦n≦0.5; and 0≦l≦0.1, and m+n+l=1).
摘要:
There is provided a lithium secondary cell having specifically excellent discharge capacity, rate characteristics and further cycle characteristics and improved incombustibility (safety). The lithium secondary cell comprises a negative electrode, a non-aqueous electrolytic solution and a positive electrode, in which an active material for the negative electrode comprises lithium titanate and the non-aqueous electrolytic solution comprises a fluorine-containing solvent.
摘要:
In the nonaqueous secondary battery of the present invention, a positive electrode mixture layer included in a positive electrode contains a lithium-containing complex oxide defined by the general formula LixM1yM2zM3vO2 (where, M1 represents at least one transition metal element selected from the group consisting of Co, Ni and Mn, M2 represents at least one metal element selected from the group consisting of Mg, Ti, Zr, Ge, Nb, Al and Sn, M3 represents an element other than Li, M1 and M2, 0.97≦x
摘要翻译:在本发明的非水二次电池中,正极中包含的正极合剂层含有通式LixM1yM2zM3vO2所定义的含锂复合氧化物(其中,M1表示选自由以下组成的组中的至少一种过渡金属元素: Co,Ni,Mn,M2表示选自Mg,Ti,Zr,Ge,Nb,Al和Sn中的至少一种金属元素,M3表示除Li以外的元素,M1和M2,0.97& 1.02,0.8&amp; nlE; y <1.02,0.002&amp; nlE; z&nlE; 0.05,0和nlE; v&nlE; 0.05),密度为3.5g / cm 3以上。 非水电解质含有含有2个以上的氰基或氰基和酯基的氟化腈化合物。
摘要:
There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.
摘要:
There is provided an electrochemical device provided with an electrolytic solution comprising (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing ether represented by the formula (1): Rf1—O—Rf2 wherein Rf1 and Rf2 are the same or different and each is a fluorine-containing alkyl group having 3 to 6 carbon atoms, (B) a cyclic carbonate, and (C) a chain carbonate being compatible with both of the fluorine-containing ether (A) and the cyclic carbonate (B), and (II) an electrolyte salt, in which the solvent (I) for dissolving an electrolyte salt comprises 30 to 60% by volume of the fluorine-containing ether (A), 3 to 40% by volume of the cyclic carbonate (B) and 10 to 67% by volume of the chain carbonate (C) based on the whole solvent (I), and when the electrochemical device is provided with such an electrolytic solution, no phase separation occurs even at low temperature, flame retardancy and heat resistance are excellent, solubility of an electrolyte salt is high, discharge capacity is large, and charge and discharge cycle characteristics are satisfactory.
摘要:
A coordinate measuring instrument in which a touch signal probe is brought into contact with a workpiece to be measured and a contour of the workpiece is measured in response to an electric signal on the basis of the aforesaid contact.The touch signal probe used in this measuring instrument comprises a first member held on a main body of the probe and a second member rotatably provided on the first member and having a contact member. The second member has a forward end constantly positioned on the rotary axis of the second member irrespective of any position of rotation of the second member.
摘要:
This invention relates to measuring instruments such as a three-dimensional measuring instrument having a device for protecting the surface of a scale provided on a guide rail for moving a measuring element support member.A scale (7) secured to one side surface of one of guide rails provided at opposite side surfaces of a bedplate (1), on which a work (18) to be measured is rested, is covered by a pair of a constant load spring. These constant load springs (8) and (8) are solidly secured at the ends at one side to shock absorbers (20) and (20) provided at the end portions of the guide rail (4) and connected at the ends at the other side to a pair of retractors (27) and (27) provided in a support (10) of a measuring element support member (9), and the constant load springs (8) and (8) can be suitably extended or wound by following movements of the measuring element support member (9), so that adhesion of oil to the surface of the scale (7) and the like can be effectively prevented, thus enabling to secure the stable measuring accuracy.
摘要:
Herein disclosed is a measuring device such as a micrometer, slide calipers, a depth gauge or a height gauge, in which a slider is so provided that it can move back and forth in the same direction of such a relatively movable portion as can move relative to a frame and that it can be fixed on said frame at any position in the forward and backward moving directions thereof, and in which there is interposed between said slider and said relatively movable portion such spring bias means as can apply its spring force to said relatively movable portion in the forward and backward moving directions of the same, whereby the measuring pressure to be applied to a test piece by said relatively movable portion can be automatically predetermined at a substantially constant level independently of the position of said relatively movable portion relative to said frame.