POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY
    1.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY 审中-公开
    正极电极活性材料和锂二次电池

    公开(公告)号:US20100330429A1

    公开(公告)日:2010-12-30

    申请号:US12819465

    申请日:2010-06-21

    IPC分类号: H01M4/50 H01M4/90

    摘要: A positive electrode active material having an average from 1 μm or lager to smaller than 5 μm and containing a large number of crystal grains being composed of lithium manganate of spinel structure containing lithium and manganese as constituent elements, whose crystallite size is 500 to 1,500 nm in powder X-ray diffraction pattern, and whose value of a lattice strain (η) of 0.05×10−3 to 0.9×10−3 in powder X-ray diffraction pattern, and whose D50/DBET ratio is 1 to 4 wherein the D50 (μm) is the median diameter of the positive electrode active material and the DBET (μm) is calculated from the BET specific surface area by using the following general formula (1). DBET=6/(d×S)  (1) [Wherein d is the true density (g/cm3) of the positive electrode active material powder and S is BET specific surface area (m2/g) in the general formula (1).]

    摘要翻译: 平均1μm以上且小于5μm的正极活性物质,其含有大量的结晶粒子,所述晶体由以锂和锰为构成元素的尖晶石结构的锰酸锂构成,微晶尺寸为500〜1500nm 在粉末X射线衍射图中,其粉末X射线衍射图中的晶格应变值(&egr)为0.05×10 -3〜0.9×10 -3,D50 / DBET比为1〜4,其中 D50(μm)是正极活性物质的中值粒径,使用以下通式(1)从BET比表面积算出DBET(μm)。 DBET = 6 /(d×S)(1)其中,d为正极活性物质粉末的真密度(g / cm 3),S为通式(1)中的BET比表面积(m2 / g) 。]

    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY
    3.
    发明申请
    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY 有权
    压电/电化学陶瓷烧结体

    公开(公告)号:US20110210281A1

    公开(公告)日:2011-09-01

    申请号:US12965947

    申请日:2010-12-13

    IPC分类号: H01L41/187

    摘要: A piezoelectric/electrostrictive ceramic sintered body has a microstructure in which a matrix phase and an additional material phase having different compositions coexist and the additional material phase is dispersed in the matrix phase. A residual strain ratio of the additional material phase alone is larger than a residual strain ratio of the matrix phase alone. The matrix phase and the additional material phase have a composition in which a Mn compound containing Mn atoms of 0 parts by mole or more and 3 parts by mole or less and a Ba compound containing Ba atoms of 0 parts by mole or more and 1 part by mole or less are contained in a composite of 100 parts by mole represented by a general formula {Liy(Na1-xKx)1-y}a(Nb1-z-wTazSbw)O3, where a, x, y, z and w satisfy 0.9≦a≦1.2, 0.2≦x≦0.8, 0.0≦y≦0.2, 0≦z≦0.5 and 0≦w≦0.1, respectively.

    摘要翻译: 压电/电致伸缩陶瓷烧结体具有其中基体相和具有不同组成的附加材料相共存并且附加材料相分散在基体相中的微结构。 单独的附加材料相的残余应变比大于单独的基质相的残余应变比。 基体相和附加材料相的组成为:含有Mn原子的Mn化合物为0份摩尔以上且3份以下,Ba原子的Ba化合物为0份以上,1份以上 (Nb 1-x K x)1-y} a(Nb 1-z-w T z S b w)O 3表示的100份摩尔的复合物,其中a,x,y,z和w 分别满足0.9≦̸ a≦̸ 1.2,0.2≦̸ x≦̸ 0.8,0.0≦̸ y≦̸ 0.2,0& nlE; z≦̸ 0.5和0< nEE; w≦̸ 0.1。

    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY
    5.
    发明申请
    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY 有权
    压电/电化学陶瓷烧结体

    公开(公告)号:US20110006244A1

    公开(公告)日:2011-01-13

    申请号:US12830625

    申请日:2010-07-06

    IPC分类号: H01L41/18

    摘要: A piezoelectric/electrostrictive ceramic sintered body has a microstructure in which a matrix phase and an additional material phase having different compositions coexist and the additional material phase is dispersed in the matrix phase. A residual strain ratio of the additional material phase alone is larger than a residual strain ratio of the matrix phase alone. The matrix phase and the additional material phase have a composition in which a Mn compound containing Mn atoms of 0 parts by mol or more and 3 parts by mol or less and a Sr compound containing Sr atoms of 0 parts by mol or more and 1 part by mol or less are contained in a composite of 100 parts by mol represented by a general formula {Liy(Na1-xKx)1-y}a(Nb1-z-wTazSbw)O3, where a, x, y, z and w satisfy 0.9≦a≦1.2, 0.2≦x≦0.8, 0.0≦y≦0.2, 0≦z≦0.5 and 0≦w≦0.1, respectively.

    摘要翻译: 压电/电致伸缩陶瓷烧结体具有其中基体相和具有不同组成的附加材料相共存并且附加材料相分散在基体相中的微结构。 单独的附加材料相的残余应变比大于单独的基质相的残余应变比。 基体相和附加材料相具有Mn含量为0摩尔%以上且3摩尔份以下的Mn化合物和Sr原子数为0摩尔份以上的Sr化合物和1份 以上,通式{Liy(Na1-xKx)1-y} a(Nb1-z-wTazSbw)O3表示的100份摩尔的复合物中含有1摩尔以下,其中a,x,y,z和w 分别满足0.9≦̸ a≦̸ 1.2,0.2≦̸ x≦̸ 0.8,0.0& nlE; y≦̸ 0.2,0& nlE; z≦̸ 0.5和0< nEE; w≦̸ 0.1。

    Method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material
    10.
    发明授权
    Method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material 有权
    制造(Li,Na,K)(Nb,Ta)O3型压电材料的方法

    公开(公告)号:US08124047B2

    公开(公告)日:2012-02-28

    申请号:US11958636

    申请日:2007-12-18

    IPC分类号: C01G33/00 C04B35/468

    摘要: A method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material having an improved relative dielectric constant and an electric-field-induced strain is provided. The method is a process in which a formed body of powder particles constituted of a composition of (Li, Na, K)(Nb, Ta)O3 is fired to produce the (Li, Na, K)(Nb, Ta)O3 type piezoelectric material, and a constant temperature is kept in a range of 850 to 1000° C. for a constant time before heating to a firing temperature.

    摘要翻译: 提供了具有改善的相对介电常数和电场诱导应变的(Li,Na,K)(Nb,Ta)O3型压电材料的制造方法。 该方法是将由(Li,Na,K)(Nb,Ta)O 3的组成构成的粉末粒子的成形体烧成以制造(Li,Na,K)(Nb,Ta)O 3型 压电材料,并将恒温恒定时间保持在850〜1000℃的范围内,再加热至烧成温度。