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    Homogeneous thermoelectric nanocomposite using core-shell nanoparticles
    81.
    发明授权
    Homogeneous thermoelectric nanocomposite using core-shell nanoparticles 有权
    使用核 - 壳纳米粒子的均匀热电纳米复合材料

    公开(公告)号：US08044292B2

    公开(公告)日：2011-10-25

    申请号：US11549203

    申请日：2006-10-13

    申请人： Qiangfeng Xiao ,  Yunfeng Lu ,  Junwei Wang ,  Minjuan Zhang

    发明人： Qiangfeng Xiao ,  Yunfeng Lu ,  Junwei Wang ,  Minjuan Zhang

    IPC分类号： H01L35/34 ,  H01L35/28

    CPC分类号： H01L35/26 ,  H01L35/16 ,  H01L35/34

    摘要： A thermoelectric material comprises core-shell particles having a core formed from a core material and a shell formed from a shell material. In representative examples, the shell material is a material showing an appreciable thermoelectric effect in bulk. The core material preferably has a lower thermal conductivity than the shell material. In representative examples, the core material is an inorganic oxide such as silica or alumina, and the shell material is a chalcogenide semiconductor such as a telluride, for example bismuth telluride. A thermoelectric material including such core-shell particles may have an improved thermoelectric figure of merit compared with a bulk sample of the shell material alone. Embodiments of the invention further include thermoelectric devices using such thermoelectric materials, and preparation techniques. The use of core-shell nanoparticles allows highly uniform nanocomposites to be formed, and embodiments of the invention also includes other materials and devices using core-shell particles.

    摘要翻译： 热电材料包括由芯材形成的芯和由壳材料形成的壳的核 - 壳颗粒。 在代表性实例中，外壳材料是显示出大量可观的热电效应的材料。 核心材料优选具有比壳材料低的热导率。 在代表性实例中，核心材料是无机氧化物如二氧化硅或氧化铝，外壳材料是硫属元素半导体，例如碲化物，例如碲化铋。 包含这种核 - 壳颗粒的热电材料与单独的壳材料的块状样品相比可以具有改进的热电品质因数。 本发明的实施例还包括使用这种热电材料的热电装置和制备技术。 使用核 - 壳纳米粒子允许形成高度均匀的纳米复合材料，本发明的实施方案还包括使用核 - 壳颗粒的其它材料和装置。

    Metal telluride nanocrystals and synthesis thereof
    82.
    发明授权
    Metal telluride nanocrystals and synthesis thereof 失效
    金属碲化物纳米晶体及其合成

    公开(公告)号：US07790137B2

    公开(公告)日：2010-09-07

    申请号：US11464265

    申请日：2006-08-14

    申请人： Qiangfeng Xiao ,  Yunfeng Lu ,  Minjuan Zhang

    发明人： Qiangfeng Xiao ,  Yunfeng Lu ,  Minjuan Zhang

    IPC分类号： C01B19/04

    CPC分类号： C01B19/007 ,  B82Y30/00 ,  C01B19/002 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/64 ,  C04B35/547 ,  C04B35/6263 ,  C04B35/6325 ,  C04B35/636 ,  C04B35/6455 ,  C04B2235/3293 ,  C04B2235/3296 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/604 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/781

    摘要： A process for synthesizing a metal telluride is provided that includes the dissolution of a metal precursor in a solvent containing a ligand to form a metal-ligand complex soluble in the solvent. The metal-ligand complex is then reacted with a telluride-containing reagent to form metal telluride domains having a mean linear dimension of from 2 to 40 nanometers. NaHTe represents a well-suited telluride reagent. A composition is provided that includes a plurality of metal telluride crystalline domains (PbTe)1-x-y(SnTe)x(Bi2Te3)y  (I) having a mean linear dimension of from 2 to 40 nanometers inclusive where x is between 0 and 1 inclusive and y is between 0 and 1 inclusive with the proviso that x+y is less than or equal to 1. Each of the metal telluride crystalline domains has a surface passivated with a saccharide moiety or a polydentate carboxylate. A densified mass having a density of greater than 95% of the theoretical density includes a plurality of lead telluride, tin telluride, bismuth telluride, or a combination thereof of domains having a mean linear dimension of from 2 to 40 nanometers inclusive that have been subjected to hot isotactic pressing.

    摘要翻译： 提供了合成金属碲化物的方法，其包括将金属前体溶解在含有配体的溶剂中以形成可溶于溶剂的金属 - 配体络合物。 然后将金属 - 配体络合物与含碲化物的试剂反应以形成平均直线尺寸为2-40纳米的金属碲化物畴。 NaHTe代表一种非常适合的碲化物试剂。 提供一种组合物，其包含多个金属碲化物晶体结构域（PbTe）1-xy（SnTe）x（Bi 2 Te 3）y（I），其平均直线尺寸为2至40纳米，其中x在0和1之间 并且y在0和1之间，其中x + y小于或等于1.每个金属碲化物结晶域具有用糖部分或多齿羧酸酯钝化的表面。 具有大于理论密度的95％的密度的致密物质包括多个引线碲化物，碲化锡，碲化铋或其具有平均线性尺寸为2至40纳米的畴的组合，其已经经受 到热等压挤压。

    CORE-SHELL NANOPARTICLES AND PROCESS FOR PRODUCING THE SAME
    83.
    发明申请
    CORE-SHELL NANOPARTICLES AND PROCESS FOR PRODUCING THE SAME 有权
    核壳纳米粒子及其制造方法

    公开(公告)号：US20100215852A1

    公开(公告)日：2010-08-26

    申请号：US12391543

    申请日：2009-02-24

    申请人： Michael Paul Rowe ,  Minjuan Zhang

    发明人： Michael Paul Rowe ,  Minjuan Zhang

    IPC分类号： B01J13/04

    CPC分类号： B01J13/04 ,  B01J13/02

    摘要： A process for forming thermoelectric nanoparticles includes the steps of a) forming a core material micro-emulsion, b) adding at least one shell material to the core material micro-emulsion forming composite thermoelectric nanoparticles having a core and shell structure.

    摘要翻译： 形成热电纳米颗粒的方法包括以下步骤：a）形成芯材微乳液，b）将至少一种壳材料加入到具有核和壳结构的芯材微乳液形成复合热电纳米颗粒中。

    METHOD FOR CONTROL OF SHAPE AND SIZE OF PB-CHALCOGENIDE NANOPARTICLES
    85.
    发明申请
    METHOD FOR CONTROL OF SHAPE AND SIZE OF PB-CHALCOGENIDE NANOPARTICLES 有权
    用于控制PB-氯化碳纳米粒子的形状和尺寸的方法

    公开(公告)号：US20080295762A1

    公开(公告)日：2008-12-04

    申请号：US11755522

    申请日：2007-05-30

    申请人： Taleb Mokari ,  Minjuan Zhang ,  Peidong Yang

    发明人： Taleb Mokari ,  Minjuan Zhang ,  Peidong Yang

    IPC分类号： C30B19/00

    CPC分类号： C30B9/08 ,  C30B29/46 ,  C30B29/60 ,  Y10S977/773 ,  Y10S977/811

    摘要： Disclosed is a method for producing, controlling the shape and size oft Pb-chalcogenide nanoparticles. The method includes preparing a Pb (Pb) precursor containing Pb and a carboxylic acid dissolved in a hydrocarbon solution and preparing a chalcogen element precursor containing a chalcogen element dissolved in a hydrocarbon solution. The amount of Pb and chalcogen in the respective precursor affords for a predetermined Pb:chalcogen element ratio to be present when the Pb precursor is mixed with the chalcogen element precursor. The Pb precursor is mixed with the chalcogen element precursor to form a Pb-chalcogen mixture in such a manner that Pb-chalcogenide nanoparticle nucleation does not occur. A nucleation and growth solution containing a surfactant is also prepared by heating the solution to a nucleation temperature sufficient to nucleate nanoparticles when the Pb-chalcogen element mixture is added. Upon injection of the Pb-chalcogen element mixture into the heated nucleation and growth solution, Pb-chalcogenide nanoparticles nucleate and a Pb-chalcogenide nanoparticle solution is formed, which is thereafter cooled to a growth temperature that is below the nucleation temperature. The Pb-chalcogenide nanoparticle solution at the growth temperature is held at the growth temperature for a predetermined time period such that a desired nanoparticle size is obtained. The Pb:chalcogen element ratio and a surfactant in the nucleation and growth solution can control the shape of the Pb-chalcogenide nanoparticles. The nucleation temperature, the growth temperature, the time at which the Pb-chalcogenide nanoparticle solution is held at the growth temperature and a surfactant can control the size of the Pb-chalcogenide nanoparticles.

    摘要翻译： 公开了一种用于生产，控制Pb-硫族化物纳米颗粒的形状和尺寸的方法。 该方法包括制备含有溶解在烃溶液中的Pb和羧酸的Pb（Pb）前体，并制备含有溶解在烃溶液中的硫属元素的硫属元素前体。 当Pb前体与硫属元素前体混合时，各个前体中的Pb和硫族元素的量提供预定的Pb：硫属元素比例。 将Pb前体与硫属元素前体混合以形成不产生Pb-硫属元素化物纳米粒子成核的方式形成Pb-硫族元素混合物。 含有表面活性剂的成核和生长溶液也可以通过将溶液加热至加成Pb-硫属元素混合物时足以使纳米颗粒成核的成核温度来制备。 在将Pb-硫属元素混合物注入加热的成核和生长溶液中时，Pb-硫族化物纳米颗粒成核，形成Pb-硫族化物纳米颗粒溶液，然后将其冷却至低于成核温度的生长温度。 生长温度下的Pb-硫族化物纳米颗粒溶液在生长温度下保持预定时间，从而获得所需的纳米颗粒尺寸。 成核和生长溶液中的Pb：硫属元素比例和表面活性剂可以控制Pb-硫族化物纳米颗粒的形状。 成核温度，生长温度，Pb-硫族化物纳米颗粒溶液在生长温度下保持的时间和表面活性剂可以控制Pb-硫族化物纳米颗粒的尺寸。