Lithium titanate and method of forming the same
    43.
    发明授权
    Lithium titanate and method of forming the same 失效
    钛酸锂及其形成方法

    公开(公告)号:US07541016B2

    公开(公告)日:2009-06-02

    申请号:US11462520

    申请日:2006-08-04

    Abstract: A lithium titanate has the following formula: Li4Ti5O12−x wherein x is greater than 0. The lithium titanate is formed by providing a mixture of titanium dioxide and a lithium-based component. The mixture is sintered in a gaseous atmosphere comprising a reducing agent to form the lithium titanate having the above formula. A lithium-based cell includes an electrolyte, an anode, and a cathode, with at least one of the anode and the cathode comprising the lithium titanate having the above formula. The lithium titanate is deficient of oxygen, which increases electronic conductivity of the lithium titanate by at least three orders over electronic conductivity of a stoichiometric lithium titanate, while avoiding loss of reversible electric power-generating capacity that typically occurs when doping is used to replace titanium in the lithium titanate with atoms that provide higher electronic conductivity.

    Abstract translation: 钛酸锂具有以下公式:<?in-line-formula description =“In-line formula”end =“lead”?> Li4Ti5O12-x <?in-line-formula description =“In-line Formulas”end = “尾”→其中x大于0.钛酸锂通过提供二氧化钛和锂基组分的混合物而形成。 将混合物在包含还原剂的气态气氛中烧结以形成具有上式的钛酸锂。 锂基电池包括电解质,阳极和阴极,阳极和阴极中的至少一个包含具有上式的钛酸锂。 钛酸锂缺乏氧,这使得钛酸锂的电子传导性比化学计量的钛酸锂的电子导电性提高了至少三倍,同时避免了当掺杂用于替代钛时典型地发生的可逆发电能力的损失 在具有提供更高电导率的原子的钛酸锂中。

    Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites
    44.
    发明申请
    Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites 有权
    生产纳米级石墨烯和无机血小板及其纳米复合材料的方法

    公开(公告)号:US20080206124A1

    公开(公告)日:2008-08-28

    申请号:US11709274

    申请日:2007-02-22

    Abstract: Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

    Abstract translation: 公开了一种剥离层状材料(例如石墨和氧化石墨)以产生厚度小于100nm,通常小于10nm,通常在0.34nm和1.02nm之间的纳米级片晶的方法。 该方法包括:(a)在高于卤素的熔点或升华点的第一温度下以足够的蒸汽压将粉末形式的层状材料经受卤素蒸气,持续足以引起卤素分子 穿透层状材料的层间空间,形成稳定的卤素插层化合物; 和(b)在高于卤素沸点的第二温度下加热卤素插层的化合物,使得驻留在层间空间中的卤素原子或分子剥离层状材料以产生血小板。 或者,步骤(a)不是加热,而是将卤素插入化合物分散在液体介质中的步骤,该液体介质经过超声波处理以使卤素插层化合物剥离以产生分散在液体介质中的血小板 。 可以容易地捕获和重新使用卤素,从而显着降低卤素对环境的影响。 该方法还可以包括将血小板分散在聚合物或单体溶液或悬浮液中作为前体步骤的纳米复合制备的步骤。

    Fermentative process for making inorganic nanoparticles
    46.
    发明授权
    Fermentative process for making inorganic nanoparticles 有权
    制备无机纳米粒子的发酵工艺

    公开(公告)号:US07060473B2

    公开(公告)日:2006-06-13

    申请号:US11227586

    申请日:2005-09-15

    Abstract: A method for producing mixed metal oxide compounds includes the steps of: providing a supply of a metal reducing bacteria; providing a culture medium suitable for growth of the bacteria; providing a first mixed metal oxide phase comprising at least a first and a second metal, at least one of the first and second metal being reducible from a higher to a lower oxidation state by the bacteria; and, combining the bacteria, the culture medium, the first mixed metal oxide, and at least one electron donor in a reactor, wherein the bacteria reduces at least one of the first metal and the second metal from the higher to the lower oxidation state to form a second mixed metal oxide phase.

    Abstract translation: 制备混合金属氧化物的方法包括以下步骤:提供金属还原细菌; 提供适合细菌生长的培养基; 提供包含至少第一和第二金属的第一混合金属氧化物相,所述第一和第二金属中的至少一种可由细菌还原成较高至较低的氧化态; 以及在反应器中将细菌,培养基,第一混合金属氧化物和至少一种电子给体结合,其中细菌将第一金属和第二金属中的至少一种从较高的氧化态降低至较低的氧化态,至 形成第二混合金属氧化物相。

    Reprocessing method by fluoride volatility process using solid-gas separation
    47.
    发明申请
    Reprocessing method by fluoride volatility process using solid-gas separation 失效
    通过氟化物挥发过程使用固相气体分离的后处理方法

    公开(公告)号:US20060057043A1

    公开(公告)日:2006-03-16

    申请号:US11097258

    申请日:2005-04-04

    Abstract: Fluorine or a fluorine compound is subjected to a reaction with a spent oxide fuel to produce fluorides of uranium and plutonium, and the fluorides are recovered using a difference in volatility behavior. The spent oxide fuel is subjected to a reaction with an HF gas, whereby uranium, plutonium and most impurities are converted into solid fluorides having low valences or remained as oxides to inhibit volatilization thereof, and then in an F2 fluorination step, the HF fluorination product is subjected to a reaction with a fluorine gas in two stages: one at a low temperature and the other at a high temperature, whereby a certain amount of gaseous uranium and volatile impurities are separated with plutonium kept in a solid form in the first stage, and mixed fluorides of remaining uranium and plutonium are fluorinated into hexafluorides at the same time in the second stage. By such a reprocessing method, plutonium enrichment can be adjusted, uranium and plutonium can be purified, and steps are simplified as well. In addition, reactors are hard to be corroded or deteriorated.

    Abstract translation: 氟或氟化合物与废氧化物燃料进行反应以产生铀和钚的氟化物,并且使用挥发性行为的差异回收氟化物。 废氧化物燃料经受与HF气体的反应,由此将铀,钚和大多数杂质转化为低价的固体氟化物或作为氧化物保留以抑制其挥发,然后在F 2 氟化步骤中,HF氟化产物与氟气进行两个阶段的反应:一个在低温下,另一个在高温下,由此一定量的气态铀和挥发性杂质与钚保持分离 第一阶段的固体形式,剩余铀和钚的混合氟化物在第二阶段同时被氟化成六氟化物。 通过这种再处理方法,可以调节钚浓缩,可以纯化铀和钚,并简化步骤。 此外,反应堆难以腐蚀或恶化。

    Reprocessing method by fluoride volatility process using fractional distillation
    48.
    发明申请
    Reprocessing method by fluoride volatility process using fractional distillation 有权
    采用分馏法的氟化物挥发过程的后处理方法

    公开(公告)号:US20060057042A1

    公开(公告)日:2006-03-16

    申请号:US11097244

    申请日:2005-04-04

    CPC classification number: C01G43/06 C01G56/004

    Abstract: Fluorine or a fluorine compound is subjected to a reaction with a spent oxide fuel to produce fluorides of uranium and plutonium, and recovering the fluorides using a difference in volatility behavior. The method includes steps of: subjecting a mixture of UO2 and PuO2 with hydrogen fluoride mixed with hydrogen to HF-fluorinate uranium and plutonium into UF4 and PuF3; subjecting UF4 and PuF3 with a fluorine gas to F2-fluorinate uranium and plutonium into UF6 and PuF6; and fractionating UF6 and PuF6 using a difference in phase change of obtained UF6and PuF6, removing a part of UF6, and volatilizing the remaining UF6 and PuF6 at the same time. By such a reprocessing method, PuF4 hard to undergo a reaction is prevented from being formed as an intermediate fluoride, the material of a reactor is hard to be corroded, and a consumption of expensive fluorine gas is reduced.

    Abstract translation: 使氟或氟化合物与废氧化物燃料进行反应以产生铀和钚的氟化物,并且使用挥发性行为的差异回收氟化物。 该方法包括以下步骤:将UO 2和PuO 2 2的混合物与氢混合的氟化氢将氟化铀和钚氟化成UF 4, SUB&gt;和PuF 3 3; 用氟气将UF 4和PuF 3 3与氟化氢铀和钚处理成UF 6和钚, PuF 6; 并使用获得的UF 6和PuF 6 6的相变差分离分离UF 6和PuF 6,除去 UF 6的一部分,同时挥发剩余的UF 6和PuF 6 6。 通过这种再处理方法,防止难以进行反应的PuF 4作为中间体氟化物形成,反应器的材料难以腐蚀,并且昂贵的氟气的消耗降低 。

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