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14 条记录 (耗时 0.034 秒)

    Method of preparation of carbon materials for use as electrodes in rechargeable batteries
    1.
    发明授权
    Method of preparation of carbon materials for use as electrodes in rechargeable batteries 失效
    用作可充电电池中的电极的碳材料的制备方法

    公开(公告)号：US5882621A

    公开(公告)日：1999-03-16

    申请号：US853971

    申请日：1997-05-09

    申请人： Narayan Doddapaneni ,  James C. F. Wang ,  Robert W. Crocker ,  David Ingersoll ,  David W. Firsich

    发明人： Narayan Doddapaneni ,  James C. F. Wang ,  Robert W. Crocker ,  David Ingersoll ,  David W. Firsich

    IPC分类号： C01B31/02 ,  C04B35/524 ,  D01F11/12 ,  H01G9/00 ,  H01G9/155 ,  H01M4/02 ,  H01M4/58 ,  H01M4/587 ,  H01M4/04

    CPC分类号： H01G9/155 ,  C01B31/02 ,  C04B35/524 ,  D01F11/129 ,  H01M4/587 ,  H01M2004/021 ,  Y02E60/13

    摘要： A method of producing carbon materials for use as electrodes in rechargeable batteries. Electrodes prepared from these carbon materials exhibit intercalation efficiencies of .apprxeq.80% for lithium, low irreversible loss of lithium, long cycle life, are capable of sustaining a high rates of discharge and are cheap and easy to manufacture. The method comprises a novel two-step stabilization process in which polymeric precursor materials are stabilized by first heating in an inert atmosphere and subsequently heating in air. During the stabilization process, the polymeric precursor material can be agitated to reduce particle fusion and promote mass transfer of oxygen and water vapor. The stabilized, polymeric precursor materials can then be converted to a synthetic carbon, suitable for fabricating electrodes for use in rechargeable batteries, by heating to a high temperature in a flowing inert atmosphere.

    摘要翻译： 一种生产用作可再充电电池中的电极的碳材料的方法。 由这些碳材料制备的电极表现出锂的APPROX 80％的嵌入效率，锂的不可逆损耗低，循环寿命长，能够维持高放电率，而且便宜且易于制造。 该方法包括一种新的两步稳定方法，其中聚合物前体材料通过在惰性气氛中首先加热并随后在空气中加热而稳定化。 在稳定化过程中，可以搅拌聚合物前体材料以减少颗粒熔融并促进氧气和水蒸汽的传质。 然后，通过在流动的惰性气氛中加热到高温，稳定化的聚合物前体材料可以转化为合成碳，适合于制造用于可再充电电池的电极。

    Electrochemical cell having improved active life
    5.
    发明授权
    Electrochemical cell having improved active life 失效
    电化学电池具有改善的活性寿命

    公开(公告)号：US4698283A

    公开(公告)日：1987-10-06

    申请号：US911578

    申请日：1986-09-25

    申请人： Narayan Doddapaneni

    发明人： Narayan Doddapaneni

    IPC分类号： H01M4/90 ,  H01M6/14 ,  H01M6/38 ,  H01M4/36

    CPC分类号： H01M4/9008 ,  H01M6/14 ,  H01M6/38

    摘要： Anode passivation and premature cell failure associated with anode deterioration due to corrosion has been greatly reduced in Li/SOCl.sub.2 cells by the addition of small amounts of tetracarboxylated metal macrocyclic complexes such as cobalt tetracarboxylated phenylporphyrin (CoTCPP) or cobalt tetracarboxylated phthalocyanine (CoTCPC) to the electrolyte.

    摘要翻译： 通过加入少量四羧基金属大环复合物如钴四羧基化卟啉（CoTCPP）或钴四羧酸化酞菁（CoTCPC）等方法，Li / SOCl2细胞中与阳极劣化相关的阳极钝化和过早电池故障已经大大降低到 电解液

    Electrode composition comprising doped tungsten oxides and electrochemical cell comprising same
    6.
    发明授权
    Electrode composition comprising doped tungsten oxides and electrochemical cell comprising same 有权
    包含掺杂的钨氧化物的电极组合物和包含它们的电化学电池

    公开(公告)号：US06291100B1

    公开(公告)日：2001-09-18

    申请号：US09396464

    申请日：1999-09-15

    申请人： Narayan Doddapaneni ,  Zhendong Hu ,  Shigenobu Denzumi

    发明人： Narayan Doddapaneni ,  Zhendong Hu ,  Shigenobu Denzumi

    IPC分类号： H01M448

    CPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/1391 ,  H01M6/16 ,  H01M10/052

    摘要： Provided is a novel electrode composition suitable for use in an electrochemical cell. The composition includes a polymeric binder material and a doped tungsten (IV) oxide active material. The active material includes a tungsten (IV) oxide host material and a metal dopant in the host material effective to increase the charge-discharge capacity per unit weight of the active material when used in an electrochemical cell. Also provided is a method for forming the electrode composition and an electrochemical cell comprising the composition. The invention results in an electrochemical cell having improved charge-discharge capacity per unit weight of the electrode active material, and is additionally chemically and electrochemically stable.

    摘要翻译： 提供适用于电化学电池的新型电极组合物。 该组合物包括聚合物粘合剂材料和掺杂的氧化钨（IV）活性材料。 活性材料包括主体材料中的钨（Ⅳ）氧化物主体材料和金属掺杂剂，当在电化学电池中使用时，有效地增加每单位重量的活性材料的充放电能力。 还提供了形成电极组合物的方法和包含该组合物的电化学电池。 本发明导致电化学电池具有改善的每单位重量的电极活性材料的充电 - 放电能力，并且还具有化学和电化学稳定性。

    Halogenated organic solid depolarizer
    8.
    发明授权
    Halogenated organic solid depolarizer 失效
    卤化有机固体去极化剂

    公开(公告)号：US4621036A

    公开(公告)日：1986-11-04

    申请号：US773107

    申请日：1985-09-06

    申请人： Narayan Doddapaneni

    发明人： Narayan Doddapaneni

    IPC分类号： H01M4/60 ,  H01M6/16 ,  H01M6/14 ,  C07D487/00

    CPC分类号： H01M4/60 ,  H01M6/16

    摘要： Certain solid organic depolarizers are disclosed for use in non-aqueous active metal cells which allow such cells to achieve both high voltage and high capacity with greater enhanced stability. The depolarizers include halogen adducts of triethylenediamine, also known as 1,4 diazabicyclo [2.2.2] octane such as N,N'-tetrachloro triethylenediamine.

    摘要翻译： 公开了某些固体有机去极化剂用于非水活性金属电池，其允许这样的电池实现高电压和高容量，并具有更高的稳定性。 去极化剂包括三亚乙基二胺的卤素加合物，也称为1,4-二氮杂双环[2.2.2]辛烷如N，N'-四氯三亚乙基二胺。

    Safety cathode for non-aqueous electrochemical cell
    9.
    发明授权
    Safety cathode for non-aqueous electrochemical cell 失效
    非水电化学电池用安全阴极

    公开(公告)号：US4822700A

    公开(公告)日：1989-04-18

    申请号：US185586

    申请日：1988-04-22

    申请人： Narayan Doddapaneni ,  David L. Chua ,  Gerald F. Hoff ,  James D. Jensen

    发明人： Narayan Doddapaneni ,  David L. Chua ,  Gerald F. Hoff ,  James D. Jensen

    IPC分类号： H01M4/62 ,  H01M4/96 ,  H01M6/14 ,  H01M6/50 ,  H01M10/36 ,  H01M10/44

    CPC分类号： H01M4/96 ,  H01M6/14 ,  H01M2200/00 ,  H01M2200/10 ,  H01M4/62

    摘要： Exothermic reactions at elevated temperatures in high rate non-aqueous active metal electrochemical cells which include an alkali metal anode, an electrolyte system including an electrolyte salt dissolved in a non-aqueous solvent depolarizer, by the provision of a reaction limiting positive electrode material which includes an amount of carbon black, an amount of binder and an amount of ceramic material, said ceramic material being substantially unreactive with other cell species below a predetermined temperature but capable of reacting to form substantially inactive products with the metal of the anode material at or above the predetermined temperature.

    摘要翻译： 通过提供反应限制性的正极材料，其包括碱金属阳极，包括溶解在非水溶剂去极化剂中的电解质盐的电解质体系的高速非水活性金属电化学电池中的升高温度下的放热反应， 一定量的炭黑，一定量的粘合剂和一定量的陶瓷材料，所述陶瓷材料与预定温度以下的其它细胞种类基本上不反应，但是能够与阳极材料的金属在等于或高于 预定温度。

    High rate metal oxyhalide cells
    10.
    发明授权
    High rate metal oxyhalide cells 失效
    高速金属卤氧化物细胞

    公开(公告)号：US4613551A

    公开(公告)日：1986-09-23

    申请号：US652363

    申请日：1984-09-19

    申请人： Narayan Doddapaneni

    发明人： Narayan Doddapaneni

    IPC分类号： H01M4/90 ,  H01M6/14

    CPC分类号： H01M6/14 ,  H01M4/9008

    摘要： A class of improved catalysts for use in high-rate active-metal non-aqueous cells which show excellent performance enhancing properties are disclosed. These comprise a class of metal porphyrin complexes which catalyze the electrochemical reduction of oxyhalides. The preferred porphyrin compounds include tetraphenyl porphyrin (TPP) and tetramethoxyphenyl porphyrin (TMPP). The preferred complexed metals are cobalt and iron yielding (CoTPP), (FeTPP), CoTMPP) and (FeTMPP), respectively. A polymeric form of TPP complexed with cobalt (CoTPP)n or iron (FeTPP)n is extremely insoluble in the typical Li/SOCl.sub.2 cell electrolyte and may be used very successfully in active cell configurations is also disclosed.

    摘要翻译： 公开了一类用于高速活性金属非水电池的改进的催化剂，其表现出优异的性能提高性能。 这些包括一类催化卤氧化物的电化学还原的金属卟啉络合物。 优选的卟啉化合物包括四苯基卟啉（TPP）和四甲氧基苯基卟啉（TMPP）。 优选的络合金属分别是钴和铁（CoTPP），（FeTPP），CoTMPP）和（FeTMPP）。 与钴（CoTPP）n或铁（FeTPP）n络合的TPP的聚合形式在典型的Li / SOCl 2电池电解质中非常不溶，并且可以非常成功地用于活性电池配置中也被公开。