公开(公告)号：US06455199B1

公开(公告)日：2002-09-24

申请号：US09214825

申请日：1999-02-22

申请人： Masaki Kitagawa ,  Yoshihiro Kashihara ,  Hizuru Koshina ,  Toyoji Sugimoto ,  Kunio Tsuruta ,  Shuji Ito ,  Hajime Nishino ,  Kojiro Ishikawa ,  Hisanori Sugimoto ,  Kaoru Tsukamoto

发明人： Masaki Kitagawa ,  Yoshihiro Kashihara ,  Hizuru Koshina ,  Toyoji Sugimoto ,  Kunio Tsuruta ,  Shuji Ito ,  Hajime Nishino ,  Kojiro Ishikawa ,  Hisanori Sugimoto ,  Kaoru Tsukamoto

IPC分类号： C01B3104

CPC分类号： H01M4/587 ,  H01M4/133 ,  H01M10/0525 ,  H01M2004/021 ,  Y10T29/49108

摘要： Graphite powder for a negative electrode in prior arts, which allows lithium ions to repeat intercalation and deintercalation reversibly by charge and discharge, has failed to attain a specific capacity close to the theoretical capacity of 372 mAh per 1 g. Also, there was a problem in storage property at a high temperature when it is attempted to improve the high rate charge and discharge characteristics. An object of the present invention is to solve these problems. In the process of pulverizing flaky graphite particles of which plane interval (d002) of (002) plane is 3.350 to 3.360 angstroms, and crystallite size (Lc) in the C-axis direction is at least 1000 angstroms or more, the graphite particles are chamfered into disk- or tablet-like form, which are then sifted, so as to obtain a graphite powder, of which mean particle size is defined within the range of 10 to 30 microns, mean thickness of thinnest portion is defined to be 3 to 9 microns, and X-ray diffraction peak intensity ratio of (110)/(004) by a wide angle X-ray diffraction method is defined to be 0.015 or more. By using this powder, the conventional problems are solved in a favorable balance, and, while achieving high energy density, the high rate discharge performance and reliability when left at a high temperature can be enhanced.

摘要翻译： 现有技术中的允许锂离子通过充电和放电可逆地重复嵌入和脱嵌的现有技术的石墨粉未能达到接近每1g的372mAh的理论容量的比容量。 此外，当尝试提高高速率充放电特性时，在高温下的储存特性存在问题。 本发明的目的是解决这些问题。 在（002）面的平面间隔（d002）为3.350〜3.360埃的片状石墨粒子粉碎的过程中，C轴方向的微晶尺寸（Lc）为1000以上，石墨粒子为 倒角成片状或片状，然后将其筛分，以获得石墨粉末，其平均粒度定义在10至30微米的范围内，最薄部分的平均厚度定义为3至 通过广角X射线衍射法将（110）/（004）的X射线衍射峰强度比定义为0.015以上。 通过使用这种粉末，常规问题得到平衡的解决，并且在实现高能量密度的同时，可以提高高放电性能和高温时的可靠性。

公开(公告)号：US06426376B1

公开(公告)日：2002-07-30

申请号：US09529518

申请日：2000-06-27

申请人： John Wilhem Geus

发明人： John Wilhem Geus

IPC分类号： C01B3104

CPC分类号： C08K3/04 ,  C08K9/02

摘要： A graphitic material having an accessible surface of at least 50 m2 per gram, wherein 0.1-40% by weight, based on the weight of the material, of at least one alkali metal is taken up between the graphite layers.

摘要翻译： 具有至少50m2 / g的可接近表面的石墨材料，其中基于材料重量的至少一种碱金属的0.1-40重量％被吸收在石墨层之间。

公开(公告)号：US06280663B1

公开(公告)日：2001-08-28

申请号：US09514219

申请日：2000-02-25

申请人： Richard Liichang Shao ,  James William Kortovich ,  Irwin Charles Lewis ,  Richard Thomas Lewis

发明人： Richard Liichang Shao ,  James William Kortovich ,  Irwin Charles Lewis ,  Richard Thomas Lewis

IPC分类号： C01B3104

CPC分类号： C04B35/532 ,  H01M4/583 ,  H01M4/96 ,  Y10T428/249928 ,  Y10T428/30

摘要： A process for preparing pins for connecting carbon electrodes is presented. In particular, a process for preparing pins for connecting carbon electrodes including the steps of combining calcined coke, a liquid pitch binder and carbon fibers derived from mesophase pitch to form a pinstock blend; extruding the pinstock blend to form a green pinstock; baking the green pinstock to form a carbonized pinstock; and graphitizing the carbonized pinstock by maintaining the carbonized pinstock at a temperature of at least about 2500° C. for no more than about 18 hours is presented. The pins prepared by the inventive process are also presented.

摘要翻译： 提出了一种制备用于连接碳电极的引脚的工艺。 具体地说，一种制备用于连接碳电极的引脚的方法，包括以下步骤：将煅烧焦炭，液体沥青粘合剂和衍生自中间相间距的碳纤维组合以形成母料共混物; 挤压坯料混合物以形成绿色的坯料; 烘烤绿色的脚骨以形成碳化的脚钉; 并且通过将碳化的母料保持在至少约2500℃的温度下不超过约18小时来呈现碳化的母料的石墨化。 还提出了由本发明方法制备的针。

公开(公告)号：US06773689B1

公开(公告)日：2004-08-10

申请号：US09762211

申请日：2001-03-29

申请人： Steinar Lynum ,  Jan Hugdahl ,  Ketil Hox ,  Ragne Hildrum

发明人： Steinar Lynum ,  Jan Hugdahl ,  Ketil Hox ,  Ragne Hildrum

IPC分类号： C01B3104

CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B3/0021 ,  C01B3/0078 ,  C01B32/152 ,  C01B32/16 ,  Y02E60/325 ,  Y10S977/948

摘要： This invention relates to a carbon media for storage of hydrogen characterized in that it comprises known and novel micro-domain materials and that it is produced by a one or two-step plasma process. In the one-step plasma process conventional carbon black or graphitic carbon black can be formed. In the two-step plasma process, a hydrocarbon feed material is sent through a plasma zone and becomes partly dehydrogenated in the first step to form polycyclic aromatic hydrocarbons (PAHs), and is then sent through second plasma zone to become completely dehydrogenated to form micro-domain graphitic materials in the second step. By micro-domain graphitic materials we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees 60° and/or 120°, corresponding to cone angles of respectively 112.9° and/or 83.6°.

摘要翻译： 本发明涉及一种用于储存氢的碳介质，其特征在于其包括已知和新颖的微区域材料，并且其通过一步或两步等离子体工艺生产。 在一步等离子体处理中，可以形成常规的炭黑或石墨炭黑。 在两步等离子体工艺中，烃进料通过等离子体区域传送并在第一步骤中部分脱氢形成多环芳烃（PAH），然后通过第二等离子体区域进行完全脱氢形成微孔 - 第二步中的石墨材料。 通过微畴石墨材料，我们是指富勒烯，碳纳米管，开放式圆锥形碳结构（也称为微锥体），扁平石墨片，或两者或所有这些的混合物。 新型碳材料是开放式碳微型锥体，总旋转度为60°和/或120°，对应于锥角分别为112.9°和/或83.6°。

公开(公告)号：US06576369B1

公开(公告)日：2003-06-10

申请号：US09138561

申请日：1998-08-24

申请人： Koji Moriguchi ,  Mitsuharu Yonemura ,  Kazuhito Kamei ,  Noriyuki Negi ,  Masaru Abe ,  Hideya Kaminaka

发明人： Koji Moriguchi ,  Mitsuharu Yonemura ,  Kazuhito Kamei ,  Noriyuki Negi ,  Masaru Abe ,  Hideya Kaminaka

IPC分类号： C01B3104

CPC分类号： H01M4/583 ,  C01B32/20 ,  C01P2002/60 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/133 ,  H01M4/622 ,  H01M4/623 ,  H01M6/10 ,  H01M10/0525

摘要： A graphite powder has surface closed-end structures in which the graphite c-plane layers of the graphite layer crystal lattices have closed-ends on the surface of the graphite powder by linking the ends of one or more pairs of the c-plane layers, leaving interstices which are open on the surface of the graphite. The number of open interstices is at least 100 and at most 1500 per micrometer in a c-axis direction of the graphite. Preferably, the graphite powder has a specific surface area of 1.0 m2/g or less. Such a graphite powder can be prepared either by graphitizing a carbon material, which has been pulverized at a high speed under well-controlled conditions before and/or after the carbonization, or by subjecting a carbon material, which has been pulverized under well-controlled conditions before and/or after the carbonization, to graphitization and then to oxidative heat treatment at a temperature of 600-800° C. and finally to heat treatment at a temperature of 800° C. or higher in an inert gas. The graphite powder can be used to produce negative electrodes of lithium ion secondary batteries having a high discharge capacity of at least 320 mAh/g and a high charge/discharge coulombic efficiency of at least 90%.

摘要翻译： 石墨粉末具有表面封闭端结构，其中石墨层晶格的石墨c面层通过连接一对或多对c面层的端部而在石墨粉末的表面上具有封闭端， 留下在石墨表面开放的间隙。 在石墨的c轴方向上，开口间隙的数量为至少100个，最高为1500微米。 优选石墨粉的比表面积为1.0m 2 / g以下。 这样的石墨粉末可以通过在碳化之前和/或之后在良好控制的条件下高速粉碎的碳材料进行石墨化，或者通过将被粉碎的碳材料进行良好控制 在碳化之前和/或之后的条件进行石墨化，然后在600-800℃的温度下进行氧化热处理，最后在惰性气体中在800℃以上的温度下进行热处理。 该石墨粉末可用于制造具有至少320mAh / g的高放电容量和高充放电库仑效率至少为90％的锂离子二次电池的负极。

公开(公告)号：US06387343B1

公开(公告)日：2002-05-14

申请号：US09136596

申请日：1998-08-19

申请人： James W. Klett

发明人： James W. Klett

IPC分类号： C01B3104

CPC分类号： F28D20/023 ,  C04B38/00 ,  Y02E60/145 ,  Y10T428/2982 ,  Y10T428/30 ,  C04B35/52

摘要： A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

摘要翻译： 公开了一种生产碳泡沫或复合材料的方法，其消除了对常规氧化稳定化的需要。 该方法使用中间相或各向同性沥青和使用单一模具的简化方法。 泡沫在支柱中具有相对均匀的孔径分布和高度排列的图形结构。 泡沫材料可以制成复合材料，其可用于耐热和结构应用的高温夹芯板。

公开(公告)号：US06306264B1

公开(公告)日：2001-10-23

申请号：US09363582

申请日：1999-07-29

申请人： Young Bae Kwon ,  Oh Yun Kwon ,  Sang Won Choi ,  Seung Won Kim

发明人： Young Bae Kwon ,  Oh Yun Kwon ,  Sang Won Choi ,  Seung Won Kim

IPC分类号： C01B3104

CPC分类号： B01J20/20 ,  C01B32/225

摘要： Disclosed is a novel method for producing an expanded graphite which can be utilized for oil adsorbents, gaskets, packing sheets, adsorbents of volatile organic compounds and the like. SO3-graphite interlayer compound is formed by contacting graphite particles with SO3 generated from fuming sulfuric acid or anhydrous sulfuric acid. Excessive SO3 condensed on SO3-graphite interlayer compound is separated. Then, energy is applied to SO3-graphite interlayer compound to expand the graphite. An acid containing a single component can be continuously reused thus reducing the amount of the acid to {fraction (1/10)}-{fraction (1/100)} of that of an acid mixture used in the conventional method. As a result, the generation of a large amount of environmentally hazardous acid waste can be markedly reduced. Further, the concentration of sulfur remained in the expanded graphite also can be reduced, largely eliminating the corrosive effect of the expanded graphite onto metals when used for gaskets, packing sheets and the like.

摘要翻译： 公开了一种可用于油吸附剂，垫圈，包装片，挥发性有机化合物的吸附剂等的膨胀石墨的制造方法。 通过使石墨颗粒与由发烟硫酸或无水硫酸产生的SO 3接触而形成SO 3 - 石墨层间化合物。 在SO3-石墨层间化合物上浓缩的过量SO 3被分离。 然后，将能量施加到SO 3 - 石墨层间化合物上以使石墨膨胀。 含有单一组分的酸可以连续重复使用，从而将酸的量减少到常规方法中使用的酸混合物的酸的百分比（1/10）} - {级分（1/100）}。 结果，可以显着降低大量对环境有害的酸性废物的产生。 此外，还可以减少残留在膨胀石墨中的硫的浓度，在用于垫圈，包装片等时，大大地消除了膨胀石墨对金属的腐蚀作用。

公开(公告)号：US06294142B1

公开(公告)日：2001-09-25

申请号：US09336250

申请日：1999-06-18

申请人： Gholam-Abbas Nazri

发明人： Gholam-Abbas Nazri

IPC分类号： C01B3104

CPC分类号： C01B3/0078 ,  C01B32/22 ,  Y02E60/324

摘要： A hydrogen fuel storage composition is prepared by mixing and reacting, on an atomic proportion basis, one part of an alkali metal selected form the group of lithium, sodium or potassium with eight to 24 parts of carbon under conditions of temperature and pressure such that a fully-reacted alkali metal intercalated graphitic carbon composite is formed. When suitably prepared, such a composite can reversibly absorb ten percent or more of its weight of hydrogen gas.

摘要翻译： 通过在原子比例的基础上，将一部分选自锂，钠或钾的一种碱金属与8至24份碳的温度和压力条件混合并反应制备氢燃料储存组合物， 形成了完全反应的碱金属插层石墨碳复合材料。 当适当制备时，这种复合材料可以可逆地吸收其重量的10％或更多的氢气。

公开(公告)号：US06783747B1

公开(公告)日：2004-08-31

申请号：US09634461

申请日：2000-08-07

申请人： Akinori Sudo ,  Chiaki Sotowa ,  Shigeru Murakami

发明人： Akinori Sudo ,  Chiaki Sotowa ,  Shigeru Murakami

IPC分类号： C01B3104

CPC分类号： H01M4/583 ,  C01B32/20 ,  C01P2002/78 ,  C01P2006/80 ,  H01M4/133 ,  H01M10/0525

摘要： An object of the present invention is to provide a method for producing at high productivity graphite powder containing no impurity, in which carbon powder material is effectively heated for graphitization; and an apparatus for producing the graphite powder. Carbon powder is placed in a carbon-made container, and the container is heated through a supply of electricity to the container. An apparatus comprising a heating chamber is provided. The container can be continuously conveyed to the apparatus, heated in the apparatus, and removed from the apparatus. Through use of the apparatus, graphite carbon powder which is suitably employed in a lithium-ion secondary battery can be produced.

摘要翻译： 本发明的目的是提供一种高效生产不含杂质的石墨粉末的方法，其中碳粉材料被有效地加热以进行石墨化; 以及石墨粉的制造装置。 将碳粉放置在碳制容器中，通过向容器供电加热容器。 提供了包括加热室的装置。 容器可以连续输送到设备中，在设备中加热并从设备中取出。 通过使用该装置，可以制造适用于锂离子二次电池的石墨碳粉。

公开(公告)号：US06764767B2

公开(公告)日：2004-07-20

申请号：US09292834

申请日：1999-04-16

申请人： Koji Moriguchi ,  Mitsuhara Yonemura ,  Kazuhito Kamei ,  Masaru Abe ,  Hideya Kaminaka ,  Noriyuki Negi ,  Atsuo Omaru ,  Masayuki Nagamine

发明人： Koji Moriguchi ,  Mitsuhara Yonemura ,  Kazuhito Kamei ,  Masaru Abe ,  Hideya Kaminaka ,  Noriyuki Negi ,  Atsuo Omaru ,  Masayuki Nagamine

IPC分类号： C01B3104

CPC分类号： H01M10/0525 ,  C01B32/20 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2006/80 ,  H01M4/133 ,  H01M4/587 ,  H01M2004/021 ,  Y10T428/30

摘要： A graphite powder suitable for a negative electrode material of a lithium ion secondary battery which assures a high discharging capacity not lower than 320 mAh/g is to be manufactured at a lower cost. Specifically, a graphite powder containing 0.01 to 5.0 wt % of boron and having a looped closure structure at an end of a graphite c-planar layer on the surface of a powder, with the density of the interstitial planar sections between neighboring closure structures being not less than 100/&mgr;m and not more than 1500/&mgr;m, and with d002 being preferably not larger than 3.3650 Å, is manufactured by (1) heat-treating a carbon material pulverized at an elevated speed before or after carbonization for graphization at temperature exceeding 1500° C. or by (2) heat-treating the carbon material pulverized before or after carbonization at a temperature exceeding 1500° C. for graphization and subsequently further heat-treating the graphized material at a temperature exceeding a temperature of the oxidating heat treatment and the heat treatment in the inert gas.

摘要翻译： 以更低的成本制造适合于确保高放电容量不低于320mAh / g的锂离子二次电池的负极材料的石墨粉末。 具体地说，在粉末表面上，在石墨c平面层的端部含有0.01〜5.0重量％的硼并且具有环状封闭结构的石墨粉末，相邻闭合结构之间的间隙平面部分的密度不是 小于100 /小时且不超过1500 / mum，d002优选不大于3.3650，通过以下方法制造：（1）在碳化之前或之后以高速粉碎的碳材料进行热处理，以在超过 或者（2）在碳化之前或之后粉碎的碳材料在超过1500℃的温度下进行热处理，以进行石墨化，随后在超过氧化热处理温度的温度下进一步热处理石墨化材料 并在惰性气体中进行热处理。