公开(公告)号：US5441694A

公开(公告)日：1995-08-15

申请号：US258035

申请日：1994-06-10

申请人： Masanori Fukuhira ,  Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masaki Watanabe

发明人： Masanori Fukuhira ,  Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masaki Watanabe

IPC分类号： C01B21/068 ,  B22F1/00

CPC分类号： C01B21/0682 ,  C01P2004/62

摘要： In a method for preparing a high .alpha.-type silicon nitride powder by adding to and mixing with metallic silicon powder a copper catalyst and nitriding the mixture in a non-oxidizing gas atmosphere containing nitrogen or ammonia at 1,000.degree. to 1,500.degree. C., the amount of copper catalyst is limited to from 0.05 % to less than 0.5 % by weight of copper based on the weight of the metallic silicon. There is obtained silicon nitride powder of high purity at low cost and high efficiency since the copper catalyst can be efficiently removed from the silicon nitride powder through conventional acid treatment.

摘要翻译： 在通过在金属硅粉末中加入和混合铜催化剂并在1000℃至1500℃下在含有氮或氨的非氧化性气体气氛中氮化该混合物的方法中制备高α型氮化硅粉末的方法， 基于金属硅的重量，铜催化剂的量限制在0.05至小于0.5重量％的铜。 由于可以通过常规的酸处理从氮化硅粉末中有效地除去铜催化剂，所以以低成本和高效率获得了高纯度的氮化硅粉末。

公开(公告)号：US5456896A

公开(公告)日：1995-10-10

申请号：US273829

申请日：1994-07-12

申请人： Hirofumi Fukuoka ,  Masaki Watanabe ,  Yoshiharu Konya ,  Masanori Fukuhira

发明人： Hirofumi Fukuoka ,  Masaki Watanabe ,  Yoshiharu Konya ,  Masanori Fukuhira

IPC分类号： C01B21/068

CPC分类号： C01B21/0682

摘要： Silicon nitride powder is prepared by nitriding metallic silicon powder in a nitriding gas atmosphere at a temperature of 1,000.degree. C.-1,500.degree. C. Midway the nitriding step, the nitrided product is heat treated in an inert non-oxidizing gas atmosphere or vacuum at a temperature higher than the nitriding temperature, but lower than 1,600.degree. C. The product is nitrided again, obtaining high .alpha.-content silicon nitride powder.

摘要翻译： 氮化硅粉末通过在氮化气体气氛中在1000℃-1,500℃的温度下氮化金属硅粉末制备。在氮化步骤的中途，氮化产物在惰性非氧化性气体气氛或真空中进行热处理 温度高于氮化温度，但低于1600℃。产物再次氮化，获得高含量的氮化硅粉末。

公开(公告)号：US5573689A

公开(公告)日：1996-11-12

申请号：US594156

申请日：1996-01-31

申请人： Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masanori Fukuhira ,  Ichiro Ishizaka

发明人： Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masanori Fukuhira ,  Ichiro Ishizaka

IPC分类号： B01J8/18 ,  B01J8/24 ,  C01B21/06 ,  C01B21/064 ,  C01B21/068 ,  C01B21/072 ,  C04B35/584 ,  F27B15/00 ,  F27B5/14

CPC分类号： C04B35/584 ,  B01J8/1836 ,  B01J8/1872 ,  C01B21/06 ,  C01B21/0641 ,  C01B21/0682 ,  C01B21/0722

摘要： In a fluidized bed reactor for preparing a metal nitride by feeding metal powder and a non-oxidizing gas containing N.sub.2 or NH.sub.3 into a reaction tube (1) to form a fluidized bed (2) therein and heating the fluidized bed for nitriding the metal powder, an envelope (11) encloses the reaction tube (1) for preventing the surrounding air from entering the reaction tube. A heater (9) is disposed outside the envelope (11) for heating the fluidized bed (2) to 1,200.degree. C. or higher. The envelope prevents penetration of the surrounding air into the reaction tube and also prevents deterioration of the heater and surrounding components by scattering of metal fines. The reactor ensures safe operation to prepare metal nitride powder of high purity on an industrial scale.

摘要翻译： 在用于通过将金属粉末和含有N 2或NH 3的非氧化气体进料到反应管（1）中以在其中形成流化床（2）而制备金属氮化物的流化床反应器中，并加热流化床以使金属粉末渗氮 ，封套（11）包围用于防止周围空气进入反应管的反应管（1）。 将加热器（9）设置在用于将流化床（2）加热到1200℃以上的外壳（11）的外侧。 外壳防止周围空气渗透到反应管中，并且还防止加热器和周围部件由于金属细粉的散射而变质。 反应器确保安全操作，以工业规模制备高纯度的金属氮化物粉末。

公开(公告)号：US5817285A

公开(公告)日：1998-10-06

申请号：US759378

申请日：1996-12-04

申请人： Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masanori Fukuhira

发明人： Hirofumi Fukuoka ,  Yoshiharu Konya ,  Masanori Fukuhira

IPC分类号： C01B21/068

CPC分类号： C01B21/0682

摘要： Silicon nitride powder is continuously prepared by feeding metallic silicon powder into a fluidized bed comprising silicon nitride powder and nitrogen or ammonia gas and discharging a nitrided product from the fluidized bed. The metallic silicon powder is pretreated at a temperature of 1,000.degree.-1,400.degree. C. under a vacuum of 0.001-100 Torr before it is subject to nitriding reaction.

摘要翻译： 通过将金属硅粉末进料到包含氮化硅粉末和氮气或氨气的流化床中并从流化床排出氮化产物来连续制备氮化硅粉末。 金属硅粉末在氮化反应之前，在1000-100乇的真空下，在1000°-1,400℃的温度下进行预处理。

公开(公告)号：US5073358A

公开(公告)日：1991-12-17

申请号：US557572

申请日：1990-07-24

申请人： Mutsuo Shimizu ,  Hirofumi Fukuoka ,  Masanori Fukuhira

发明人： Mutsuo Shimizu ,  Hirofumi Fukuoka ,  Masanori Fukuhira

IPC分类号： C01B21/068

CPC分类号： C01B21/0682

摘要： Silicon nitride powder is prepared by continuously supplying metallic silicon powder to a first fluidized bed which is composed of silicon nitride powder and a non-oxidizing reaction gas containing nitrogen or ammonia gas and maintained at 1,000.degree. to 1,400.degree. C. where primary nitriding reaction takes place, and continuously withdrawing the nitride product from the first fluidized bed and supplying it to a second fluidized bed of similar composition where secondary nitriding reaction takes place for nitriding the unreacted metallic silicon powder.

公开(公告)号：US5232677A

公开(公告)日：1993-08-03

申请号：US647142

申请日：1991-01-29

申请人： Hirofumi Fukuoka ,  Mutsuo Shimizu ,  Hidemitsu Ochiai ,  Hideaki Shimizu ,  Masanori Fukuhira

发明人： Hirofumi Fukuoka ,  Mutsuo Shimizu ,  Hidemitsu Ochiai ,  Hideaki Shimizu ,  Masanori Fukuhira

IPC分类号： C01B21/068

CPC分类号： C01B21/0682

摘要： Silicon nitride powder is produced in two steps, by supplying metallic silicon powder to a fluidized bed composed of silicon nitride and nitrogen or ammonia gas where primary nitriding reaction is effected until the silicon powder is nitrided to an amount of at least 50% and transferring the nitrided product from the fluidized bed into a moving bed where secondary nitriding reaction is effected for nitriding the unreacted silicon with nitrogen or ammonia gas. This method is adapted for manufacture on a commercial scale because the silicon nitride powder thus obtained is consistent and has a very high degree of nitriding and a minimal variation in quality.

公开(公告)号：US20100243951A1

公开(公告)日：2010-09-30

申请号：US12731044

申请日：2010-03-24

申请人： Kohichiro WATANABE ,  Meguru Kashida ,  Hirofumi Fukuoka

发明人： Kohichiro WATANABE ,  Meguru Kashida ,  Hirofumi Fukuoka

IPC分类号： H01M4/13 ,  C23F1/00

CPC分类号： H01M4/485 ,  H01M10/0525 ,  H01M2004/021

摘要： A negative electrode material comprising composite particles having silicon nano-particles dispersed in silicon oxide is suited for use in nonaqueous electrolyte secondary batteries. The silicon nano-particles have a size of 1-100 nm. The composite particles contain oxygen and silicon in a molar ratio: 0

摘要翻译： 包含分散在氧化硅中的硅纳米粒子的复合粒子的负极材料适用于非水电解质二次电池。 硅纳米颗粒的尺寸为1-100nm。 复合颗粒含有摩尔比为0

公开(公告)号：US20100051858A1

公开(公告)日：2010-03-04

申请号：US12578998

申请日：2009-10-14

申请人： Mikio ARAMATA ,  Satoru Miyawaki ,  Hirofumi Fukuoka

发明人： Mikio ARAMATA ,  Satoru Miyawaki ,  Hirofumi Fukuoka

IPC分类号： H01M4/88

CPC分类号： H01M4/38 ,  C01B33/023 ,  H01M4/625 ,  H01M2004/021 ,  Y10T428/2993

摘要： A metallic silicon powder is prepared by effecting chemical reduction on silica stone, metallurgical refinement, and metallurgical and/or chemical purification to reduce the content of impurities. The powder is best suited as a negative electrode material for non-aqueous electrolyte secondary cells, affording better cycle performance.

摘要翻译： 通过在石英石上进行化学还原，冶金精炼和冶金和/或化学纯化来制备金属硅粉，以减少杂质含量。 该粉末最适合作为非水电解质二次电池的负极材料，提供更好的循环性能。

公开(公告)号：US07658863B2

公开(公告)日：2010-02-09

申请号：US11185902

申请日：2005-07-21

申请人： Mikio Aramata ,  Satoru Miyawaki ,  Hirofumi Fukuoka

发明人： Mikio Aramata ,  Satoru Miyawaki ,  Hirofumi Fukuoka

IPC分类号： H01M4/58

CPC分类号： H01M4/485 ,  H01M4/13 ,  H01M4/366 ,  H01M4/587 ,  Y10T428/2998

摘要： A Si—C—O composite powder is obtained by curing a reactive silane or siloxane having crosslinkable groups through heat curing or catalytic reaction into a crosslinked product and sintering the crosslinked product in an inert gas stream at a temperature of 700-1,400° C. into an inorganic state. It exhibits satisfactory cycle performance when used as the negative electrode material for non-aqueous electrolyte secondary cells.

摘要翻译： 通过将具有可交联基团的反应性硅烷或硅氧烷通过热固化或催化反应固化成交联产物并在700-1,400℃的惰性气流中烧结交联产物，得到Si-CO复合粉末，形成 无机状态。 当用作非水电解质二次电池的负极材料时，其表现出令人满意的循环性能。

公开(公告)号：US20090239151A1

公开(公告)日：2009-09-24

申请号：US12404710

申请日：2009-03-16

申请人： Tetsuo NAKANISHI ,  Koichiro Watanabe ,  Hirofumi Fukuoka

发明人： Tetsuo NAKANISHI ,  Koichiro Watanabe ,  Hirofumi Fukuoka

IPC分类号： H01M4/58 ,  B05D5/12

CPC分类号： H01M10/0525 ,  H01M4/0428 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/622 ,  H01M4/625

摘要： A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains improved performance and efficiency over repeated charge/discharge cycles by virtue of mitigated volumetric changes during charge/discharge cycles.

摘要翻译： 包含活性物质的负极材料和1-20重量％的聚酰亚胺树脂粘合剂适用于非水电解质二次电池。 活性材料包括氧化硅颗粒和1-50重量％的硅颗粒。 负极具有改善的循环性能，同时保持高的电池容量和低的氧化硅体积膨胀。 非水电解质二次电池具有高的初始效率，并且通过在充电/放电循环期间减轻的体积变化，在重复的充电/放电循环中保持改进的性能和效率。