公开(公告)号：US06518217B2

公开(公告)日：2003-02-11

申请号：US09932048

申请日：2001-08-17

申请人： Wei Xing ,  Rongbing Du ,  Tianhong Lu

发明人： Wei Xing ,  Rongbing Du ,  Tianhong Lu

IPC分类号： B01J2713

CPC分类号： H01M4/926 ,  B01J21/18 ,  B01J23/40 ,  B01J23/42 ,  B01J35/10 ,  B01J37/0203 ,  H01M4/921 ,  H01M8/1009 ,  Y02P70/56

摘要： The present invention relates a method for preparing nanometer electrocatalyst for proton exchange membrane fuel cells, comprising the steps of: 1) adding in water a platinum halogen compound or a mixture of a platinum halogen compound and a ruthenium halogen compound, and active carbon, the amount of noble metal in the solution is 0.5-10 g/L, and the amount of active carbon is 0.05-2 g/L; 2) adjusting the pH of the solution to 2.5-10.5 with potassium hydroxide and/or ammonium hydroxide; 3) adding dropwise a reducing agent to an amount of 2.5 to 5 times in excess of that of the noble metal in moles, and allowing the reduction reaction to proceed; 4) filtering off the liquid and washing the remains; and 6) drying the remains. The catalysts prepared by the present invention have uniform particle sizes in the range of 4±0.5 nm, and superior electrochemical properties.

摘要翻译： 本发明涉及质子交换膜燃料电池用纳米电催化剂的制备方法，其特征在于包括以下步骤：1）在水中加入铂卤素化合物或铂卤素化合物与钌卤化合物和活性炭的混合物， 溶液中贵金属的含量为0.5〜10g / L，活性炭的含量为0.05〜2g / L， 2）用氢氧化钾和/或氢氧化铵将溶液的pH调节至2.5-10.5; 3）将贵金属的摩尔量超过2.5〜5倍的还原剂滴加到还原反应中， 4）过滤掉液体并洗涤残留物; 和6）干燥残余物。 本发明制备的催化剂在4±0.5nm的范围内具有均匀的粒度，并具有优异的电化学性能。

公开(公告)号：US06815391B2

公开(公告)日：2004-11-09

申请号：US10424215

申请日：2003-04-25

申请人： Wei Xing ,  Xuguang Li ,  Tianhong Lu

发明人： Wei Xing ,  Xuguang Li ,  Tianhong Lu

IPC分类号： H01M488

CPC分类号： H01M4/92 ,  B01J21/18 ,  B01J23/42 ,  B01J37/16 ,  H01M4/926 ,  H01M2008/1095

摘要： The present invention relates to a method for preparing nano-level Pt/C electrocatalyst for cathode of fuel cell. By employing ammonium chloride, potassium chloride, ammonium bromide, potassium bromide, ammonium iodide or potassium iodide as anchoring agent for the chloroplatinic acid, the present invention realizes the preparation of Pt/C electrocatalyst with platinum micro-particles homogeneously distributed in the interstices as well as on the surfaces of the active carbon. The sizes of the platinum particles in the catalyst are homogeneous and their average diameter is in the range of 2.5 to 4.5 mm. The present method is a novel one for preparing nanometer level Pt/C electrocatalyst. Said electrocatalyst possesses high specific activity per unit mass for the catalytic reduction of oxygen.

公开(公告)号：US07005401B2

公开(公告)日：2006-02-28

申请号：US10612336

申请日：2003-07-03

申请人： Tianhong Lu ,  Xuguang Li ,  Wei Xing

发明人： Tianhong Lu ,  Xuguang Li ,  Wei Xing

IPC分类号： H01M4/88 ,  H01M4/86 ,  B01J21/18 ,  B01J31/00

CPC分类号： H01M4/8652 ,  B01J21/063 ,  B01J21/18 ,  B01J23/70 ,  B01J37/0203 ,  B01J37/0205 ,  B01J37/086 ,  H01M4/9008 ,  H01M2008/1095

摘要： A method of preparing non-platinum composite electrocatalyst for a fuel cell cathode, comprising: (1) preparing a carbon supporting titanium dioxide; (2) compounding the carbon supporting titanium dioxide with a transition metal macrocyclic compound in an organic solvent to produce a carbon supporting titanium dioxide-transition metal macrocyclic compound comprising 0.1–5 g/L of macrocyclic compound; and (3) thermal treating the resulting compound in step (2) at 100–1000° C. to produce a composite catalyst. The composite catalyst prepared with the method according to the present invention also has the advantages of better resistance to methanol and lower cost over the Pt/C catalyst. The said composite catalyst would have better prospects in application.

摘要翻译： 一种制备用于燃料电池阴极的非铂复合电催化剂的方法，包括：（1）制备负载二氧化钛的碳; （2）将碳载体二氧化钛与过渡金属大环化合物在有机溶剂中混合以制备包含0.1-5g / L大环化合物的碳载体二氧化钛 - 过渡金属大环化合物; 和（3）在步骤（2）中在100-1000℃下热处理所得化合物以产生复合催化剂。 用本发明方法制备的复合催化剂还具有耐甲醇性好，Pt / C催化剂成本低的优点。 所述复合催化剂的应用前景将更好。

公开(公告)号：US07593735B2

公开(公告)日：2009-09-22

申请号：US10547602

申请日：2004-02-27

申请人： Holger Karl ,  Harald Müller ,  Morten Schläger ,  Jürgen Totzke ,  Wei Xing

发明人： Holger Karl ,  Harald Müller ,  Morten Schläger ,  Jürgen Totzke ,  Wei Xing

IPC分类号： H04W72/08

CPC分类号： H04W36/0011 ,  H04L47/125 ,  H04L47/14 ,  H04W8/26 ,  H04W36/18 ,  H04W80/00 ,  H04W80/04 ,  H04W84/12

摘要： In order to transmit data packets between a wirelessly connectable communications device and a communications partner, particularly during a handover process, the invention provides that when a first wireless transmission path is available, an availability of at least one additional wireless transmission path is detected. Based on the detection, a specific assignment schema, via which at least one portion of the data packets is assigned to each of the transmission paths, is selected according to specific transmission requirements and/or to a transmission protocol to be used for transmitting the data packets. An address specification specific to the transmission path is then assigned to a respective data packet that is assigned to a transmission path. By using the assigned address specifications, the data packets are transmitted via the different transmission paths between the communications device and the communications partner according to the selected assignment schema.

摘要翻译： 为了在可无线连接的通信设备和通信对方之间传送数据分组，特别是在切换过程期间，本发明提供了当第一无线传输路径可用时，检测到至少一个附加无线传输路径的可用性。 基于检测，根据特定传输要求和/或要用于发送数据的传输协议来选择通过其将数据分组的至少一部分分配给每个传输路径的特定分配模式 数据包 然后将特定于传输路径的地址规范分配给分配给传输路径的相应数据分组。 通过使用分配的地址规范，根据所选择的分配模式，经由通信设备和通信伙伴之间的不同传输路径传输数据分组。

公开(公告)号：US20070036106A1

公开(公告)日：2007-02-15

申请号：US10547602

申请日：2004-02-27

申请人： Holger Karl ,  Harald Muller ,  Morten Schlager ,  Jurgen Totzke ,  Wei Xing

发明人： Holger Karl ,  Harald Muller ,  Morten Schlager ,  Jurgen Totzke ,  Wei Xing

IPC分类号： H04Q7/00

CPC分类号： H04W36/0011 ,  H04L47/125 ,  H04L47/14 ,  H04W8/26 ,  H04W36/18 ,  H04W80/00 ,  H04W80/04 ,  H04W84/12

摘要： In order to transmit data packets between a wirelessly connectable communications device and a communications partner, particularly during a handover process, the invention provides that when a first wireless transmission path is available, an availability of at least one additional wireless transmission path is detected. Based on the detection, a specific assignment schema, via which at least one portion of the data packets is assigned to each of the transmission paths, is selected according to specific transmission requirements and/or to a transmission protocol to be used for transmitting the data packets. An address specification specific to the transmission path is then assigned to a respective data packet that is assigned to a transmission path. By using the assigned address specifications, the data packets are transmitted via the different transmission paths between the communications device and the communications partner according to the selected assignment schema.

摘要翻译： 为了在可无线连接的通信设备和通信对方之间传送数据分组，特别是在切换过程期间，本发明提供了当第一无线传输路径可用时，检测到至少一个附加无线传输路径的可用性。 基于检测，根据特定传输要求和/或要用于发送数据的传输协议来选择通过其将数据分组的至少一部分分配给每个传输路径的特定分配模式 数据包 然后将特定于传输路径的地址规范分配给分配给传输路径的相应数据分组。 通过使用分配的地址规范，根据所选择的分配模式，经由通信设备和通信伙伴之间的不同传输路径传输数据分组。