公开(公告)号：US20070248862A1

公开(公告)日：2007-10-25

申请号：US11488175

申请日：2006-07-18

申请人： Byungwoo Park ,  Chunjoong Kim ,  Myunggoo Kang ,  Jin Park ,  Hyuk Kim ,  Min Kim

发明人： Byungwoo Park ,  Chunjoong Kim ,  Myunggoo Kang ,  Jin Park ,  Hyuk Kim ,  Min Kim

IPC分类号： H01M8/10

CPC分类号： H01M4/9083 ,  H01M4/8605 ,  H01M4/8828 ,  H01M4/921 ,  H01M4/925 ,  Y02E60/50 ,  Y10T29/49108

摘要： Disclosed is an electrode catalyst comprising: (a) a support; (b) metal catalyst particles supported on the support and formed of a catalytically active metal or metal-containing alloy; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the catalyst particles and contact sites between the support and the catalyst particles, and has a coarsening temperature higher than that of the catalyst. A method for preparing the electrode catalyst is also disclosed. Additionally, disclosed is a method for preventing metal catalyst particles supported on a support and formed of a catalytically active metal or metal-containing alloy from coarsening, the method comprising: dispersing an anti-coarsening compound having a coarsening temperature higher than that of the metal catalyst, in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and contact sites between the support and the metal catalyst particles. The electrode catalyst is structurally stable while not causing degradation of electrochemical quality, and thus can improve the longevity properties of a fuel cell.

摘要翻译： 公开了一种电极催化剂，包括：（a）载体; （b）负载在载体上并由催化活性金属或含金属的合金形成的金属催化剂颗粒; 和（c）分散在选自催化剂颗粒间的间隙和载体与催化剂颗粒之间的接触位置的至少一个区域中的抗粗化化合物，其粗化温度高于 催化剂。 还公开了一种制备电极催化剂的方法。 此外，公开了一种防止金属催化剂颗粒负载在由催化活性金属或含金属的合金中粗大化形成的方法，该方法包括：将具有高于金属的粗化温度的抗粗化化合物 催化剂，在选自金属催化剂颗粒之间的间隙和载体与金属催化剂颗粒之间的接触位置的至少一个区域中。 电极催化剂结构稳定，不会导致电化学质量的降低，从而可以改善燃料电池的寿命性能。

公开(公告)号：US08470495B2

公开(公告)日：2013-06-25

申请号：US11488175

申请日：2006-07-18

申请人： Byungwoo Park ,  Chunjoong Kim ,  Myunggoo Kang ,  Jin Nam Park ,  Hyuk Kim ,  Min Suk Kim

发明人： Byungwoo Park ,  Chunjoong Kim ,  Myunggoo Kang ,  Jin Nam Park ,  Hyuk Kim ,  Min Suk Kim

IPC分类号： H01M4/38 ,  H01M8/10 ,  H01M8/06 ,  H01M8/14 ,  B01J27/00 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44

CPC分类号： H01M4/9083 ,  H01M4/8605 ,  H01M4/8828 ,  H01M4/921 ,  H01M4/925 ,  Y02E60/50 ,  Y10T29/49108

摘要： Disclosed is an electrode catalyst comprising: (a) a support; (b) metal catalyst particles supported on the support and formed of a catalytically active metal or metal-containing alloy; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the catalyst particles and contact sites between the support and the catalyst particles, and has a coarsening temperature higher than that of the catalyst. A method for preparing the electrode catalyst is also disclosed.

摘要翻译： 公开了一种电极催化剂，包括：（a）载体; （b）负载在载体上并由催化活性金属或含金属的合金形成的金属催化剂颗粒; 和（c）分散在选自催化剂颗粒间的间隙和载体与催化剂颗粒之间的接触部位的至少一个区域中的抗粗化化合物，其粗化温度高于 催化剂。 还公开了一种制备电极催化剂的方法。