公开(公告)号：EP4129438A1

公开(公告)日：2023-02-08

申请号：EP21775676.6

申请日：2021-03-23

申请人： N.E. Chemcat Corporation

发明人： NISHIBETTOU, Makoto ,  SEKI, Yasuhiro ,  TAKENOYA, Akinobu ,  NAGAMORI, Kiyotaka ,  IGARASHI, Hiroshi ,  SHIINA, Hiroki ,  TAMURA, Mie

IPC分类号： B01D25/12 ,  F26B11/16 ,  H01M4/88 ,  B01J37/04 ,  B01J37/06 ,  B01J37/14 ,  H01M8/10 ,  B01J23/42

摘要： Provided are an electrode catalyst production system and production method capable of omitting the operation for an operator to transfer an electrode catalyst precursor, and shortening a drying time of the electrode catalyst precursor. The invention is configured as follows. An electrode catalyst production system 10 has an electrode catalyst precursor production device 12, a washing device 13 and a drying device 14. The drying device 14 includes executors for executing:
an introduction step S31 for introducing an electrode catalyst precursor into a container main body 202;
a drying processing step S32 for drying the electrode catalyst precursor by heating and depressurizing the container main body 202, and stirring and mixing the electrode catalyst precursor with a stirring blade 204;
a cooling step S33 for cooling the electrode catalyst precursor by cooling and depressurizing the container main body 202, and stirring and mixing the electrode catalyst precursor with the stirring blade;
a slow oxidation step S34 for performing a slow oxidation treatment on the electrode catalyst precursor by supplying air to the container main body 202; and
a retrieving step S35 for retrieving the electrode catalyst precursor inside the container main body 202.

公开(公告)号：EP4131516A1

公开(公告)日：2023-02-08

申请号：EP21776236.8

申请日：2021-03-16

申请人： N.E. Chemcat Corporation

发明人： WADA, Yoshiyuki ,  MIZUSAKI, Tomoteru ,  NAGAMORI, Kiyotaka ,  AOKI, Satoshi ,  SHIINA, Hiroki ,  SEKI, Yasuhiro

IPC分类号： H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M4/96 ,  H01M8/10 ,  B01J23/42

摘要： The present invention provides an electrode catalyst which has excellent catalytic activity, and which can contribute to reducing the cost of a polymer electrolyte fuel cell (PEFC). According to the present invention, an electrode catalyst includes a hollow carrier including nanopores having a pore size of 1 to 20 nm, and a plurality of catalyst particles. The catalyst particles are supported both inside and outside the nanopores of the carrier, and comprise (zero-valent) Pt, and when a particle size distribution analysis of the catalyst particles is carried out using a three-dimensional reconstructed image obtained by electron beam tomography measurement employing STEM, the conditions of formula (S1): 100×(N10/N20)≤8.0 are satisfied (in the formula, N10 is the number of noble metal particles not in contact with a pore having a pore size of 1 nm or more, and N20 is the number of catalyst particles supported inside the nanopores of the carrier).