公开(公告)号：US20230099371A1

公开(公告)日：2023-03-30

申请号：US17913761

申请日：2021-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuji TSUJITA ,  Keisuke ASAKA ,  Motohiro SAKATA

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode includes a composite oxide containing lithium and a transition metal, and an additive covering at least a portion of a surface of the composite oxide. The additive includes a metal oxide and a phosphate compound, and the phosphate compound has at least one intramolecular alkenyl group.

公开(公告)号：US20210167400A1

公开(公告)日：2021-06-03

申请号：US16479881

申请日：2018-02-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuya YAMASAKI ,  Hitoshi ISHIMOTO ,  Motohiro SAKATA

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1004

Abstract: A membrane electrode assembly includes an electrolyte membrane, and a pair of electrodes sandwiching the electrolyte membrane. The pair of electrodes each include a catalyst layer, and a gas diffusion layer disposed on the catalyst layer on an opposite side to the electrolyte membrane. At least one of the catalyst layers contains first catalyst particles, and second catalyst particles. The first catalyst particles are either platinum particles or platinum alloy particles, or both. The second catalyst particles are core-shell particles having a core part and a shell part, the core part formed of at least one selected from transition metals other than platinum, the shell part covering the core part and formed of at least one of platinum and a platinum alloy. In the catalyst layer, the second catalyst particles are present in a smaller percentage in an electrolyte membrane side than they are in a gas diffusion layer side.

公开(公告)号：US20210143460A1

公开(公告)日：2021-05-13

申请号：US16488193

申请日：2018-02-09

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hitoshi ISHIMOTO ,  Kazuya YAMASAKI ,  Motohiro SAKATA

IPC: H01M8/1004 ,  H01M4/86

Abstract: A membrane electrode assembly includes an electrolyte membrane, and a pair of electrode layers which sandwich the electrolyte membrane. The pair of electrode layers include a pair of catalyst layers which sandwich the electrolyte membrane, and a pair of gas diffusion layers disposed on the pair of catalyst layers on opposite sides to the electrolyte membrane. At least one catalyst layer contains a fibrous electric conductor, catalyst particles, a particulate electric conductor, and a proton-conductive resin. The at least one catalyst layer has a first region at a distance of 200 nm or less from the fibrous electric conductor, and a second region at a distance of more than 200 nm from the fibrous electric conductor. Pores are present in the first and second regions. A mode diameter M1 of the pores in the first region and a mode diameter M2 of the pores in the second region satisfy M1

公开(公告)号：US20190198906A1

公开(公告)日：2019-06-27

申请号：US16331666

申请日：2017-09-05

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Motohiro SAKATA ,  Takeshi MINAMIURA ,  Shinichiro IMURA ,  Hitoshi ISHIMOTO ,  Kazuya YAMASAKI ,  Chiho NOBUMORI ,  Yukihiro SHIMASAKI ,  Tsutomu FUJII

IPC: H01M8/22 ,  H01M8/0245 ,  H01M4/66 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/24

CPC classification number: H01M8/225 ,  H01M4/663 ,  H01M4/667 ,  H01M4/86 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/10 ,  H01M8/24

Abstract: Provided is a fuel cell catalyst layer including: a fibrous carbon material; catalyst particles; a particulate carbon material; and a proton-conductive resin, wherein a region A including at least the fibrous carbon material in a state of an agglomerated body and a region B including at least the catalyst particles, the particulate carbon material, and the proton-conductive resin are formed, the region A being disposed in an island form in the region B.