公开(公告)号：US20220085386A1

公开(公告)日：2022-03-17

申请号：US17470120

申请日：2021-09-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Sang Moon KIM ,  Changwook SEOL ,  Segeun JANG

IPC: H01M4/88 ,  H01M8/1004 ,  H01M4/86

Abstract: The present disclosure relates to a membrane electrode assembly including: a polymer electrolyte membrane; an anode catalyst layer formed on one side of the polymer electrolyte membrane; a cathode catalyst layer formed on the other side of the polymer electrolyte membrane; and a porous carbon layer formed on the cathode catalyst layer on the side opposite to the side contacting with the polymer electrolyte membrane and comprising a polymer binder and a carbon particle, and a fuel cell including the same. The present disclosure can prevent water evaporation from an electrolyte under low-humidity environment while minimizing decrease in performance under high-humidity operating environment and can improve fuel cell performance by facilitating the back diffusion of water generated at the cathode.

公开(公告)号：US20210086194A1

公开(公告)日：2021-03-25

申请号：US17023685

申请日：2020-09-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong-Sang RYU ,  Eui-Sang YU ,  Taehyun KIM ,  Sang Moon KIM ,  Jongsu LEE

IPC: B03C3/09 ,  B03C3/68 ,  B03C3/47 ,  B03C3/70 ,  F24F3/16

Abstract: An air conditioning apparatus is provided. The air conditioning apparatus includes: a filter configured to have a first conductor layer, an insulating layer having a thickness in the range of 5 nm to 1000 nm, and a second conductor layer which are sequentially stacked, and include a plurality of holes penetrating through the first conductor layer, the insulating layer, and the second conductor layer; a fan assembly configured to suck air from the outside and provide the sucked air to the filter; a power supply device configured to provide alternating current power between the first conductor layer and the second conductor layer; and a processor configured to control the power supply device to selectively vary a frequency or a voltage magnitude of the alternating current power provided to the filter.