公开(公告)号：US10923733B2

公开(公告)日：2021-02-16

申请号：US16256905

申请日：2019-01-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

Inventor： Kyung Joong Yoon ,  Yun Jung Lee ,  Ji-su Shin ,  Mansoo Park ,  Ho Il Ji ,  Hyoungchul Kim ,  Ji-Won Son ,  Jong Ho Lee ,  Byung Kook Kim ,  Hae-Weon Lee

IPC: H01M4/00 ,  H01M4/90 ,  H01M8/1246 ,  H01M4/86 ,  H01M8/124

Abstract: The present disclosure relates to a nanocatalyst for an anode of a solid oxide fuel cell and a method for preparing the same. More particularly, the present disclosure relates to a nanocatalyst for an anode of a solid oxide fuel cell obtained by forming a ceramic nanocatalyst including a noble metal dispersed therein in an atomic unit and contained in an ionic state having an oxidation number other than 0 through an in situ infiltration process in the internal pores of a porous electrode, and to application of the nanocatalyst to a solid oxide fuel cell having significantly higher electrochemical characteristics as compared to the solid oxide fuel cells including the conventional nickel-based anode and oxide anode, and particularly showing excellent characteristics at an intermediate or low temperature of 600° C. or less.

公开(公告)号：US10483550B2

公开(公告)日：2019-11-19

申请号：US15630471

申请日：2017-06-22

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Joong Yoon ,  Seung-Hwan Lee ,  Mansoo Park ,  Jongsup Hong ,  Hyoungchul Kim ,  Ji-Won Son ,  Jong Ho Lee ,  Byung Kook Kim ,  Hae-Weon Lee

IPC: H01M4/88 ,  H01M4/90 ,  H01M8/12 ,  H01M8/1253 ,  H01M8/124

Abstract: Provided is a solid oxide cell including a fuel electrode layer, electrolyte layer and an air electrode layer, wherein a diffusion barrier layer is provided between the air electrode layer and the electrolyte layer, the diffusion barrier layer includes: a first diffusion barrier layer formed on the electrolyte layer and including a sintered ceria-based metal oxide containing no sintering aid; and a second diffusion barrier layer formed on the first diffusion barrier layer and including a sintered product of a ceria-based metal oxide mixed with a sintering aid, the first diffusion barrier layer includes a sintered product of nanopowder and macropowder of a ceria-based metal oxide, and the first diffusion barrier layer and the second diffusion barrier layer are sintered at the same time. The diffusion barrier layer is densified, shows high interfacial binding force and prevents formation of a secondary phase derived from chemical reaction with the electrolyte.

公开(公告)号：US09966624B2

公开(公告)日：2018-05-08

申请号：US15346105

申请日：2016-11-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Joong Yoon ,  Seung-Hwan Lee ,  Mansoo Park ,  Jongsup Hong ,  Hyoungchul Kim ,  Ji-Won Son ,  Jong Ho Lee ,  Byung Kook Kim ,  Hae-Weon Lee

IPC: H01M8/12 ,  H01M8/1253 ,  H01M8/126 ,  H01M8/124

CPC classification number: H01M8/1253 ,  C01F17/0018 ,  C01G51/006 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/04 ,  C04B35/50 ,  C04B35/6281 ,  C04B35/62815 ,  C04B35/62823 ,  C04B35/62886 ,  C04B35/62892 ,  C04B2235/3203 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/443 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/9615 ,  H01M8/126 ,  H01M2008/1293 ,  H01M2300/0074 ,  H01M2300/0077

Abstract: Provided is a method for manufacturing a sintered body for an electrolyte and an electrolyte for a fuel cell using the same. More particularly, the following disclosure relates to a method for preparing an electrolyte having a firm thin film layer by using a sintered body having controlled sintering characteristics, and application of the electrolyte to a solid oxide fuel cell. It is possible to control the sintering characteristics of a sintered body through a simple method, such as controlling the amounts of crude particles and nanoparticles. In addition, an electrode using the obtained sintered body having controlled sintering characteristics is effective for forming a firm thin film layer. Further, such an electrolyte having a firm thin film layer formed thereon inhibits combustion of fuel with oxygen when it is applied to a fuel cell, and thus shows significantly effective for improving the quality of a cell.