Amotech Co., Ltd.

Korea Institute of Ceramic Engineering and Technology

Youn-Woo Hong

Dong-Hun Yeo

Jong Hee Kim

Hyo Soon Shin

Sang Ok Yoon

Jun-Hwan Jeong

Sang-Sub Roh

Hyo-Soon Shin

Kyung-Pyo Hong

Disclosed herein is a ZnO-based varistor composition including zinc oxide (ZnO) as a main component and a calcium (Ca)-containing compound as an accessory component. The varistor composition provides excellent electrostatic discharge (ESD) characteristics because it has excellent physical properties, such as a nonlinear coefficient, a clamping voltage ratio, a surge absorbance and the like, and, particularly, does not include BiO. Further, the varistor composition provides high work safety because it does not include SbOthat is regulated for environmental purposes. Further, the varistor composition can reduce the manufacturing cost of a varistor because it does not Pr-based components that require high-temperature sintering and increase the manufacturing cost of a varistor. Particularly, the varistor composition has a low clamping voltage as well as a low capacitance.

ZnO-based varistor composition

Provided are a solid oxide fuel cell and a method of manufacturing the same. The solid oxide fuel cell in which at least one or more unit modules are stacked and integrated with each other includes first and second solid electrolyte layers in which each of the unit modules includes a plurality of fuel electrodes spaced a predetermined distance from each other and each having a strip shape and first and second supports each including a plurality of slits each having the same strip shape as that of each of the fuel electrodes. The first and second solid electrolyte layers overlap with each other on lower and upper sides of the first support so that the fuel electrodes face each other within the slits of the first support, and the second support overlaps with a lower side of the first or second solid electrolyte layer overlapping with the lower side of the first support so that the slits of the second support are disposed perpendicular to the slits of the first support. The slits of the first and second supports define fuel paths and air paths, respectively.

Solid oxide fuel cells and manufacturing method thereof

Growing community of inventors

Daegu, South Korea

Youn-Woo Hong