Samsung Electronics Co., Ltd.

Hyundai Hysco

Hyundai Steel Company

Ki-Jung Kim

Yoo-Taek Jeon

Sung-Won Park

Jung-Youel Bang

Hyung-Bin Noh

Eun-Young Kim

Jun-Hui Lee

Ji-Young Park

Man-Been Moon

In-Kyu Choi

Yeon-Soo Jeong

Jong-Chan Lee

An electronic device is provided. The electronic device includes a battery; a display; a circuit board provided at a rear of the battery; and at least one second antenna provided at a rear of the battery, wherein the at least one second antenna includes a magnetic body and a conducting wire that is wound around the magnetic body multiple times in a first direction with respect to a first axis that is substantially parallel with a surface of the display.

Antenna and electronic device with the same

Disclosed is an electronic device having an enhanced emission capability and including battery, at least one first antenna provided at a front of the battery, and at least one second antenna provided at a rear of the battery, wherein the at least one first antenna and the at least one second antenna may include a magnetic body and a conducting wire that is wound around the magnetic body multiple times.

Disclosed are a metal separation plate for a fuel cell stack, which includes protrusion patterns each having an air path opened in a short-side direction or protrusion patterns each having an air path of which one side is opened and the other side is closed, and can not only improve cooling performance and stack performance without a separate cooling plate mounted therein, and but also improve humidification performance of a membrane electrode assembly (MEA) by blocking moisture leaking from the inside of the closed air paths, and a fuel cell stack having the same.

Metal separation plate for fuel cell stack and fuel cell stack having the same

A keyboard and mobile device are provided that include a plurality of keys installed in the keyboard or mobile device, and a radio frequency antenna device mounted below the plurality of keys.

Keyboard and mobile device with radio frequency antenna

Disclosed herein is a method for manufacturing a metal steel separator for fuel cells that has corrosion resistance and contact resistance not only at an initial stage but also after being exposed to high temperature/high humidity conditions in the fuel cell for a long period of time. The method includes preparing a stainless steel sheet as a matrix of the metal separator, forming a discontinuous coating film on the surface of the stainless steel sheet, the coating film being composed of at least one selected from gold (Au), platinum (Pt), ruthenium (Ru), iridium (Ir), ruthenium oxide (RuO), and iridium oxide (IrO), and heat treating the stainless steel sheet having the discontinuous coating film to form an oxide film on a portion of the stainless steel sheet on which the coating film is not formed. A metal separator for fuel cells manufactured by the method is also disclosed.

Metal separator plate for fuel cell having coating film formed on surface and method for producing same

Disclosed are a metal separator for fuel cells, which exhibits excellent properties in terms of corrosion resistance, electrical conductivity and durability, and a method of manufacturing the same. The metal separator for fuel cells includes a separator-shaped metal matrix and a coating layer formed on the metal matrix. The coating layer has a concentration gradient of a carbon element C and a metal element Me according to a thickness thereof such that the carbon element C becomes gradually concentrated in the coating layer with increasing distance from the metal matrix, and the metal element Me becomes gradually concentrated in the coating layer with decreasing distance from the metal matrix.

Growing community of inventors

Gyeonggi-do, South Korea

Ki-Jung Kim