Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Hasuck Kim

Chan-hee Park

Ho-Jin Kweon

Chan Kwak

Myoung-Ki Min

Hye-A Kim

Ji-Hwan Kim

Young-Hwan Choi

Ju-hyun Kim

Hyun-Bae Kim

Hye-jin Kim

A voltage generator includes a pulse circuit and a slope circuit. The pulse circuit is to apply voltages of three different levels to an output terminal and the slope circuit is to apply a slope voltage to the output terminal. The slope circuit includes an inductor to take current out of a capacitive load connected to the output terminal.

Voltage generator, voltage waveform generator, semiconductor device manufacturing apparatus, voltage waveform generation method, and semiconductor device manufacturing method

The catalyst for a fuel cell of the present invention includes a compound including at least one element selected from the group consisting of silicon, aluminum, and titanium, and a catalytic metal.

Catalyst for a fuel cell, a method of preparing the same, and a fuel cell system comprising the same

The present invention includes a catalyst for a fuel cell which contains a transition element core, and a surface layer that contains at least one selected from the group including platinum, a platinum-transition element alloy, and a combination thereof, and that exists on the surface of the core. The catalyst being prepared without a surfactant.

Catalyst for fuel cell, method for preparing the same, and membrane-electrode assembly and fuel cell system comprising same

Growing community of inventors

Suwon-si, South Korea

Chan-hee Park