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Abstract
To prolong the operating time of unmanned aerial vehicles which use proton exchange membrane fuel cells (PEMFC), the performance of PEMFC is the key. However, a long-term operation can make the Pt particles of the catalyst layer and the pollutants in the feedstock gas bond together (e.g., CO), so that the catalyst loses reaction activity. The performance decay and aging of PEMFC will be influenced by operating conditions, temperature, flow and CO concentration. Therefore, this study proposes the development of an internal real-time wireless diagnostic tool for PEMFC, and uses micro-electro-mechanical systems (MEMS) technology to develop a wireless and thin (<50 μm) flexible integrated (temperature, flow and CO) microsensor. The technical advantages are (1) compactness and three wireless measurement functions; (2) elastic measurement position and accurate embedding; (3) high accuracy and sensitivity and quick response; (4) real-time wireless monitoring of dynamic performance of PEMFC; (5) customized design and development. The flexible integrated microsensor is embedded in the PEMFC, three important physical quantities in the PEMFC, which are the temperature, flow and CO, can be measured simultaneously and instantly, so as to obtain the authentic and complete reaction in the PEMFC to enhance the performance of PEMFC and to prolong the service life.
Highlights
The crude oil price rose in recent years, and various countries actively developed new alternative energy sources, such as solar energy, wind power, hydrogen energy, hybrid electric vehicles and all electric vehicles, which are green energy
The flexible integrated microsensor is embedded in the proton exchange membrane fuel cell (PEMFC), three important physical quantities in the PEMFC, which are the temperature, flow and CO, can be measured simultaneously and instantly, so as to obtain the authentic and complete reaction in the PEMFC to enhance the performance of PEMFC and to prolong the service life
The hydrogen ions penetrate through the Proton Exchange Membrane (PEM) to the cathode, reacting with oxyanions to form water, and the electrons are transmitted by carbon paper to the bipolar plates (BP)
Summary
The crude oil price rose in recent years, and various countries actively developed new alternative energy sources, such as solar energy, wind power, hydrogen energy, hybrid electric vehicles and all electric vehicles, which are green energy. The proton exchange membrane fuel cell (PEMFC) is characterized by high power density, low operating temperature, quiet operation and lower corrosion, reduced laminated design, quick start and shutdown [1]. The hydrogen ions penetrate through the Proton Exchange Membrane (PEM) to the cathode, reacting with oxyanions to form water, and the electrons are transmitted by carbon paper to the BP to generate electric energy. Jiang et al [9] developed a PdNi thin film hydrogen gas sensor with integrated Pt thin film temperature sensor was designed and fabricated using the micro-electro-mechanical systems (MEMS) process. Our research team has successfully developed wired multi-function microsensors for vanadium redox flow battery [13], high temperature proton exchange membrane fuel cell [14] and lithium ion battery [15]. This paper proposes the development of internal real-time wireless diagnostic tool for PEMFC, and uses micro-electro-mechanical systems (MEMS) technology to develop a wireless and thin (
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