Abstract
The proton battery is a very novel emerging research area with practicability. The proton battery has charging and discharging functions. It not only electrolyzes water: the electrolyzed protons can be stored but also released, which are combined with oxygen to generate electricity, and the hydrogen is not required; the hydrogen ions will be released from the battery. According to the latest document, the multiple important physical parameters (e.g., hydrogen, voltage, current, temperature, humidity, and flow) inside the proton battery are unlikely to be obtained accurately and the multiple important physical parameters mutually influence the data; they have critical effects on the performance, life, and health status of the proton battery. At present, the proton battery is measured only from the outside to indirectly diagnose the health status of battery; the actual situation inside the proton battery cannot be obtained instantly and accurately. This study uses micro-electro-mechanical systems (MEMS) technology to develop a low-temperature micro hydrogen sensor, which is used for monitoring the internal condition of the proton battery and judging whether or not there is hydrogen leakage, so as to enhance the safety.
Highlights
The fuel cell technology has been universally used in extensive domains, but there are still many problems to be solved and overcome, such as the volume and weight of the fuel cell and the storage of hydrogen
In comparison to the proton exchange membrane fuel cell (PEMFC), the proton battery is rechargeable and free from hydrogen and the hydrogen ions will be released from the battery
Most mainstream fuel cells store the hydrogen in the hydrogen storage tank, and the hydrogen storage tank is installed on the vehicle, e.g., automobile and generator
Summary
The fuel cell technology has been universally used in extensive domains, but there are still many problems to be solved and overcome, such as the volume and weight of the fuel cell and the storage of hydrogen. In the proton battery charging process, the water is decomposed with the assistance of a power supply to generate hydrogen ions, which are stored in porous carbon-based material as a hydrogen storage electrode. Folonari and Condon et al [2,3] indicated that the new kind of fuel cell composed of hydride electrode and solid electrolyte has higher energy density and more compact simple structure and keeps the advantages of traditional fuel cell This kind of structure can significantly enhance the reliability and performance of electric vehicles. Bosch et al [9] indicated that as the hydrogen storage characteristic of nanostructure of carbon was known, the larger surface area and improved material could enhance the feasibility of rechargeable proton battery with high energy density and high hydrogen storage capacity. The data are obtained only from outside of proton battery, so this study uses micro-electro-mechanical systems (MEMS) technology to develop a low-temperature flexible micro hydrogen sensor, which is embedded in the proton battery for real-time microscopic detection, so as to judge whether there is hydrogen leakage to enhance the safety
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