Japan has officially launched the development of a new fuel cell fueled with ammonia (NH3). This is part of the “Energy Carriers for Advanced Low-Carbon Technology Development (ALCA) Special Key Technology Area†promoted by Japan’s Ministry of Education, Culture, Sports, Science and Technology (JST) and Professor Jiangkou of the Graduate School of Engineering, Kyoto University. Hao Yi led. The advantage of using NH3 as a fuel is that its volumetric hydrogen concentration is 12.1 kg/(100L), which is higher than 7.06 kg/(100L) of liquid hydrogen. In addition, the liquefaction temperature of NH3 at a standard atmospheric pressure is 25°C, which is extremely easy to handle compared with -242°C of liquid hydrogen. Although there are also technologies for producing hydrogen using hydrocarbon (CH) fuels, carbon monoxide (CO), carbon dioxide (CO2) and the like are produced by this method, and therefore there is a problem in low carbonization. Prof. Jiangkou's research object includes two types of solid polymer fuel cell (PEFC) and solid oxide fuel cell (SOFC). The actual intention is to realize SOFC. The operating temperature of the SOFC is as high as 700 to 900°C. Therefore, NH3 can be directly reacted with oxygen (O2) to generate electricity (Fig. 1). In addition, in addition to the direct reaction, an indirect reflection is considered even if NH3 is decomposed into hydrogen (H2) and nitrogen (N2), and then hydrogen is used therein. Figure 1: Example of SOFC Fueled with NH3 For SOFC fueled with NH3, the candidate for the positive electrode is a nickel (Ni)-based cermet, the candidate for the electrolyte membrane is a partially stabilized zirconium (Zr)-based ceramic, and the candidate for the negative electrode is a manganese oxide added with a terbium-based material (( La, Sr)MnO3). It is estimated that the SOFC made of the above materials will have a power generation efficiency that exceeds that of the existing SOFC by 45%. If indirect reactions are to be carried out, the catalyst materials used in the decomposition of NH3 should also be developed. Candidate materials currently under consideration include iron (Fe), cobalt (Co), nickel, and ruthenium (Ru). PEFC has a problem that the solid polymer film deteriorates due to NH3. Therefore, using a molten salt catalyst to decompose NH3 into hydrogen and nitrogen in an environment below 650°C, and then removing NH3 in an environment below 400°C, the concentration of NH3 in hydrogen is reduced to 0.1 ppm or less. Since it is necessary to remove most of the NH3, it is estimated that this will become a major technical issue. Pvc Doors,Solid Pvc Door,Pvc Bifold Door,Pvc Concertina Doors Foshan QI'AN Fireproof Shutter Doors Co., Ltd , https://www.fsqianfiredoor.com