Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-02-27 Hits: Popular:AG11 battery
(1)AFC: Compared with other fuel cells, AFC has higher power density and specific power and reliable performance. However, it uses pure hydrogen as fuel, pure oxygen as oxidant, and must use precious metals such as PT, Au, and Ag as catalysts, which are expensive. The corrosion of the electrolyte is serious and the life is short. These characteristics determine that AFC is limited to aerospace or special applications and is not suitable for civilian use.
(2) pAFC: Using phosphoric acid as the electrolyte, it can tolerate the presence of CO2 in fuel gas and air. This makes pAFC the first fuel cell to be applied on the ground or for civilian use. Compared with AFC, it can operate at 180°C to 210°C. The fuel gas and air processing system is greatly simplified. When running under pressure, it can form a cogeneration of heat and power. However, the power generation efficiency of pAFC can currently only reach 40% to 45% (LHV). It requires precious metal platinum as an electrocatalyst; the fuel must be externally reformed: and the concentration of CO in the fuel gas must be less than 1% (175℃) - 2% (200℃), otherwise the catalyst will be poisoned; the corrosive effect of the acidic electrolyte will make it difficult for the pAFC life to exceed 40,000 hours. pAFC's current technology has matured and its products have entered commercialization. As a distributed power supply, on-site portable power supply and backup power supply for special users, pAFC still has a market, but it is difficult to use it as a large-capacity centralized power station.
(3) MCFC: operating at 650°C to 700°C, nickel can be used as the electrocatalyst instead of precious metals: the fuel can be internally reformed, which improves power generation efficiency and simplifies the system; CO can be directly used as fuel; waste heat can be used The temperature is higher and a gas/steam combined cycle can be formed to further increase the power generation capacity and efficiency. Compared with SOFC, the advantages of MCFC are: lower operating temperature, lower-priced metal materials can be used, simple manufacturing process of electrodes, separators, and bipolar plates, relatively small technical difficulties in sealing and assembly, and easy to increase capacity , lower cost. The disadvantages are: a CO2 circulation system must be configured; H2S and CO in the fuel gas are required to be less than 0.5ppM; molten carbonate is corrosive and volatile; compared with SOFC, the life is shorter; the efficiency of combined cycle power generation is lower than SOFC . Compared with low-temperature fuel cells, the disadvantage of MCFC is that it takes a long time to start up and is not suitable for backup power supply. MCFC is close to commercialization, and the scale of the demonstration power plant has reached 2MW. Judging from the technical characteristics and development trends of MCFC, MCFC is one of the ideal choices for future civil power generation (distributed power sources and central power stations).
(4) SOFC: The electrolyte is a solid and can be made into a tube shape, a plate shape or a whole shape. Compared with liquid electrolyte fuel cells (AFC, pAFC and MCFC), SOFC avoids the problems of electrolyte evaporation and corrosion of battery materials, and the battery has a longer life (has reached 70,000 hours). CO can be used as fuel, making it possible for fuel cells to use gas as fuel. The operating temperature of SOFC is around 1000°C, and the fuel can be reformed within the cell. Due to the high operating temperatures, sealing between metal and ceramic materials is also difficult. Compared with low-temperature fuel cells, SOFC has a longer start-up time and is not suitable for emergency power supply. Compared with MCFC, SOFC's combined cycle has higher efficiency and longer life (can be greater than 40,000 hours); however, SOFC faces greater technical difficulties and may be more expensive than MCFC. Demonstration performance proves that SOFC is one of the ideal choices for future fossil fuel power generation technology. It can be used as both a small and medium-capacity distributed power supply (500kw-50MW) and a large-capacity central power station (>100MW). In particular, the demonstration of combining pressurized SOFC with micro gas turbine to form a combined cycle power generation will further demonstrate the advantages of SOFC.
(5) pEFC: pEpC has a low operating temperature (about 80°C), its startup time is very short, and it can reach full load within a few minutes. Compared with pAFC, the current density and specific power are higher, the power generation efficiency is also higher (45% to 50% (LHV)), and the allowable value of CO is higher (<10ppm). The waste heat temperature of pEFC is low and the heat utilization rate is low. Compared with liquid electrolyte fuel cells such as pAFC and MCFC, it has the characteristics of long life and reliable operation. pEFC is an ideal portable power supply and one of the ideal choices for power supplies for mobile tools such as electric vehicles, special applications, and spacecraft. At present, there is a certain market in mobile power supplies, distributed power supplies for special users and household power supplies, which are not suitable for large-capacity central power stations.
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