The high-iron battery is a synthetic stable ferrate (K2FeO4, BaFeO4, etc.), which can be used as a positive electrode material for high-iron batteries to produce a new type of chemical battery with high energy density, small volume, light weight, long life and no pollution.
Advantages of iron batteries: High energy and high capacity. At present, the commercial battery has a specific power of only 60-135w/kg, while the high-iron battery can reach 1000w/kg or more, and the discharge current is 3-10 times that of the ordinary battery. It is especially suitable for applications requiring high power and high current. High-speed rail batteries are cost-effective. Alkaline-manganese batteries can't meet the needs of electronic products such as digital cameras and cameras that require large current and large-capacity electricity. Lithium-ion batteries are not very competitive in terms of cost.
The high-iron battery discharge curve is flat. For example, Zn-K2FeO4, 70% or more discharge time is 1.2-1.5V.
Rich in raw materials. The most abundant elements in the earth's crust are aluminum and iron. The iron content in the earth's crust is 4.75% and the manganese content is 0.088%. At the same time, each mol+6 valent iron can produce 3 mol of electrons, and each mol+4 valence manganese can only produce 1 mol of electrons. The amount of iron is only 1/3 of that of manganese, which greatly saves social resources. Reduce the cost of raw materials. On the market, MnO2 is about 9,000 yuan / ton, and Fe (NO3) 3 is about 7,500 yuan / ton.
Green is pollution free. The product after ferrate discharge is FeOOH or Fe2O3-H2O, which is non-toxic, non-polluting and environmentally friendly. No recycling is required.
Introduction to the principle of high-speed battery technology At present, countries all over the world are taking different measures to develop new energy sources for automobiles and further reduce the pollution caused by automobile exhaust. Some new energy sources are continuously used in modern automobiles, such as natural gas and hydrogen energy. , electric energy, fuel cells, etc., and fuel cells are a direction of research by various auto manufacturers and scientific research institutions.
In the current fuel cell technology, there is a new battery technology----iron battery technology. At present, iron batteries studied at home and abroad include high-iron batteries and lithium iron pools. The high-iron battery is made of synthetically stable ferrate (K2FeO4, BaFeO4, etc.) as a positive electrode material for high-iron batteries. It has a new type of chemical battery with high energy density, small volume, light weight, long life and no pollution. The other is a lithium iron battery, mainly an iron phosphate battery. The open circuit voltage is 1.78V-1.83V, the working voltage is 1.2V-1.5V, which is 0.2-0.4V higher than other primary batteries, and the discharge is stable, pollution-free and safe. Excellent performance.