Jülich and ORNL Develop Iron-Air Battery: Electrode Accumulator Improves Battery Capacity

According to foreign media reports, iron-air batteries (Iron air batteries) energy density is much higher than the current lithium-ion battery. In addition, the reserves of its main constituent "iron" are very rich, and the price of the material is also very cheap. For this reason, the Forschungszentrum Jülich is also working on the concept of this iron-air battery (proposed in the 1970s).

Due to difficult technical problems to overcome, since the 1980s, metal-air battery research has been abandoned for a long time. However, research and development interests in this area have been growing in recent years. Iron - air battery through the reaction of iron and oxygen to obtain energy. During the reaction, the iron oxidation process is almost the same as the rusting process. The reaction requires the oxygen in the surrounding air to react, eliminating the need to consider the battery's oxygen storage. As a result of material costs savings, research institutions have started to develop iron - air batteries.

Yuelch Research Center and Oak Ridge National Laboratory (ORNL) have successfully observed the formation of accumulators on the ferroelectrics during the operation of the cell. The accuracy of the observations can reach nanometers. To further develop the iron-air battery and reach the market maturity level, its deep understanding of the charge-discharge reaction is crucial. The research has been published in the journal Nano.

It is estimated that the theoretical energy density of iron-air cells is 1200 Wh / kg, compared with the current energy density of 600 Wh / kg for lithium-ion batteries. Taking into account the weight of the cell case, the energy density Will be below 350 Wh / kg.

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