673886040@qq.com
Al-ion batteries for use as an inexpensive storage solution for the industry.
Swiss researchers from ETH Zurich have come up with two new technologies that are a stepping stone to the commercialization of Al-based batteries.
- The first is a corrosion-resistant coating material, titanium nitride (TiN) ceramic, for use in these batteries. The excellent oxidative stability of TiN-coated materials enabled these batteries to attain a high energy density, high coulombic efficiency, and high cycling ability. Due to the excellent corrosion resistance of TiN current collectors, they could even be used as high-voltage cathode materials in Mg-, Na-, or Li-ion batteries.
- Another promising solution is the use polypypyrenes as a high-performance cathode material for Al-ion batteries. These batteries typically use a graphite-based cathode, which gets distorted due to the chloroaluminate anions. Using a custom-made cell, the researchers tested polypyrene and its derivative poly(nitropyrene-co-pyrene) as cathode materials and found that it stores the same amount of energy as a graphite cathode. Moreover, polypyrenes offer numerous other possibilities for developing rechargeable Al-ion batteries, including low cost, high abundance, production scalability, and compositional and structural tunability.
Schematic of the working principle of a rechargeable aluminum battery during charge with a polypyrene cathode and chloroaluminate ionic liquid. Advanced Materials
These research efforts show great promise towards commercializing Al-ion batteries for use as an inexpensive storage solution for the industry.
