The electrode material successfully underwent 5,000 charge cycles, retaining 88% of its capacity at 10 C, marking a significant advancement in aluminum battery development. A research group has created an organic redox polymer for use as a positive electrode in aluminum-ion batteries.
Rechargeable aluminum batteries with aluminum metal as a negative electrode have attracted wide attention due to the aluminum abundance, its high theoretical capacity and stability under ambient conditions.
In contrast, the discharge capacity of graphite as electrode material in aluminum batteries is 120 mAh/g. After 5,000 charge cycles, the battery presented by the research team still has 88 percent of its capacity at 10 C, i.e. at a charge and discharge rate of 6 minutes.
Researchers have developed a positive electrode material for aluminum-ion batteries using an organic redox polymer, which has shown a higher capacity than graphite. The electrode material successfully underwent 5,000 charge cycles, retaining 88% of its capacity at 10 C, marking a significant advancement in aluminum battery development.
Aluminium-ion batteries containing this material stored an unprecedented 167 milliampere hours per gram, outperforming batteries using graphite as electrode material. Aluminium-ion batteries are considered a promising alternative to conventional batteries that use scarce raw materials such as lithium.
Aluminum batteries: Aluminum metal presents appealing properties as anode material for aluminum batteries. However, its initial surface properties are underappreciated. The performance of the device is greatly influenced by the purity, surface finishing and hardness of the aluminum metal.