Zhejiang University scientists use graphene membrane as the cathode material, developed a new type of aluminum - graphene battery. This long battery life, can be fully charged in a very short period of time, in the minus 40 ℃ to 120 ℃ temperature range can work properly. This innovation pointed out an important direction for the practical application of aluminum ion batteries. Aluminum ion battery is a good new battery, the key to practical use is to find a suitable cathode material. Zhejiang University Department of polymer superconducting Professor selected graphene group this magical material, with innovative technology to prepare a unique graphene film as the cathode material, greatly enhance the overall performance of aluminum ion batteries, and now the mainstream of lithium batteries and supercapacitor phase The prospect of contending is very optimistic. Related papers recently published in the international well-known periodical "scientific progress." "The capacity of the battery shows its endurance.Generally, the capacity of the battery decreases with repeated charge and discharge, which is what we call" non-durable. "" Superb said, "aluminum-graphene battery at this point The battery performs 25 million charge-discharge cycles, with a charge-discharge efficiency of up to 91% and a small capacity loss. "That said, if your smartphone uses 10 times a day on a battery, Can be used for nearly 70 years. This aluminum-graphene battery is also excellent in rate performance, allowing fast charging at high currents while maintaining a high specific capacitance. "Now some smart phones also have fast charge function, it seems that the battery is full soon, the actual battery life is not long." Superb said, and this new battery now laboratory data is 1.1 seconds can be fully charged, than Low capacitance loss. "In the future, if you use your cellphone, charging for 5 seconds calls for 2 hours is entirely possible." "Aluminum - graphene batteries in the rate performance, cycle life does not lose super capacitor, far exceeding the lithium battery. Although the energy density and lithium battery is still a gap, but significantly surpassed the super capacitor." Super said that in the face of lithium batteries and The two supercapacitors, the aluminum-graphene battery, respectively, showed a specific advantage, which can be called "super-battery." Aluminum - graphene batteries and some other current battery unmatched characteristics. Low temperature to minus 40 ℃, aluminum - graphene battery is still stable charge and discharge 1000 times, high temperature to 100 ℃, stable charge and discharge 45,000 times, even if the cell is exposed to the flame will not fire or explosion. This wide temperature range provides the basis for the future use of aluminum ion batteries under extreme temperatures. This battery is also very flexible, fully maintained after 10,000 turns, demonstrating potential in wearable flexible electronic devices. The excellent performance of "super batteries" stems from the excellent microstructure of the graphene film as a cathode material and the macroscopic performance it exhibits. Many of the important properties of a battery are excellent, depending on how smoothly the electrons and ions flow between the positive and negative electrodes. Compared to other cathode materials, the advanced research group prepared graphene film, high quality crystal lattice defects, highly oriented, with continuous channels, like the ease of the highway, so that electrons and ions unimpeded.