Introduction:

      According to reports, scientists at Zhejiang University have developed an "aluminum graphene battery", known as a super battery. The capacitance will not be reduced, and it can be used for nearly 70 years. Temperatures below 40 to 120 degrees Celsius can also work normally.

     Scientists at Zhejiang University have developed a new type of aluminum graphene battery using graphene film as cathode material. The battery has a long life and can be filled with electricity in a very short time. It works normally in the temperature range from 40 to 120 degrees below zero. This innovation has pointed out an important direction for the practicability of aluminum ion batteries.

     The research and development of super battery "aluminum graphene battery" by Zhejiang University can work normally at 40 -120 below zero.

Aluminum ion battery is an excellent new type of battery. The key to its application is to find suitable cathode materials. The super professor of Zhejiang University has chosen graphene as a magic material. The unique graphene film is prepared by innovative technology as a positive material, which greatly improves the overall performance of the aluminum ion battery. It is ten good for the current prospects of the mainstream lithium battery and supercapacitor. Related papers were published in the famous international journal "science progress" recently.

    “ The capacity of the battery shows its endurance. With the repeated charging and discharging, the capacitance of the ordinary battery will decrease continuously, which is what we call "undurable". "Aluminum graphene battery is excellent at this point," Gao said. The battery has undergone 250 thousand charge discharge cycles, and the charging and discharging efficiency is still up to 91%, and the capacity loss is very small. In other words, if smart phones use such batteries, they can be used for nearly 70 years, even if they charge 10 times a day.

     The aluminum graphene battery has excellent performance in magnification. It can charge quickly under high current and maintain high specific capacity. "Now some smart phones also have fast charging function. It seems that the battery is fast enough, and the actual life time is not long." The lab data of this new type of battery now can be filled with electricity for 1. seconds, which is slightly less than the capacity loss. "If you use mobile phones in the future, charging 5 seconds to talk for 2 hours is entirely possible."

     "Aluminum graphene battery does not lose super capacitor in multiplying performance and cycle life, far beyond lithium battery. Although there is a gap between the energy density and the lithium battery, it obviously exceeds the supercapacitor. " Gao said, facing the two opponents of lithium batteries and supercapacitors, aluminum - graphene batteries show specific advantages, which can be called "super batteries".

     The aluminum graphene battery also has some unmatched features of other batteries. From low temperature to minus 40 C, aluminum - graphene battery can still stabilize charge and discharge 1000 times, high temperature to 100 C, stable charge and discharge for 45000 times, even if the core is exposed to flame, it will not fire or explode. This wide temperature range laid the foundation for the future use of aluminum ion batteries under extreme temperature conditions. The battery has good flexibility, and the capacity is completely maintained after 10000 bending, showing the potential of application in wearable flexible electronic devices.

     The excellent performance of "super battery" originates from the excellent microstructure and its macroscopic efficiency of graphene film as cathode material. Many important properties of the battery depend on how well the electrons and ions flow smoothly between the positive and negative poles. Compared to other positive materials, the graphene membranes prepared by the super project group have high quality without lattice defects, high orientation, and have continuous channels, which are like the four ways of the freeway, making the electrons and ions unimpeded.