Charging 5 seconds call 2 hours! Zhejiang University developed a new type of aluminum - graphene super battery '- December 24, this news triggered a hot network. In response to this, Zhejiang University Department of Polymer Science and Engineering In an interview with Legal Evening News on the 25th, an excellent team said in an interview with reporters of the view that 'charging for 2 seconds for 5 seconds' is actually only the prospect of the study.' If the product is really made in the future or there is hope for it, At present, it has not been realized. '
Reporter learned from the super battery R & D team, aluminum - graphene ion battery life of ordinary lithium-ion battery is 200 times in charging time, aluminum - graphene ion battery has also been greatly improved.
'Our daily use of the phone is a lithium-ion battery, you need to charge 2-3 hours.' 'Research team member Xu Han Yan told reporters that cell phone lithium-ion batteries have less than one thousand cycles of life expectancy, spent a few years later, the capacity decay, 'Showed a decline in mobile phone battery life, charging frequency increases, become non-durable' compared to aluminum-graphene ion battery cycle life of 25 million laps, which means that if used in mobile phones, the useful life Will be longer.Even charging ten times a day, with 70 years no problem.
For the advantages of aluminum-graphene batteries, researcher Xu Hanyan said the high rate performance, long cycle life and other characteristics, and now used in automotive quick start occasions, such as supercapacitors are very similar to aluminum - graphene battery energy Higher density, which means you can do smaller and lighter.Compared with the lithium battery, although there is still a gap in capacity, but aluminum - graphene battery capacity ratio, cycle life far more than lithium batteries.
In this research, the super battery is completely using graphene as the electrode. Compared with other positive electrode materials, the super-group prepared graphene film with high quality without lattice defects, highly oriented and possessing continuous pores, which is like extending in all directions Of the highway, so that electrons and ions unimpeded.This battery can work in the minus 40 degrees Celsius to 120 degrees Celsius environment, can be described as both high temperature and cold, that is to say the battery can be used anywhere human beings , Whether it is in the North Pole or Africa. 'Moreover, the super-battery theory can also be applied to all areas of life, including mobile phones, electric cars and so on.
According to previous media reports, in the minus 30 degrees Celsius environment, this new battery can achieve 1,000 charge and discharge performance diminished, and in the 100 degrees Celsius environment, it can achieve 4.5 million times the stability of the cycle. The new battery is flexible , Bending it ten thousand times, the capacity is completely maintained; and, even if the cell is exposed to a flame, it does not catch fire or explode.
The downside is that the battery has not yet been investigated for its capacity, that is, the capacity has not been as high as a lithium-ion battery. 'If we were able to make breakthroughs in the study of capacity, then graphene - The possibility of aluminum battery production is still very large. 'Xu Han said.
Speaking of super battery research difficulties, Xu Han said: 'We used in the experiment are very small things, but at this stage the research goal is to be able to make such a battery bigger, in the process of amplification of its Performance is influential, which is actually a requirement for industrialization. '
When the super-battery can be applied to mobile phones? The research team said that the real aluminum-graphene battery production, use and other processes, it will take some time. 'Scientific research may also require a very long process, we do not know what time Will be achieved, but we will work hard in this direction, "said Xu Hanyan.
