lithium air rechargeable battery the answer to electric car range? - li ion battery cell
The situation today is that the idea of mass production of commercial electric vehicles is not new.
The low energy density of batteries that power these cars has always been the reason why internal combustion engines occupy the market.
Compared to fossil fuels, the battery offers large volumes, expensive prices and low efficiency.
For example, a battery pack containing the energy equivalent to 50 liters of gasoline (gasoline)
Can be weighed between 1. 5 and 2 tons.
The best battery for electric cars today is considered lithium-ion batteries.
This is the lightest and highest energy density of all rechargeable batteries.
This may not be enough, however.
Development of a new type of lithium battery-lithium battery
The air rechargeable battery seems to promise a high energy density only compared to gasoline.
How the lithium air battery works
Air batteries are more or less the same as lithium batteries-ion battery.
Anode in Li-
The air cell consists of lithium, while the cathode consists of porous carbon that absorbs oxygen from the air (open).
During the discharge process, oxygen reacts with lithium to form lithium peroxide;
During charging, the reaction is reversed and oxygen is released.
These reactions occur on the surface of the porous carbon electrode and generate energy.
Use porous materials as a cathode and absorb atmospheric oxygen to make the battery lighter than lithiumion battery.
Many companies, including IBM and GM, are already working to improve existing technologies and overcome the challenges that arise.
The problem that needs to be overcome is one of the main shortcomings of lithium
Existing air batteries are their limited number of charge/discharge cycles. A lithium-
The ion battery has the ability to charge more than 100,000 times, while the lithium-
The air battery can only be charged about 50 times, which is due to a very large loss of energy (~40%)
What happens during charging
In addition to the number of charges, it is necessary to reduce the time required to charge the battery.
For any consumer, electric car batteries that take too long to refuel are impractical, especially compared to the time it takes to refuel with gasoline.
Another problem is, in Lee-
The air battery produces lithium oxide and it is difficult to convert it into lithium again.
The only way to achieve this is through the catalyst, although there is still a considerable amount of lithium oxide accumulation inside the battery.
Future assessment of the future of lithium-
The air battery is vague.
While significant progress has been made, it is uncertain whether they will be commercially available for sale in the coming years.
The fact of lithium-
However, it is encouraging that ion batteries were developed in their 70 s and eventually entered the market in 1997. For Lee-
Air batteries to enter the market, should overcome the above problems before commercial.
Once this happens, the first application may be a portable electronic product (
Laptops, mobile phones, etc. )
Larger applications such as electric vehicles are expected to be much later.