When the mobile era began, one of the most advanced phones was Nokia. There is still humorous talk about these mobiles. That apart from having high shock resistance, they also had really excellent batteries .
The batteries of these phones could last days, and even weeks. A good battery charge compensated for very optimal service. Although, of course, these phones did not have a large screen, they did not include applications and did not even have a processor.
They were equipment used exclusively to make calls and receive text messages. But when the era of smart mobile phones, better known as smartphone, arrived, the history of the batteries of these computers was completely transformed.
Lengthen battery life
Now, the challenge of these batteries was to be able to last a little more than one or two days at most. The user of a smartphone in 2007, had to keep his cell phone plugged into his computer or to an outlet almost daily. A tradition that is preserved to this day.
And it is not only that the smartphones of our current era have to face much wider and more colorful screens, but also the quality of the processor and the performance of the applications that remain active during the day comes into play .
However, according to recent studies, the history of cell phone batteries will not undergo a strong advance for the moment . We are used to technologies having exponential growth. However, in terms of batteries, it is estimated that its development will be maintained for a long time in a linear manner.
Scientific studies are in their limit phase
According to Venkat Srinivasan, who is in charge of the Argonne Collaborative Center for Energy Storage Science, the progress achieved so far represents the highest attainable level. That is, for now, you can not innovate or try to exceed the limits.
What happens is that everything has been tried, until discovering that if the efforts continue to intensify, the results would be the same as those produced with the Samsung Galaxy Note 7. Explode? Yes, batteries would be at greater risk of exploding.
In terms of technology and performance it is easy to innovate. Today’s mobiles represent a version of small computers, where you simply play with the potential of a processor, the performance of a camera and the graphic quality of a screen.
Exploit or not explode
But when you turn to the power supply, the batteries offer limited performance according to current research and development. It is known that for a battery to have a higher energy density, it is necessary to reduce the distance between the cathode anode , which are located within the same cells that make up the battery.
When you try to reduce that distance, the risk of explosion increases. Why? Because a very precise level of precision is needed to cut the distance between the anode and the cathode.
If that condition is not met, the battery tends to overheat and the chemical reaction that triggers the explosion follows .
Can lithium batteries be optimized further?
The lithium-ion batteries of the moment, cannot be optimized to a new level with the resources and knowledge that you currently have. And for now, lithium batteries are the most efficient for our mobile equipment, whether it is one that has a value of 1,000 or 3,000 dollars.
What scientists suggest is to make a leap from current lithium technologies to other energy sources. But for the same reason, that is a field that is still being worked on. For now, the evolution and performance of current batteries will remain for a few years.