Soon, 'lower-cost', 'more eco-friendly' electric car battery - lithium ion battery cost
A research team has come up with a new material that can help reduce the cost of batteries for electric cars and mobile phones.
A research team has come up with a new material that can help reduce the cost of batteries for electric cars and mobile phones.
In the battery war, lithium-
Ion technology, the defending champion, powers your mobile phone in your pocket while also powering more and more electric cars.
But a new type of manganese and sodium. ion-
The basic materials developed by the University of Texas at Dallas in partnership with Seoul National University may become a competitor to provide potentially lowercost, more eco-
Friendly choice for next fuel
Power generation equipment and electric vehicles.
Senior author Kyeongjae Cho says the cost of the battery is a big problem.
With manufacturers and consumers driving more electric vehicles, lithium production may be difficult to keep up with growing demand, Cho said.
According to a recent report by the International Energy Agency, the global electric garage has more than 2 million vehicles in 2016 and more than 1 million in 2015.
According to the report, according to the policy environment, by 2020 this figure is likely to be between 9 million and 20 million, and between 40 million and 70 million by 2025.
In terms of the cost savings of electric vehicle batteries, it will be cheaper to use sodium because it is more abundant, but it has some disadvantages.
"Lithium is a more expensive and limited resource that must be mined from several regions around the world," Cho said . ".
"There is no mining problem with sodium ---
Can be extracted from sea water.
Unfortunately, although sodium
Ion batteries may be cheaper than batteries that use lithium, and the energy density of sodium is often 20% lower than that of lithium.
"The energy density or energy storage capacity of the battery determines the running time of the device.
"We have used our past experience to think about these issues. -
"How do we combine these ideas to come up with new ways to solve the problem," Cho said . ".
A battery consisting of a positive or cathode;
Negative electrode or anode;
There's an electrolyte in the middle.
In a standard lithium-
Ion battery, the cathode is made of lithium, cobalt, nickel and oxygen, and the anode is made of a graphite of carbon.
When the battery is charged, the lithium ion moves through the electrolyte to the anode and attaches to the carbon.
During the discharge, the lithium ion returns to the cathode and provides electrical energy for the running equipment.
"A few years ago, it was very promising to use manganese oxide in lithium --
"The Ion battery cathode adds capacity, but unfortunately the combination becomes unstable," Cho said . ".
In the design developed by Cho and his colleagues, sodium replaced most of the lithium in the cathode, and manganese replaced the more expensive and rare elements of cobalt and nickel. "Our sodium-
The ion material is more stable, but it still maintains the high energy capacity of lithium . "
We believe this is scalable and this is the focus of our research.
We want to make this material in a way that is compatible with commercial mass production.
"Based on their physical and chemical knowledge of other experimental materials, the researchers solved the problem with reasonable material design.
They first performed computer simulations to determine the most promising atomic configurations before the materials were manufactured and tested in the laboratory.
Zhao said his research is not just about developing better batteries.
How the study was conducted, he said, is equally important and equally interesting.
The study was published in the journal Advanced Materials.
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