Last week, the US battery company Solid Power revealed that the solid-state battery it developed has started trial production, and it is expected to provide battery testing to BMW, Ford and other cooperative car brands later this year, and even Batteries will be mass-produced in 2024.
In the end, what advantages do solid-state batteries have over traditional lithium-ion batteries, attracting a lot of car manufacturers to bet?
Can this technology make electric vehicles more popular?
The Japanese group Sony first commercialized lithium-ion batteries in the early 1990s.
Since then, lithium-ion batteries have become standard equipment for various portable consumer electronic products such as mobile phones, cameras, laptop computers, camcorders, and game consoles.
In recent years, although lithium-ion batteries have supported the development of electric vehicles, they seem to have begun to see the limitations of this technology in application.
Break through the limitations of existing lithium batteries
A big limitation of lithium-ion batteries is their electrolytes.
The role of the electrolyte is to allow ions to travel between the two cells, enabling charging and discharging.
So far, lithium-ion batteries use liquid electrolytes, which are bulky and bulky, limiting the cruising distance of electric vehicles after each charge.
Although the energy density and lifespan of lithium-ion batteries have steadily increased in recent years due to engineering advances, some scientists believe that the performance of lithium-ion batteries may have "bottomed out" without changing the battery structure.
In addition, liquid electrolytes are flammable and pose safety risks such as fires. Last year, General Motors (GM) recalled a large number of its Chevrolet electric vehicles, the Bolt.
These two points are the reasons why many people are still discouraged from electric vehicles.
At present, electric vehicle related industries are trying to solve these problems from different ways.
Some, such as battery giant China's CATL (CATL) and South Korea's LG New Energy, continue to study and change the composition and ratio of electrode metals to improve battery performance by changing battery chemistry.
For details, please read the 321st issue of "Hong Kong 01" Electronic Weekly (June 13, 2022) "
Solid-state batteries move towards production to make electric vehicles more popular
".
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