Rumors are circulating in China that BYD plans to produce sodium-ion battery cells in the second quarter of 2023 for use in some of its electric vehicles. The company claims these rumors are false. CnEV postis widely viewed as a reliable source of information on what is happening in the Chinese auto business. CnEV post attribute the news to a report by a local Chinese news source late post.
BYD’s battery division, FinDreams, is said to be responsible for developing and mass-producing sodium-ion batteries, which are currently in the sample validation stage. According to reports, these could be used in BYD’s Qin, Dolphin, and new Seagull models. Qin and Dolphin are priced between $14,000 and $21,000. Seagull is priced between $11,000 and $14,000. EVs priced under $14,000 make up more than 36% of all battery electric vehicles sold in China this year.
The reason for doing this is that, assuming the reports are accurate, the price of lithium has skyrocketed over the past 18 months from $5,700 per tonne in June 2020 to $84,000 per tonne today. Lithium is the main ingredient in lithium-ion batteries, so it makes sense to look for cheaper alternatives. Sodium currently costs about $3,000 per ton.
However, sodium batteries have one significant drawback. They have a lower energy density than lithium batteries, so more batteries are required to harness the same amount of energy to power an electric vehicle.
In a research report last July, Guosen Securities analyst Tang Xuxia and his team found that the energy density of lithium-ion batteries is up to 300Wh/kg, while that of lead-acid batteries is around 50Wh/kg. kg. Sodium-ion batteries are somewhere in between the two.
CATL It is also pursuing sodium-ion batteries for production vehicles, claiming that its sodium battery cells have an energy density of 160 Wh/kg. But CATL doesn’t make cars, so BYD could be the first automaker to bring sodium-ion batteries to market. Low power density is probably less important at the lower end of the market, where price rather than performance is the primary factor in the decision to buy an electric vehicle.
Sodium batteries are not only cheaper, but also avoid the potential fire hazards associated with lithium-ion batteries. This means manufacturers can use more sophisticated and cheaper battery cooling systems, further driving down the cost of entry-level EVs.
Again, this is all rumor and speculation at this point, but even if you can’t get the Kessel to run under 12 per second, it does suggest cheaper electric cars aren’t far away. A lot of people lose their edge in the Stoplight Grand Prix to own an affordable electric car.
In an informal poll of attendees clean technica In a recent graphene and beryllium conference room, BYD serious challenge We will be joining other major EV manufacturers in the near future.
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