Key Takeaways
1. CATL will not start large-scale production of solid-state batteries for EVs capable of over 1,200 miles on a single charge by 2027, contrary to some rumors.
2. The company plans pilot production of solid-state battery cells in 2027 but on a limited scale, with claims of energy density achieving 1,252 miles overstated.
3. Current advancements in solid-state battery technology are still in the research phase, with a peak energy density of 500 Wh/kg, which is double that of current liquid electrolyte batteries.
4. CATL has been investing in solid-state battery technology for over a decade and aims for small-scale production by 2027, with a projected manufacturing maturity level of 7 or 8.
5. Solid-state batteries are costly to produce and currently more suitable for specialized applications like drones and robots rather than mass-market electric vehicles, where LFP battery technology remains dominant.
CATL has clarified that it will not begin large-scale production of a solid-state battery that can power an electric vehicle (EV) for over 1,200 miles on a single charge by 2027, as some rumors suggested.
Pilot Production Plans
The leading battery manufacturer will indeed start pilot production of solid-state battery cells at that time, building on its existing trial production line, although it will be on a limited scale. Furthermore, the claim that its solid-state battery will feature an energy density capable of achieving 2,000 kilometers (1,252 miles) on one charge appears to have been overstated.
Current Developments in Technology
While there are advancements in solid-state battery technology that could enable such an EV, these innovations are still in the research phase and not yet ready for market. CATL has already stated that its solid-state battery technology boasts a peak energy density of 500 Wh/kg. This remains the theoretical maximum for mass production-ready solid-state batteries, which is double the capacity of current EV batteries utilizing liquid electrolytes. For example, a solid-state battery with this density recently powered a Mercedes EQS prototype for an impressive 749 miles on a single charge, significantly exceeding the average EV range.
CATL emphasized that the “commercialization of solid-state batteries, along with the development of the supply chain, is still quite a ways off.” This has been its stance since 2022 when NIO requested the manufacture of its cells using semi-solid electrolytes. At that time, CATL projected that true mass production of solid-state batteries would not commence until around 2030.
Ongoing Research and Investment
However, this does not imply that CATL is not advancing its solid-state battery technology. The company has been researching this area for over ten years, involving 1,000 engineers in the development process and operating a pilot production line. “CATL is committed to investing in solid-state battery technology, maintaining its position as a leader in the industry, and expects to achieve small-scale production by 2027,” the company stated, in an effort to manage expectations. Last year, the CEO of CATL rated the industry’s readiness for mass production of solid-state batteries at a 4 on a 9-point scale. He mentioned that by 2027, CATL aims to reach a manufacturing maturity level of 7 or 8, which would enable the production of initial batches, though it remains unclear which EV manufacturer will be the first to receive them.
Cost and Market Suitability
While solid-state batteries offer improved energy efficiency and safety, they are also quite expensive to produce. NIO has warned that its 150 kWh pack with a semi-solid electrolyte costs as much as a typical EV, and it is only available for rent during extended summer trips. As production scales up, the costs are expected to gradually become more favorable, but for now, CATL considers solid-state batteries to be more appropriate for applications in drones and robots, where energy density is more critical, rather than for mass-market electric vehicles. In that segment, the widely used LFP battery technology continues to dominate, powering everything from new compact Anker Prime power banks to large energy storage systems.
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