In early August, inside a laboratory in Chongqing, a 200Ah sodium-ion battery pack successfully completed its final mandatory compliance test. Engineers from Zhongke Hina (中科海钠) stared intently at the data on screen: energy density exceeded 135 Wh/kg, fast-charging cycle life surpassed 8,000 cycles, and discharge capacity retention at -20°C remained over 90%. This marks the official regulatory certification of the world’s first sodium-ion power battery pack specifically for commercial vehicles.
Meanwhile, CATL (Contemporary Amperex Technology Co., Limited) announced that its sodium battery production line in Fujian has entered mass production countdown, BYD’s sodium battery factory in Qinghai has quietly begun operations, and the United States announced the commissioning of its first grid-level sodium-ion battery energy storage system.
1. Commercial Vehicles First: Sodium Batteries Break into the Heavy Truck Segment
While electric vehicles are making rapid strides in the passenger car market, electrification of heavy-duty trucks has lagged behind. The core pain point lies in the battery: standard lithium batteries struggle to meet the operational needs of heavy trucks, which include high-frequency use and short stops. Insufficient fast-charging capability, severe low-temperature degradation, and limited cycle life have deterred many logistics fleets.
Zhongke Hina’s “Starfish” series power battery solution directly addresses this market gap. This sodium-ion battery pack, designed for commercial vehicles, passed national-level rigorous testing in Chongqing and officially obtained commercial certification.
This battery pack boasts three core competitive advantages:
- Full charge within 20–25 minutes
- Ultra-long cycle life of over 8,000 cycles
- Wide temperature adaptability from -40°C to 60°C
The total cost of ownership, a primary concern for heavy-duty EV users, is fundamentally reshaped. Traditional lithium batteries in the truck sector typically require replacement after about three years. In contrast, a sodium battery with 8,000 cycles can support operations for over 8 years, drastically reducing replacement costs.
An executive from Fuyang Hina Technology confidently stated that this product already “far exceeds the industry average” and will pave the way for large-scale adoption of electric heavy trucks in logistics and construction.
2. Multiple Sectors Advance in Parallel: Passenger Vehicles and Energy Storage Take Off
Alongside breakthroughs in commercial vehicles, sodium batteries are also being rapidly commercialized in the passenger vehicle and energy storage sectors.
At CATL’s Super Technology Day in April, the company unveiled three sodium battery products in one go, shaking the industry. Among them, the sodium battery designed for passenger vehicles boasts an energy density of 175 Wh/kg—comparable to mainstream lithium iron phosphate batteries. Even more astonishing is its low-temperature performance: in environments as cold as -40°C, it retains 90% of its charge, with virtually no loss in vehicle power.
“A battery like this must be running on antifreeze!” exclaimed a netizen from Harbin on social media.
CATL engineers explained that this performance is due to the more stable electrochemical characteristics of sodium ions at low temperatures, solving the “cold sensitivity” problem of lithium batteries.
In the energy storage sector, sodium’s cost advantage is fully realized. U.S.-based Peak Energy recently launched the world’s largest sodium-ion phosphate battery system, featuring a revolutionary passive cooling design with almost no moving parts. According to the company, each GWh installed can save at least USD 1 million (approx. KRW 1.45 billion) in annual operating costs, reduce auxiliary power consumption by up to 90%, and cut total lifecycle costs by about 20% compared to lithium iron phosphate systems.
3. Technological Disruption: Dual-Core Architecture and Capacitor-Enhanced Designs Break Barriers
Sodium battery tech advancements have gone beyond mere material substitution and have entered the realm of system architecture innovation.
CATL introduced its “Xiaoyao Dual-Core” battery concept, breaking the constraints of single-chemistry systems. This innovation allows the battery pack to contain two independent “energy zones” that flexibly combine the strengths of different chemistries.
For instance:
- “Sodium-Iron Dual-Core” batteries combine sodium’s low-temperature performance with the high energy density of lithium iron phosphate
- “Iron-Iron Dual-Core” batteries achieve 1,000 km of pure electric range in vehicles with nearly 3-meter wheelbases
At the material level, Professor Han Wei’s team at Jilin University proposed the concept of “capacitor-enhanced batteries.”
They constructed a C@BiZnS@V₄C₃ heterostructure using ultra-large MXene flakes and BiZnS composite materials. This setup maintains a specific capacity of 270.4 mAh/g even under high current of 100 A/g, and operates for over 10,000 cycles—outperforming traditional sodium batteries by a wide margin.
“This design integrates the high energy density of traditional batteries with the rapid charge/discharge kinetics of supercapacitors, addressing the inherent challenge of slow sodium-ion migration,” Professor Han explained in the journal Advanced Materials.
This dual mechanism signals the developmental direction for next-generation sodium-ion energy storage systems.
4. Industrial Chain Race: Global Deployment Accelerates
With technical bottlenecks being resolved, the sodium battery industry chain has entered a golden window period.
Fan Haiman, General Manager of Jianna Energy, stated: “The next three years will be a golden period for sodium battery industry development.”
Jianna Energy is accelerating its deployment:
- A sodium-ion battery material R&D lab is under construction in Chengdu
- A production base in Pu’er, Yunnan is about to begin operations
- Phase II of its Zigong, Sichuan facility is underway, aiming for 10,000-ton capacity
BYD’s strategic deployment is even more aggressive. In July, its sodium-ion battery mass production line in Xining, Qinghai officially began operation—widely regarded as a milestone event marking the “first year of sodium batteries.”
Global giants are also making quiet moves. LG Energy Solution recently released its sodium battery roadmap:
- Gen-1 sodium batteries will target lead-acid battery replacement, with mass production planned for 2027
- Gen-2 batteries are aimed at EVs with a target energy density of 450 Wh/L, and production expected by 2030
Of note: LGES plans to adapt existing lithium battery production lines to accommodate sodium, potentially shortening commercialization timelines significantly.
5. Challenges Remain, but Outlook is Bright
Despite strong momentum, technical challenges remain. Energy density and material stability are still key hurdles for commercializing sodium batteries.
Hard carbon, the typical anode material, has low initial charge/discharge efficiency, increasing irreversible capacity loss.
Sodium transition metal oxides, commonly used as cathode materials, are prone to moisture corrosion, leading to performance degradation. Continuous material science breakthroughs are needed to overcome these issues.
From a market positioning perspective, sodium batteries are not expected to completely replace lithium batteries but will form a complementary relationship.
Industry experts predict sodium will target energy storage, two-wheelers, and entry-level (A00-class) passenger vehicles, while lithium batteries will continue to dominate the premium EV segment.
Cost advantage remains sodium’s strongest card.
CATL’s new 24V sodium-ion integrated starter battery for heavy trucks reduces lifecycle cost by 61% compared to traditional lead-acid batteries and exceeds 8 years of service life. This is an irresistible proposition for commercial vehicle operators.
With China’s enterprises leading the way in sodium tech breakthroughs and capacity expansion, the energy security balance is tipping in its favor.
Sodium resources are 421 times more abundant than lithium and are more evenly distributed globally, significantly reducing reliance on imported lithium. “In the past, those who controlled lithium ruled the world; now, those who control sodium rule the future!” summarized one industry observer on social media.
[Disclaimer]: The above content reflects analysis of publicly available information, expert insights, and BCC research. It does not constitute investment advice. BCC is not responsible for any losses resulting from reliance on the views expressed herein. Investors should exercise caution.