China Sodium battery development v.s. Rest of the World

In 2026, it will be the first year of sodium batteries.

On April 6, 2026, the team led by Hu Shengyong from the Institute of Physics of the Chinese Academy of Sciences published a significant achievement in the journal Nature Energy. For the first time globally, they successfully achieved complete prevention of thermal runaway in an amper-hour sodium-ion battery. This innovation has overturned the traditional thinking that "flame-retardant electrolyte = safety", instead establishing a triple intelligent safety protection system of thermal stability, interface stability, and physical isolation. When the internal temperature of the battery exceeds 150 degrees, the electrolyte will change from a liquid state to a dense barrier layer, cutting off the chain reaction of thermal runaway at its source. This technology has been verified in a 3.5Ah mass-produced steel-shell cylindrical battery cell. The battery cell passed needle penetration, 300-degree high-temperature tests, and did not smoke, catch fire, or explode throughout the process. The materials used in this technology are all mature industrial products, and their industrialization implementation should be very rapid. This team belongs to China Ocean Nano Technology, and they are expected to be the first to implement it. This technology can also be applied to lithium batteries, and electric vehicles will become increasingly safe.

As of April 2026, the total planned production capacity of sodium batteries disclosed by domestic enterprises, including those under construction and in long-term planning, has exceeded 220 GWh. Among them, there are 32 production lines under construction, mainly scheduled to start operation from the second quarter of 2026 to the first quarter of 2027. The long-term plans of leading enterprises have further expanded the overall scale of the industry. Only the leading enterprises such as CATL, BYD, Chuantie Technology, and Zhongke Hainan have disclosed their long-term plans for 2027, with the total planned production capacity exceeding 300 GWh.

First Tier: BYD, CATL. BYD's 30GWh third-generation sodium battery production line in Qingxiang, Qinghai Province has been fully operational. The 30GWh sodium battery project in Xuzhou has started construction. The effective production capacity will stabilize at 30GWh in 2026, focusing on the mini vehicle and energy storage markets. CATL's 25GWh sodium battery production line in Fujian Province has been put into operation. The planned total production capacity in 2026 exceeds 50GWh. Within the year, the effective production capacity can be released ranging from 16 to 25GWh, supporting all scenarios including passenger vehicles, commercial vehicles, and energy storage.

Second tier： Zhongke Haina, Chuanyi Technology, Huayang Shares， Penghui Energy, Weike Technology. The Anhui Fuyang base of Zhongke Haina has expanded its production capacity to 3GWh. The bases in Taiyuan, Shanxi and Suining, Sichuan are advancing steadily. The planned total production capacity for 2026 is 10GWh， with 5GWh of effective production capacity to be released within this year. They focus on the energy storage and commercial vehicle markets. Chuanyi Technology's first phase in Jiangsu Gaoyou has completed the construction of 4.5GWh， and the second phase is planned for 5.5GWh. Huayang Shares' subsidiary Huanyan Xincheng has completed a 2GWh production line. In 2026， the planned production capacity will be increased to 5GWh. Penghui Energy has laid out 4GWh sodium battery production capacity in Guangzhou and Changzhou bases. It is planned to achieve full production in 2026 and mainly focuses on cylindrical and square aluminum shell batteries， providing them for two-wheel vehicles and overseas markets. Weike Technology's first GW-level sodium battery production line in China is already in full production. The planned total production capacity for 2026 is 4GWh.

China overwhelmingly dominates sodium-ion (Na-ion) battery development and commercialization as of mid-2026, with massive scale advantages, rapid industrialization, and strong government/industry backing. It highlights that the breakthroughs like the thermal runaway prevention from the Chinese Academy of Sciences team, plus planned capacities exceeding 220 GWh (with leaders like CATL and BYD targeting tens of GWh each in 2026 alone).

While looking at Non-Chinese Sodium Battery Manufacturers outside China, the sector is much smaller, earlier-stage, and focused more on niche applications (e.g., stationary storage, grid, specialized mobility) rather than broad EV/passenger vehicle scale. Most players are in the pilot or early commercial phase, with capacities in the low MW to low hundreds of MW range—not GW-scale. Key ones include:

• Faradion (UK, acquired/ supported by Reliance Industries, India): A pioneer in non-aqueous sodium-ion tech (layered oxide cathodes). Scaling toward GWh with Reliance's backing; strong in sustainability and applications like transportation /grid storage. One of the most advanced non- Chinese players.
• TIAMAT (France): Focuses on fast-charging sodium-ion for high-power uses (power tools, urban mobility). Innovative electrode designs; part of Europe's push for local supply chains.
• Altris AB (Sweden): Prussian blue analog chemistry, emphasizing sustainability, recyclability, and grid storage. Targeting ~175 MWh/year scalability; a European leader for stationary applications.
• Natron Energy (USA): Prussian blue chemistry for rapid discharge, long life (e.g., data centers, industrial/AI backup). Achieved commercial-scale production in Michigan but faced challenges; strong B2B focus.
• Others:
  • KPIT Technologies (India): Collaborations for fast-charging tech; plans ~3 GWh with partners.
  • European efforts (e.g., Northvolt AB mentions, Bihar Batteries in Spain, various consortia in Germany like Na.Ion.NRW/SIB:DE involving BMW/Varta).
  • Smaller US players (e.g., Peak Energy for grid deployments, Acculon) and scattered efforts in Japan/Korea (often via China-based pilots, like LG in Nanjing).

https://www.sodiumbatterymanufacturer.com/top-10-global-sodium-ion-battery-manufacturers/

https://vekenindustry.com/top-10-global-sodium-ion-battery-manufacturers-in-2026/

Non-Chinese activity is fragmented, often research-heavy or reliant on partnerships (e.g., Reliance for Faradion). Many emphasize safety, low-cost materials, and avoiding lithium supply risks, but face hurdles in scaling supply chains and achieving cost-competitiveness.

Hence China's Position vs. the Rest of the World is quite obvious that China's advantages are structural and significant:

• Scale & Speed: As of April 2026, domestic planned capacity >220 GWh (with >300 GWh long-term views), dozens of production lines coming online in 2026-2027. CATL (25-50+ GWh targeted) and BYD (30 GWh+ operational/starting) alone dwarf most global efforts combined. First-mover mass production for EVs, commercial vehicles, and energy storage.
• Integration & Ecosystem: Vertical integration (materials to packs), mature supply chains, and low costs from existing lithium infrastructure adapted for sodium. Recent breakthroughs (e.g., the triple safety system you mentioned, high energy density ~160-175 Wh/kg in leaders, excellent low-temp performance) accelerate adoption
• Market Pull: Huge domestic demand in mini-EVs, two-wheelers, stationary storage, and hybrids. Policy support and cost advantages (sodium from seawater, no critical minerals dependency) position it strongly.
• Tech Leadership: Innovations in electrolytes, interfaces, safety, and cycling are coming rapidly from Chinese teams/institutes. This can apply to lithium too.

Rest of the world lags in volume but has opportunities:

• Focus on differentiation (e.g., ultra-long life Prussian blue for grids, regional supply chain security). US/Europe/India benefit from incentives (e.g., IRA in US) and aim to reduce China dependency.
• Challenges: Smaller capacities, higher costs, supply chain gaps, and slower commercialization. Some US startups faced setbacks (e.g., closures or pivots). Europe pushes "drop-in" manufacturing compatibility but remains medium-term.
• Global share: China likely holds 60%+ of the current market and 95%+ of announced near-term capacity. Non-China players are "a small handful" by comparison.

Future Outlook:

• China is set to lead for years in cost, volume, and broad applications (especially EVs/storage), potentially commoditizing sodium-ion and pressuring lithium prices. Risks include overcapacity or tech commoditization.
• World others can carve niches in premium/safe/grid uses, localized production, or specialized chemistries. Success depends on partnerships, policy (tariffs/incentives), and catching up on scale. Sodium-ion's overall growth (cheaper, safer, abundant materials) benefits everyone, but China's head start makes it the pace-setter.
• Hybrid approaches (e.g., China tech + overseas manufacturing) or breakthroughs elsewhere could narrow the gap over 5+ years.

In short, China is decisively ahead in the "here and now" race for sodium batteries, much like it has been in lithium. The technology's maturation (as in the safety breakthrough) will help global adoption, but non-Chinese players need aggressive scaling to stay relevant. From a global perspective, barring any unforeseen circumstances, China is once again at the forefront of the sodium battery industry.

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