Inner Mongolia Jianheng Aoneng officially starts mass production of 720V high-voltage solid-state sodium salt batteries, aiming to build the world's largest production site

SMM July 14 News:
In July 2025, Inner Mongolia Jianheng Aoneng Technology Co., Ltd. held a commencement ceremony at the Dalateqi Economic Development Zone, announcing the official mass production of its technologically advanced 720V high-voltage solid-state sodium salt batteries. This marks China as the third country globally, after the US and Europe, to achieve commercial mass production of sodium salt batteries, and also positions Jianheng Aoneng as the world's largest and most automated solid-state sodium salt battery production site in the future.

Technological Breakthrough: From Lab to Industrialisation
Jianheng Aoneng's sodium salt battery technology originates from the long-term R&D efforts of the Shanghai Institute of Ceramics, Chinese Academy of Sciences. In 2014, Shanghai Aoneng Rila Energy Technology Co., Ltd. collaborated with the institute to initiate the industrialisation of sodium-nickel batteries, successfully adopting solid-state ceramic electrolyte technology to develop high-safety, high-energy-density 720V high-voltage sodium salt batteries. The technology completed pilot-scale and medium-scale trials in 2017 and officially settled in Dalateqi, Inner Mongolia in August 2023, entering the stage of large-scale mass production.

Compared to traditional liquid electrolyte batteries, solid-state sodium salt batteries offer advantages such as high-temperature resistance, long cycle life, and high safety, making them particularly suitable for large-scale energy storage, power grid peak shaving, and renewable energy integration.

Three-Phase Plan: 3.5 billion yuan investment, 3GWh capacity, 6 billion yuan annual output value
The total investment in the Jianheng Aoneng project is 3.5 billion yuan, divided into three phases, ultimately forming an annual production capacity of 3GWh:

Phase I (2024-2025): 500 million yuan investment to build a system integration and assembly production line, with an annual production capacity of 300MWh and an expected annual output value of 1 billion yuan;

Phase II (2025-2026): 1.2 billion yuan investment to expand into ceramic battery cell and entire industry chain production, increasing annual production capacity to 1.5GWh and cumulative annual output value to 3 billion yuan;

Phase III (2026-2027): 1.8 billion yuan investment to construct the entire industry chain from electrolytes, battery cells to ESS power stations, with a total production capacity of 3GWh, an annual output value of 6 billion yuan, and an expected annual profit and tax of 780 million yuan.

After the full commissioning of the project, Jianheng Aoneng will become a leading enterprise in the global solid-state sodium salt battery field, driving the development of the local supply chain in Inner Mongolia and assisting Ordos in building a demonstration zone for a "generation-grid-load-storage integrated" new-type power system.

Empowering the New Energy Revolution and Promoting Green Transformation in Inner Mongolia
As an important energy base in China, Inner Mongolia has been accelerating its transition to clean energy in recent years. The establishment of Jianheng Aoneng not only fills the gap in the autonomous region's high-end energy storage battery manufacturing sector but also promotes the coordinated development of wind and solar power generation with energy storage, enhancing power grid stability.

A relevant official from the Dalateqi Economic Development Zone Management Committee stated, "This project is a crucial support for the autonomous region's 'dual carbon' strategy and will attract more new energy industry chain enterprises to gather in the future, forming an industrial cluster effect."

With the explosive growth of the global energy storage market, sodium salt batteries are regarded as an important direction for the next generation of energy storage technology due to their abundant resources and cost-controllable advantages. Jianheng Aoneng's mass production breakthrough not only enhances China's discourse power in the global energy storage industry but also provides a new "Chinese solution" for the global energy transition.

SMM Interpretation:

Jianheng Aoneng's mass production marks China's capability in the entire chain of technology R&D, pilot trials, and mass production, comparable to that of the US and Europe. Currently, there are five enterprises globally, including Jianheng Aoneng, with solid-state sodium salt battery projects. However, commercial success still requires reducing costs through 3GWh capacity to below 0.4 yuan/Wh.

Below is the progress of solid-state sodium salt battery projects in various countries worldwide.

1. General Electric (GE) of the US

Technology Route: Adopts the sodium-nickel chloride (Na-NiCl₂) system, belonging to high-temperature solid-state sodium salt batteries (operating temperature 250-350℃), with β-alumina ceramic as the electrolyte.

Commercial Progress: Durathon Battery: Launched by GE in the early 2010s, mainly used for industrial energy storage and backup power supplies for telecom base stations. It gradually withdrew from commercialization after 2015 and shifted to technology licensing (such as licensing to South African company Blue Horizon).

Current Status: GE's current focus has shifted to flow batteries and hydrogen energy, but it retains patents for high-temperature sodium salt batteries and may restart through cooperation in the future.

Features: Long cycle life (over 10,000 cycles), resistance to extreme temperatures, but the high-temperature system requires additional energy consumption for maintenance, limiting its application in consumer-end markets.

2. FZ SoNick (Italy)

Technology Roadmap: Development of sodium-iron chloride (Na-FeCl₂) mid-temperature solid-state batteries (operating temperature 150-200℃) with sodium superionic conductor (NASICON) as the electrolyte.

Commercial Progress: Mass production commenced in 2018 in collaboration with Switzerland's Leclanché, for use in European household energy storage and microgrid projects, such as the PV+ESS integration pilot in Sicily, Italy. In 2023, an upgraded modular battery pack was launched, with energy density increased to 150Wh/kg (close to that of LFP batteries) and costs reduced to below $100/kWh.

Features: Extremely high safety (completely non-flammable), suitable for distributed energy storage, but energy density remains lower than mainstream lithium batteries.

3. Toyota (Japan)

Technology Roadmap: Sulphide-based solid-state sodium salt batteries (operating at room temperature).

Commercial Progress: Trial mass production began in 2022, with the establishment of the world's first sulphide solid-state sodium battery pilot line, with a capacity of approximately 100MWh/year, prioritized for use in hybrid vehicles (such as the next-generation Prius models) and energy storage base stations. Expansion is planned for 2024, with a joint venture factory with Panasonic coming into operation, aiming to reduce costs to $80/kWh by 2027 (30% lower than lithium batteries).

Core Advantages: Room temperature operation without the need for a heating system, suitable for consumer electronics and automotive applications; sulphide electrolyte with an ionic conductivity of 10⁻³ S/cm (close to that of liquid electrolytes).

Challenges: High air sensitivity, leading to increased packaging costs; cycle life needs to be improved from the current 2,000 cycles to over 5,000 cycles.

4. QuantumScape (US)

Technology Roadmap: Oxide-based solid-state sodium salt batteries (coupled with sodium metal anodes).

Commercial Progress: Samples delivered in 2023: the first batch of automotive-grade solid-state sodium batteries were provided to Volkswagen, with an energy density of 350Wh/kg (20% higher than current lithium batteries), for testing in ID. series EV models. Mass production is planned for 2025: the California factory will commence operations, with a planned capacity of 2GWh/year, targeting the high-end EV market.

Core Advantages: Supports 12-minute fast charging (0-80%); no dendrite formation, ensuring excellent safety.

Challenges: High brittleness of oxide electrolytes, with a mass production yield of only 65%; costs as high as $150/kWh, requiring economies of scale to reduce prices.