SVOLT Energy's Solid-State Battery Roadmap Unveils World's First "Electrolyte Thermal Composite Transfer Printing Process

SMM November 03 News:

Highlights: SVOLT Energy Technology Chairman Yang Hongxin disclosed progress on solid-state batteries at the TEDA Forum, introducing the world's first electrolyte thermal composite transfer printing process. The company has completed construction of a 2.3 GWh semi-solid-state battery production line and is expected to launch a 500 Wh/kg all-solid-state battery in 2028, having secured orders from European automakers and eVTOL projects.

Highlights: Yang Hongxin, Chairman of SVOLT Energy, disclosed progress on solid-state batteries at the TEDA Forum, introducing the world's first electrolyte thermal composite transfer printing process. The company has completed construction of a 2.3 GWh semi-solid-state production line and plans to launch a 500 Wh/kg all-solid-state battery in 2028, having secured orders from European automakers and eVTOL projects.

Regarding SVOLT Energy's layout in solid-state technology, the discussion begins with a speech by Mr. Yang Hongxin, Chairman of SVOLT, in Q3.
On September 11, 2025, Yang Hongxin, Chairman and CEO of SVOLT Energy, presented progress on semi-solid-state and all-solid-state batteries at the 21st China Automotive Industry Development (TEDA) International Forum held in Binhai New Area, Tianjin, and publicly introduced SVOLT's globally pioneering "electrolyte thermal composite transfer printing process."
SMM has compiled and summarized SVOLT Energy's progress and layout in the semi-solid-state and all-solid-state battery sectors for market reference.

I. Solid-State Technology Route: Sulfide
SVOLT Energy's all-solid-state battery technology follows the sulfide route, while the cathode of its semi-solid-state battery uses high-nickel materials.

II. Battery Technology Progress
1. Technological Breakthrough: Thermal Composite Stacking Overcomes Manufacturing Challenges
In the field of all-solid-state batteries, SVOLT Energy innovatively introduced the "thermal composite stacking" preparation process, integrating transfer printing, die-cutting, stacking, and static pressing into a single step. This improves production efficiency by 100% and significantly enhances the mass production feasibility of all-solid-state batteries.
2. Technological Breakthrough: Electrolyte Thermal Composite Transfer Printing Process
For semi-solid-state batteries, SVOLT Energy has independently developed the "electrolyte thermal composite transfer printing process." This process, through a polarity-changing adhesive formulation and contour-gradient hot-pressing technology, achieves efficient and uniform transfer of the electrolyte layer from the separator to the pole piece, increasing the transfer rate from an initial ~20% to over 95%. This technology is compatible with existing production lines, improving HIPOT yield by 10%, reducing differential pressure defect rate by 6%, and enhancing safety performance by 50%.
3. Full-Stack In-House R&D: SVOLT has achieved full-stack in-house R&D capabilities from materials to battery cells.
It has developed a sulfide solid-state electrolyte with an ion conductivity retention rate exceeding 93% under high humidity for 4 hours; introduced an all-solid-state cathode with a capacity per gram exceeding 220 mAh/g, capable of stable cycling over 1,200 times; and successfully prepared a 20 Ah all-solid-state battery cell sample with an energy density of 380 Wh/kg and a cycle life exceeding 450 cycles. As early as 2022, SVOLT Energy launched a 20 Ah sulfide all-solid-state battery, becoming China's first enterprise to achieve an all-solid-state sample at this capacity level.

III. Solid-State Battery Plan
End of 2025: Complete development of a 10 Ah-class, 400 Wh/kg all-solid-state battery cell system;
2026: First-generation semi-solid-state mass production ramp-up, with second-generation 400 Wh/kg semi-solid-state battery under development;
2028: Launch third-generation 450 Wh/kg semi-solid-state battery, and plan to develop a 70 Ah+, 500 Wh/kg pure solid-state battery within the same year.

IV. Solid-State Battery Mass Production
SVOLT Energy has completed construction of a dedicated 2.3 GWh semi-solid-state battery production line and finished development of the first-generation 270 Wh/kg prismatic battery cell, with plans for batch trial production of the C-sample in November 2025. This product has already received orders from a well-known European EV brand and has been successfully designated for a central state-owned enterprise's eVTOL project. Meanwhile, SVOLT Energy is developing a pouch semi-solid-state battery aimed at mass production with an energy density of 360 Wh/kg, has formally submitted samples to a central state-owned enterprise in the low-altitude aircraft sector, and plans to achieve its first flight in 2025.

V. Patents and Developments[Solid-State Battery: SVOLT and HSC Sign Agreement to Develop Sulfide Solid-State Electrolyte] On October 16, 2025, Jiangsu HSC New Energy Materials Co., Ltd. and SVOLT Energy Technology (Wuxi) Co., Ltd. held a strategic cooperation signing ceremony at the SVOLT Global R&D Innovation Center in Wuxi. The two parties jointly signed a cooperation agreement on sulfide solid-state electrolyte materials, which are core materials for sulfide solid-state batteries.

[Solid-State Battery: SVOLT Energy's 360Wh/kg Pouch Semi-Solid-State Battery for eVTOL to Achieve First Flight in 2025] On September 11, 2025, a 360Wh/kg semi-solid-state battery integrated into a low-altitude aircraft is expected to make its first flight within 2025! Using nickel-based cathode materials, this process has become the industry's lowest-cost and most scalable mass-production feasible solution for semi-solid-state batteries. SVOLT Energy has completed construction of a dedicated 2.3GWh semi-solid-state battery production line and has finished developing the first-generation 270Wh/kg prismatic battery cell, with plans for batch trial production of the C-sample in November 2025. The product has already received orders from a well-known European EV brand and has been successfully designated for a central state-owned enterprise's eVTOL project. Meanwhile, SVOLT Energy is developing a mass-production-oriented pouch semi-solid-state battery with an energy density of 360Wh/kg, which has been formally sampled to a central state-owned enterprise in the low-altitude aircraft sector and is scheduled to achieve its first flight in 2025.

VI. Introduction to SVOLT Energy Technology
SVOLT Energy Technology Co., Ltd. is a global leader in short-blade batteries. The company was founded in 2018 and is headquartered in Jintan District, Changzhou City, Jiangsu Province. It focuses on the R&D, production, and sales of battery cells, modules, battery packs, and a full range of products including large-scale ESS, unit ESS, medium-sized ESS, residential ESS, and portable energy storage.
It has supplied power batteries to customers such as Great Wall Motor, Geely, BMW Mini, Stellantis, Li Auto, and VOYAH.

According to SMM projections, all-solid-state battery shipments are expected to reach 13.5 GWh by 2028, while semi-solid-state battery shipments are forecast to reach 160 GWh. By 2030, global lithium-ion battery demand is estimated to be around 2,800 GWh, with the compound annual growth rates from 2024 to 2030 for lithium-ion battery demand in EVs, ESS, and consumer electronics at approximately 11%, 27%, and 10%, respectively. The global penetration rate of solid-state batteries is projected to be around 0.1% in 2025, and is expected to reach about 4% for all-solid-state batteries by 2030. By 2035, the global penetration rate of solid-state batteries may approach 10%.

**Note:** For further details or inquiries regarding solid-state battery development, please contact:
Phone: 021-20707860 (or WeChat: 13585549799)
Contact: Chaoxing Yang. Thank you!