Key Points: On July 17, 2026, Jiuwu Hi-Tech announced via its official public information platform that its self-developed LATP solid-state electrolyte had been successfully applied in a 1 Ah pouch battery (NCM811 + graphite anode) and had passed the extreme overcharge and overdischarge abuse tests in accordance with GB 38031-2020 “Safety Requirements for Power Batteries Used in Electric Vehicles.” Jiuwu Hi-Tech's LATP solid-state electrolyte, applied in an NCM811 pouch battery, passed the GB 38031-2020 extreme overcharge (4.62 V) and overdischarge (0 V) tests, with no smoke, fire, or explosion throughout, a temperature rise of ≤5°C, and a significantly expanded safety margin. The company adopts a dual-track layout of oxide (LLZO/LATP) + sulphide, has achieved mt-scale mass production and supplies leading battery cell enterprises, while also advancing hundred-mt-scale pilot-scale capacity expansion. Leveraging nearly 30 years of ceramic membrane technology expertise, it is positioning itself in the key material track for solid-state batteries.
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Introduction
On July 16, 2026, ECOPRO BM held an investor briefing for retail investors at the NH Investment & Securities headquarters in Yeouido, Seoul. Management representative Kim Jangwoo, R&D Executive Director Gong Bohyeon, and Procurement Executive Director Shin Hosang attended and spoke. On July 19, the company officially unveiled its roadmap for the development of core materials for all-solid-state batteries, covering areas such as solid-state electrolytes, next-generation cathode and anode materials, and sodium-ion batteries.
Introduction
1. Test Information
On July 17, 2026, Jiuwu Hi-Tech announced via its official public information platform, that its self-developed LATP solid-state electrolyte had been successfully applied in a 1 Ah pouch battery (NCM811 + graphite anode) and had passed the extreme overcharge and overdischarge abuse tests in accordance with GB 38031-2020 “Safety Requirements for Power Batteries Used in Electric Vehicles.” During the test, the initial SOC of the battery cell was 95%. In the overcharge condition, the end-of-charge voltage was intentionally pushed to a peak of 4.62 V (equivalent to nearly 20% extra energy input), while in the overdischarge condition, the cell was discharged directly to 0 V. The results showed that throughout the entire test and subsequent resting observation, the cell exhibited no smoke, fire, explosion, swelling, or leakage. In the overdischarge test, the temperature rise did not exceed the ambient temperature +5°C. Jiuwu Hi-Tech stated that the LATP material, with its wide electrochemical window and excellent interface stability, effectively suppressed the risk of thermal runaway under extreme conditions, fundamentally expanding the safety margin of high-specific-energy batteries and providing a solid guarantee for the safe application of power batteries. Currently, the material is applied in the form of a coated separator, and the company is actively promoting verification cooperation with downstream battery cell enterprises.
Although the high energy density of ternary lithium batteries offers significant advantages, abuse issues such as overcharge and overdischarge represent key technical challenges and are critical considerations for promoting their large-scale application. Addressing this industry pain point, recently, Jiuwu Hi-Tech applied its self-developed LATP solid-state electrolyte in a 1 Ah NCM811 pouch battery and conducted extreme overcharge and overdischarge abuse tests under the GB 38031-2020 national standard. The results showed that Jiuwu Hi-Tech's LATP material effectively suppressed the thermal runaway risk under extreme conditions, fundamentally expanding the battery's safety margin.
In the overcharge test, the R&D team proactively pushed the end-of-charge voltage to a peak of 4.62 V—equivalent to forcing nearly 20% extra energy into a fully charged battery. Throughout the process, the battery cell exhibited no smoke, fire, or explosion. After standing for several hours, the voltage pulled back naturally, and no delayed thermal runaway occurred. In the overdischarge test, the discharge cut-off voltage was set to 0 V, the discharge voltage plateau declined smoothly, the maximum temperature rise did not exceed ambient temperature + 5°C, and the battery cell showed no deformation, swelling, or leakage.
This marks a major breakthrough for Jiuwu Hi-Tech in the field of key materials for solid-state batteries, providing a solid guarantee for the safe application of high-specific-energy power batteries.
2. Introduction to LATP
LATP (Li₁₊ₓAlₓTi₂₋ₓ(PO₄)₃) is an oxide solid-state electrolyte with a NASICON structure. It features a room-temperature ionic conductivity of 1.2–1.3×10⁻³ S/cm, a wide electrochemical window (>5 V vs Li/Li⁺), excellent thermal stability (maintaining structural stability above 800°C), and stability against air and moisture without requiring a glovebox, making it one of the mainstream routes for oxide solid-state battery electrolytes. Jiuwu Hi-Tech is a technology-oriented enterprise in China with a dual business layout of “ceramic membranes + solid-state batteries.” This test serves as an important technical validation of the LATP route for solid-liquid hybrid battery applications.
I. Technology Roadmap
Jiuwu Hi-Tech adopts a dual-track approach advancing both oxide and sulfide technologies, leveraging nearly 30 years of experience in inorganic material R&D to make a cross-disciplinary breakthrough from ceramic membranes to key materials for solid-state batteries.
1. Oxide Solid-State Electrolytes (LLZO and LATP)
After nearly three years of technical research, the company has successfully developed a novel preparation process for oxide solid-state electrolytes (LLZO and LATP series powders) with completely independent intellectual property rights. Core technologies include:
“Low-Temperature Solid-State–Atmosphere Sintering” Synergetic Process:By combining sintering kinetics control with multi-element doping modification technology, it mitigates the problem of lithium volatilization during traditional high-temperature synthesis and reduces production energy consumption.
Nano-Scale Narrow Particle Size Distribution Control:Using proprietary grinding technology with self-developed composite dispersants, the particle size is controlled to D50 < 500 nm and D90 < 900 nm.
Batch-to-Batch Consistency:The batch-to-batch consistency exceeds 95%, providing key technical assurance for large-scale industrial application.
High-Performance Indicators:The room-temperature ionic conductivity reaches 1.0 mS/cm for LLZO and 1.30 mS/cm for LATP.
2. Sulfide Solid-State Electrolyte Material (High-Purity Lithium Sulfide)
The company further independently developed a synthesis and scale-up production process for lithium sulfide, successfully achieving a strategic extension from oxide to sulfide key materials. The lithium sulfide product has a purity of no less than 99.8%, and 99.9% purity can be customized to client requirements. It features low impurity content and excellent batch stability, meeting the synthesis requirements of sulfide solid-state electrolytes (such as LGPS, LPSCl, etc.).
3. Product Application Scenarios
LLZO and LATP materials can be used in the fabrication of semi-solid-state and all-solid-state batteries. Main application scenarios include:
Separator coating:Reduces electrolyte usage, inhibits lithium dendrite growth, and enhances battery safety
Cathode/Anode material coating:Enhances material structural stability and improves battery cycle life
Electrode blending:Increases ionic conductivity, reduces interfacial impedance, and optimizes battery rate performance
Electrolyte membrane:Matches high-energy electrode materials to increase battery energy density
II. Battery Introduction
1. Battery Cell System
Jiuwu Hi-Tech applied its self-developed LATP solid-state electrolyte to a 1Ah NCM811 pouch battery (ternary cathode + graphite anode) with an initial SOC of 95%. The NCM811 high-nickel system was selected as the test basis precisely because high-nickel materials are the mainstream choice for boosting battery energy density, yet they also face safety challenges far greater than ordinary ternary materials due to higher chemical reactivity and poorer thermal stability.
2. Safety Test Verification
The tests were conducted strictly in accordance with GB38031-2020, "Safety Requirements for Traction Batteries of Electric Vehicles," and GB31485-2015.
3. Core Advantages
Jiuwu Hi-Tech's self-developed LATP solid-state electrolyte material features an exceptionally wide electrochemical window and outstanding interfacial stability. When abnormal battery voltage fluctuations occur, it effectively blocks thermal runaway reactions, fundamentally reducing safety hazards. Semi-solid-state batteries equipped with LATP material achieve both high energy density and ultimate safety in high-nickel, high-energy systems.
III. Planned Capacity
1. Current Capacity Status
Jiuwu Hi-Tech has established a multi-form product supply system in the solid-state electrolyte niche, spanning powders, slurries, and dense ceramic sheets, with mt-level production capacity for LLZO and LATP powders. The company has achieved mass production of oxide electrolytes and has made stable, multi-batch deliveries to leading domestic battery cell enterprises.
2. Capacity Construction Plan
The company's solid-state electrolyte business is currently in the stage of small-volume supply to leading domestic battery cell enterprises and capacity construction. The timing of revenue contribution depends on the progress of downstream industrialisation.
In 2026, the company will accelerate pilot-scale construction, production, and marketing, optimize material performance, and actively establish stable partnerships with top battery enterprises. Regarding capacity planning, the company stated it will closely monitor downstream demand release and synchronously carry out capacity planning and construction.
In the future, the company will continue to follow developments in the solid-state battery industry, closely align with downstream demand, and increase R&D and industrialisation investments in solid-state electrolyte materials, leveraging its green smart factories and proprietary innovative processes.
IV. Company Profile and Patents
1. Company Profile
Jiangsu Jiuwu Hi-Tech Co., Ltd. (abbreviated as Jiuwu Hi-Tech, stock code: 300631.SZ) was founded in 1997 by an academician team from Nanjing Tech University. It is a high-tech enterprise dedicated to new material R&D and integrated solutions. The company is a pioneer in China's ceramic membrane technology, with its ceramic membrane market share ranking first in China and among the top three globally for multiple consecutive years.
Its honors and qualifications include:
Among the first batch of nationally recognized high-tech enterprises
National Specialized and Sophisticated "Little Giant" Enterprise
National Manufacturing Industry Single Champion
Industry Leader in China's Membrane Sector Ceramic Membrane Field
Recipient of four National Science and Technology Progress Awards, one National Technology Invention Award, and one China Patent Excellence Award
Awarded the title of "Jiangsu Province Outstanding Enterprise" in 2023
Recognized as a "National-Level Green Factory" in 2025
The company has built a complete business industry chain encompassing new material R&D, technology development, process design, complete equipment manufacturing, turnkey solution provision, and project operations, with products exported to over 40 countries and regions worldwide.
In Q1 2026, the company’s main operating revenue was 126 million yuan, up 46.29% YoY; net profit attributable to the parent company was 15.83 million yuan; core net profit was 13.99 million yuan, up 13.11% YoY.
2. Patents and Intellectual Property
Jiuwu Hi-Tech has developed powder preparation processes with fully independent intellectual property rights for lithium lanthanum zirconium oxide (LLZO), lithium aluminum titanium phosphate (LATP), and high-purity lithium sulphide (Li₂S). The company has established a complete R&D technology system covering both oxide and sulphide solid-state electrolytes, and has filed numerous invention patents related to the core technologies. The performance metrics of the company's independently developed oxide solid-state electrolyte powder have reached or exceeded mainstream industry standards.
Core patent directions include:
LATP solid-state electrolyte formulation and low-temperature sintering process (<1000℃)
High-adhesion coating process for LATP and PE/PP separators
LATP coating process for cathode particles
Composite separator structure and coating equipment
V. Financing and Partnerships
1. Client Collaboration
Jiuwu Hi-Tech’s LLZO and LATP oxide solid-state electrolyte materials, leveraging their excellent comprehensive performance, have gained recognition from multiple downstream application enterprises. Small-batch supply has been successfully achieved for leading domestic battery cell manufacturers. The products have seen small-batch application at various separator manufacturers and battery cell manufacturers.
The company will accelerate collaboration on oxide electrolytes within the industry chain to meet the diverse needs of downstream clients, while continuously increasing investment in the R&D and validation of sulphide solid-state electrolytes and the key material lithium sulphide, maintaining close communication with downstream producers.
2. Financing Updates
On July 17, 2026, Jiuwu Hi-Tech held an online roadshow for its convertible bond issuance via the Value Online platform, attracting participation from multiple institutional investors. The company's management engaged in in-depth exchanges with investors on topics of market interest, including convertible bond repayment plans, the progress of specialized inorganic membrane projects, and the strategic layout of solid-state electrolytes and salt lake lithium extraction.
3. Shareholder Background
The company's major shareholder is Dehui Group, which focuses on investing in high-tech enterprises in fields such as intelligent equipment and new materials.
VI. Company Developments
1. July 2026: Overcharge and Overdischarge Test Verification
Jiuwu Hi-Tech applied its independently developed LATP solid-state electrolyte to a 1Ah NCM811 pouch battery and completed extreme overcharge and overdischarge abuse tests under the GB38031-2020 national standard. The battery cell exhibited no smoke, fire, or explosion throughout the process, verifying the material's safety performance under extreme conditions.
2. July 17, 2026: Investor Survey
During a survey, the company stated that its solid-state electrolyte business is currently in the stage of small-batch supply to leading battery cell enterprises in China and capacity construction.
3. May 2026: CIBF2026 Exhibition
Jiuwu Hi-Tech debuted at the 18th Shenzhen International Battery Technology Exchange and Exhibition (CIBF2026), grandly launching a key material matrix for solid-state batteries with fully independent intellectual property rights, covering LLZO, LATP, and high-purity lithium sulfide powder materials. The booth became the focal point of the exhibition, attracting numerous customers from outside China and industry experts for inquiries and discussions.
4. April 2026: Nail Penetration Test Passed
The company conducted nail penetration comparison tests on semi-solid-state batteries and traditional liquid batteries based on the national standard GB31485-2015. The semi-solid-state battery equipped with Jiuwu Hi-Tech's LATP-coated separator showed no combustion or explosion throughout the test, with a maximum surface temperature rise of <40°C at the moment of nail penetration, while the liquid battery's temperature rise exceeded 400°C and experienced violent combustion and explosion.
5. March 2026: Solid-State Battery Technology Conference
Jiuwu Hi-Tech participated in the solid-state battery technology conference with its latest oxide solid-state electrolyte materials and high-purity lithium sulfide products, comprehensively showcasing the innovative leap from "membrane separation" to "solid-state energy."
6. November 2025: Low-Temperature Performance Breakthrough
Research shows that LATP, as a ceramic coating, can significantly reduce the interfacial impedance of the separator, leading to a marked improvement in low-temperature C-rate performance. Its excellent structural stability over a wide temperature range ensures that the ion channels do not "freeze" or become blocked at low temperatures.
Tel: 021-20707860 (or WeChat: 13585549799) Yang Zhaoxing. Thank you!
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