E-Power Granted Landmark Patent for Multi-Element Doped Hard Carbon Composites, Accelerating Sodium-Ion Battery Commercialization
DOVER, USA, May 08, 2026 (GLOBE NEWSWIRE) — E-Power Inc. (“E-Power”, the “Company”, “we” or “our”) (NASDAQ: EPOW), a leading provider of AI Data Center (AIDC) microgrid solutions and advanced battery materials, today announced the successful patent grant and registration for its proprietary invention: “A Phosphorus-Silver-Silicon Co-Doped Hard Carbon Composite Material and Its Preparation Method” (Patent No: CN2023105784527).
The authorization of this patent marks a pivotal step in the industrialization of E-Power’s advanced hard carbon composite technologies. This achievement provides a robust foundation for the domestic transformation of research into commercial applications, driving innovation in the frontier of new material science.
Revolutionizing Sodium-Ion Battery Anodes
Hard carbon is currently the preferred anode material for the industrialization of sodium-ion batteries. Due to its low degree of structural order and large interlayer spacing, hard carbon effectively overcomes the inherent inability of traditional graphite to intercalate sodium ions.
While common composites involve pitch/resin co-carbonization or integration with conductive materials, E-Power’s P-Ag-Si/HC (Phosphorus-Silver-Silicon Co-Doped Hard Carbon) represents a high-order technical breakthrough designed to optimize performance:
- Enhanced Capacity and Stability: By incorporating high-capacity Silicon (Si) and high-conductivity Silver (Ag) into the Hard Carbon (HC) matrix, the material achieves superior specific capacity and long-term cycling stability.
- Interface Regulation: The addition of Phosphorus (P) facilitates the tuning of the electrochemical interface, effectively managing the volume expansion typical of silicon during sodium storage and addressing the conductivity limitations of standard hard carbon.
- Operational Advantages: The resulting composite maintains the core benefits of hard carbon, including low cost, high charge-discharge rates, and exceptional performance in low-temperature environments.
Driving the Future of Energy Storage
This patent reinforces E-Power’s strategic focus on diversifying its portfolio within the battery material sector. By mastering multi-element doping and pore-structure regulation, the company is providing a critical solution for the next generation of energy storage systems, particularly as the industry shifts toward cost-effective sodium-ion alternatives.
Mr. Haiping Hu, Chairman of E-Power, said:
This patent is a testament to our commitment to leading-edge material innovation,
“The P-Ag-Si/HC technology provides a sophisticated answer to the stability and conductivity challenges in sodium-ion batteries, positioning E-Power as a key player in the commercialization of this vital energy transition technology.”
READ the latest Batteries News shaping the battery market
E-Power Granted Landmark Patent for Multi-Element Doped Hard Carbon Composites, Accelerating Sodium-Ion Battery Commercialization, source
