Problem & Motivation:
Multi-hour grid storage using lithium-ion chemistry faces risks of thermal runaway, capacity fading over daily cycles, and high material replacement costs, creating a critical gap for long-duration stationary grid buffering.
Technological Breakthrough & R&D:
Advanced stack design and electrolyte chemistry for Vanadium Redox Flow Batteries (VRFB), including a patented multilayer sandwich cell design and organic additives to suppress hydrogen evolution during charging. Innovations also replace high-cost membrane materials with durable, low-cost ceramic-hydrocarbon porous separators.
Ecosystem & Field Deployment:
Pilot stack construction and field verification carried out in strategic industrial partnership with High Energy Batteries (India) Ltd. in Trichy, with development support from the ONGC Energy Centre Trust.
Tangible Impact Created:
Delivers an inherently safe, completely non-flammable long-duration energy storage system with a 20+ year asset life and zero capacity degradation over time, enabling power output (kW) and storage capacity (kWh) to scale independently for multi-hour grid stability.