Overview: A breakthrough in Indian energy storage
Researchers at Nagaland University have announced a breakthrough in flexible energy storage: a wearable-friendly, cobalt-doped molybdenum diselenide-based supercapacitor. The device promises to power next-generation wearable electronics, electric vehicles (EVs), and renewable energy systems while helping India reduce its dependence on imported batteries. Supported by the Indian Institute of Science (IISc) Bangalore and funded by the Anusandhan National Research Foundation (ANRF), the work marks a significant step toward Atmanirbhar Bharat in clean energy and storage technology.
Technology: 2D materials meet flexible engineering
The team at the Advanced Materials for Device Applications (AMDA) Research Laboratory in Lumami, Nagaland University, crafted a working prototype that goes beyond laboratory material synthesis. The centerpiece is cobalt-doped molybdenum diselenide, a cutting-edge two-dimensional (2D) material that brings together flexibility, high energy storage, and durability—critical traits for portable and wearable devices. Among several dopants tested (tungsten, vanadium, and cobalt), cobalt emerged as the most effective for energy storage performance.
Key performance metrics
- Energy density: 34.54 Wh kg^-1
- Cycle stability: retains performance after more than 10,000 charge-discharge cycles
- Durability: maintains functionality under repeated bending and twisting
Applications: from wearables to mobility
In the near term, the flexible supercapacitor is poised to enhance health-monitoring devices, IoT gadgets, and robotics. Looking ahead, the technology could improve regenerative braking systems in EVs, offer quick boost capabilities for acceleration, and extend the lifespan of conventional batteries in various energy systems. The device’s combination of flexibility and high energy density makes it particularly suitable for wearable electronics that demand reliable power and mechanical resilience.
Industry relevance and next steps
Researchers emphasize that the real-world impact will come from refining the electrode–electrolyte interface and ensuring safety with solid-state gel electrolytes. Scaling the process toward pilot-level production and establishing industry collaborations are on the roadmap to move this technology from lab benches to commercial products. The broader aim is to strengthen India’s sustainable and self-reliant energy solutions by reducing dependence on imported energy storage components.
Quotes and vision
Dr. Vijeth H, Assistant Professor of Physics at Nagaland University, notes, “The device combines flexibility, high energy storage, and durability, which are critical for future portable and wearable technologies. The study also marks the first direct comparison of tungsten, vanadium, and cobalt doping in molybdenum diselenide for energy storage, with cobalt proving most effective.”
Pewe-u Marhu, Research Scholar, adds, “The next steps involve optimising the electrode–electrolyte interface, improving safety with solid-state gel electrolytes, and scaling up toward pilot production. Collaborations with industry partners are essential to bridging the gap to commercialisation.”
Conclusion
This development represents a notable advancement in renewable energy storage and wearable technology. By delivering high energy density in a flexible form factor and demonstrating robust cycling stability, cobalt-doped molybdenum diselenide-based supercapacitors could accelerate the adoption of wearables, EVs, and clean energy systems in India and beyond.
