High performance battery-supercapacitor hybrid using vanadium and graphene
Introducing a hybrid energy storage solution combining high surface area graphene electrodes and vanadium redox electrolytes. This system offers superior power and energy density, with flexible form factors and potential for reduced costs via alternative materials.
Overview
The high performance battery-supercapacitor hybrid developed by Queen's University leverages advanced materials to achieve superior energy storage capabilities. By utilizing high surface area graphene electrodes paired with vanadium redox electrolytes, this hybrid system delivers enhanced power and energy density compared to conventional systems. Its flexible design allows for diverse form factors, making it adaptable for various storage needs. Additionally, the technology offers the potential to regenerate part of its performance losses over time, ensuring prolonged efficiency.
Technical specifications
- Graphene electrodes: High surface area, convenient to fabricate and functionalize
- Vanadium redox electrolytes: Enhances energy and power density
- Alternative materials: Exploring activated carbon with >2000 m²/g surface area for cost reduction
- Functionalization: Heteroatom (N, S, B, P) protocols to improve surface composition
- Electrode testing: Supercapacitor and battery performance evaluated for anodic and cathodic reactions
Technology readiness level
The technology is currently at Technology Readiness Level 4, indicating that it has been validated in a laboratory environment. Future efforts will focus on improving hybrid performance through material functionalization and performance testing, aiming to surpass the energy density of nickel and zinc-based batteries while maintaining superior power and cycle stability.
About Queen's University
Queen’s University is a comprehensive public research institution with a large student body and global alumni network based in Kingston, Ontario. For industry, it offers a research and technology park with wet/dry labs, shared core facilities, and collaboration models from sponsored research to contract testing. Clinical translation is enabled by integration with Kingston’s major hospital system, providing governed access to patients, clinicians, and health data. Talent pipelines are built through structured internship programs and project-based engagements. Research is backed by Canada’s Tri‑Council agencies and the Canada Foundation for Innovation, plus provincial and industry support, and a dedicated tech transfer office advances IP, licensing, and startups.
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