Supercapacitors

Today we published a new edition of our Graphene Supercapacitors Market Report, with all the latest information. The supercapacitor market and industry is facing high demand and graphene is a pivotal material for this application. The report is now updated to July 2026, with all the latest projects, news and research results.

Reading this report, you'll learn all about:

• The advantages of using graphene in supercapacitors
• Various types of graphene materials
• Market insights and forecasts
• What's on the market today

The report package also provides:

• A list of all graphene companies involved with supercapacitors
• Prominent research activity in this field
• Free updates for a year

This Graphene Supercapacitors market report provides a great introduction to graphene materials used in the supercapacitor market, and covers everything you need to know about graphene in this niche. This is a great guide for anyone involved with the supercapacitor market, nanomaterials, electric vehicles and mobile devices.

Skeleton Technologies has introduced GrapheneUPS, a high‑density double‑conversion UPS system designed for AI and GPU‑heavy data centers that need continuous power protection while complying with increasingly stringent grid connection codes. The system combines load‑proximate backup with active grid‑stabilizing functions and is based on Skeleton’s inherently safe, fast‑cycling graphene‑enhanced supercapacitor storage, making it an interesting case study for engineers working with high‑power supercapacitor and SuperBattery‑class solutions in modern UPS architectures.

GrapheneUPS uses a continuous AC‑DC‑AC double‑conversion topology that isolates sensitive AI computing equipment from grid disturbances such as voltage dips, short interruptions and fluctuations during grid restoration, while also helping data centers meet evolving grid connection and grid code requirements without separate stabilization equipment at the point of connection. According to Skeleton, the system can enable up to 40% more computing power while requiring up to 44% less grid connection capacity, and delivers roughly 50% lower volume for the same performance compared to conventional UPS systems, supporting deployment in white space, gray space or as a containerized outdoor solution.

Researchers from India's Homi Bhabha National Institute and Bhabha Atomic Research Centre have demonstrated an efficient route for converting high-density polyethylene (HDPE) plastic waste into high-quality turbostratic graphene using flash Joule heating (FJH), while directly validating its performance in supercapacitor electrodes.

The approach relies on rapid capacitive discharge to drive extremely fast resistive heating of the polymer precursor, reaching temperatures above 2500°C within milliseconds. This ultrafast thermal spike induces carbonization and graphitization in a single step, eliminating the need for external furnaces, catalysts, or solvents. Compared to conventional graphene production routes such as chemical vapor deposition or chemical oxidation, the FJH process is significantly simpler, avoids hazardous chemicals entirely, and reduces both energy consumption and environmental impact.

United Utilities has secured £9.5 million in funding from Ofwat’s sixth Water Breakthrough Challenge to scale up its biogas‑to‑graphene technology and demonstrate how wastewater can become a major source of advanced materials and clean hydrogen. The company will build on a world‑first trial to produce clean hydrogen and graphene from sewage‑derived biogas, aiming to move from pilot to full‑scale deployment and open new commercial routes for graphene in construction and energy storage.

Having already proven the concept with technology partner Levidian, United Utilities will now install a larger unit designed to produce roughly three times more sustainable hydrogen and graphene than the earlier demonstration system. The project is one of 19 winners in Ofwat’s latest Water Breakthrough Challenge round, with United Utilities leading two projects and partnering on nine more, all focused on turning wastewater streams into valuable resources.

Skeleton Technologies has announced the first close of a larger funding round at €33 million. This brings its total venture capital funding to €392 million in preparation for its planned initial public offering (IPO) in the United States in 2027.

The new round expands Skeleton’s investor base with the addition of Axon Partners Group, SmartCap, and Taiwania Capital. More investors will be announced as part of a larger round ahead of the IPO.

Researchers from the University of California, Lawrence Livermore National Laboratory and Lawrence Berkeley National Laboratory recently developed a graphene-enabled 3D printing platform that addresses a fundamental limitation in electrochemical energy storage: the tradeoff between electrode thickness and transport efficiency.

While thicker electrodes increase energy density by incorporating more active material, they typically suffer from poor ion transport and high resistance. To overcome this, the team designed interpenetrating 3D electrode architectures using an acrylate-based resin infused with graphene oxide (GO). The inclusion of GO enables the fabrication of highly porous, conductive structures that support both efficient ion diffusion and electron transport throughout ultra-thick electrodes.

Researchers from the Shanghai Institute of Technology, Naval University of Engineering and Liaoshen Industries Group have developed a highly porous NiCo₂V₂O₈@GO hollow sphere electrode material that could improve supercapacitor performance. This innovation tackles the persistent challenge of low energy density in supercapacitors, which excel in power delivery and cycle life but lag behind batteries in stored energy.

The team first explored a series of ternary metal vanadates - NiₓCo₃₋ₓV₂O₈, NiₓMn₃₋ₓV₂O₈, and NiₓCu₃₋ₓV₂O₈ (x = 1, 1.5, 2) - to pinpoint optimal metal combinations for electrochemical activity. They then refined NiCo₂V₂O₈@GO via anion exchange on metal glycerolate precursors, followed by annealing to form yolk-double-shell hollow nanospheres coated with graphene oxide (GO). This core-shell design leverages GO's 2D scaffold to prevent nanoparticle aggregation, boost electrical conductivity, and expand the electrochemically accessible surface area.

Carbon-Ion Energy has announced that it is re-examining the integration of graphene into its supercapacitors in collaboration with graphene producers Levidian and HydroGraph, which supply ultra-pure graphene (99.9% and 99.8% purity). Both companies use advanced combustion-based methods that produce highly consistent graphene.

The company has experience with graphene since the mid-2010s, having previously collaborated with other graphene suppliers. Carbon-Ion believes newer graphene structures may enhance ion transport and energy storage efficiency in their supercapacitors by optimizing inter-layer spacing and morphology.

Researchers from China's Dalian Jiaotong University and South China Academy of Advanced Optoelectronics have developed a graphene-based electrode for supercapacitors using a novel slit evaporation self-assembly process. The resulting freestanding sulfuric acid-treated reduced graphene oxide/commercial graphene (S-ATrGO/CG) films demonstrate excellent energy storage capabilities and durability, potentially benefitting graphene-enhanced supercapacitors.

The team introduced a capillary slit-assisted self-assembly method that leverages narrow glass slits to guide the controlled stacking of graphene flakes during solvent evaporation. This process promotes highly ordered, laminated structures, reducing the common issue of flake restacking that limits ion transport in conventional graphene films. Capillary forces, combined with π–π interactions and electrostatic attraction, ensure that sulfuric acid-treated graphene oxide (ATGO) and commercial graphene (CG) align into continuous, freestanding films with high structural integrity.

Researchers from Sungkyunkwan University and Hubei University of Technology have reported a scalable and cost-effective process to produce an all-solid-state asymmetric micro-supercapacitor based on nanostructured flower-like MoS₂/graphene cathode and activated carbon anode. The MoS₂/graphene nanocomposites were synthesized via a hydrothermal method, leveraging the synergistic effect of pseudocapacitive MoS₂ and highly conductive graphene to enhance electrode capacitance and cycling stability. 

Facile bar-coating and laser cutting techniques were used to fabricate the asymmetric micro-supercapacitor. The device has a stable operating voltage of 1.6 V, and achieves an impressive area capacitance of 183.7 mF cm⁻², and a maximum area energy density of 65.3 mWh cm⁻², which the team says is the highest areal energy density among MoS₂-based micro-supercapacitors.