Researcher at TU Graz demonstrates in Nature Materials that it is possible to combine the high-energy density of batteries with the high-power output of super capacitors in a single system – thanks to liquid energy storage materials.
Batteries and super capacitors are electrochemical energy storage media, but they are as different as night and day. Both are capable of energy storage and targeted energy release – and yet there are major differences between the two. Batteries store very large amounts of energy that is released slowly but constantly. By contrast, super capacitors can only store small amounts of energy, but they release this energy much faster and more powerfully with large short-term peak currents.
Stefan Freunberger at TU Graz together with a group of researchers from Université de Montpellier in Southern France had a sudden flash of insight. Why not exploit the benefits of batteries and super capacitors simultaneously and combine them in some kind of energy hybrid, they asked themselves. In the current issue of renowned scientific journal Nature Materials the group introduces its approach, describing a liquid energy storage material for the first time in a European Research Council (ERC) sponsored study. While the energy density of this material is comparable to that of a battery, its power output equals that of a super capacitor.
Ions with an urge to move
“Batteries release energy so slowly and take so long to charge because their energy storage materials are solid. This make it difficult for the ions to move. But as the ions in a super capacitor move in a liquid, they are much more mobile than in a solid body,” explains Stefan Freunberger from the Institute of Chemistry and Technology of Materials at TU Graz. The novel redox active ionic liquid developed by Freunberger in co-operation with the French colleagues consists of an organic salt that is liquid at a temperature of just below 30 °C – only slightly above room temperature. Similar to a solid storage medium this liquid can store many ions, but allows them to be much more mobile.
The sudden flash of insight of Freunberger and colleagues culminated in a first approach to create an integrated energy supply system that offers a constant energy supply with high-power output. In some cases we are still faced with an either/or decision. Automatic doors, for example in trams or trains, are typical candidates for super capacitors. Energy is only needed for a very short time but when it is, a high-power output is of the essence. In other cases batteries are clearly the first choice. “But our principle of an energy hybrid can offer enormous advantages, for example when applied in electric vehicles. So far, electric vehicles often carry a combination of different battery types or battery systems together with super capacitors. If we had a single system that combines the benefits of both energy storage types, we could save considerable space and resources,” remarks Freunberger.
Learn more: Energy hybrid: Battery meets supercapacitor
Receive an email update when we add a new ENERGY HYBRID article.
The Latest on: Energy hybrid
via Google News
The Latest on: Energy hybrid
- Tangible solutions to Ethiopia’s energy and infrastructure challengeson November 20, 2019 at 2:01 am
In April 2019 Siemens signed a Memorandum of Understanding (MoU) with the Investment Commission of Ethiopia, to address the country’s energy and infrastructure sector challenges ... Siemens will ...
- Lincoln Corsair Grand Touring is the brand's newest plug-in hybridon November 19, 2019 at 11:56 pm
Another plug-in-hybrid crossover is coming to Lincoln lineup ... Preserve EV and Pure EV. The former holds back electrical energy or allows the engine to charge the battery up to 75% while driving, ...
- Ford hybrid SUVs, Lyft rents EVs, California bans GM: Today’s Car Newson November 19, 2019 at 8:50 am
California bans GM and others who want to limit its clean-air authority. Hybrid versions of Ford’s biggest SUVs are on the way. And another Presidential candidate looks at transportation and clean ...
- Silicon Based Battery Technology Gains Momentum as Gridtential Energy and Hoppecke Battery Enter Evaluation Agreementon November 19, 2019 at 6:57 am
Gridtential Energy provides non-exclusive licenses for the technology, enabling manufacturing partners to easily adapt their factories to provide high performing, higher voltage 24V & 48V batteries to ...
- Report by Brattle Economists Evaluates Effectiveness of Energy Efficiency Administrator Modelson November 18, 2019 at 2:16 pm
Regardless of the EE administrator model, key factors for success are state-level energy efficiency goals, dedicated EE funding ... third-party administrator models; and hybrid models. The study ...
- Ichor Systems Announces New Product Line - Hybrid Conventional and Modular Diaphragm Valves A reliable and space saving solution for flow controlon November 18, 2019 at 12:00 am
To learn more, visit https://info.ichorsystems.com/hybrid-valves or contact us at https://www.ichorsystems.com/contact-us For more information, contact: Marty Dertinger Director of Sales & Marketing ...
- Wärtsilä, PSA Marine Collaborate on Clean Energy Shippingon November 15, 2019 at 12:28 pm
Specific collaboration areas envisioned include the use of electric or hybrid technologies that further the use of low-emissions energy and propulsion systems; the incorporation of next-generation ...
- Achieving Real-Time Predictive Maintenance for Wind Farms with Hybrid Twinon November 15, 2019 at 6:18 am
The WindTwin platform will use the Hybrid Twin to provide continuous preventative and predictive maintenance information, condition monitoring, and for understanding power setting operation scenarios.
- Wight Shipyard Builds New Hybrid Vesselon November 14, 2019 at 9:09 pm
The new CWind Hybrid SES will enable Ørsted to not only deliver and service windfarms efficiently through reduced transit times, but support Ørsted’s green energy ambition. The Hybrid SES crew ...
via Bing News