A5017969802- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Advanced battery technologies research
- Electrospun Nanofibers in Biomedical Applications
- Global trade and economics
- Additive Manufacturing and 3D Printing Technologies
- Membrane-based Ion Separation Techniques
- Electric and Hybrid Vehicle Technologies
- Advanced Battery Technologies Research
- Global Trade and Competitiveness
- Law, logistics, and international trade
Tampere University
2016-2020
Harvesting micropower energy from the ambient environment requires an intermediate storage, for which printed aqueous supercapacitors are well suited due to their low cost and environmental friendliness. In this work, a systematic study of large set devices is used investigate effect process variability operating voltage on performance stability screen supercapacitors. The current collectors active layers with graphite activated carbon inks, respectively, NaCl as electrolyte. characterized...
Abstract Aqueous supercapacitors offer a safe alternative for intermediate energy storage in harvesting applications, but their performance is limited to relatively warm temperatures. We report the of glycerol as non-toxic anti-freeze water-based electrolyte from room temperature −30 °C at various concentrations. The are manufactured with graphite and activated carbon current collector electrode on flexible polyester (PET) substrate by stencil printing, sodium chloride solution electrolyte....
Abstract In this paper, additive layer-by-layer fabrication of a fully screen printed monolithic supercapacitor exhibiting performance comparable with supercapacitors prepared using lamination is reported. A novel separator material improves the supercapacitor, easily applicable scalable processes such as and stencil printing, based on sustainable biomaterials. The manufacturing offers advantages for system integration avoids need an additional alignment step needed in laminated...
Gelatin offers a safe and sustainable alternative for gel electrolytes in printed supercapacitors. In this work, the performance of non-toxic natural polymer electrolyte is studied screen stencil-printed The basic electrical properties are determined with samples prepared on laboratory scale; subsequently, roll-to-roll used to observe behavior under severe mechanical stress. With 2 M NaCl electrolyte, equal that 1 liquid reached, devices endure bending down 10 mm radius. Even below that,...
Abstract Wearable sensors and electronic systems are of great interest these days, but their viability depends on the availability compatible energy storage solutions. Such can either be integrated into clothing or attached directly to skin, each case presenting a different set requirements for devices. In this work, we examine performance printed supercapacitors while skin. The devices manufactured from benign materials, such as water, carbon sodium chloride, worn forearm chest 24 h...
We have developed thin and flexible supercapacitors that can be combined with energy harvesting components. The substrate material is a laminate foil made of polyethylene terephthalate aluminum. Activated carbon used as the electrode, graphite ink current collector aqueous NaCl or Li <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SO xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> electrolyte. Constant voltage floating experiments...
In this study, we propose a highly flexible environmentally friendly supercapacitor suitable for low-power Internet-of- Everything applications and the effect of bending (both static cyclic) on its electrical performance. The supercapacitors are all comprised carbon electrodes (activated (AC) graphite current collector) printed plastic substrate, with NaCl (aq) electrolyte. capacitance devices is order 0.3 F. Two different substrates (A1 coated PET PP/PA/EVOH/PA/PE [PP-PE]) as well two...
In this work we report a flexible energy supply unit made by printing disposable aqueous supercapacitor modules onto light harvester. order to demonstrate simpler and more scalable manufacturing processes, printed the supercapacitors monolithically instead of laminating electrodes face-to-face integrated series connections into fabrication process. The were backside Organic Photovoltaic (OPV) combine harvesting storage module for under normal indoor conditions, storing it in module, thus...