| 1. |
|
|
| 2. |
|
|
| 3. |
- Karlsson, Christoffer, et al.
(författare)
-
Stable Deep Doping of Vapor-Phase Polymerized Poly(3,4-ethylenedioxythiophene)/Ionic Liquid Supercapacitors.
- 2016
-
Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 9:16, s. 2112-2121
-
Tidskriftsartikel (refereegranskat)abstract
- Liquid-solution polymerization and vapor-phase polymerization (VPP) have been used to manufacture a series of chloride- and tosylate-doped poly(3,4-ethylenedioxythiophene) (PEDOT) carbon paper electrodes. The electrochemistry, specific capacitance, and specific charge were determined for single electrodes in 1-ethyl-3-methylimidazolium dicyanamide (emim dca) ionic liquid electrolyte. VPP-PEDOT exhibits outstanding properties with a specific capacitance higher than 300 F g(-1) , the highest value reported for a PEDOT-based conducting polymer, and doping levels as high as 0.7 charges per monomer were achieved. Furthermore, symmetric PEDOT supercapacitor cells with the emim dca electrolyte exhibited a high specific capacitance (76.4 F g(-1) ) and high specific energy (19.8 Wh kg(-1) ). A Ragone plot shows that the VPP-PEDOT cells combine the high specific power of conventional ("pure") capacitors with the high specific energy of batteries, a highly sought-after target for energy storage.
|
|
| 4. |
- Keskinen, Jari, et al.
(författare)
-
Asymmetric and symmetric supercapacitors based on polypyrrole and activated carbon electrodes
- 2015
-
Ingår i: Synthetic metals. - : Elsevier BV. - 0379-6779 .- 1879-3290. ; 203, s. 192-199
-
Tidskriftsartikel (refereegranskat)abstract
- Abstract Supercapacitors were prepared using either two polypyrrole (PPy) composite electrodes or one PPy composite and one activated carbon electrode. The PPy composite electrodes were either freestanding paper-like sheets or PPy films printed on graphite ink coated aluminium/PET laminate substrates, using Cladophora algae derived cellulose as the substrate or binder, respectively. The specific capacitance of the PPy electrodes was found to be about 200 F g−1 depending on the manufacturing method, yielding supercapacitors with capacitances between 0.45 and 3.8 F and energy efficiencies of over 90%. For an asymmetric device with activated carbon positive electrode and PPy negative electrode a capacitance loss of 5% was seen after 14300 cycles.
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
- Malehmir, Alireza, 1977-, et al.
(författare)
-
Smart Exploration Research Centre : Knowledge and Innovation for Exploration of Critical Raw Materials
- 2024
-
Ingår i: First Break. - : European Association of Geoscientists & Engineers. - 0263-5046 .- 1365-2397. ; 42:8, s. 89-93
-
Tidskriftsartikel (refereegranskat)abstract
- In response to the rising needs for long-term research and innovation in the field of critical raw material exploration, the Smart Exploration Research Centre was established in 2024 in Sweden. Funded by the Swedish Foundation for Strategic Research (SSF), this initiative involves collaboration among academic institutions, industry, and the public sector. Building on the H2020-funded Smart Exploration project, which involved 27 European organisations including the European Association of Geoscientists and Engineers (EAGE), the centre aims to advance the global standing of Sweden’s exploration. It seeks to gather skills and create a network that will leave a lasting legacy in the field of mineral exploration. The multidisciplinary centre aims to be a fast-track hub for addressing exploration challenges in the mining industry through synergistic efforts. It connects exploration with mineral processing and nanotechnology to enhance environmental studies and develop effective extraction and beneficiation methods.
|
|
| 8. |
|
|
| 9. |
- Pochard, Isabelle, et al.
(författare)
-
Amine-functionalised mesoporous magnesium carbonate : Dielectric spectroscopy studies of interactions with water and stability
- 2018
-
Ingår i: Materials Chemistry and Physics. - : ELSEVIER SCIENCE SA. - 0254-0584 .- 1879-3312. ; 216, s. 332-338
-
Tidskriftsartikel (refereegranskat)abstract
- A mesoporous magnesium carbonate (MMC) material that was first described in 2013 is currently being investigated for several industrial and life-science-based applications. In this paper, the effect of functionalising the surface of MMC with amine groups on the water interaction properties of the material is investigated in detail. Amine functionalisation enhanced the stability and water sorption-release properties of the material. This is explained by the low affinity between amine-functionalised MMC and water molecules, as attested by the high free/total water ratio shown by dielectric spectroscopy. This low affinity had an impact on the total amount of adsorbed water at low relative humidities (RHs) but not at high RHs. The functionalisation of MMC with amine groups also stabilised the material in moist environments, hindering spontaneous crystallisation. These results provide a more fundamental understanding of the water interaction properties of MMC and are also expected to facilitate optimisation of the stability of materials like this for novel drug formulations and other life-science applications, as well as for their use in humidity control.
|
|
| 10. |
- Rostedt Punga, Anna, et al.
(författare)
-
Flodvåg av långtidssjuka covid-19-patienter väntar
- 2020
-
Ingår i: Dagens Nyheter. - : Dagens Nyheter. - 1101-2447. ; , s. 5-5
-
Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Hittills har sjukvård och forskning fokuserat på de som är svårt sjuka i covid-19. Samhällsspridningen i Sverige gör att även primärvården måste förbereda sig på ett stort antal patienter med komplexa och långdragna symtom. Nu publiceras en av de första vetenskapliga fallbeskrivningarna av en långtidssjuk patient, skriver forskare vid Uppsala universitet.
|
|
