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1404. Electrolysis energy efficiency of highly concentrated FeCl[sub]2 solutions for power-to-solid energy storage technologyUroš Luin, Matjaž Valant, 2022, izvirni znanstveni članek Opis: An electrochemical cycle for the grid energy storage in the redox potential of Fe involves the electrolysis of a highly concentrated aqueous FeCl2 solution yielding solid iron deposits. For the high overall energy efficiency of the cycle, it is crucial to maximize the energy efficiency of the electrolysis process. Here we present a study of the influence of electrolysis parameters on the energy efficiency of such electrolysis, performed in an industrial-type electrolyzer. We studied the conductivity of the FeCl2 solution as a function of concentration and temperature and correlated it with the electrolysis energy efficiency. The deviation from the correlation indicated an important contribution from the conductivity of the ion-exchange membrane. Another important studied parameter was the applied current density. We quantitatively showed how the contribution of the resistance polarization increases with the current density, causing a decrease in overall energy efficiency. The highest energy efficiency of 89 ± 3% was achieved using 2.5 mol L−1 FeCl2 solution at 70 °C and a current density of 0.1 kA m−2. In terms of the energy input per Fe mass, this means 1.88 Wh g−1. The limiting energy input per mass of the Fe deposit was found to be 1.76 Wh g−1.
Ključne besede: electrolysis, ferrous chloride, iron deposition, energy efficiency
Objavljeno v RUNG: 16.02.2022; Ogledov: 1704; Prenosov: 75 (1 glas)
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1405. The spectrum of building block conformers sustains the biophysical properties of clinically-oriented self-assembling protein nanoparticlesEric Voltà-Durán, Julieta M. Sánchez, Hèctor López-Laguna, Eloi Parladé, Laura Sánchez-García, Alejandro Sánchez-Chardi, Ario De Marco, Ugutz Unzueta, Esther Vázquez, Antonio Villaverde, 2022, izvirni znanstveni članek Ključne besede: protein nanoparticles, nanobodies, protein self-assembling
Objavljeno v RUNG: 15.02.2022; Ogledov: 1463; Prenosov: 36
Celotno besedilo (5,71 MB) |
1406. Expression, purification and characterization of SARS-CoV-2 spike RBD in ExpiCHO cellsMatteo De March, Michela Terdoslavich, Sulena Polez, Corrado Guarnaccia, Monica Poggianella, Alessandro Marcello, Nataša Skoko, Ario De Marco, 2022, izvirni znanstveni članek Ključne besede: SARS-CoV-2, spike RBD, ExpiCHO, recombinant protein
Objavljeno v RUNG: 15.02.2022; Ogledov: 1614; Prenosov: 0
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1409. Interface engineering of Ta[sub]3N[sub]5 thin film photoanode for highly efficient photoelectrochemical water splittingJie Fu, Zeyu Fan, Mamiko Nakabayashi, Huanxin Ju, Nadiia Pastukhova, Yequan Xiao, Chao Feng, Naoya Shibata, Kazunari Domen, Yanbo Li, 2022, izvirni znanstveni članek Opis: Interface engineering is a proven strategy to improve the efficiency of thin film semiconductor based solar energy conversion devices. Ta3N5 thin film photoanode is a promising candidate for photoelectrochemical (PEC) water splitting. Yet, a concerted effort to engineer both the bottom and top interfaces of Ta3N5 thin film photoanode is still lacking. Here, we employ n-type In:GaN and p-type Mg:GaN to modify the bottom and top interfaces of Ta3N5 thin film photoanode, respectively. The obtained In:GaN/Ta3N5/Mg:GaN heterojunction photoanode shows enhanced bulk carrier separation capability and better injection efficiency at photo- anode/electrolyte interface, which lead to a record-high applied bias photon-to-current efficiency of 3.46% for Ta3N5-based photoanode. Furthermore, the roles of the In:GaN and Mg:GaN layers are distinguished through mechanistic studies. While the In:GaN layer con- tributes mainly to the enhanced bulk charge separation efficiency, the Mg:GaN layer improves the surface charge inject efficiency. This work demonstrates the crucial role of proper interface engineering for thin film-based photoanode in achieving efficient PEC water splitting.
Ključne besede: photocatalysis, renewable energy
Objavljeno v RUNG: 09.02.2022; Ogledov: 1721; Prenosov: 74
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1410. Delavnica kreativnega pisanja : Ljubljana, Trubarjeva hiša literature, 4., 6., 11., 14., 18., 19., 21. in 26. 6. 2019Leonora Flis, 2019, druga izvedena dela Objavljeno v RUNG: 07.02.2022; Ogledov: 1359; Prenosov: 0
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