Year 2021

• Synthesis and Physicochemical Characteristics of Chitosan-Based Polyurethane Flexible Foams

  Publication

  • A. Piotrowska-Kirschling
  • A. Olszewski
  • J. Karczewski
  • Ł. Piszczyk
  • J. Brzeska

  - Processes - Year 2021

  The use of shrimp waste to obtain chitosan (Ch) is an essential issue, considering a circular economy, waste management, and its application to environmentally friendly materials. In this study, northern prawn shells were utilized to obtain Ch, which could then be used for synthesizing chitosan-based polyurethane (PUR+Ch) foams with different Ch concentration. The chemical structure, morphology, hardness, thermal properties, viscoelastic...

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• The effect of Fe on chemical stability and oxygen evolution performance of high surface area SrTix-1FexO3-δ mixed ionic-electronic conductors in alkaline media

  Publication

  • K. Lankauf
  • A. Mroziński
  • P. Błaszczak
  • K. Górnicka
  • J. Ignaczak
  • M. S. Łapiński (formerly: M. Łapiński)
  • J. Karczewski
  • G. Cempura
  • P. Jasiński
  • S. Molin

  - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Year 2021

  Development of environmentally friendly, high performing oxygen evolution reaction (OER) catalysts is an important research challenge. In this work, iron doped strontium titanates with a general formula SrTi1-xFexO3-δ (x = 0.35, 0.50, 0.70, 0.90, and 1.00) denoted as STFx, were synthesized via a solid state reaction technique and characterized in terms of oxygen evolution reaction electrocatalysis in an alkaline electrolyte (0.1...

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• The unstable thermoelectric effect in non-stoichiometric Cu2Se during the non-equilibrium phase transition

  Publication

  • B. J. Trawiński (formerly: B. Trawiński)
  • M. S. Łapiński (formerly: M. Łapiński)
  • B. Kusz

  - JOURNAL OF MATERIALS SCIENCE - Year 2021

  The superionic α ↔ β phase transition in Cu1.96Se thermoelectric material is investigated by means of thermal analysis (DSC) and measurements of Seebeck coefficient and electrical conductivity. Results of the DSC measurements with 1–10 K/min heating and cooling rates show that the material is close to the equilibrium phase composition during the transformation. However, the kinetic limitation of the process exists, which is indicated...

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Year 2020

• Anodic titania nanotubes decorated with gold nanoparticles produced by laser-induced dewetting of thin metallic films

  Publication

  • K. Grochowska
  • N. Nedyalkov
  • J. Karczewski
  • Ł. Haryński
  • G. Śliwiński
  • K. Siuzdak

  - Scientific Reports - Year 2020

  Herein, we combine titania layers with gold species in a laser-supported process and report a substantial change of properties of the resulting heterostructures depending on the major processing parameters. Electrodes were fabricated via an anodisation process complemented with calcination to ensure a crystalline phase, and followed by magnetron sputtering of metallic films. The obtained TiO2 nanotubes with deposited thin (5, 10...

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• Formation of the hollow nanopillar arrays through the laser-induced transformation of TiO2 nanotubes

  Publication

  • J. Wawrzyniak
  • J. Karczewski
  • P. Kupracz
  • K. Grochowska
  • E. Coy
  • A. Mazikowski
  • J. Ryl
  • S. Katarzyna

  - Scientific Reports - Year 2020

  In the following article, we present a simple, two-step method of creating spaced, hollow nanopillars, from the titania nanotube arrays via pulsed laser-treatment. Due to the high ordering of the structure, the prepared material exhibits photonic properties, which has been shown to increase the overall photoefficiency. The optical and morphological changes in the titania nanotubes after pulsed laser-treatment with 532, 355, and...

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• Structural and catalytic properties of ceria layers doped with transition metals for SOFCs fueled by biogas

  Publication

  • B. Hołówko
  • P. Błaszczak
  • M. Chlipała
  • M. Gazda
  • S. Wang
  • P. Jasiński
  • B. Bochentyn

  - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Year 2020

  The aim of this paper was to investigate an influence of the nanocrystalline Ce0.8A0.2O2-δ (A = Mn, Fe, Co, Ni, Cu) materials on the direct internal reforming of biogas in SOFC. Structural analysis of fabricated compounds has been done. An in-situ analysis of a composition of outlet gases from operating SOFC was performed using FTIR spectroscopy with simultaneous electrical tests. It was found out, that type of dopant strongly...

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Year 2019

• NOWE MATERIAŁY ANODOWE DLA TLENKOWYCH OGNIW PALIWOWYCH (SOFCs) ZAPEWNIAJĄCE WYDAJNĄ PRACĘ W SYSTEMACH ZASILANYCH BIOGAZEM.

  Publication

  • P. Błaszczak

  - Year 2019

  Tlenkowe ogniwa paliwowe (z ang. Solid Oxide Fuel Cells, SOFCs) zasilane paliwami innymi niż czysty wodór podlegają procesom szybszego niszczenia i utraty zdolności do generowania prądu. Głównymi przyczynami takiego zachowania jest osadzanie się węgla na powierzchni anody oraz zatruwanie materiałów ceramicznych śladowymi ilościami siarki, fosforu lub chloru w paliwach węglowodorowych. W niniejszej pracy dokonano przeglądu przez...