Centralne Laboratorium Akumulatorow i Ogniw

Poznań, Poland

Centralne Laboratorium Akumulatorow i Ogniw

Poznań, Poland
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Sierczynska A.,Centralne Laboratorium Akumulatorow i Ogniw | Lota K.,Centralne Laboratorium Akumulatorow i Ogniw | Manczak R.,Centralne Laboratorium Akumulatorow i Ogniw | Acznik I.,Centralne Laboratorium Akumulatorow i Ogniw | And 2 more authors.
Przemysl Chemiczny | Year: 2017

An alloy of stoichiometric formula MmNi355AI0.3Mn0.4Co0.7S, where Mm was a metal mixt. (29.7% La, 49.9% Ce, 15.4% Nd and 5.0% Pr by mass) was made by arc melting and milled with C nanotubes or graphite for different mass proportions of ingredients to produce electrode materials. The addn. of 2.5% C resulted in increasing the electrochem. efficiency of the tested electrodes.


Majchrzycki W.,Centralne Laboratorium Akumulatorow i Ogniw | Jankowska E.,Centralne Laboratorium Akumulatorow i Ogniw | Lota G.,Poznan University of Technology | Pernak J.,Poznan University of Technology | And 2 more authors.
Przemysl Chemiczny | Year: 2017

Pofydialfyldimethylammonium, hexadecyttrimethylammonium and dimethylhexadecylammonium (I) bisulfates were synthesized and added to positive electrode materials used in Pb-acid battery cells to det. the effect of ionic liqs. on the operational characteristics of the cells (discharge capacity). Only the addn. of I bisulfate resulted in an increase in the cell capacity.


Lota K.,Centralne Laboratorium Akumulatorow i Ogniw | Sierczynska A.,Centralne Laboratorium Akumulatorow i Ogniw | Acznik I.,Centralne Laboratorium Akumulatorow i Ogniw | Kopczyk M.,Centralne Laboratorium Akumulatorow i Ogniw | Lota G.,Poznan University of Technology
Przemysl Chemiczny | Year: 2017

A composite made of MnO2with 10% addn. of multi-walled C nanotubes was used as a positive capacitor electrode, while activated C as a negative one. The capacitance properties of the capacitors with 2, 4 and 6 electrodes were tested. The increasing no. of electrodes in the capacitor resulted in an increase of capacitance and the ability to charge it with higher currents.


Osinska-Broniarz M.,Centralne Laboratorium Akumulatorow i Ogniw | Martyla A.,Centralne Laboratorium Akumulatorow i Ogniw | Sierczynska A.,Centralne Laboratorium Akumulatorow i Ogniw | Marciniec B.,University Adama Mickiewicza | Przekop R.,University Adama Mickiewicza
Przemysl Chemiczny | Year: 2017

A cage polyhedral oligomeric silsesquioxane (POSS) was functionallzed In reaction with limonene or pinene and used as an additive to poly(vinylidene fluoride)/hexafluoropropylene copolymer matrix and studied for physicochem. and electrochem. parameters as hybrid gel electrolytes to Li-polymer batteries. The hybrid gel electrolytes showed an improved solvent uptake and significantly higher cond. as compared to membranes without POSS.


Martyla A.,Centralne Laboratorium Akumulatorow i Ogniw | Osinska-Broniarz M.,Centralne Laboratorium Akumulatorow i Ogniw | Kopczyk M.,Centralne Laboratorium Akumulatorow i Ogniw | Sztorch B.,Adam Mickiewicz University | And 2 more authors.
Przemysl Chemiczny | Year: 2017

B-Si glass, sandstone and granite surface were modified by coating with com. hydrophobic formulations and their mixts. with silicone oil and organofunctional silanes and studied by measuring their wetting angles. A substantial increase in the sandstone and granite hydrophobicity was achieved. The glass surface showed low hydrophobizability.


Walkowiak M.,Centralne Laboratorium Akumulatorow i Ogniw | Polrolniczak P.,Centralne Laboratorium Akumulatorow i Ogniw | Wasinski K.,Centralne Laboratorium Akumulatorow i Ogniw | Przybylczak M.,Centralne Laboratorium Akumulatorow i Ogniw
Przemysl Chemiczny | Year: 2017

TiO2 SnO2 and Fe3O4nanoparticles were deposited on the graphene oxide flakes, mixed with C nanotubes and poly(vinylidene fluoride)/hexafluoropropylene copolymer and studied for reversible and irreversible capacity and charging efficiency in Li-ion battery. The Fe and Sn oxide-based composites exhibited the highest initial capacities, whereas the TiO2-based composite showed the best cyclic stability, in spite of a relatively low capacity.


Polrolniczak P.,Centralne Laboratorium Akumulatorow i Ogniw | Wasinski K.,Centralne Laboratorium Akumulatorow i Ogniw | Przybylczak M.,Centralne Laboratorium Akumulatorow i Ogniw | Walkowiak M.,Centralne Laboratorium Akumulatorow i Ogniw
Przemysl Chemiczny | Year: 2017

C xerogels were synthesized by polycondensation and carbonization of org. precursors (resorcinol, formaldehyde) and used for prepn. of a composite S cathode. The cathode showed a sp. discharge capacity 650 mAh/g at 0.05 C current rate, which remained remarkably stable over subsequent 30 charge/discharge cycles. Excellent reversibility and cyclic stability of this composite cathode was explained by a porous structure and developed surface area, allowing for the retention of the intermediate U polysulfides within the C framework, without any excessive dissoln. in the bulk of electrolyte.


Wasinski K.,Centralne Laboratorium Akumulatorow i Ogniw | Przybylczak M.,Centralne Laboratorium Akumulatorow i Ogniw | Polrolniczak P.,Centralne Laboratorium Akumulatorow i Ogniw | Walkowiak M.,Centralne Laboratorium Akumulatorow i Ogniw
Przemysl Chemiczny | Year: 2017

Na0.4MnO2 was synthesized and used together with C nanotubes and acetylene black as cathode material in a Na-ion half-cell. The addn. resulted in increasing the cell capacity charging and discharging current rates.


Blazejczak M.,Centralne Laboratorium Akumulatorow i Ogniw | Styczynski S.,Centralne Laboratorium Akumulatorow i Ogniw | Kopciuch K.,Centralne Laboratorium Akumulatorow i Ogniw | Majchrzycki W.,Centralne Laboratorium Akumulatorow i Ogniw | Jankowska E.,Centralne Laboratorium Akumulatorow i Ogniw
Przemysl Chemiczny | Year: 2017

An active layer of the air electrode in Zn-air battery was prepd. by mixing activated C, graphite and La0,8JSr0,2 CoO3 perovskite with EtOH or i-PrOH and polytetrafluoroeihylene emulsion and forming disks (diam. 26 mm, thickness 2 mm) by rolling. The elec. tests of the electrodes showed an improvement in cell voltage and sustainability in charge/discharge cycles.


NaBH4 was converted to H2 in reaction with H2O in presence of catalysts. Co(NO3)2 was the most efficient catalyst of the reaction.

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