PMID- 31968670
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200930
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 12
IP  - 1
DP  - 2020 Jan 20
TI  - Geopolymer/CeO(2) as Solid Electrolyte For IT-SOFC.
LID - 10.3390/polym12010248 [doi]
LID - 248
AB  - As a material for application in the life sciences, a new composite material, 
      geopolymer/CeO(2) (GP_CeO(2)), was synthesized as a potential low-cost solid 
      electrolyte for application in solid oxide fuel cells operating in intermediate 
      temperature (IT-SOFC). The new materials were obtained from alkali-activated 
      metakaolin (calcined clay) in the presence of CeO(2) powders (x = 10%). Besides 
      the commercial CeO(2) powder, as a source of ceria, two differently synthesized 
      CeO(2) powders also were used: CeO(2) synthesized by modified glycine nitrate 
      procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The 
      structural, morphological, and electrical properties of pure and GP_CeO(2)-type 
      samples were investigated by X-ray powder diffraction (XRPD), Fourier transform 
      infrared (FTIR), BET, differential thermal and thermogravimetric analysis 
      (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer 
      (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser 
      desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the 
      formation of solid phase CeO(2). The BET, DTA/TGA, FE-SEM, and EDS results 
      indicated that particles of CeO(2) were stabile interconnected and form a 
      continuous conductive path, which was confirmed by the EIS method. The highest 
      conductivity of 1.86 x 10(-2) Omega(-1) cm(-1) was obtained for the sample 
      GP_CeO(2)_MGNP at 700  degrees C. The corresponding value of activation energy for 
      conductivity was 0.26 eV in the temperature range 500-700  degrees C.
FAU - Gulicovski, Jelena
AU  - Gulicovski J
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
FAU - Nenadovic, Snezana
AU  - Nenadovic S
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
FAU - Kljajevic, Ljiljana
AU  - Kljajevic L
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
FAU - Mirkovic, Miljana
AU  - Mirkovic M
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
FAU - Nisavic, Marija
AU  - Nisavic M
AD  - Laboratory of Atomics Physics, Institute of Nuclear Sciences Vinca, University of 
      Belgrade, 11000 Belgrade, Serbia.
FAU - Kragovic, Milan
AU  - Kragovic M
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
FAU - Stojmenovic, Marija
AU  - Stojmenovic M
AD  - Laboratory for Materials Sciences, Institute of Nuclear Sciences Vinca, 
      University of Belgrade, 11000 Belgrade, Serbia.
LA  - eng
PT  - Journal Article
DEP - 20200120
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC7023519
OTO - NOTNLM
OT  - electrical conductivity
OT  - fuel cells.
OT  - geopolymers/ceria
OT  - polymer composites
COIS- The authors do not have any conflicts of interest.
EDAT- 2020/01/24 06:00
MHDA- 2020/01/24 06:01
PMCR- 2020/01/20
CRDT- 2020/01/24 06:00
PHST- 2019/12/26 00:00 [received]
PHST- 2020/01/18 00:00 [revised]
PHST- 2020/01/19 00:00 [accepted]
PHST- 2020/01/24 06:00 [entrez]
PHST- 2020/01/24 06:00 [pubmed]
PHST- 2020/01/24 06:01 [medline]
PHST- 2020/01/20 00:00 [pmc-release]
AID - polym12010248 [pii]
AID - polymers-12-00248 [pii]
AID - 10.3390/polym12010248 [doi]
PST - epublish
SO  - Polymers (Basel). 2020 Jan 20;12(1):248. doi: 10.3390/polym12010248.