Sökning: WFRF:(Wang Xiaodi 1981 ) > SDC/Na2CO3 nanocomp...
Fältnamn | Indikatorer | Metadata |
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000 | 03655naa a2200421 4500 | |
001 | oai:DiVA.org:kth-95658 | |
003 | SwePub | |
008 | 120528s2012 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-956582 URI |
024 | 7 | a https://doi.org/10.1016/j.ijhydene.2011.10.0612 DOI |
040 | a (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Wang, Xiaodi,d 1981-u KTH,Funktionella material, FNM,Functional Materials Division4 aut0 (Swepub:kth)u1d9h33q |
245 | 1 0 | a SDC/Na2CO3 nanocomposite :b New freeze drying based synthesis and application as electrolyte in low-temperature solid oxide fuel cells |
264 | 1 | b Elsevier BV,c 2012 |
338 | a print2 rdacarrier | |
500 | a QC 20120529 | |
520 | a A key issue to develop low-temperature solid oxide fuel cells (LTSOFCs) is to develop new electrolyte materials with enhanced ionic conductivity. Recently, SDC/Na2CO3 nanocomposite, as a proton and oxide co-ion conductor, has been developed as promising electrolyte candidates for LTSOFCs, where Na2CO3 as the secondary phase performs several crucial functions. However, it's difficult to control the homogeneity of Na 2CO3 phase in the composite by the current methods for composite fabrication. In this study, we report a new freeze drying technique to fabricate SDC/Na2CO3 nanocomposites with different content of Na2CO3. Structural and morphological study confirmed that the homogeneity of both SDC and Na2CO3 phases in the nanocomposite is well controlled by the freeze drying technique. The effect of Na2CO3 content on proton and oxygen ion conductivities of SDC-carbonate samples were investigated by the four-probe d.c. measurement. Proton conductivity transformation around 350 °C has been observed for all the SDC/Na2CO3 nanocomposites due to the glass transition of amorphous Na2CO3 phase, and the proton conductivity is dependent on Na2CO3 content. While oxygen ion conductivity deceases with the increasing of Na2CO3 volume fraction in the nanocomposite. Finally, SOFCs were fabricated using SDC/Na2CO3 nanocomposite samples and tested for electrochemical performances. The excellent performance of SOFCs using SDC/Na2CO3 nanocomposite electrolyte verifies that nanocomposite approach is an effective way to fabricate electrolyte with enhanced ionic conductivity for LTSOFCs. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Nanoteknik0 (SwePub)2102 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Nano-technology0 (SwePub)2102 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemix Materialkemi0 (SwePub)104032 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Materials Chemistry0 (SwePub)104032 hsv//eng |
653 | a Nanocomposite | |
653 | a Freeze drying | |
653 | a Proton conduction | |
653 | a Oxygen ion conduction | |
653 | a Solid oxide fuel cells (SOFCs) | |
700 | 1 | a Ma, Ying,d 1983-u KTH,Funktionella material, FNM,Functional Materials Division4 aut0 (Swepub:kth)u15gv6rg |
700 | 1 | a Li, Shanghuau KTH,Funktionella material, FNM,Functional Materials Division4 aut0 (Swepub:kth)u1jdsxsm |
700 | 1 | a Zhu, Binu KTH,Energiteknik4 aut0 (Swepub:kth)u1ybbo7e |
700 | 1 | a Muhammed, Mamounu KTH,Funktionella material, FNM4 aut0 (Swepub:kth)u1m5r8td |
710 | 2 | a KTHb Funktionella material, FNM4 org |
773 | 0 | t International journal of hydrogen energyd : Elsevier BVg 37:24, s. 19380-19387q 37:24<19380-19387x 0360-3199x 1879-3487 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95658 |
856 | 4 8 | u https://doi.org/10.1016/j.ijhydene.2011.10.061 |
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