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FältnamnIndikatorerMetadata
00004910naa a2200445 4500
001oai:DiVA.org:uu-508981
003SwePub
008230811s2023 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5089812 URI
0247 a https://doi.org/10.1007/s10853-023-09025-x2 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Boras, Dominiku Chair of Chemical Technology of Materials Synthesis, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germany4 aut
2451 0a Determining internal porosity in Prussian blue analogue cathode materials using positron annihilation lifetime spectroscopy
264 1b Springer Nature,c 2023
338 a electronic2 rdacarrier
500 a De två första författarna delar förstaförfattarskapet
520 a Prussian blue analogues (PBAs), AxM[M’(CN)6]1–y·zH2O, are a highly functional class of materials with use in a broad range of applications, such as energy storage, due to their porous structure and tunable composition. The porosity is particularly important for the properties and is deeply coupled to the cation, water, and [M’(CN)6]n– vacancy content. Determining internal porosity is especially challenging because the three compositional parameters are dependent on each other. In this work, we apply a new method, positron annihilation lifetime spectroscopy (PALS), which can be employed for the characterization of defects and structural changes in crystalline materials. Four samples were prepared to evaluate the method’s ability to detect changes in internal porosity as a function of the cation, water, and [M’(CN)6]n– vacancy content. Three of the samples have identical [M’(CN)6]n– vacancy content and gradually decreasing sodium and water content, while one sample has no sodium and 25% [M’(CN)6]n– vacancies. The samples were thoroughly characterized using inductively coupled plasma-optical emission spectroscopy (ICP-OES), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Mössbauer spectroscopy as well as applying the PALS method. Mössbauer spectroscopy, XRD, and TGA analysis revealed the sample compositions Na1.8(2)Fe2+0.64(6)Fe2.6+0.36(10)[Fe2+(CN)6]·2.09(2)H2O, Na1.1(2)Fe2+0.24(6)Fe2.8+0.76(6)[Fe2.3+(CN)6]·1.57(1)H2O, Fe[Fe(CN)6]·0.807(9)H2O, and Fe[Fe(CN)6]0.75·1.5H2O, confirming the absence of vacancies in the three main samples. It was shown that the final composition of PBAs could only be unambiguously confirmed through the combination of ICP, XRD, TGA, and Mössbauer spectroscopy. Two positron lifetimes of 205 and 405 ps were observed with the 205 ps lifetime being independent of the sodium, water, and/or [Fe(CN)6]n– vacancy content, while the lifetime around 405 ps changes with varying sodium and water content. However, the origin and nature of the 405 ps lifetime yet remains unclear. The method shows promise for characterizing changes in the internal porosity in PBAs as a function of the composition and further development work needs to be carried out to ensure the applicability to PBAs generally.
650 7a NATURVETENSKAPx Kemix Materialkemi0 (SwePub)104032 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Materials Chemistry0 (SwePub)104032 hsv//eng
653 a Prussian blue analogues
653 a positron annihilation lifetime spectroscopy
653 a Mössbauer spectroscopy
653 a sodium-ion batteries
7001 a Nielsen, Ida,d 1996-u Uppsala universitet,Strukturkemi4 aut0 (Swepub:uu)idani183
7001 a Buckel, Alexanderu Altris AB, Kungsgatan 70b, 753 18, Uppsala, Sweden4 aut
7001 a Ericsson, Toreu Uppsala universitet,Institutionen för kemi - Ångström4 aut0 (Swepub:uu)toreeric
7001 a Häggström, Lennartu Uppsala universitet,Institutionen för kemi - Ångström4 aut0 (Swepub:uu)lennhagg
7001 a Younesi, Rezau Uppsala universitet,Strukturkemi4 aut0 (Swepub:uu)rezyo975
7001 a Stabb, Torstenu Chair of Chemical Technology of Materials Synthesis, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germany4 aut
7001 a Brant, William R.u Uppsala universitet,Strukturkemi4 aut0 (Swepub:uu)wilbr976
7102 a Chair of Chemical Technology of Materials Synthesis, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germanyb Strukturkemi4 org
7730 t Journal of Materials Scienced : Springer Natureg 58:42, s. 16344-16356q 58:42<16344-16356x 0022-2461x 1573-4803
8564 u https://doi.org/10.1007/s10853-023-09025-xy Fulltext
8564 u https://uu.diva-portal.org/smash/get/diva2:1787285/FULLTEXT02.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-508981
8564 8u https://doi.org/10.1007/s10853-023-09025-x

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