TY - JOUR
T1 - Synthesis, crystal structure and possible proton conduction of Fe(H2PO4)2F
AU - Ma, Zihan
AU - Lander, Laura
AU - Nishimura, Shin ichi
AU - Fukakusa, Chihoko
AU - Yamada, Teppei
AU - Okubo, Masashi
AU - Yamada, Atsuo
N1 - Funding Information:
This work was financially supported by the ‘Elemental Strategy Initiative for Catalysis and Batteries (ESICB)’. This work was financially supported also by the Ministry of Education, Culture, Sports, Science and Technology ( MEXT ), Japan, a Grant-in-Aid for Specially Promoted Research ( 15H05701 ). Z. M. acknowledges the International Multidisciplinary Engineering graduate program for her scholarship. L.L. acknowledges the Japan Society for the Promotion of Science for her fellowship. The single crystal diffraction measurement was conducted at Advanced Characterization Nanotechnology Platform of the University of Tokyo, supported by “Nanotechnology Platform” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. S.N. would like to thank Dr. Kohei Okitsu for the support of single crystal diffraction experiment.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - A new iron fluorophosphate compound, Fe(H2PO4)2F, was synthesized by a solvent-less method at low temperatures. Its structure was determined from single crystal X-ray diffraction. Fe(H2PO4)2F was found to have a 3-dimensional structure built up by parallel chains of corner-sharing octahedra. This novel compound crystallizes in a tetragonal I4/mcm space group with the following lattice parameters: a = b = 9.01870(10) Å and c = 7.8058(2) Å. Further characterization of the material was conducted by TGA and Mössbauer spectroscopy. Proton conductivity measurements under dry condition revealed activation energies of Ea = 0.43 eV (along c-axis) and Ea = 0.41 eV (along a-axis) with corresponding room-temperature conductivities 2.6 × 10−7 S cm−1 and 5.8 × 10−8 S cm−1.
AB - A new iron fluorophosphate compound, Fe(H2PO4)2F, was synthesized by a solvent-less method at low temperatures. Its structure was determined from single crystal X-ray diffraction. Fe(H2PO4)2F was found to have a 3-dimensional structure built up by parallel chains of corner-sharing octahedra. This novel compound crystallizes in a tetragonal I4/mcm space group with the following lattice parameters: a = b = 9.01870(10) Å and c = 7.8058(2) Å. Further characterization of the material was conducted by TGA and Mössbauer spectroscopy. Proton conductivity measurements under dry condition revealed activation energies of Ea = 0.43 eV (along c-axis) and Ea = 0.41 eV (along a-axis) with corresponding room-temperature conductivities 2.6 × 10−7 S cm−1 and 5.8 × 10−8 S cm−1.
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U2 - 10.1016/j.ssi.2019.05.019
DO - 10.1016/j.ssi.2019.05.019
M3 - Article
AN - SCOPUS:85066424395
SN - 0167-2738
VL - 338
SP - 134
EP - 137
JO - Solid State Ionics
JF - Solid State Ionics
ER -