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Title: Improving ionic conductivity by Mg-doping of A 2 SnO 3 (A = Li + , Na + )

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
FOREIGN
OSTI Identifier:
1368320
Resource Type:
Journal Article
Resource Relation:
Journal Name: Solid State Ionics; Journal Volume: 308
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Blazquez-Alcover, I., Rousse, G., Alves Dalla Corte, D., Badot, J. C., Grimaud, A., Rozier, P., and Tarascon, J. M. Improving ionic conductivity by Mg-doping of A 2 SnO 3 (A = Li + , Na + ). United States: N. p., 2017. Web. doi:10.1016/j.ssi.2017.05.013.
Blazquez-Alcover, I., Rousse, G., Alves Dalla Corte, D., Badot, J. C., Grimaud, A., Rozier, P., & Tarascon, J. M. Improving ionic conductivity by Mg-doping of A 2 SnO 3 (A = Li + , Na + ). United States. doi:10.1016/j.ssi.2017.05.013.
Blazquez-Alcover, I., Rousse, G., Alves Dalla Corte, D., Badot, J. C., Grimaud, A., Rozier, P., and Tarascon, J. M. 2017. "Improving ionic conductivity by Mg-doping of A 2 SnO 3 (A = Li + , Na + )". United States. doi:10.1016/j.ssi.2017.05.013.
@article{osti_1368320,
title = {Improving ionic conductivity by Mg-doping of A 2 SnO 3 (A = Li + , Na + )},
author = {Blazquez-Alcover, I. and Rousse, G. and Alves Dalla Corte, D. and Badot, J. C. and Grimaud, A. and Rozier, P. and Tarascon, J. M.},
abstractNote = {},
doi = {10.1016/j.ssi.2017.05.013},
journal = {Solid State Ionics},
number = ,
volume = 308,
place = {United States},
year = 2017,
month =
}
  • Many phosphorus oxynitride electrolytes incorporate a remarkable amount of lithium and have been considered for possible application in rechargeable thin film lithium batteries. Electronic and structural influences on ionic conductivity in the crystalline lithium phosphorus oxynitrides {gamma}-Li{sub 3}PO{sub 4} and Li{sub 2.88}PO{sub 3.73}N{sub 0.14} are analyzed, using approximate molecular orbital calculations. Starting from {gamma}-Li{sub 3}PO{sub 4}, the authors construct a model compound for the new nonstoichiometric oxynitride, Li{sub 11}P{sub 4}O{sub 14}N, in which an oxygen in a bridge position (O{sub II}) in the parent {gamma}-Li{sub 3}PO{sub 4} structure is replaced by a nitrogen; in addition, oxygen and lithium defects aremore » introduced in a systematic way. The authors examine the distortion of the lattice in response to substitution and defect formation. To study the P-N-P units observed in chromatographic studies of the oxynitride, density functional calculations are also carried out on small cluster models [(HO){sub 3}PNP(HO){sub 3}]{sup 1+}, [(HO){sub 3}POP(HO){sub 3}]{sup 2+}, [O(P{sub 3}(OH){sub 3})]{sup 4+}, and [N(P{sub 3}(OH){sub 3})]{sup 3+}. To produce a high mobility of lithium species in the lattice, across tetrahedral faces rather than edges, their calculations suggest that a high concentration of defects is needed.« less
  • The results of the synthesis and characterization of the optimally doped La{sub 1.85}Ca{sub 0.15}(Cu{sub 1−x}Ni{sub x})O{sub 4-δ} solid solution with x = 0, 0.1, 0.2 and 0.3 are reported. The versatility of these La{sub 1.85}Ca{sub 0.15}(Cu{sub 1−x}Ni{sub x})O{sub 4−δ} materials is explained on the basis of structural features and the ability to accommodate oxygen nonstoichiometry. According to powder X-ray and neutron diffraction data, La{sub 1.85}Ca{sub 0.15}(Cu{sub 1−x}Ni{sub x})O{sub 4−δ} adopts the tetragonal structure with oxygen vacancies occurring preferentially at the O{sub ap} sites within the {(La/Ca)O} layers of the perovskite blocks and the oxygen deviation from stoichiometry δ was foundmore » to be δ=0.0905(6). The bulk conductivity indicated an Arrhenius-type thermally activated process and oxygen vacancies are the possible ionic charge carriers at T=270 °C. An increase of the conductivity was detected when Ni was introduced. With nickel ratio variation, a strong correlation was observed between the Cu(Ni)-O{sub ap} apical bond length variation and the conductivity variation through controlling the O{sup 2−} ion migration. - Highlights: • We report the synthesis and structure of the La{sub 1.85}Ca{sub 0.15}(Cu{sub 1−x}Ni{sub x})O{sub 4−δ} (0≤x≤0.3; δ=0.0905) compounds. • La{sub 1.85}Ca{sub 0.15}(Cu{sub 1−x}Ni{sub x})O{sub 4−δ} (x=0.0, 0.2, 0.3) doped with Ni{sup 2+} have a higher conductivity than undoped La{sub 1.85}Ca{sub 0.15}CuO{sub 4−δ}. • At T=270 °C, sample x=0.3 has the highest conductivity (0.2915 sm{sup −1}).« less