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A mixed indium-iron lithium diphosphate, In(0.51)Fe(0.49)LiP(2)O(7).

ABSTRACT: The structure of In(0.51)Fe(0.49)LiP(2)O(7) consists of a three-dimensional network constructed from (In(III)/Fe(III))O(6) octa-hedra and P(2)O(7) groups. Each M(III)O(6) octa-hedron is linked to six PO(4) tetra-hedra belonging to five different P(2)O(7) groups and shares two corners with the same P(2)O(7) group so as to build infinite chains or rather parallel colums of [M(III)P(2)O(11)] running along the a axis. The linkage between these chains or columns defines hepta-gonal tunnels parallel to [100] in which the Li(+) ions are located in off-centred positions. The In(0.51)Fe(0.49)LiP(2)O(7) compound can be regarded as one composition of the continuous solid solution between LiFeP(2)O(7) and LiInP(2)O(7) whose structure is isotypic with the A(I)FeP(2)O(7) (A(I) = Na, K, Rb, Cs and Ag) diphosphate family.

SUBMITTER: Zouihri H

PROVIDER: S-EPMC3099915 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Silver indium diphosphate, AgInP(2)O(7).

Project description:Polycrystalline material of the title compound, AgInP(2)O(7), was synthesized by traditional high-temperature solid-state methods and single crystals were grown from the melt of a mixture of AgInP(2)O(7) and B(2)O(3) as flux in a platinium crucible. The structure consists of InO(6) octa-hedra, which are corner-shared to PO(4) tetra-hedra into a three-dimensional network with hexa-gonal channels running parallel to the c axis. The silver cation, located in the channel, is bonded to seven O atoms of the [InP(2)O(7)] framework with Ag-O distances ranging from 2.370?(2) to 3.015?(2)?Å. The P(2)O(7) diphosphate anion is characterized by a P-O-P angle of 137.27?(9) and a nearly eclipsed conformation. AgInP(2)O(7) is isotypic with the M(I)FeP(2)O(7) (M(I) = Na, K, Rb, Cs and Ag) diphosphate family.

| S-EPMC3050398 | biostudies-literature

Growth of lithium-indium dendrites in all-solid-state lithium-based batteries with sulfide electrolytes.

Project description:All-solid-state lithium-based batteries with inorganic solid electrolytes are considered a viable option for electrochemical energy storage applications. However, the application of lithium metal is hindered by issues associated with the growth of mossy and dendritic Li morphologies upon prolonged cell cycling and undesired reactions at the electrode/solid electrolyte interface. In this context, alloy materials such as lithium-indium (Li-In) alloys are widely used at the laboratory scale because of their (electro)chemical stability, although no in-depth investigations on their morphological stability have been reported yet. In this work, we report the growth of Li-In dendritic structures when the alloy material is used in combination with a Li6PS5Cl solid electrolyte and Li(Ni0.6Co0.2Mn0.2)O2 positive electrode active material and cycled at high currents (e.g., 3.8 mA cm-2) and high cathode loading (e.g., 4 mAh cm-2). Via ex situ measurements and simulations, we demonstrate that the irregular growth of Li-In dendrites leads to cell short circuits after room-temperature long-term cycling. Furthermore, the difference between Li and Li-In dendrites is investigated and discussed to demonstrate the distinct type of dendrite morphology.

| S-EPMC8630065 | biostudies-literature

Iron (Fe) deficiency in Citrus

Project description:Transcription profiling of citrus rootstock Poncirus trifoliata (L.) Raf. Keywords: Abiotic stress (Iron chlorosis)

2009-12-01 | GSE17255 | GEO

Diytterbium(II) lithium indium(III) digermanide, Yb(2)LiInGe(2).

Project description:The title compound, Yb(2)LiInGe(2), a new ordered quaternary inter-metallic phase, crystallizes with the ortho-rhom-bic Ca(2)LiInGe(2) type (Pearson code oP24). The crystal structure contains six crystallographically unique sites in the asymmetric unit, all in special positions with site symmetry .m.. The structure is complex and based on [InGe(4)] tetra-hedra, which share corners in two directions, forming layers parallel to (001). Yb atoms fill square-pyramidal (Yb1) and octa-hedral (Yb2) inter-stices between the [InGe(4/2)] layers, while the small Li(+) atoms fill tetra-hedral sites.

| S-EPMC2979241 | biostudies-literature

Crystal structure of K0.75[Fe(II) 3.75Fe(III) 1.25(HPO3)6]·0.5H2O, an open-framework iron phosphite with mixed-valent Fe(II)/Fe(III) ions.

Project description:Single crystals of the title compound, potassium hexa-phosphito-penta-ferrate(II,III) hemihydrate, K0.75[Fe(II) 3.75Fe(III) 1.25(HPO3)6]·0.5H2O, were grown under mild hydro-thermal conditions. The crystal structure is isotypic with Li1.43[Fe(II) 4.43Fe(III) 0.57(HPO3)6]·1.5H2O and (NH4)2[Fe(II) 5(HPO3)6] and exhibits a [Fe(II) 3.75Fe(III) 1.25(HPO3)6](0.75-) open framework with disordered K(+) (occupancy 3/4) as counter-cations. The anionic framework is based on (001) sheets of two [FeO6] octa-hedra (one with point group symmetry 3.. and one with point group symmetry .2.) linked along [001] through [HPO3](2-) oxoanions. Each sheet is constructed from 12-membered rings of edge-sharing [FeO6] octa-hedra, giving rise to channels with a radius of ca 3.1?Å where the K(+) cations and likewise disordered water mol-ecules (occupancy 1/4) are located. O?O contacts between the water mol-ecule and framework O atoms of 2.864?(5)?Å indicate hydrogen-bonding inter-actions of medium strength. The infrared spectrum of the compound shows vibrational bands typical for phosphite and water groups. The Mössbauer spectrum is in accordance with the presence of Fe(II) and Fe(III) ions.

| S-EPMC4704752 | biostudies-literature

Iron deficiency (-Fe) effect: Arabidopsis roots

Project description:This SuperSeries is composed of the SubSeries listed below.

2008-04-24 | GSE10576 | GEO

Iron (Fe) deficiency in Citrus

Project description:Transcription profiling of citrus rootstock Poncirus trifoliata (L.) Raf. Keywords: Abiotic stress (Iron chlorosis) Total RNA from four replicates for each sample category (Poncirus trifoliata (L.) Raf watered for 60 days with 18 uM Fe-EDDHA or without Fe-EDDHA) were generated and compared.

2010-05-19 | E-GEOD-17255 | biostudies-arrayexpress

Ferromagnetic FeSe2 from a mixed sulphur-selenium complex of iron [Fe{(SePPh2NPPh2S)2N}3] through pyrolysis.

Project description:Iron (III) thioselenoimidodiphosphinate complex, Fe{(SePPh2NPPh2S)2N}3], was synthesized from the ligand [Ph2P(S)HNP(Se)Ph2], and the complex employed as the combined source of the targeted elements (Fe and Se) to generate orthorhombic FeSe2. This was achieved by thermolysis using a quartz glass tube, under reduced pressure at 500 °C during 1 h 30 min. The crystalline product was revealed by X-ray diffraction (XRD), while the morphology consisted of polygonal crystallites according to the scanning electron microscopy (SEM) studies. Superconducting quantum interference device (SQUID) measurements on the material confirmed its ferromagnetism as observed from the magnetization curve, indicated by the field-cooled and zero field-cooled conditions under a magnetic field of 100 Oe. This ferromagnetic material, FeSe2 finds useful application in producing electrical semiconductors.

| S-EPMC7182788 | biostudies-literature

Structural Peculiarities and Thermoelectric Study of Iron Indium Thiospinel.

Project description:The homogeneity range of ternary iron indium thiospinel at 873 K was investigated. A detailed study was focused on two distinct series (y=z): 1) a previously reported charge-balanced (In0.67+0.33y □0.33-0.33y )tetr [In2-z Fez ]oct S4 (A1-series; □ stands for vacancy; the abbreviations "tetr" and "oct" indicate atoms occupying tetrahedral 8a and octahedral 16d sites, respectively) and 2) a new charge-unbalanced (In0.67+y □0.33-y )tetr [In2-z Fez ]oct S4 (A2-series). Fe atoms were confirmed to exclusively occupy an octahedral position in both series. An unusual reduction of the unit cell parameter with increasing Fe content is explained by differences in the ionic radii between Fe and In, as well as by an additional electrostatic attraction originating from charge imbalance (latter only in A2-series). The studied compound is an n-type semiconductor, and its charge carrier concentration increases or decreases for larger Fe content within the A1- and A2-series, respectively. The thermal conductivity κtot is significantly reduced upon increasing vacancy concentration, whereas the change of power factor is insufficient to drastically improve the thermoelectric figure of merit.

| S-EPMC7216953 | biostudies-literature

Fe-based hybrid electrocatalysts for nonaqueous lithium-oxygen batteries.

Project description:Lithium-oxygen batteries promise high energy densities, but are confronted with challenges, such as high overpotentials and sudden death during discharge-charge cycling, because the oxygen electrode is covered with the insulating discharge product, Li2O2. Here, we synthesized low-cost Fe-based nanocomposites via an electrical wire pulse process, as a hybrid electrocatalyst for the oxygen electrode of Li-O2 batteries. Fe3O4-Fe nanohybrids-containing electrodes exhibited a high discharge capacity (13,890?mA?h gc-1 at a current density of 500?mA gc-1), long cycle stability (100 cycles at a current rate of 500?mA gc-1 and fixed capacity regime of 1,000?mA?h gc-1), and low overpotential (1.39?V at 40 cycles). This superior performance resulted from the good electrical conductivity of the Fe metal nanoparticles during discharge-charge cycling, which could enhance the oxygen reduction reaction and oxygen evolution reaction activities. We have demonstrated the increased electrical conductivity of the Fe3O4-Fe nanohybrids using electrochemical impedance spectroscopy.

| S-EPMC5573321 | biostudies-literature

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