Phase composition, thermal and transport properties of the system based on the mono- and dihydrogen phosphates of rubidium

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Phase composition, thermal and transport properties of the system based on the mono- and dihydrogen phosphates of rubidium. / Gaydamaka, Anna A.; Ponomareva, Valentina G.; Bagryantseva, Irina N.

в: Solid State Ionics, Том 329, 01.01.2019, стр. 124-130.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{f9c5e9e90ee14bbbaecba71a0e9b686a,

title = "Phase composition, thermal and transport properties of the system based on the mono- and dihydrogen phosphates of rubidium",

abstract = "Phase composition and phase transitions, spectral characteristics, thermal and transport properties of the (1-x)RbH2PO4 – xRb2HPO4 · yH2O system at the wide range of х = 0–1 were investigated. No solid solutions were observed at the system. A monophasic region at х = 0.25 with the compound Rb5H7(PO4)4 was found. The thermodynamic and transport properties of Rb5H7(PO4)4 were studied in detail. The other compositions correspond to diphasic mixtures of two salts: RbH2PO4 and Rb5H7(PO4)4 (х = 0–0.2), or Rb2HPO4·yH2O and Rb5H7(PO4)4 (at х higher 0.25). The sharp increase of proton conductivity up to 3·10−2 S/cm under highly humidified conditions was found for х = 0.1–0.25 at temperatures >240 °С can be associated with the superionic phase transitions of RbH2PO4 and Rb5H7(PO4)4. A weak composite effect with a slight increase of conductivity (about one order of magnitude) at low temperatures compared to those for the pure salts RbH2PO4 and Rb2HPO4·2H2O was shown for all samples.",

keywords = "A60, ac-impedance spectroscopy, Dihydrophosphate of rubidium, Hydrophosphate of rubidium dihydrate, IR-spectroscopy, Proton conductivity, PROTON CONDUCTIVITY, HIGH-TEMPERATURE, CSH2PO4, SUPERPROTONIC CONDUCTIVITY, DEHYDRATION BEHAVIOR, RBH2PO4, BONDS, TRANSITIONS",

author = "Gaydamaka, {Anna A.} and Ponomareva, {Valentina G.} and Bagryantseva, {Irina N.}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = jan,

day = "1",

doi = "10.1016/j.ssi.2018.12.005",

language = "English",

volume = "329",

pages = "124--130",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Phase composition, thermal and transport properties of the system based on the mono- and dihydrogen phosphates of rubidium

AU - Gaydamaka, Anna A.

AU - Ponomareva, Valentina G.

AU - Bagryantseva, Irina N.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Phase composition and phase transitions, spectral characteristics, thermal and transport properties of the (1-x)RbH2PO4 – xRb2HPO4 · yH2O system at the wide range of х = 0–1 were investigated. No solid solutions were observed at the system. A monophasic region at х = 0.25 with the compound Rb5H7(PO4)4 was found. The thermodynamic and transport properties of Rb5H7(PO4)4 were studied in detail. The other compositions correspond to diphasic mixtures of two salts: RbH2PO4 and Rb5H7(PO4)4 (х = 0–0.2), or Rb2HPO4·yH2O and Rb5H7(PO4)4 (at х higher 0.25). The sharp increase of proton conductivity up to 3·10−2 S/cm under highly humidified conditions was found for х = 0.1–0.25 at temperatures >240 °С can be associated with the superionic phase transitions of RbH2PO4 and Rb5H7(PO4)4. A weak composite effect with a slight increase of conductivity (about one order of magnitude) at low temperatures compared to those for the pure salts RbH2PO4 and Rb2HPO4·2H2O was shown for all samples.

AB - Phase composition and phase transitions, spectral characteristics, thermal and transport properties of the (1-x)RbH2PO4 – xRb2HPO4 · yH2O system at the wide range of х = 0–1 were investigated. No solid solutions were observed at the system. A monophasic region at х = 0.25 with the compound Rb5H7(PO4)4 was found. The thermodynamic and transport properties of Rb5H7(PO4)4 were studied in detail. The other compositions correspond to diphasic mixtures of two salts: RbH2PO4 and Rb5H7(PO4)4 (х = 0–0.2), or Rb2HPO4·yH2O and Rb5H7(PO4)4 (at х higher 0.25). The sharp increase of proton conductivity up to 3·10−2 S/cm under highly humidified conditions was found for х = 0.1–0.25 at temperatures >240 °С can be associated with the superionic phase transitions of RbH2PO4 and Rb5H7(PO4)4. A weak composite effect with a slight increase of conductivity (about one order of magnitude) at low temperatures compared to those for the pure salts RbH2PO4 and Rb2HPO4·2H2O was shown for all samples.

KW - A60

KW - ac-impedance spectroscopy

KW - Dihydrophosphate of rubidium

KW - Hydrophosphate of rubidium dihydrate

KW - IR-spectroscopy

KW - Proton conductivity

KW - PROTON CONDUCTIVITY

KW - HIGH-TEMPERATURE

KW - CSH2PO4

KW - SUPERPROTONIC CONDUCTIVITY

KW - DEHYDRATION BEHAVIOR

KW - RBH2PO4

KW - BONDS

KW - TRANSITIONS

UR - http://www.scopus.com/inward/record.url?scp=85057726903&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2018.12.005

DO - 10.1016/j.ssi.2018.12.005

M3 - Article

AN - SCOPUS:85057726903

VL - 329

SP - 124

EP - 130

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -

ID: 17827818