Rb5H7(PO4)4 as a new example of the superprotonic conductor

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Rb₅H₇(PO₄)₄ as a new example of the superprotonic conductor. / Gaydamaka, Anna A.; Ponomareva, Valentina G.; Bagryantseva, Irina N.

In: Ionics, Vol. 25, No. 2, 05.02.2019, p. 551-557.

Research output: Contribution to journal › Article › peer-review

Harvard

Gaydamaka, AA, Ponomareva, VG & Bagryantseva, IN 2019, 'Rb₅H₇(PO₄)₄ as a new example of the superprotonic conductor', Ionics, vol. 25, no. 2, pp. 551-557. https://doi.org/10.1007/s11581-018-2833-7

APA

Gaydamaka, A. A., Ponomareva, V. G., & Bagryantseva, I. N. (2019). Rb₅H₇(PO₄)₄ as a new example of the superprotonic conductor. Ionics, 25(2), 551-557. https://doi.org/10.1007/s11581-018-2833-7

Vancouver

Gaydamaka AA, Ponomareva VG, Bagryantseva IN. Rb₅H₇(PO₄)₄ as a new example of the superprotonic conductor. Ionics. 2019 Feb 5;25(2):551-557. doi: 10.1007/s11581-018-2833-7

Author

Gaydamaka, Anna A. ; Ponomareva, Valentina G. ; Bagryantseva, Irina N. / Rb₅H₇(PO₄)₄ as a new example of the superprotonic conductor. In: Ionics. 2019 ; Vol. 25, No. 2. pp. 551-557.

BibTeX

@article{b8fab00d5fa14b74a2a61ed005dac70a,

title = "Rb5H7(PO4)4 as a new example of the superprotonic conductor",

abstract = "Thermal and transport properties, as well as spectral characteristics of Rb5H7(PO4)4, have been investigated by several methods. It was shown that Rb5H7(PO4)4 undergoes a reversible phase transition at Tp ~ 237 °С. However, the interval of the high-temperature phase stability is quite narrow, about 15 °С. The initial dehydration event in Rb5H7(PO4)4 occurs at 200 °С. The conductivity measurements were performed under highly humidified conditions (PH2O ≈ 0.56 atm.) to suppress dehydration of the title salt. The phase transition leads to the sharp increase of proton conductivity up to 10−2 S/cm. The reverse transition goes slowly with significant hysteresis on cooling. Thus, the superprotonic conductivity of Rb5H7(PO4)4 was determined. The possibility of superionic phase stabilization by humidification was shown. The IR- and Raman spectra have been recorded at room temperature and discussed in relation to the crystal structure.",

keywords = "Ac-impedance spectroscopy, Proton conductivity, RbH(PO), Superprotonic conductors, Thermal analysis, RBH2PO4, HIGH-TEMPERATURE, CSH2PO4, Rb5H7(PO4)(4), COMPOSITE, DEHYDRATION BEHAVIOR",

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

note = "Publisher Copyright: {\textcopyright} 2018, Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2019",

month = feb,

day = "5",

doi = "10.1007/s11581-018-2833-7",

language = "English",

volume = "25",

pages = "551--557",

journal = "Ionics",

issn = "0947-7047",

publisher = "Institute for Ionics",

number = "2",

}

RIS

TY - JOUR

T1 - Rb5H7(PO4)4 as a new example of the superprotonic conductor

AU - Gaydamaka, Anna A.

AU - Ponomareva, Valentina G.

AU - Bagryantseva, Irina N.

PY - 2019/2/5

Y1 - 2019/2/5

N2 - Thermal and transport properties, as well as spectral characteristics of Rb5H7(PO4)4, have been investigated by several methods. It was shown that Rb5H7(PO4)4 undergoes a reversible phase transition at Tp ~ 237 °С. However, the interval of the high-temperature phase stability is quite narrow, about 15 °С. The initial dehydration event in Rb5H7(PO4)4 occurs at 200 °С. The conductivity measurements were performed under highly humidified conditions (PH2O ≈ 0.56 atm.) to suppress dehydration of the title salt. The phase transition leads to the sharp increase of proton conductivity up to 10−2 S/cm. The reverse transition goes slowly with significant hysteresis on cooling. Thus, the superprotonic conductivity of Rb5H7(PO4)4 was determined. The possibility of superionic phase stabilization by humidification was shown. The IR- and Raman spectra have been recorded at room temperature and discussed in relation to the crystal structure.

AB - Thermal and transport properties, as well as spectral characteristics of Rb5H7(PO4)4, have been investigated by several methods. It was shown that Rb5H7(PO4)4 undergoes a reversible phase transition at Tp ~ 237 °С. However, the interval of the high-temperature phase stability is quite narrow, about 15 °С. The initial dehydration event in Rb5H7(PO4)4 occurs at 200 °С. The conductivity measurements were performed under highly humidified conditions (PH2O ≈ 0.56 atm.) to suppress dehydration of the title salt. The phase transition leads to the sharp increase of proton conductivity up to 10−2 S/cm. The reverse transition goes slowly with significant hysteresis on cooling. Thus, the superprotonic conductivity of Rb5H7(PO4)4 was determined. The possibility of superionic phase stabilization by humidification was shown. The IR- and Raman spectra have been recorded at room temperature and discussed in relation to the crystal structure.

KW - Ac-impedance spectroscopy

KW - Proton conductivity

KW - RbH(PO)

KW - Superprotonic conductors

KW - Thermal analysis

KW - RBH2PO4

KW - HIGH-TEMPERATURE

KW - CSH2PO4

KW - Rb5H7(PO4)(4)

KW - COMPOSITE

KW - DEHYDRATION BEHAVIOR

UR - http://www.scopus.com/inward/record.url?scp=85058849130&partnerID=8YFLogxK

U2 - 10.1007/s11581-018-2833-7

DO - 10.1007/s11581-018-2833-7

M3 - Article

AN - SCOPUS:85058849130

VL - 25

SP - 551

EP - 557

JO - Ionics

JF - Ionics

SN - 0947-7047

IS - 2

ER -

ID: 17928223