New type of composite proton electrolytes based on CsH2PO4 synthesized by mechanical activation

被引：9

作者：

Ponomareva, Valentina G. ^{[1
,2
]}

Lavrova, Galina V. ^{[1
]}

机构：

[1] RAS, SB, Inst Solid State Chem & Mechnaochem, Kutateladze 18, Novosibirsk 630128, Russia

[2] Novosibirsk State Univ, Pirogova 2, Novosibirsk 630090, Russia

来源：

MATERIALS TODAY-PROCEEDINGS | 2019年 / 12卷

关键词：

Proton conductivity; cesium dihydrophosphate; tin pyrophosphate; proton composites; surface interaction; mechanical activation; CONDUCTIVITY;

D O I：

10.1016/j.matpr.2019.02.205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conductivity, structural and thermal properties of the (1-x)CsH2PO4-xSnP(2)O(7) composite electrolytes (x = 0.01-0.8) were investigated. The addition of dispersed tin pyrophosphate to CsH2PO4 and their mechanical mixing results in an increase in low temperature conductivity by 1-3 orders of magnitude depending on the composition. According to X-ray diffraction data there is no chemical interaction between the components and no new compounds are formed. X-ray diffraction and differential scanning calorimetry data show a significant change in structural and thermodynamic properties of CsH2PO4 in composites due to salt amorphization. The increase in conductivity is caused by salt disordering due to the interface interaction. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：9 / 12

页数：4

共 15 条

[1] CsH2PO4/NdPO4 Composites as Proton Conducting Electrolytes for Intermediate Temperature Fuel Cells [J].

Anfimova, Tatiana ;

Jensen, Annemette Hindhede ;

Christensen, Erik ;

Jensen, Jens Oluf ;

Bjerrum, Niels J. ;

Li, Qingfeng .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2015, 162 (04) :F436-F441

[2]

AVERBUCHPOUCHOT MT, 1993, CR ACAD SCI II, V316, P41

[3] Crystals with disordered hydrogen-bond networks and superprotonic conductivity. Review [J].

Baranov, AI .

CRYSTALLOGRAPHY REPORTS, 2003, 48 (06) :1012-1037

[4] High-performance solid acid fuel cells through humidity stabilization [J].

Boysen, DA ;

Uda, T ;

Chisholm, CRI ;

Haile, SM .

SCIENCE, 2004, 303 (5654) :68-70

[5]

Haile S.M., 2006, ELECTROCHEM SOLID A, V9, P261

[6] Solid acid proton conductors: from laboratory curiosities to fuel cell electrolytes [J].

Haile, Sossina M. ;

Chisholm, Calum R. I. ;

Sasaki, Kenji ;

Boysen, Dane A. ;

Uda, Tetsuya .

FARADAY DISCUSSIONS, 2007, 134 :17-39

[7] PYROPHOSPHATES OF TETRAVALENT ELEMENTS AND A MOSSBAUER STUDY OF SNP2O7 [J].

HUANG, CH ;

KNOP, O ;

OTHEN, DA ;

WOODHAMS, FW ;

HOWIE, RA .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1975, 53 (01) :79-91

[8] The thermodynamics and kinetics of the dehydration of CsH2PO4 studied in the presence of SiO2 [J].

Ikeda, Ayako ;

Haile, Sossina M. .

SOLID STATE IONICS, 2012, 213 :63-71

[9] Proton conductivity and interphase interaction in CsH2PO4-SrZrO3 composites [J].

Lavrova, G. V. ;

Shutova, E. S. ;

Ponomareva, V. G. ;

Dunyushkina, L. A. .

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2013, 49 (07) :718-724

[10] Intermediate-temperature fuel cell employing CsH2PO4/SiP2O7-based composite electrolytes [J].

Matsui, T ;

Kukino, T ;

Kikuchi, R ;

Eguchi, K .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (02) :A339-A342

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