Novel Proton-Conducting Nanocomposites for Hydrogen Separation Membranes | Sciact - CRIS-system of Boreskov Institute of Catalysis

Novel Proton-Conducting Nanocomposites for Hydrogen Separation Membranes Full article

Conference

21 International Conference on Solid State Ionics
18-23 Jun 2017 , Padua

Journal

Solid State Ionics
ISSN: 0167-2738

Output data

Year: 2018, Volume: 322, Pages: 69-78 Pages count : 10 DOI: 10.1016/j.ssi.2018.05.003

Tags

Tungstates; Protonic conductivity; Hydrogen separation membranes

Authors

Sadykov V.A. ^1,2 , Bespalko Yu.N. ¹ , Krasnov A.V. ¹ , Skriabin P.I. ¹ , Lukashevich A.I. ¹ , Fedorova Yu.E. ¹ , Sadovskaya E.M. ^1,2 , Eremeev N.F. ¹ , Krieger T.A. ^1,2 , Ishchenko A.V. ^1,2 , Belyaev V.D. ¹ , Uvarov N.F. ^3,4 , Ulihin A.S. ³ , Skovorodin I.N. ⁵

Affiliations

1	Boreskov Institute of Catalysis SB RAS, pr. Akad. Lavrentieva 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
3	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze str. 18, Novosibirsk 630128, Russia
4	Novosibirsk State Technical University, pr. Karla Marksa 20, Novosibirsk 630073, Russia
5	Institute of Automation and Electrometry SB RAS, Academician Koptyug ave. 1, Novosibirsk 630090, Russia

Funding (2)

1	Russian Science Foundation	16-13-00112
2	Federal Agency for Scientific Organizations	0303-2015-0001 (II.2П/V.45-10)

Design of oxide and nanocomposite materials with high mixed protonic-electronic conductivity such as lanthanide niobates and tungstates is encouraging approach in developing hydrogen separation membranes. This work aims at elucidating the relation of structure, oxygen and protonic mobility of such materials. La0.99Ca0.01NbO4, LaNb3O9 and Nd5.5WO11.25−δ were synthesized by Pechini and citrate route. Nanocomposites with LaNb3O9 and Ni + Cu were prepared by ultrasonic dispersion or mechanical treatment in a high energy mill and wet impregnation, then sintered using conventional thermal sintering and hot pressing. All obtained materials were characterized using XRD, SEM, TEM with EDX analysis, IR and Raman spectroscopy. The oxygen and proton mobility were studied by isotope exchange, unit cell volume and weight relaxation techniques. The proton conductivity was studied by Van der Pauw technique. The main phases were scheelite for La0.99Ca0.01NbO4, perovskite for LaNb3O9 and fluorite for Nd5.5WO11.25−δ, extended defects were observed agreeing with IR and Raman spectroscopy data. The oxygen mobility studies revealed two types of bulk oxygen related to two phases in samples. D2O exchange studies demonstrated very fast protonic transport in samples. H2O desorption experiments revealed the working temperature range being 300–450 °C. The protonic conductivity values (~10−4 Ω−1 cm−1 at 400 °C) agree with the literature data and are sufficiently high for the practical application. Proton tracer and chemical diffusion coefficients values are ~10−11 and ~10−3 cm2/s at working temperatures, respectively. Successful test of proton conducting membrane with Nd5.5WO11.25−δ based functional layer showing promising performance has been carried out.

Sadykov V.A. , Bespalko Y.N. , Krasnov A.V. , Skriabin P.I. , Lukashevich A.I. , Fedorova Y.E. , Sadovskaya E.M. , Eremeev N.F. , Krieger T.A. , Ishchenko A.V. , Belyaev V.D. , Uvarov N.F. , Ulihin A.S. , Skovorodin I.N.
Novel Proton-Conducting Nanocomposites for Hydrogen Separation Membranes
Solid State Ionics. 2018. V.322. P.69-78. DOI: 10.1016/j.ssi.2018.05.003 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Sep 15, 2017
Accepted:	May 1, 2018
Published online:	May 10, 2018
Published print:	Sep 1, 2018

Web of science:	WOS:000438004800011
Scopus:	2-s2.0-85046736008
Elibrary:	35482573
Chemical Abstracts:	2018:941550
Chemical Abstracts (print):	171:419678
OpenAlex:	W2801342407

DB	Citing
Web of science	14
Scopus	17
Elibrary	17
OpenAlex	17