Volume 139, Issue 16 51985
ARTICLE

Celgard/PIM-1 proton conducting composite membrane with reduced vanadium permeability

Victor E. Sizov

Corresponding Author

Victor E. Sizov

Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

Correspondence

Victor E. Sizov, Faculty of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia.

Email: [email protected]

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Vadim V. Zefirov

Vadim V. Zefirov

Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russia

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Yulia A. Volkova

Yulia A. Volkova

A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russia

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Danil I. Gusak

Danil I. Gusak

Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

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Elena P. Kharitonova

Elena P. Kharitonova

Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

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Igor I. Ponomarev

Igor I. Ponomarev

A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russia

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Marat O. Gallyamov

Marat O. Gallyamov

Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russia

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First published: 01 December 2021
Citations: 1

Funding information: Russian Science Foundation, Grant/Award Number: 21-13-00143

Abstract

Renewable energy systems need efficient and cheap storage devices and vanadium redox flow batteries (VRB) may become one of them. However, better performance of VRB membranes yet should be achieved. Novel composite Celgard-based films coated with PIM-1 for aqueous electrolyte VRB applications are presented. Two types of the composites with different PIM-1 loadings are obtained. Their properties are studied and compared with the original Celgard films. The deposited PIM-1 forms a smooth layer on the outer Celgard surface and penetrates inside the porous matrix, thus significantly reducing the pores diameter and affecting the transport properties of the composite film. The nanoporous structure of PIM-1 permits size-screening of H3O+/hydrated vanadium ions when used in aqueous vanadium redox flow batteries applications, which allows to tailor the membrane permeability for the two types of ions and, therefore, to increase its selectivity from 4.3 × 106 to 1.3 × 107 mS min cm−3, while maintaining high proton conductivity.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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