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Facile Synthesis of a Common Na‐Ion Battery Cathode Material Na3V2(PO4)2F3 by Spark Plasma Sintering

Nadeina, Arina and Rozier, Patrick and Seznec, Vincent Facile Synthesis of a Common Na‐Ion Battery Cathode Material Na3V2(PO4)2F3 by Spark Plasma Sintering. (2020) Energy Technology, 8 (5). 1901304. ISSN 2194-4288

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Official URL: https://doi.org/10.1002/ente.201901304

Abstract

In the pursuit of facile, fast, and efficient methods for the synthesis of various compounds for a variety of applications, spark plasma sintering (SPS) technique is considered to be a powerful and simple tool. Using this technique, a popular cathode material for Na‐ion batteries—Na3V2(PO4)2F3—is synthesized and characterized with X‐ray diffraction and scanning electron microscopy (SEM), and is electrochemically tested in Swagelok‐type cells in a galvanostatic mode. The obtained material is compared with the conventionally synthesized (via a solid‐state route) sample. SEM analysis shows 2 times smaller particles in the case of SPS‐synthesized material compared with the solid‐state‐synthesized material which is to be expected from the fast (40 min in total) SPS synthesis that practically excludes grain/particle growth and promotes much faster diffusion, thereby drastically enhancing the reaction kinetics. Electrochemical performance of the SPS‐obtained material shows an improvement in decreasing the overpotential and reducing the capacity loss at high C‐rates (8C).

Item Type:Article
HAL Id:hal-03148642
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Collège de France (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Nantes (FRANCE)
Other partners > Université de Picardie Jules Verne (FRANCE)
Other partners > PSL Research University (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Other partners > Université de Grenoble (FRANCE)
Other partners > Université de Haute Alsace - UHA (FRANCE)
Other partners > Université de Montpellier (FRANCE)
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Deposited On:22 Feb 2021 12:48

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