DataVXACS Applied Energy MaterialsPaper
journal article·2021-09-27Open access

Prussian Blue Analogue—Sodium–Vanadium Hexacyanoferrate as a Cathode Material for Na-Ion Batteries

Dominika Baster, Łukasz Kondracki, Emad Oveisi, Sigita Trabesinger, Hubert H. Girault

ACS Applied Energy Materials· Volume 4· Issue 9
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Source abstract

Abstract

Sodium-ion (Na-ion) batteries have been attracting great interest because of a wide range of potential applications and sodium abundance. Yet, the performance of Na-ion electrode materials needs improvement to be able to compete with lithium-ion electrode materials. Here, sodium–vanadium hexacyanoferrate (NaVHCF) is investigated as a cathode active material in rechargeable Na-ion batteries. We explore the electrochemical performance of NaVHCF in a liquid organic electrolyte and demonstrate a high and very stable working potential of around 3.3 V vs Na+/Na, achieving excellent capacity retention of 73% after 200 cycles. Vanadium substitution in a Prussian blue crystal structure can improve the cycle life by acting as a pillar in interstitial spaces. These results represent a step forward in the development of cathode materials for Na-ion batteries.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Physical and Analytical Electrochemistry, École Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis, Rue de l’Industrie 17, CH-1950 Sion, Switzerland

Electrochemistry Laboratory, Battery Electrodes and Cells Group, Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland

Interdisciplinary Centre for Electron Microscopy, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Funding

Schweizerischer Nationalfonds zur F??rderung der Wissenschaftlichen Forschung · Swiss Competence Centre for Heat and Electricity Storage

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