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Perovskite SrCo0.9Nb0.1O3−δ as an Anion‐Intercalated Electrode Material for Supercapacitors with Ultrahigh Volumetric Energy Density

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jul 2016 Australia Publisher:WileyJournal:Angewandte Chemie International Edition, volume 55, pages 9,576-9,579 (issn: 1433-7851, eissn: 1521-3773,

Authors: Yu Liu; Zongping Shao; Zongping Shao; Liang Zhu; Wei Zhou; Chao Su; Meilin Liu;

doi: 10.1002/anie.201603601 , 10.1002/ange.201603601

pmid: 27363300

handle: 20.500.11937/38247

Perovskite SrCo0.9Nb0.1O3−δ as an Anion‐Intercalated Electrode Material for Supercapacitors with Ultrahigh Volumetric Energy Density

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Abstract

AbstractWe have synthesized and characterized perovskite‐type SrCo0.9Nb0.1O3−δ (SCN) as a novel anion‐intercalated electrode material for supercapacitors in an aqueous KOH electrolyte, demonstrating a very high volumetric capacitance of about 2034.6 F cm−3 (and gravimetric capacitance of ca. 773.6 F g−1) at a current density of 0.5 A g−1 while maintaining excellent cycling stability with a capacity retention of 95.7 % after 3000 cycles. When coupled with an activated carbon (AC) electrode, the SCN/AC asymmetric supercapacitor delivered a specific energy density as high as 37.6 Wh kg−1 with robust long‐term stability.

Country

Australia

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Keywords

Energy storage, Perovskite oxides, 1503 Catalysis, 540, 1600 Chemistry, 530, Oxygen vacancy, Supercapacitors, Electrodes

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