High pseudocapacitive performance of MnO2 nanowires on recyclable electrodes

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Author(s)
Han, Zhao Jun
Bo, Zheng
Seo, Dong Han
Pineda, Shafique
Wang, Ye
Yang, Hui Ying
Ostrikov, Kostya Ken
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2016
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Abstract

Manganese oxides are promising pseudocapacitve materials for achieving both high power and energy densities in pseudocapacitors. However, it remains a great challenge to develop MnO2-based high-performance electrodes due to their low electrical conductance and poor stability. Here we show that MnO2 nanowires anchored on electrochemically modified graphite foil (EMGF) have a high areal capacitance of 167 mF cm-2 at a discharge current density of 0.2 mA cm-2 and a high capacitance retention after 5000 charge/discharge cycles (115 %), which are among the best values reported for any MnO2-based hybrid structures. The EMGF support can also be recycled and the newly deposited MnO2-based hybrids retain similarly high performance. These results demonstrate the successful preparation of pseudocapacitors with high capacity and cycling stability, which may open a new opportunity towards a sustainable and environmentally friendly method of utilizing electrochemical energy storage devices.

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ChemSusChem

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9

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9

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This is the peer reviewed version of the following article: High Pseudocapacitive Performance of MnO2 Nanowires on Recyclable Electrodes, ChemSusChem, 9 (6), pp. 1020-1026, 2016, which has been published in final form at https://doi.org/10.1002/cssc.201600024. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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Analytical chemistry

Other chemical sciences

Chemical engineering

Science & Technology

Physical Sciences

Chemistry, Multidisciplinary

Green & Sustainable Science & Technology

Chemistry

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Han, ZJ; Bo, Z; Seo, DH; Pineda, S; Wang, Y; Yang, HY; Ostrikov, KK, High pseudocapacitive performance of MnO2 nanowires on recyclable electrodes, ChemSusChem, 2016, 9 (9), pp. 1020-1026

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