Extended Graphite Supported Flower-like MnO2 as Bifunctional Materials for Supercapacitors and Glucose Sensing

A simple, efficient, and cost-effective extended graphite as a supporting platform further supported the MnO2 growth for the construction of hierarchical flower-like MnO2/extended graphite. MnO2/extended graphite exhibited an incre...

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Autores principales:	Han-Wei Chang, Chung-Li Dong, Yan-Hua Chen, Yuan-Zhang Xu, Tzu-Chi Huang, Song-Chi Chen, Feng-Jiin Liu, Yin-Hung Lai, Yu-Chen Tsai
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	MnO<sub>2</sub>/extended graphite supercapacitors glucose sensing Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ce7b79f159ba41fb868eacbc1a7347ff
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spelling	oai:doaj.org-article:ce7b79f159ba41fb868eacbc1a7347ff2021-11-25T18:30:34ZExtended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing10.3390/nano111128812079-4991https://doaj.org/article/ce7b79f159ba41fb868eacbc1a7347ff2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2881https://doaj.org/toc/2079-4991A simple, efficient, and cost-effective extended graphite as a supporting platform further supported the MnO<sub>2</sub> growth for the construction of hierarchical flower-like MnO<sub>2</sub>/extended graphite. MnO<sub>2</sub>/extended graphite exhibited an increase in sp<sup>2</sup> carbon bonds in comparison with that of extended graphite. It can be expected to display better electrical conductivity and further promote electron/ion transport kinetics for boosting the electrochemical performance in supercapacitors and glucose sensing. In supercapacitors, MnO<sub>2</sub>/extended graphite delivered an areal capacitance value of 20.4 mF cm<sup>−2</sup> at 0.25 mA cm<sup>−2</sup> current densities and great cycling stability (capacitance retention of 83% after 1000 cycles). In glucose sensing, MnO<sub>2</sub>/extended graphite exhibited a good linear relationship in glucose concentration up to about 5 mM, sensitivity of 43 μA mM<sup>−1</sup>cm<sup>−2</sup>, and the limit of detection of 0.081 mM. It is further concluded that MnO<sub>2</sub>/extended graphite could be a good candidate for the future design of synergistic multifunctional materials in electrochemical techniques.Han-Wei ChangChung-Li DongYan-Hua ChenYuan-Zhang XuTzu-Chi HuangSong-Chi ChenFeng-Jiin LiuYin-Hung LaiYu-Chen TsaiMDPI AGarticleMnO<sub>2</sub>/extended graphitesupercapacitorsglucose sensingChemistryQD1-999ENNanomaterials, Vol 11, Iss 2881, p 2881 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	MnO<sub>2</sub>/extended graphite supercapacitors glucose sensing Chemistry QD1-999
spellingShingle	MnO<sub>2</sub>/extended graphite supercapacitors glucose sensing Chemistry QD1-999 Han-Wei Chang Chung-Li Dong Yan-Hua Chen Yuan-Zhang Xu Tzu-Chi Huang Song-Chi Chen Feng-Jiin Liu Yin-Hung Lai Yu-Chen Tsai Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
description	A simple, efficient, and cost-effective extended graphite as a supporting platform further supported the MnO<sub>2</sub> growth for the construction of hierarchical flower-like MnO<sub>2</sub>/extended graphite. MnO<sub>2</sub>/extended graphite exhibited an increase in sp<sup>2</sup> carbon bonds in comparison with that of extended graphite. It can be expected to display better electrical conductivity and further promote electron/ion transport kinetics for boosting the electrochemical performance in supercapacitors and glucose sensing. In supercapacitors, MnO<sub>2</sub>/extended graphite delivered an areal capacitance value of 20.4 mF cm<sup>−2</sup> at 0.25 mA cm<sup>−2</sup> current densities and great cycling stability (capacitance retention of 83% after 1000 cycles). In glucose sensing, MnO<sub>2</sub>/extended graphite exhibited a good linear relationship in glucose concentration up to about 5 mM, sensitivity of 43 μA mM<sup>−1</sup>cm<sup>−2</sup>, and the limit of detection of 0.081 mM. It is further concluded that MnO<sub>2</sub>/extended graphite could be a good candidate for the future design of synergistic multifunctional materials in electrochemical techniques.
format	article
author	Han-Wei Chang Chung-Li Dong Yan-Hua Chen Yuan-Zhang Xu Tzu-Chi Huang Song-Chi Chen Feng-Jiin Liu Yin-Hung Lai Yu-Chen Tsai
author_facet	Han-Wei Chang Chung-Li Dong Yan-Hua Chen Yuan-Zhang Xu Tzu-Chi Huang Song-Chi Chen Feng-Jiin Liu Yin-Hung Lai Yu-Chen Tsai
author_sort	Han-Wei Chang
title	Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
title_short	Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
title_full	Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
title_fullStr	Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
title_full_unstemmed	Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
title_sort	extended graphite supported flower-like mno<sub>2</sub> as bifunctional materials for supercapacitors and glucose sensing
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ce7b79f159ba41fb868eacbc1a7347ff
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Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing

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