Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose Sensing
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 incre...
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/11/2881 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T05:13:17Z |
| format | Article |
| id | doaj.art-ce7b79f159ba41fb868eacbc1a7347ff |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T05:13:17Z |
| publishDate | 2021-10-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ce7b79f159ba41fb868eacbc1a7347ff2023-11-23T00:39:50ZengMDPI AGNanomaterials2079-49912021-10-011111288110.3390/nano11112881Extended Graphite Supported Flower-like MnO<sub>2</sub> as Bifunctional Materials for Supercapacitors and Glucose SensingHan-Wei Chang0Chung-Li Dong1Yan-Hua Chen2Yuan-Zhang Xu3Tzu-Chi Huang4Song-Chi Chen5Feng-Jiin Liu6Yin-Hung Lai7Yu-Chen Tsai8Department of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Physics, Tamkang University, Tamsui, New Taipei City 25137, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National United University, Miaoli 360302, TaiwanDepartment of Chemical Engineering, National Chung Hsing University, Taichung 40227, TaiwanA 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.https://www.mdpi.com/2079-4991/11/11/2881MnO<sub>2</sub>/extended graphitesupercapacitorsglucose sensing |
| spellingShingle | 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 Nanomaterials MnO<sub>2</sub>/extended graphite supercapacitors glucose sensing |
| title | 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_short | 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 |
| topic | MnO<sub>2</sub>/extended graphite supercapacitors glucose sensing |
| url | https://www.mdpi.com/2079-4991/11/11/2881 |
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