Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor
Most electrodes for supercapacitors are prepared as thick layer electrodes. Compact, thick and free-standing electrodes are needed for supercapacitor with high volumetric capacitance and energy density. Carbon nanosheets were obtained from treating the bark of the Gelam tree (Melaleuca cajuput Powel...
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Italian Association of Chemical Engineering - AIDIC
2021
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my.utm.978482022-11-07T09:54:01Z http://eprints.utm.my/id/eprint/97848/ Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor Syarif, Nirwan Rohendi, Dedi Sri Haryati, Sri Haryati Lee, Chew Tin Wong, Wai Yin Sudarsono, Wulandhari Sumboja, Afriyanti TP Chemical technology Most electrodes for supercapacitors are prepared as thick layer electrodes. Compact, thick and free-standing electrodes are needed for supercapacitor with high volumetric capacitance and energy density. Carbon nanosheets were obtained from treating the bark of the Gelam tree (Melaleuca cajuput Powell) via hydrothermal and microwave processes. The XRD results showed the presence of graphitic carbon in the Gelam tree-derived carbon nanosheet. The carbon nanosheet (the thickness of 0.01 cm) was mixed with graphite and poly(aniline) as conducting binder to fabricate a supercapacitor electrode. Conductivity as high as 3.67 x 10-2 S cm-1 were obtained from the electrode using the carbon nanosheet to graphite the ratio of 3:7. The electrode with this composition had a porous structure. The electrode with a carbon nanosheet to graphite the ratio of 7:3 had a granular morphology with a low conductivity of 0.8 x 10-3 S cm-1. Cyclic voltammetry tests were conducted in lithium chloride and ammonium cyanate-based electrolytes. Both types of electrodes (ratio 3:7 and 7:3) had the same trend of capacitance and voltage window in lithium chloride and ammonium cyanate-based electrolytes. Capacitance as high as 0.0618 F was obtained from the electrode using the 7:3 ratios nanosheet in 10 % ammonium cyanate electrolyte. A novel supercapacitor with high capacitance designed using a thick layer electrode can readily be prepared from the carbon nanosheets derived from the agricultural wood waste. Italian Association of Chemical Engineering - AIDIC 2021 Article PeerReviewed Syarif, Nirwan and Rohendi, Dedi and Sri Haryati, Sri Haryati and Lee, Chew Tin and Wong, Wai Yin and Sudarsono, Wulandhari and Sumboja, Afriyanti (2021) Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor. Chemical Engineering Transactions, 83 (NA). pp. 553-558. ISSN 2283-9216 http://dx.doi.org/10.3303/CET2183093 DOI : 10.3303/CET2183093 |
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TP Chemical technology Syarif, Nirwan Rohendi, Dedi Sri Haryati, Sri Haryati Lee, Chew Tin Wong, Wai Yin Sudarsono, Wulandhari Sumboja, Afriyanti Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
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Most electrodes for supercapacitors are prepared as thick layer electrodes. Compact, thick and free-standing electrodes are needed for supercapacitor with high volumetric capacitance and energy density. Carbon nanosheets were obtained from treating the bark of the Gelam tree (Melaleuca cajuput Powell) via hydrothermal and microwave processes. The XRD results showed the presence of graphitic carbon in the Gelam tree-derived carbon nanosheet. The carbon nanosheet (the thickness of 0.01 cm) was mixed with graphite and poly(aniline) as conducting binder to fabricate a supercapacitor electrode. Conductivity as high as 3.67 x 10-2 S cm-1 were obtained from the electrode using the carbon nanosheet to graphite the ratio of 3:7. The electrode with this composition had a porous structure. The electrode with a carbon nanosheet to graphite the ratio of 7:3 had a granular morphology with a low conductivity of 0.8 x 10-3 S cm-1. Cyclic voltammetry tests were conducted in lithium chloride and ammonium cyanate-based electrolytes. Both types of electrodes (ratio 3:7 and 7:3) had the same trend of capacitance and voltage window in lithium chloride and ammonium cyanate-based electrolytes. Capacitance as high as 0.0618 F was obtained from the electrode using the 7:3 ratios nanosheet in 10 % ammonium cyanate electrolyte. A novel supercapacitor with high capacitance designed using a thick layer electrode can readily be prepared from the carbon nanosheets derived from the agricultural wood waste. |
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Article |
author |
Syarif, Nirwan Rohendi, Dedi Sri Haryati, Sri Haryati Lee, Chew Tin Wong, Wai Yin Sudarsono, Wulandhari Sumboja, Afriyanti |
author_facet |
Syarif, Nirwan Rohendi, Dedi Sri Haryati, Sri Haryati Lee, Chew Tin Wong, Wai Yin Sudarsono, Wulandhari Sumboja, Afriyanti |
author_sort |
Syarif, Nirwan |
title |
Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
title_short |
Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
title_full |
Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
title_fullStr |
Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
title_full_unstemmed |
Gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
title_sort |
gelam tree-derived carbon nanosheets as thick and freestanding electrode for supercapacitor |
publisher |
Italian Association of Chemical Engineering - AIDIC |
publishDate |
2021 |
url |
http://eprints.utm.my/id/eprint/97848/ http://dx.doi.org/10.3303/CET2183093 |
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1751536112047751168 |