Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets
The energy density of conventional supercapacitors is in the range of 6–10 Wh kg−1, which has restricted them from many applications that require devices with long durations. Herein, we report a method for enhancing the energy density of a device through the parallel stacking of five copper foils co...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72544/1/Electrochemical%20performance%20.pdf |
| _version_ | 1825950104392040448 |
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| author | Chiam, S. L. Lim, Hong Ngee Syed Mohd Jaafar, Syed Muhammad Hafiz Pandikumar, Alagarsamy Huang, Nay Ming |
| author_facet | Chiam, S. L. Lim, Hong Ngee Syed Mohd Jaafar, Syed Muhammad Hafiz Pandikumar, Alagarsamy Huang, Nay Ming |
| author_sort | Chiam, S. L. |
| collection | UPM |
| description | The energy density of conventional supercapacitors is in the range of 6–10 Wh kg−1, which has restricted them from many applications that require devices with long durations. Herein, we report a method for enhancing the energy density of a device through the parallel stacking of five copper foils coated on each side with graphene nanoplatelets. Microporous papers immersed in 2 M aqueous sodium sulphate were used as separators. With a low contact resistance of 0.05 Ω, the supercapacitor yielded an optimum specific energy density and a specific power density of 24.64 Wh kg−1 and 402 W kg−1 at 0.8 V, respectively. The working potential was increased to 2.4 V when three of the supercapacitors were connected in series, forming a tandem device. Its potential for real applications was manifested by the ability to light up a light-emitting diode for 40 s after charging for 60 s. |
| first_indexed | 2024-03-06T10:09:30Z |
| format | Article |
| id | upm.eprints-72544 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:09:30Z |
| publishDate | 2018 |
| publisher | Springer |
| record_format | dspace |
| spelling | upm.eprints-725442020-10-23T09:20:43Z http://psasir.upm.edu.my/id/eprint/72544/ Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets Chiam, S. L. Lim, Hong Ngee Syed Mohd Jaafar, Syed Muhammad Hafiz Pandikumar, Alagarsamy Huang, Nay Ming The energy density of conventional supercapacitors is in the range of 6–10 Wh kg−1, which has restricted them from many applications that require devices with long durations. Herein, we report a method for enhancing the energy density of a device through the parallel stacking of five copper foils coated on each side with graphene nanoplatelets. Microporous papers immersed in 2 M aqueous sodium sulphate were used as separators. With a low contact resistance of 0.05 Ω, the supercapacitor yielded an optimum specific energy density and a specific power density of 24.64 Wh kg−1 and 402 W kg−1 at 0.8 V, respectively. The working potential was increased to 2.4 V when three of the supercapacitors were connected in series, forming a tandem device. Its potential for real applications was manifested by the ability to light up a light-emitting diode for 40 s after charging for 60 s. Springer 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72544/1/Electrochemical%20performance%20.pdf Chiam, S. L. and Lim, Hong Ngee and Syed Mohd Jaafar, Syed Muhammad Hafiz and Pandikumar, Alagarsamy and Huang, Nay Ming (2018) Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets. Scientific Reports, 8 (1). art. no. 157. pp. 1-7. ISSN Nature Research http://www.ukm.my/fep/jem/content/2018-2.html 10.1007/s00339-018-2222-0 |
| spellingShingle | Chiam, S. L. Lim, Hong Ngee Syed Mohd Jaafar, Syed Muhammad Hafiz Pandikumar, Alagarsamy Huang, Nay Ming Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title | Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title_full | Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title_fullStr | Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title_full_unstemmed | Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title_short | Electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| title_sort | electrochemical performance of supercapacitor with stacked copper foils coated with graphene nanoplatelets |
| url | http://psasir.upm.edu.my/id/eprint/72544/1/Electrochemical%20performance%20.pdf |
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