Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors
The Zn-ion micro-supercapacitor (ZMSC) is a promising candidate for developing miniaturized and integrated energy storage devices. To achieve high-performance functional groups with simple processing to composite with rod-like active PANI fibers, we prepared exfoliated graphene (EG) with an appropri...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/11/4470 |
| _version_ | 1797597102353678336 |
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| author | Yili Wang Jin Niu |
| author_facet | Yili Wang Jin Niu |
| author_sort | Yili Wang |
| collection | DOAJ |
| description | The Zn-ion micro-supercapacitor (ZMSC) is a promising candidate for developing miniaturized and integrated energy storage devices. To achieve high-performance functional groups with simple processing to composite with rod-like active PANI fibers, we prepared exfoliated graphene (EG) with an appropriate amount of O-containing functional groups. The appropriate O content simultaneously facilitated self-assembly of the EG and PANI fibers and maintained the electric conductivity of the composite, producing a free-standing EG/PANI film without additional conductive additives or current collectors. As an interdigital electrode for the ZMSC, the EG/PANI film showed ultrahigh capacitance of 1.8 F cm<sup>−2</sup> at 2.6 mA cm<sup>−2</sup> (361.3 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>) and landmark energy density of 755.8 μWh cm<sup>−2</sup> at 2.3 mW cm<sup>−2</sup> (148.2 Wh kg<sup>−1</sup> at 451.7 W kg<sup>−1</sup>). The facile preparation of the high-performance EG/PANI electrode provides a potential path for practical applications with ZMSCs. |
| first_indexed | 2024-03-11T03:02:03Z |
| format | Article |
| id | doaj.art-d45b7b89af524e5c9e1bd7a0af3629f1 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T03:02:03Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-d45b7b89af524e5c9e1bd7a0af3629f12023-11-18T08:17:02ZengMDPI AGMolecules1420-30492023-05-012811447010.3390/molecules28114470Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-SupercapacitorsYili Wang0Jin Niu1Laboratory of Electrochemical Process and Technology for Materials, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaLaboratory of Electrochemical Process and Technology for Materials, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaThe Zn-ion micro-supercapacitor (ZMSC) is a promising candidate for developing miniaturized and integrated energy storage devices. To achieve high-performance functional groups with simple processing to composite with rod-like active PANI fibers, we prepared exfoliated graphene (EG) with an appropriate amount of O-containing functional groups. The appropriate O content simultaneously facilitated self-assembly of the EG and PANI fibers and maintained the electric conductivity of the composite, producing a free-standing EG/PANI film without additional conductive additives or current collectors. As an interdigital electrode for the ZMSC, the EG/PANI film showed ultrahigh capacitance of 1.8 F cm<sup>−2</sup> at 2.6 mA cm<sup>−2</sup> (361.3 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>) and landmark energy density of 755.8 μWh cm<sup>−2</sup> at 2.3 mW cm<sup>−2</sup> (148.2 Wh kg<sup>−1</sup> at 451.7 W kg<sup>−1</sup>). The facile preparation of the high-performance EG/PANI electrode provides a potential path for practical applications with ZMSCs.https://www.mdpi.com/1420-3049/28/11/4470micro-supercapacitorZn anodeEG/PANI filmfacile preparation |
| spellingShingle | Yili Wang Jin Niu Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors Molecules micro-supercapacitor Zn anode EG/PANI film facile preparation |
| title | Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors |
| title_full | Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors |
| title_fullStr | Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors |
| title_full_unstemmed | Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors |
| title_short | Facile Self-Assembly of Exfoliated Graphene/PANI Film for High-Energy Zn-Ion Micro-Supercapacitors |
| title_sort | facile self assembly of exfoliated graphene pani film for high energy zn ion micro supercapacitors |
| topic | micro-supercapacitor Zn anode EG/PANI film facile preparation |
| url | https://www.mdpi.com/1420-3049/28/11/4470 |
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