Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors
The recyclable utilization of waste biomass is increasingly important for the development of a sustainable society. Here, the sawdust-derived activated carbon (SD-AC) has been prepared via a convenient H<sub>3</sub>PO<sub>4</sub>-based activation method and further trialed as...
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MDPI AG
2022-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/5/810 |
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| author | Yan Zhou Jun Li Shilin Hu Gujie Qian Juanjuan Shi Shengyun Zhao Yulin Wang Chuan Wang Jiabiao Lian |
| author_facet | Yan Zhou Jun Li Shilin Hu Gujie Qian Juanjuan Shi Shengyun Zhao Yulin Wang Chuan Wang Jiabiao Lian |
| author_sort | Yan Zhou |
| collection | DOAJ |
| description | The recyclable utilization of waste biomass is increasingly important for the development of a sustainable society. Here, the sawdust-derived activated carbon (SD-AC) has been prepared via a convenient H<sub>3</sub>PO<sub>4</sub>-based activation method and further trialed as an electrode for use as a high-performance symmetric supercapacitor. The as-prepared SD-AC possesses a hierarchically porous structure with micropores (0.55 nm) and mesopores (2.58 nm), accounting for its high specific surface area of 621 m<sup>2</sup> g<sup>−1</sup>, with a pore volume of 0.35 cm<sup>3</sup> g<sup>−1</sup>. Such a hierarchically porous structure can offer a favorable pathway for fast ion penetration and transportation, enhancing its electrochemical performance. As a result, the SD-AC electrode exhibits a maximum specific capacitance of up to 244.1 F g<sup>−1</sup> at 1.0 A g<sup>−1</sup>, a high rate capability (129.06 F g<sup>−1</sup> at 20 A g<sup>−1</sup>), and an excellent cycling performance, with 87% retention over 10,000 cycles at 10 A g<sup>−1</sup>. Of particular note is that the SD-AC-based symmetric supercapacitor achieves a maximum energy density of 19.9 Wh kg<sup>−1</sup> at the power density of 650 W kg<sup>−1</sup>, with a long-term cycle lifespan. This work showcases the recyclable utilization of waste biomass for the preparation of high-value activated carbon for efficient energy storage. |
| first_indexed | 2024-03-09T20:28:21Z |
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| language | English |
| last_indexed | 2024-03-09T20:28:21Z |
| publishDate | 2022-02-01 |
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| series | Nanomaterials |
| spelling | doaj.art-9a0ba6b1282e469cb766e313cfe867c62023-11-23T23:30:32ZengMDPI AGNanomaterials2079-49912022-02-0112581010.3390/nano12050810Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric SupercapacitorsYan Zhou0Jun Li1Shilin Hu2Gujie Qian3Juanjuan Shi4Shengyun Zhao5Yulin Wang6Chuan Wang7Jiabiao Lian8School of Ecology and Resource Engineering, School of Civil Engineering and Architecture, Wuyi University, Wuyishan 354300, ChinaKey Laboratory of Zhenjiang, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaSchool of Ecology and Resource Engineering, School of Civil Engineering and Architecture, Wuyi University, Wuyishan 354300, ChinaCollege of Science and Engineering, Flinders University, Bedford Park, SA 5042, AustraliaSchool of Ecology and Resource Engineering, School of Civil Engineering and Architecture, Wuyi University, Wuyishan 354300, ChinaSchool of Ecology and Resource Engineering, School of Civil Engineering and Architecture, Wuyi University, Wuyishan 354300, ChinaSchool of Ecology and Resource Engineering, School of Civil Engineering and Architecture, Wuyi University, Wuyishan 354300, ChinaInstitute of Advanced Synthesis, Jiangsu National Synergetic Innovation Center for Advanced Materials, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing 211800, ChinaKey Laboratory of Zhenjiang, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaThe recyclable utilization of waste biomass is increasingly important for the development of a sustainable society. Here, the sawdust-derived activated carbon (SD-AC) has been prepared via a convenient H<sub>3</sub>PO<sub>4</sub>-based activation method and further trialed as an electrode for use as a high-performance symmetric supercapacitor. The as-prepared SD-AC possesses a hierarchically porous structure with micropores (0.55 nm) and mesopores (2.58 nm), accounting for its high specific surface area of 621 m<sup>2</sup> g<sup>−1</sup>, with a pore volume of 0.35 cm<sup>3</sup> g<sup>−1</sup>. Such a hierarchically porous structure can offer a favorable pathway for fast ion penetration and transportation, enhancing its electrochemical performance. As a result, the SD-AC electrode exhibits a maximum specific capacitance of up to 244.1 F g<sup>−1</sup> at 1.0 A g<sup>−1</sup>, a high rate capability (129.06 F g<sup>−1</sup> at 20 A g<sup>−1</sup>), and an excellent cycling performance, with 87% retention over 10,000 cycles at 10 A g<sup>−1</sup>. Of particular note is that the SD-AC-based symmetric supercapacitor achieves a maximum energy density of 19.9 Wh kg<sup>−1</sup> at the power density of 650 W kg<sup>−1</sup>, with a long-term cycle lifespan. This work showcases the recyclable utilization of waste biomass for the preparation of high-value activated carbon for efficient energy storage.https://www.mdpi.com/2079-4991/12/5/810sawdustactivated carbonH<sub>3</sub>PO<sub>4</sub> activationhierarchically porous structuresymmetric supercapacitors |
| spellingShingle | Yan Zhou Jun Li Shilin Hu Gujie Qian Juanjuan Shi Shengyun Zhao Yulin Wang Chuan Wang Jiabiao Lian Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors Nanomaterials sawdust activated carbon H<sub>3</sub>PO<sub>4</sub> activation hierarchically porous structure symmetric supercapacitors |
| title | Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors |
| title_full | Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors |
| title_fullStr | Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors |
| title_full_unstemmed | Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors |
| title_short | Sawdust-Derived Activated Carbon with Hierarchical Pores for High-Performance Symmetric Supercapacitors |
| title_sort | sawdust derived activated carbon with hierarchical pores for high performance symmetric supercapacitors |
| topic | sawdust activated carbon H<sub>3</sub>PO<sub>4</sub> activation hierarchically porous structure symmetric supercapacitors |
| url | https://www.mdpi.com/2079-4991/12/5/810 |
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