Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors
Three-dimensional porous scaffolds doped with the heteroatoms show excellent performances in energy conversion and storage. Herein, we report a green synthesis approach to construct the oxygen-doped porous carbon electrodes by carbonizing the oxygen-rich biomass material, sodium alginate. By precise...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-11-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519304861 |
| _version_ | 1819263730831065088 |
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| author | Lichen Xia Hui Huang Zeng Fan Dianwen Hu Dongmei Zhang Abdul Sammed Khan Muhammad Usman Lujun Pan |
| author_facet | Lichen Xia Hui Huang Zeng Fan Dianwen Hu Dongmei Zhang Abdul Sammed Khan Muhammad Usman Lujun Pan |
| author_sort | Lichen Xia |
| collection | DOAJ |
| description | Three-dimensional porous scaffolds doped with the heteroatoms show excellent performances in energy conversion and storage. Herein, we report a green synthesis approach to construct the oxygen-doped porous carbon electrodes by carbonizing the oxygen-rich biomass material, sodium alginate. By precisely controlling the carbonization temperature and increasing the mole ratio of α-L-guluronic acid units/β-D-mannuronic acid units in sodium alginate, the morphology, oxygen content and electrical conductivity of the as-obtained carbonaceous electrode are well balanced. This electrode material delivers capacitance of up to 424.6 F g−1 in 6 M potassium hydroxide (KOH) electrolyte at 1 A g−1, and good cyclic stability with the capacitance retention of >90% after 20,000 charge-discharge cycles. Such excellent electrochemical performance can be attributed to both the unique hierarchical macro-/meso-/microporous structure and the presence of abundant oxygen-containing functional groups in the as-prepared carbonized sodium alginate aerogels. The capacitance of our oxygen-doped porous carbon electrodes is at least twice greater than those of other carbonaceous electrodes produced from biomass precursors reported in literatures. This work provides a facile, effective and environmental-friendly approach for the fabrication of high-performance heteroatom-doped carbon-based electrodes for supercapacitor applications. Keywords: Green, Binder-free, Oxygen-doped, Macro-/meso-/microporous |
| first_indexed | 2024-12-23T20:18:14Z |
| format | Article |
| id | doaj.art-0dec3c1be86f46ac935422c8533921f9 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-23T20:18:14Z |
| publishDate | 2019-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-0dec3c1be86f46ac935422c8533921f92022-12-21T17:32:36ZengElsevierMaterials & Design0264-12752019-11-01182Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitorsLichen Xia0Hui Huang1Zeng Fan2Dianwen Hu3Dongmei Zhang4Abdul Sammed Khan5Muhammad Usman6Lujun Pan7School of Physics, Dalian University of Technology, Dalian 116024, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR China; Corresponding authors.College of Chemistry, Jilin University, Changchun 130021, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, PR China; Corresponding authors.Three-dimensional porous scaffolds doped with the heteroatoms show excellent performances in energy conversion and storage. Herein, we report a green synthesis approach to construct the oxygen-doped porous carbon electrodes by carbonizing the oxygen-rich biomass material, sodium alginate. By precisely controlling the carbonization temperature and increasing the mole ratio of α-L-guluronic acid units/β-D-mannuronic acid units in sodium alginate, the morphology, oxygen content and electrical conductivity of the as-obtained carbonaceous electrode are well balanced. This electrode material delivers capacitance of up to 424.6 F g−1 in 6 M potassium hydroxide (KOH) electrolyte at 1 A g−1, and good cyclic stability with the capacitance retention of >90% after 20,000 charge-discharge cycles. Such excellent electrochemical performance can be attributed to both the unique hierarchical macro-/meso-/microporous structure and the presence of abundant oxygen-containing functional groups in the as-prepared carbonized sodium alginate aerogels. The capacitance of our oxygen-doped porous carbon electrodes is at least twice greater than those of other carbonaceous electrodes produced from biomass precursors reported in literatures. This work provides a facile, effective and environmental-friendly approach for the fabrication of high-performance heteroatom-doped carbon-based electrodes for supercapacitor applications. Keywords: Green, Binder-free, Oxygen-doped, Macro-/meso-/microporoushttp://www.sciencedirect.com/science/article/pii/S0264127519304861 |
| spellingShingle | Lichen Xia Hui Huang Zeng Fan Dianwen Hu Dongmei Zhang Abdul Sammed Khan Muhammad Usman Lujun Pan Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors Materials & Design |
| title | Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors |
| title_full | Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors |
| title_fullStr | Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors |
| title_full_unstemmed | Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors |
| title_short | Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors |
| title_sort | hierarchical macro meso microporous oxygen doped carbon derived from sodium alginate a cost effective biomass material for binder free supercapacitors |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519304861 |
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