Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors
Preparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrod...
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MDPI AG
2019-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/11/2188 |
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| author | Peihui Luo Ying Lin |
| author_facet | Peihui Luo Ying Lin |
| author_sort | Peihui Luo |
| collection | DOAJ |
| description | Preparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrode material for supercapacitors revealed a specific capacitance of 115 F·g<sup>−1</sup> at a current density of 1 A·g<sup>−1</sup>, and a high capacitance retention of 70% as current density increased to 40 A·g<sup>−1</sup>. The excellent rate capability was mainly attributed to the reserved porous structure and higher electrical conductivity for 3DG after thermal reduction than its RGO hydrogel precursor. |
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| format | Article |
| id | doaj.art-84c36bfedaa94b46863c9b9ac3142b10 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-13T01:52:13Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-84c36bfedaa94b46863c9b9ac3142b102022-12-22T00:03:29ZengMDPI AGApplied Sciences2076-34172019-05-01911218810.3390/app9112188app9112188Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for SupercapacitorsPeihui Luo0Ying Lin1Organic Optoelectronics Engineering Research Center of Fujian’s Universities, College of Electronics and Information Science, Fujian Jiangxia University, Fuzhou 350108, ChinaOrganic Optoelectronics Engineering Research Center of Fujian’s Universities, College of Electronics and Information Science, Fujian Jiangxia University, Fuzhou 350108, ChinaPreparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrode material for supercapacitors revealed a specific capacitance of 115 F·g<sup>−1</sup> at a current density of 1 A·g<sup>−1</sup>, and a high capacitance retention of 70% as current density increased to 40 A·g<sup>−1</sup>. The excellent rate capability was mainly attributed to the reserved porous structure and higher electrical conductivity for 3DG after thermal reduction than its RGO hydrogel precursor.https://www.mdpi.com/2076-3417/9/11/2188three-dimensional graphenethermal reductionrate performancesupercapacitors |
| spellingShingle | Peihui Luo Ying Lin Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors Applied Sciences three-dimensional graphene thermal reduction rate performance supercapacitors |
| title | Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors |
| title_full | Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors |
| title_fullStr | Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors |
| title_full_unstemmed | Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors |
| title_short | Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors |
| title_sort | further thermal reduction of reduced graphene oxide aerogel with excellent rate performance for supercapacitors |
| topic | three-dimensional graphene thermal reduction rate performance supercapacitors |
| url | https://www.mdpi.com/2076-3417/9/11/2188 |
| work_keys_str_mv | AT peihuiluo furtherthermalreductionofreducedgrapheneoxideaerogelwithexcellentrateperformanceforsupercapacitors AT yinglin furtherthermalreductionofreducedgrapheneoxideaerogelwithexcellentrateperformanceforsupercapacitors |