Ultra-thick 3D graphene frameworks with hierarchical pores for high-performance flexible micro-supercapacitors
文献类型：期刊论文
| 作者 | Yu, Xinling1,2,3; Li, Nian2,3 ; Zhang, Shudong2,3; Liu, Cui2,3; Chen, Liqing2,3; Han, Shuai1,2,3; Song, Yanping2,3; Han, Mingyong4; Wang, Zhenyang2,3
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| 刊名 | JOURNAL OF POWER SOURCES
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| 出版日期 | 2020-12-01 |
| 卷号 | 478 |
| ISSN号 | 0378-7753 |
| 关键词 | Ultra-thick graphene frameworks Hierarchical porous structure Laser-induced graphene (LIG) LIG/PPy composites Micro-supercapacitors |
| DOI | 10.1016/j.jpowsour.2020.229075 |
| 通讯作者 | Li, Nian(linian@issp.ac.cn) ; Wang, Zhenyang(zywang@iim.ac.cn) |
| 英文摘要 | Constructing 3D graphene frameworks with ultra-thickness and rich ion transport paths is of great significance for the practical application of graphene supercapacitors. Herein, 3D porous graphene frameworks, with thickness up to 320 mu m, are directly grown by laser induction on the synthesized polyimide by optimizing the thermal sensitivity of polyimide to increase laser penetration depth. Simultaneously, hierarchical pores are obtained due to fast liberation of gaseous products during laser radiation, which facilitates fast ion transport. Coupled with its conductive interconnection network, the as-prepared 3D graphene delivers a high specific capacitance of 132.2 mF cm(-2) at 0.5 mA cm(-2), which is nearly one order of magnitude larger than that of most reported laser induced graphene electrodes. Pseudocapacitive polypyrrole is further introduced into the gra-phene frameworks to prepare composite electrodes, which show specific capacitances as high as 2412.2 mF cm(-2) at 0.5 mA cm(-2). Accordingly, flexible solid-state micro-supercapacitors are constructed, with a high energy density of 134.4 mu W h cm(-2) at a power density of 325 mu W cm(-2). Furthermore, 95.6% of initial capacitance is retained after 10,000 cycles, indicating superior cycling stability. These results suggest that the ultra-thick hierarchical porous graphene frameworks have promising prospects for high-performance flexible microsupercapacitors. |
| WOS关键词 | POLYPYRROLE ; FILMS ; OXIDE ; ELECTRODES ; NANOSHEETS ; NANOWIRE ; LAYERS ; PAPER |
| 资助项目 | National Natural Science Foundation of China[U2032159] ; National Natural Science Foundation of China[62005292] ; National Natural Science Foundation of China[61605222] ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology[2017FXCX006] ; Youth spark of Chinese Academy of China[YZJJ2018QN25] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000589936300004 |
| 资助机构 | National Natural Science Foundation of China ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology ; Youth spark of Chinese Academy of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/105436]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, Nian; Wang, Zhenyang |
| 作者单位 | 1.Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 4.Tianjin Univ, Inst Mol Plus, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Xinling,Li, Nian,Zhang, Shudong,et al. Ultra-thick 3D graphene frameworks with hierarchical pores for high-performance flexible micro-supercapacitors[J]. JOURNAL OF POWER SOURCES,2020,478. |
| APA | Yu, Xinling.,Li, Nian.,Zhang, Shudong.,Liu, Cui.,Chen, Liqing.,...&Wang, Zhenyang.(2020).Ultra-thick 3D graphene frameworks with hierarchical pores for high-performance flexible micro-supercapacitors.JOURNAL OF POWER SOURCES,478. |
| MLA | Yu, Xinling,et al."Ultra-thick 3D graphene frameworks with hierarchical pores for high-performance flexible micro-supercapacitors".JOURNAL OF POWER SOURCES 478(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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