| An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries | |
| Zhang, Yifan1,2; Zhang, Xihao1,2; Xu, Zeyu1; Zhang, Denghua1,2; Yu, Wenjie3; Zhang, Yue1,2; Liu, Lansong1,2; Liu, Jianguo1; Yan, Chuanwei1 | |
| Corresponding Author | Liu, Jianguo(jgliu@imr.ac.cn) |
| 2022-12-30 | |
| Source Publication | JOURNAL OF POWER SOURCES
 |
| ISSN | 0378-7753 |
| Volume | 552Pages:9 |
| Abstract | Electrospinning technology has been extensively used to prepare electrodes for vanadium redox flow batteries (VRFBs). Nevertheless, electrospinning carbon nanofibers (ECNFs) electrodes suffer from low porosity and poor permeability, hence significantly hindering mass transport. To solve this critical issue, a new approach to prepare porous channel electrodes with large porosity based on electrospinning technology is proposed. The electrode is fabricated by electrospinning of polyacrylonitrile and poly (methyl methacrylate) (PMMA) solutions. PMMA not only acts as a sacrificial phase to form a porous channel structure inside the fibers, but also interconnects the fibers, which significantly increases the inter-fiber pore space and enhances the mass transfer performance. Electrochemical characterizations indicate that the electrodes have a remarkably elevated electrochemical specific surface area and outstanding electrochemical performance. Owing to the well-designed large-porosity porous channel structure of the electrode, the energy efficiency of the VRFB equipped with this electrode is 74.45% at 300 mA cm-2 and 81.03% at 200 mA cm-2, and the battery can be continuously charged and dis-charged for more than 1200 cycles, which demonstrates a long-term cycling stability of the electrode. All of these indicate that this efficient and durable method for propagating electrode has broad application prospects. |
| Keyword | Electrospinning Porous electrodes Mass transport Vanadium redox flow battery |
| Funding Organization | National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province |
| DOI | 10.1016/j.jpowsour.2022.232241 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province ; [21975267] ; [2022JH6/100100001] |
| WOS Research Area | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000882475800002 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176729 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Jianguo |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Liaoning Univ, Coll Chem, Shenyang, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Yifan,Zhang, Xihao,Xu, Zeyu,et al. An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries[J]. JOURNAL OF POWER SOURCES,2022,552:9. |
| APA | Zhang, Yifan.,Zhang, Xihao.,Xu, Zeyu.,Zhang, Denghua.,Yu, Wenjie.,...&Yan, Chuanwei.(2022).An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries.JOURNAL OF POWER SOURCES,552,9. |
| MLA | Zhang, Yifan,et al."An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries".JOURNAL OF POWER SOURCES 552(2022):9. |
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