An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries
文献类型：期刊论文
| 作者 | Zhang, Yifan1,3; Zhang, Xihao1,3; Xu, Zeyu1; Zhang, Denghua1,3; Yu, Wenjie2; Zhang, Yue1,3; Liu, Lansong1,3; Liu, Jianguo1; Yan, Chuanwei1 |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2022-12-30 |
| 卷号 | 552页码:9 |
| ISSN号 | 0378-7753 |
| 关键词 | Electrospinning Porous electrodes Mass transport Vanadium redox flow battery |
| DOI | 10.1016/j.jpowsour.2022.232241 |
| 通讯作者 | Liu, Jianguo(jgliu@imr.ac.cn) |
| 英文摘要 | 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. |
| 资助项目 | National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province ; [21975267] ; [2022JH6/100100001] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000882475800002 |
| 资助机构 | National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176728]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Jianguo |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Liaoning Univ, Coll Chem, Shenyang, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：金属研究所
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