| Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery | |
| Zhang, Denghua1,2; Zhang, Xihao1,2; Luan, Chao1; Tang, Biao3; Zhang, Zhongyu3; Pu, Nianwen3; Zhang, Kaiyue1; Liu, Jianguo1; Yan, Chuanwei1 | |
| Corresponding Author | Zhang, Kaiyue(kyzhang@imr.ac.cn) ; Liu, Jianguo(jgliu@imr.ac.cn) |
| 2022-08-01 | |
| Source Publication | ENERGY STORAGE MATERIALS
 |
| ISSN | 2405-8297 |
| Volume | 49Pages:471-480 |
| Abstract | Thin membranes with high conductivity are of great importance for high power density vanadium flow batteries (VFBs), however, the trade-off between conductivity and ion selectivity limits their further development. Herein, an ultrathin composite membrane (~10 mu m) enabled by a zwitterionic interface between conductive polybenzimidazole (PBI) and porous polyethylene (PE) substrate is proposed to break the trade-off, and greatly enhance the power density of a VFB. The zwitterionic interface is engineered by the covalent reaction between polydopamine and zwitterionic sulfonated 3-dimethylaminopropylamine (DMAPAPS). The as-fabricated composite membrane features excellent mechanical properties and high dimensional stability. Furthermore, the zwitterionic interface facilitates proton transportation while blocking vanadium-ion permeation. More importantly, the ion selectivity of the ultrathin membrane is nearly three times higher than the pure PBI membrane (i. e., 2.71 x 10(4) vs. 1.09 x 10(4) S min cm(-3)). As a result, a VFB assembled with the ultrathin membrane demonstrates a superior energy efficiency of 78.7% at 300 mA cm(-2), and achieves an excellent cycle stability over 500 cycles at 300 mA cm(-2). Therefore, the engineering of zwitterionic interface provides a promising strategy in the development of ultrathin composite membrane for high power density VFBs. |
| Keyword | Vanadium flow battery Ultrathin composite membrane Zwitterionic interface Conductivity Ion selectivity |
| Funding Organization | National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province |
| DOI | 10.1016/j.ensm.2022.04.033 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[21975267] ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province[:2022JH6/100100001] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000798010600001 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174198 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Kaiyue; 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.Sichuan Xingming Energy & Environm Protect Technol, Chengdu, Sichuan, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Denghua,Zhang, Xihao,Luan, Chao,et al. Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery[J]. ENERGY STORAGE MATERIALS,2022,49:471-480. |
| APA | Zhang, Denghua.,Zhang, Xihao.,Luan, Chao.,Tang, Biao.,Zhang, Zhongyu.,...&Yan, Chuanwei.(2022).Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery.ENERGY STORAGE MATERIALS,49,471-480. |
| MLA | Zhang, Denghua,et al."Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery".ENERGY STORAGE MATERIALS 49(2022):471-480. |
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