Poly(vinylidene fluoride) porous membranes precipitated in water/ethanol dual-coagulation bath: The relationship between morphology and performance in vanadium flow battery
文献类型：期刊论文
| 作者 | Cao, Jingyu1,2; Zhang, Huamin1; Xu, Wanxing1,2; Li, Xianfeng1 |
| 刊名 | journal of power sources
 |
| 出版日期 | 2014-03-01 |
| 卷号 | 249期号:1页码:84-91 |
| 关键词 | Vanadium flow battery Poly(vinylidene fluoride) membranes Dual-coagulation bath Morphology control |
| 通讯作者 | 张华民 ; 李先锋 |
| 英文摘要 | poly(vinylidene fluoride) (pvdf) porous membranes with tunable morphology are facilely prepared via dual-coagulation bath by phase inversion method and investigated in vanadium flow battery (vfb). water/ethanol solutions with different compositions are selected as the coagulation baths and the effect of water/ethanol including content ratio and immersion time on membrane morphology is studied in detail. sem results indicate the increased degree of crystallization and surface roughness of prepared membranes with higher ethanol content in coagulation bath and longer immersion time. in addition, beta phase is a dominated crystalline form in these membranes. the upper surface pore size variety and overall crystalline structure lead to a non-monotonous change of ions permeability and area resistance. as a result, the coulombic efficiency decreases on the whole with volume ratio of water/ethanol ranging from 10:0 to 3:7, whereas there is a raised peak at the ratio of 5:5. meanwhile, the voltage efficiency of these membranes exhibits an opposite tendency. therefore, the morphology and property of pvdf porous membranes can be adjusted via changing the composition of coagulation bath. this research presents an effective and feasible method to optimize the fabrication parameters of pvdf porous membranes for vfb application. (c) 2013 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | electrochemistry ; energy & fuels |
| 研究领域[WOS] | electrochemistry ; energy & fuels |
| 关键词[WOS] | phase-inversion ; pvdf membranes ; crystalline-structure ; fabrication ; separation ; stability ; progress |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000330256300013 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/143930]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Jingyu,Zhang, Huamin,Xu, Wanxing,et al. Poly(vinylidene fluoride) porous membranes precipitated in water/ethanol dual-coagulation bath: The relationship between morphology and performance in vanadium flow battery[J]. journal of power sources,2014,249(1):84-91. |
| APA | Cao, Jingyu,Zhang, Huamin,Xu, Wanxing,&Li, Xianfeng.(2014).Poly(vinylidene fluoride) porous membranes precipitated in water/ethanol dual-coagulation bath: The relationship between morphology and performance in vanadium flow battery.journal of power sources,249(1),84-91. |
| MLA | Cao, Jingyu,et al."Poly(vinylidene fluoride) porous membranes precipitated in water/ethanol dual-coagulation bath: The relationship between morphology and performance in vanadium flow battery".journal of power sources 249.1(2014):84-91. |
入库方式： OAI收割
来源：大连化学物理研究所
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