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A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks
Qiao, Lin1,2; Zhang, Huamin1,3; Li, Mingrun4; Yuan, Zhizhang1; Zhao, Yuyue1; Li, Xianfeng1,3
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
2017-12-28
ISSN2050-7488
DOI10.1039/c7ta08373d
Volume5Issue:48Pages:25555-25561
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS KeywordVANADIUM FLOW BATTERY ; BASE BLEND MEMBRANES ; POLY(ETHER ETHER KETONE) ; RESEARCH-AND-DEVELOPMENT ; COMPOSITE MEMBRANES ; EXCHANGE MEMBRANES ; ENERGY-STORAGE ; FUEL-CELLS ; PERFORMANCE ; MORPHOLOGY
AbstractA Venus-flytrap-inspired pH-responsive polybenzimidazole (PBI) porous membrane is designed and fabricated for flow battery application. In the design, PBI membranes with tunable pores are firstly created by introducing hydrophilic sulfonated poly(ether ether ketone) (SPEEK) into the casting solution. Then internal crosslinking networks are built on the pore walls by in situ acid-base reaction between PBI and SPEEK to improve membrane selectivity, while keeping high conductivity. The in situ acid-base reaction process closely resembles the trapping mechanism of the Venus flytrap plant, whose lobes close when they sense contact with an external force. Moreover, a vanadium flow battery (VFB) with the resultant membrane exhibits outstanding battery performance with a coulombic efficiency of 99.5% and an energy efficiency of 89.1% at a current density of 80 mA cm(-2), which are much higher than for commercial Nafion 115 (93.4%, 82.5%). Most importantly, a VFB with the prepared membrane keeps stable after continuously running for more than 10 000 cycles at a current density of 140 mA cm(-2), showing super-high stability. This work provides a simple and biomimetic strategy to fabricate membranes with high conductivity and stability.
Language英语
WOS IDWOS:000417953100047
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169199
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi, Xianfeng
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100039, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Qiao, Lin,Zhang, Huamin,Li, Mingrun,et al. A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(48):25555-25561.
APA Qiao, Lin,Zhang, Huamin,Li, Mingrun,Yuan, Zhizhang,Zhao, Yuyue,&Li, Xianfeng.(2017).A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks.JOURNAL OF MATERIALS CHEMISTRY A,5(48),25555-25561.
MLA Qiao, Lin,et al."A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks".JOURNAL OF MATERIALS CHEMISTRY A 5.48(2017):25555-25561.
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