A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks

doi:10.1039/c7ta08373d

	A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks
	Zhao, Yuyue 1; Li, Xianfeng 1,3; Qiao, Lin 1,2; Zhang, Huamin 1,3; Li, Mingrun 4; Yuan, Zhizhang 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2017-12-28
卷号	5 期号:48 页码:25555-25561
ISSN号	2050-7488
DOI	10.1039/c7ta08373d
文献子类	Article
英文摘要	A 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.
WOS关键词	VANADIUM FLOW BATTERY ; BASE BLEND MEMBRANES ; POLY(ETHER ETHER KETONE) ; RESEARCH-AND-DEVELOPMENT ; COMPOSITE MEMBRANES ; EXCHANGE MEMBRANES ; ENERGY-STORAGE ; FUEL-CELLS ; PERFORMANCE ; MORPHOLOGY
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000417953100047
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169198]
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
通讯作者	Li, Xianfeng
作者单位	1.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
推荐引用方式 GB/T 7714	Zhao, Yuyue,Li, Xianfeng,Qiao, Lin,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	Zhao, Yuyue,Li, Xianfeng,Qiao, Lin,Zhang, Huamin,Li, Mingrun,&Yuan, Zhizhang.(2017).A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks.JOURNAL OF MATERIALS CHEMISTRY A,5(48),25555-25561.
MLA	Zhao, Yuyue,et al."A Venus-flytrap-inspired pH-responsive porous membrane with internal crosslinking networks".JOURNAL OF MATERIALS CHEMISTRY A 5.48(2017):25555-25561.