Advanced scalable zeolite "ions-sieving" composite membranes with high selectivity

被引：32

作者：

Dai, Qing ^{[1
,2
]}

Lu, Wenjing ^{[1
,2
]}

Zhao, Yuyue ^{[1
,2
]}

Zhang, Huamin ^{[1
,3
]}

Zhu, Xiangxue ^{[4
]}

Li, Xianfeng ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Div Fossil Energy Convers, 457 Zhongshan Rd, Dalian 116023, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2020年 / 595卷 / 595期

关键词：

Flow batteries; Pore size exclusion; Zeolites; Composite membranes; Interfacial polymerization; POLY(ETHER ETHER KETONE); POROUS MEMBRANES; INTERFACIAL POLYMERIZATION; HYBRID MEMBRANE; FLOW; PERFORMANCE; MORPHOLOGY; KINETICS; LAYER; ACID;

D O I：

10.1016/j.memsci.2019.117569

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A zeolite composite membrane (ZCM) was designed and fabricated via a simple versatile and scalable method. A thin layer of ZSM-35 flakes with pore size between hydrated protons and vanadium ions was fixed on the poly (ether-sulfone)/sulfonated poly(ether-ether-ketone) (PES/SPEEK) porous substrate by in-situ interfacial polymerization. The ZSM flake layer can perfectly separate hydrated vanadium ions and protons, therefore, show very impressive performance for vanadium flow batteries (VFBs). As a result, a VFB assembled with an optimized ZCM exhibited a columbic efficiency more than 99% and energy efficiency of over 91% at a current density of 80 mA cm(-2), which is among the highest performance ever reported. Furthermore, the energy efficiency can reach 81.6% at a very high current density of 200 mA cm(-2) and keep stable for 1000 cycles at a current density of 180 mA cm(-2). This method opened a door toward the large-scale production of highly selective composite membranes for flow batteries.

引用

页数：7