ZSM-5 Membranes Fabricated through Template-Free Gel for Energy Storage

被引：3

作者：

Zhang, Dezhu ^{[1
]}

Fan, Su ^{[2
]}

Xu, Kenan ^{[2
]}

Liu, Haotian ^{[2
]}

Chang, Nana ^{[1
]}

Wang, Yijie ^{[1
]}

Wang, Yixing ^{[1
]}

Huang, Kang ^{[1
,2
]}

Xu, Zhi ^{[3
]}

机构：

[1] Suzhou Lab, Suzhou 215123, Peoples R China

[2] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China

[3] East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2024年 / 63卷 / 30期

基金：

中国国家自然科学基金;

关键词：

Energy efficiency - Flow batteries - Membranes - Zeolites;

D O I：

10.1021/acs.iecr.4c01356

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Vanadium flow battery (VFB) shows great potential in balancing the volatility of renewable energy. In this work, we investigated, for the first time, the various properties of crystalline ZSM-5 membranes prepared through the organic template-free gel strategy in VFB. The subnano windows (similar to 0.55 nm) of ZSM-5 zeolite provided selective transport paths for protons (similar to 0.27 nm) and blocked the vanadium (>0.6 nm) migration through pore repulsion effect. The zeolite membranes exhibited a very low vanadium penetration rate (0.05 mmol L-1 h(-1)), achieving a Coulombic efficiency (CE) of 96.1%, a voltage efficiency of 78.3%, and an energy efficiency of 75.3% at the current density of 40 mA cm(-2). Notably, ZSM-5 prepared using the template-free strategy eliminates the need for a high-temperature calcination step, and the membrane has a lower defect density and exhibits a higher CE. The self-discharge time of the ZSM-5 zeolite membrane increased up to 78 h. Furthermore, the charge-discharge performance kept stable more than 300 cycles at 60 mA cm(-2).

引用

页码：13282 / 13290

页数：9

共 47 条

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