THE PREPARATION AND PROPERTIES OF SULFONATED POLY(ETER ETHER KETONE) MEMBRANES FOR VANADIUM REDOX FLOW BATTERY APPLICATION

Yue Ding; Li-hua Wang; Xu-tong Han

doi:10.3724/SP.J.1105.2013.13108

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THE PREPARATION AND PROPERTIES OF SULFONATED POLY(ETER ETHER KETONE) MEMBRANES FOR VANADIUM REDOX FLOW BATTERY APPLICATION

Research Article | 更新时间：2021-03-19

- THE PREPARATION AND PROPERTIES OF SULFONATED POLY(ETER ETHER KETONE) MEMBRANES FOR VANADIUM REDOX FLOW BATTERY APPLICATION
- Acta Polymerica Sinica Issue 12, Pages: 1476-1482(2013)
- 作者机构：
  
  1. 天津工业大学材料科学与工程学院,天津,300387
  2. 中国科学院化学研究所,北京,100190
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2013.13108
  CLC：
- Published：20 December 2013，
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Yue Ding, Li-hua Wang, Xu-tong Han. THE PREPARATION AND PROPERTIES OF SULFONATED POLY(ETER ETHER KETONE) MEMBRANES FOR VANADIUM REDOX FLOW BATTERY APPLICATION. [J]. Acta Polymerica Sinica (12):1476-1482(2013)
DOI：

Yue Ding, Li-hua Wang, Xu-tong Han. THE PREPARATION AND PROPERTIES OF SULFONATED POLY(ETER ETHER KETONE) MEMBRANES FOR VANADIUM REDOX FLOW BATTERY APPLICATION. [J]. Acta Polymerica Sinica (12):1476-1482(2013) DOI： 10.3724/SP.J.1105.2013.13108.

摘要

采用浓硫酸为磺化剂，制备不同磺化度下的聚醚醚酮（PEEK）膜，研究不同磺化度下SPEEK膜的离子交换容量、面电阻、含水量、钒离子渗透率等参数，并选取磺化度为60%的膜进行单电池性能测试.结果表明，XRD测试显示SPEEK的结晶性下降，随着磺化度的升高，离子交换容量增加，含水量升高，钒离子渗透率升高.磺化度为60%的SPEEK膜（SPEEK60）相比Nafion117拥有更低的钒离子渗透率，离子选择性为Nafion117的10倍.在单电池的测试系统中，SPEEK60具有较高的库伦效率（CE）和能量效率（EE），在自放电测试中，SPEEK60自放电时间为Nafion117的2.5倍，通过循环测试隔膜性能稳定，充放电比较理想.SPEEK膜有希望成为新型离子交换膜应用于全钒液流电池中.

Abstract

Sulfonated poly(ether ether ketone) (SPEEK) membranes with different degrees of sulfonation (DS) were fabricated by sulfonation of poly(ether ether ketone) (PEEK) in the concentrated H2SO4 (ca. 98%).Their parameters were obtained and reported

such as the ion exchange capacity (IEC)

area resistance

water uptake and the vanadium ion permeability.The SPEEK membrane with DS of 60% was selected for the vanadium redox flow battery test.It was observed the crystallization of SPEEK decreased

and the ion exchange capacity

water uptake

vanadium ion permeability increased with the DS of SPEEK membranes.The membrane with DS of 60%(SPEEK60) possessed lower permeability of VO2+ ions than that of Nafion117 membrane

the ion selectivity was ten times that of Nafion117 membrane.The VRB single cell with SPEEK60 membrane showed higher coulombic efficiency (CE) and energy efficiency (EE) compared to that with Nafion117.In the self-charge test

the time of SPEEK60 membrane was 2.5 times that of Nafion117 membrane.The performance of VRB with SPEEK membrane can be maintained after cycles test.The SPEEK membrane has a promising prospect for application in VRB.

关键词

离子交换膜磺化聚醚醚酮钒离子渗透率电池效率

Keywords

Ion exchange membraneSulfonated poly(ether ether ketone)Vanadium ion permeabilityBattery efficiency

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Related Institution

Stae Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University

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