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论文类型：期刊论文

发表时间：2017-11-01

发表刊物：IONICS

收录刊物：SCIE、EI、Scopus

卷号：23

期号：11

页面范围：3085-3096

ISSN号：0947-7047

关键字：Anion exchange membrane; Graphene oxide; Guanidinium

摘要：Incorporating nanofillers is an effective method to balance conductivity and mechanical strength of anion exchange membranes (AEMs). In this work, a series of AEMs were prepared via embedding guanidinium-functionalized graphene oxide (GGO) into un-quaternized, diethanolamine-modified polysulfone (HPSf). The improved hydrophilicity of HPSf allows for better compatibility between GGO and polymer and also gives higher water uptake, which is beneficial for facilitating ion transport and alleviating hydroxide attack. AEM of HPSf embedding an optimized amount of GGO (0.88 mmol g(-1)) exhibits the highest conductivity of 11 mS cm(-1) at 30 A degrees C, which is 38% higher than that of pristine PSf-GGO membrane. It also possesses excellent anti-swelling stability (9% swelling ratio at 60 A degrees C). When treated with 1 M NaOH at 60 A degrees C for 120 h, HPSf-GGO-25% experienced a conductivity decay by 25%. Our work provides a route to fabrication of hybrid AEMs with improved interface properties and well-balanced conductivity and robustness.