Phosphorylated graphene oxide-reinforced polybenzimidazole composite membrane for high-temperature proton exchange membrane fuel cell

被引：11

作者：

Zhao, Xuhui ^{[1
]}

Nan, Bohua ^{[2
]}

Lu, Yunhua ^{[1
]}

Zhao, Chunyan ^{[1
]}

Xu, Shiai ^{[1
,3
]}

机构：

[1] East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafin, Shanghai 200237, Peoples R China

[2] Shanghai Aerosp Equipments Mfg Co Ltd, Shanghai 200245, Peoples R China

[3] Qinghai Univ, Sch Chem Engn, Xining 810016, Peoples R China

来源：

JOURNAL OF POLYMER RESEARCH | 2021年 / 28卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Polybenzimidazole; Proton exchange membrane; Phosphorylated graphene oxide; Proton conductivity; Mechanical properties; POLYMER ELECTROLYTE MEMBRANES; POLY(ETHER ETHER KETONE); NANOCOMPOSITE MEMBRANES; SULFONATED POLYIMIDE; CONDUCTIVITY; PERFORMANCE; FABRICATION;

D O I：

10.1007/s10965-021-02846-x

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel phosphorylated graphene oxide (PGO)-reinforced polybenzimidazole (PBI) composite membrane was prepared for high-temperature proton exchange membrane fuel cell (HT-PEMFC). PGO was prepared by phosphorylation of graphene oxide (GO) with phosphoric acid (PA), and its structure was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), energy dispersive spectrometry (EDS), and ion exchange capacity (IEC) measurement. Then, PGO was added into PBI to prepare composite membranes, with excellent oxidation and thermal stability, outstanding mechanical properties, strong PA uptake and high proton conductivity. The PBI composite membrane with 1.5 wt.% of PGO exhibits the highest tensile strength (38.4 MPa) and excellent proton conductivity (17.6 mS center dot cm(-1) at 180 celcius without moisture) after immersion in PA aqueous solution, which is 1.31 and 1.15 times higher than that of pure PBI and PBI/GO composite membranes, respectively. Thus, PGO-reinforced PBI composite membranes have promising applications in HT-PEMFC.

引用

页数：15

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