Acid-Base Membranes for Solid Polymer Fuel Cells

被引:2
|
作者
Emelyanov, A. I. [1 ]
Lebedeva, O. V. [2 ]
Malakhova, E. A. [3 ]
Raskulova, T. V. [3 ]
Pozhidaev, Yu. N. [2 ]
Verkhozina, Yu. A. [2 ]
Larina, L. I. [1 ]
Korzhova, S. A. [1 ]
Prozorova, G. F. [1 ]
Pozdnyakov, A. S. [1 ]
机构
[1] Russian Acad Sci, Favorsky Inst Chem, Siberian Branch, Irkutsk 664033, Russia
[2] Irkutsk Natl Res Tech Univ, Irkutsk 664074, Russia
[3] Angarsk State Tech Univ, Angarsk 665835, Russia
基金
俄罗斯基础研究基金会;
关键词
poly(1-vinyl-1; 2; 4-triazole); phenol-2; 4-disulfonic acid; membrane conductivity; ion exchange capacity; water uptake; PROTON-EXCHANGE MEMBRANES; ELECTROLYTE MEMBRANES; DOPED POLY(1-VINYL-1,2,4-TRIAZOLE); HYBRID MEMBRANES; POLYBENZIMIDAZOLE; CONDUCTIVITY; ETHER; KETONE); SILICA;
D O I
10.1134/S2517751621030021
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Acid-base membranes have been prepared by mixing a 1-vinyl-1,2,4-triazole polymer (PVT) with phenol-2,4-disulfonic acid (PDSA) in the presence of products of intermolecular crosslinking of polyvinyl alcohol and oxalic acid. The composition and structure of the membranes have been studied by elemental analysis and IR and NMR spectroscopy techniques. The membranes are thermally stable up to 245 degrees C. Their electrical conductivity increases from 6.23 mS cm(-1) (PVT-PDSA 80 : 20 wt % membrane) to 59.8 mS cm(-1) (PVT-PDSA 10 : 90 wt %) with increasing temperature and phenol-2,4-disulfonic acid content at a temperature of 80 degrees C and a humidity of 75%. The activation energy of the membranes ranges from 19.5 to 38.2 kJ/mol, respectively. The water uptake of membranes, which determines, among other things, the electrical conductivity, depends on the PVT content: the water uptake decreases from 200 to 50% with an increase in its amount in the membrane composition from 9.1 to 81.30 mol %, leading to a decrease in electrical conductivity along with a decrease in the proportion of PDSA.
引用
收藏
页码:147 / 154
页数:8
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