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题名: Synthesis and characteristics of sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK) for direct methanol fuel cell (DMFC)
作者: Gu, Shuang;  He, Gaohong;  Wu, Xuemei;  Li, Chennan;  Liu, Hongjing;  Lin, Chang;  Li, Xiangcun
关键词: proton exchange membrane ;  sulfonation ;  poly(phthalazinone ether sulfone ketone) ;  direct methanol fuel cell ;  fuel cell
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2006-09-15
DOI: 10.1016/j.memsci.2006.03.021
卷: 281, 期:1-2, 页:121-129
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK) for proton exchange membranes were prepared by sulfonation of PPESK using fuming acid and sulfuric acid agent. The separation of SPPESK was carried out by precipitating in ether and then in acetone. The degree of sulfonation (DS) was determined by ion exchange or conductimetric titration method. The FTIR study and (1)H NMR analysis were used to confirm the SPPESK has been synthesized successfully. Membranes were cast from SPPESK solution in NMP. Thermal stability, water uptake and swelling rate, proton conductivity and methanol permeability of SPPESK membranes were studied. SPPESK have excellent thermal stability (DS = 28-132%; T(d): 300-305 degrees C; Tg: 287-301 degrees C), appropriate water uptake (<= 78%) and swelling rate (<= 37%) when DS <= 81%. The conductivity of SPPESK membranes increases with DS and temperature. The conductivity of SPPESK 81% and SPPESK 91% reach 1.3 and 3.0 x 10(-2) S/cm at 80 degrees C, near to that of Nation115 (3.1 x 10(-2) S/cm) at the same conditions. The apparent activation energies of the conductivity Delta E(a) of membranes with SPPESK 81% and SPPESK 91% are 20.5 and 22.20/mol, respectively. Those values are higher than that of Nafion115 (10.8kJ/mol). SPPESK membranes exhibit methanol permeability at 15 degrees C from 1.3 x 10(-7) to 9.7 x 10(-8) cm(2)/s depending on the DS from 0 to 99%, those values are reduced by a factor of 32-42 for that of Nation 115 membrane (4.2 x 10(-6) cm(2)/s) at the same conditions. All the above properties of SPPESK (especially DS 60-80%) indicate this material is promising for possible use in proton exchange membrane fuel cells, especially in direct methanol fuel cells. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: PROTON-EXCHANGE MEMBRANES ;  CONDUCTING POLYMERS ;  ACID ;  POLYBENZIMIDAZOLE ;  POLYIMIDES ;  BLENDS
语种: 英语
WOS记录号: WOS:000240207800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140201
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, State Key Lab Fine Chem, R&D Ctr Membrane Sci & Technol, Dalian 116012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Gu, Shuang,He, Gaohong,Wu, Xuemei,et al. Synthesis and characteristics of sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK) for direct methanol fuel cell (DMFC)[J]. JOURNAL OF MEMBRANE SCIENCE,2006,281(1-2):121-129.
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