Synthesis and Characterization of Chitosan Membranes for Application in PEMFC

Synthesis and Characterization of Chitosan Membranes for Application in PEMFC

Available online at www.sciencedirect.com Procedia Engineering 44 (2012) 850 – 851 (XURPHPEUDQH&RQIHUHQFH >3@ 6\QWKHVLVDQGFKDUDFWHUL]...

144KB Sizes 0 Downloads 144 Views

Available online at www.sciencedirect.com

Procedia Engineering 44 (2012) 850 – 851

(XURPHPEUDQH&RQIHUHQFH >3@ 6\QWKHVLVDQGFKDUDFWHUL]DWLRQRIFKLWRVDQPHPEUDQHVIRUDSSOLFDWLRQLQ3(0)&     5**RQ]iOH] &$&RUWpV .+HUQiQGH] 36LIXHQWHV    (6,4,(,310H[LFR &,,7(&,310H[LFR 7KHSURWRQH[FKDQJHPHPEUDQHLVDIXQGDPHQWDOSDUWRIWKHIXHOFHOO8SWRQRZRQO\1DILRQŠ IURP 'XSRQWŠ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ȝ6FP 6LJPD$OGULFK7(26ZLWKSXULW\DQG6LJPD$OGULFKDQK\GURXV HWKDQROZHUHXVHG$FWLYDWLRQRIPHPEUDQHVZDVSHUIRUPHGE\PHDQVRILQRUJDQLFZDVKIRU KRXULQDYROVROXWLRQRI+2DWƒ&RUJDQLFZDVKIRUKRXUDWƒ&ZLWKGLVWLOODWHZDWHU VXOIRQDWLRQ IRU  KRXU DW ƒ& ZLWK 0 +62 DQG GHLRQL]HG ZDWHU IRU  KRXU DW ƒ& 0HFKDQLFDO SURSHUWLHV ZHUH PHDVXUHG ZLWK D 1DQRLQGHQWDWLRQ WHVWHU 1+7 &60 ,QVWUXPHQWV ZLWK D %HUNRYLFK GLDPRQG WLS LQ D UDQJH RI  1 ,QIUDUHG VSHFWUD ZHUH DFTXLUHG LQ D )7,5  1LFROHWLQDUDQJHRIFP DQGWKLFNQHVVZDVPHDVXUHGZLWKD0LWXWR\RPLFURPHWHU  ,QRUGHUWRNQRZWKHSURWRQFRQGXFWLYLW\RIWKHFKLWRVDQPHPEUDQHDQGWRFRPSDUHZLWK1DILRQŠ  WKH WZRSRLQWSUREH FRQGXFWLYLW\ FHOO ZHUH SURYHG ZLWK D SRWHQFLRVWDWH 3$5 ZLWK D FHOOKRPHPDGHWKHPDWHULDORIHOHFWURGHVLQDILUVWSKDVHZDVVWDLQOHVVVWHHO7KHPHPEUDQH VDPSOHV ZHUH VDQGZLFKHG EHWZHHQ WKH WZR 7HIORQŠ EORFNV WKDW ZHUH SUHVVHG WRJHWKHU WR HQVXUHJRRGHOHFWURGHVPHPEUDQHFRQWDFW7KHFRQGXFWLYLW\ZDVPHDVXUHGLQWKHORQJLWXGLQDO GLUHFWLRQ WR PLQLPL]H WKH HOHFWURGHV UHVLVWDQFH 7KH LPSHGDQFH VSHFWUD RI PHPEUDQHV ZHUH REWDLQHGDWRSHQFLUFXLWSRWHQWLDO (RF 7KHDPSOLWXGHRIWKHVLJQDOSHUWXUEDWLRQZDVP9WKH IUHTXHQF\UDQJHVFDQQHGZDVIURP+]WR+]7KHPHDVXUHPHQWVZHUHSHUIRUPHGDW ƒ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

1877-7058 © 2012 Published by Elsevier Ltd. doi:10.1016/j.proeng.2012.08.596

R.G. Gonzuc0u8730 ’b0lez et al. / Procedia Engineering 44 (2012) 850 – 851



 

)RUFH P1



 





SXUH FKLWRVDQ 

 







3HQHWUDWLRQ QP



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

$PLGH,,,  6L2+ +2

7UDQVPLWDQFH



$Vν 6L26L

 SXUH FKLWRVDQ 1+ &+ 2+

& 2 &2&

$Vν 1+ &+ &1 





:DYHQXPEHUFP

& 2 





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

851