MARC details
| 000 -LEADER |
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| fixed length control field |
02249nam a2200301Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250625124707.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-7749 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
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| Title |
Mass transport of direct methanol fuel cell species in sulfonated poly(ether ether ketone)membranes |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Electrochimica Acta, 51(18), p.3699-3706, 2006 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Homogeneous membranes based on sulfonated poly(ether ether ketone)(sPEEK)with different sulfonation degrees (SD)were prepared and characterized. In order to perform a critical analysis of the SD effect on the polymer barrier and mass transport properties towards direct methanol fuel cell species, proton conductivity, water/methanol pervaporation and nitrogen/oxygen/carbon dioxide pressure rise method experiments are proposed. This procedure allows the evaluation of the individual permeability coefficients in hydrated sPEEK membranes with different sulfonation degrees. NafionR 112 was used as reference material. DMFC tests were also performed at 50 .C. It was observed that the proton conductivity and the permeability towards water, methanol, oxygen and carbon dioxide increase with the sPEEK sulfonation degree. In contrast, the SD seems to not affect the nitrogen permeability coefficient. In terms of selectivity, it was observed that the carbon dioxide/oxygen selectivity increases with the sPEEK SD. In contrast, the nitrogen/oxygen selectivity decreases. In terms of barrier properties for preventing the DMFC reactants loss, the polymer electrolyte membrane based on the sulfonated poly(ether ether ketone)with SD lower or equal to 71 |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
SULFONATED POLY(ETHER ETHER KETONE)(SPEEK) |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
NAFION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
CONDUCTIVITY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
PERVAPORATION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
PRESSURE RISE METHOD |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
PERMEABILITY COEFFICIENTS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
DIRECT METHANOL FUEL CELL |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Silva, V.S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Ruffmann, B. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Vetter, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Boaventura, M. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Mendesb, A.M. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1ZK2ukEbBEK2cWaGtAPo9RKWKQqQSxwGN/view?usp=drivesdk">https://drive.google.com/file/d/1ZK2ukEbBEK2cWaGtAPo9RKWKQqQSxwGN/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
