کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7718091 1497482 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bounding material properties for automotive storage of hydrogen in metal hydrides for low-temperature fuel cells
ترجمه فارسی عنوان
خصوصیات مواد محدود برای ذخیره سازی خودرو هیدروژن در هیدرودهای فلزی برای سلول های سوختی کم دما
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Metal hydride material properties required for on-board hydrogen storage for use with automotive polymer electrolyte fuel cell systems are discussed. Thermodynamic relationships between enthalpy and entropy of sorption are determined such that the storage system can be thermally integrated with the fuel cell system and be refueled at reasonable H2 supply pressures of 50-200 atm. Simple criteria are developed for specifying minimum discharge kinetic rates needed to satisfy hydrogen demand on automotive duty cycles. Simple criteria are also developed for specifying minimum charge kinetic rates needed to refuel metal hydride tanks in reasonable time. Accessible intrinsic capacity and bulk density of the metal hydride are determined for the storage system to achieve system level targets for gravimetric and volumetric capacities. Based on these analyses, it is recommended that the storage media properties be measured on samples prepared by mixing the metal hydride with a high thermal conductivity material, and compacted to 600 kg m−3 bulk density. The compact should have a minimum effective thermal conductivity of 8.5 W m−1 K−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 27, 12 September 2014, Pages 14874-14886
نویسندگان
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