کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7717163 1497473 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural, hydrogen storage, and electrochemical properties of Laves phase-related body-centered-cubic solid solution metal hydride alloys
ترجمه فارسی عنوان
ذخیره سازی سازه ای، ذخیره سازی هیدروژنی و خواص الکتروشیمیایی آلیاژهای فلزی هیدرید جامد محلول جامد مکعبی لواس
کلمات کلیدی
هیدروژن جذب آلیاژها، الکترودهای هیدرید فلزی، آلیاژهای فاز لواش، آلیاژهای مکعبی بدن، جداسازی فاز،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Structure, gaseous phase hydrogen storage, and electrochemical properties of a series of Laves phase-related BCC solid solution metal hydride alloys with BCC/C14 ratios ranging from 0.09 to 8.52 were studied. Some properties are correlated to the phase abundance and V-content in the alloy with monotonic evolutions, for example, lattice constant, phase abundance, and hydrogen storage pressure. Other properties such as gaseous phase capacities, PCT hysteresis, high-rate dischargeability, and bulk hydrogen diffusion correlate better with the C14 phase crystallite size, which are considered to be more related to the synergetic effect between main and secondary phases. In contrast with conventional metal hydride alloys used in NiMH batteries, the electrochemical discharge capacities of these alloys are not between the maximum and the reversible hydrogen storage measured in the gaseous phase. The current study's alloys have electrochemical capacities that are insensitive to composition but have much room for improvement, with high-rate dischargeabilities that are superior compared to other commercially available alloys. With further research, these alloys show potential for high-rate battery applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 36, 12 December 2014, Pages 21489-21499
نویسندگان
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