کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6580714 | 1422942 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel form-stable phase change composite with excellent thermal and electrical conductivities
ترجمه فارسی عنوان
یک ترکیب جدید تغییر شکل فاز پایدار با هدایت الکتریکی عالی و حرارتی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Electro-to-heat energy conversion/storage provides a new direction for the development of phase change materials (PCMs). However, conversion rate and energy storage density of the existing PCMs are limited by their low intrinsic electrical and thermal conductivities and poor compressive strength. In this work, a novel form-stable phase change material (FSPCM) has been prepared via ligand replacement followed by the embedment of acetylene black conductive network. The addition of 20â¯wt% acetylene black reduces the resistivity of the polyethylene glycol-based PCM from 107â1012â¯Î©Â·m to 0.3â¯Î©Â·m, while its thermal conductivity is increased by 300%. The resulting conductive composite possesses the ability to store heat at voltage as low as 1.8â¯V and high electro-to-heat conversion efficiency. The composite compressive strength reaches 105 Pa at an ambient temperature of 110â¯Â°C, while the temperature is 60â¯Â°C more than that of phase transition temperature of PCM. Further, the magnitude of the temperature change in the electrothermal conversion curves recorded after 50 solid-liquid phase transition cycles does not exceed 2.0%. The excellent electrical and thermal conductivities as well as good mechanical properties of the synthesized composite suggest a promising route for manufacturing novel materials with high power capacity for thermal storage applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 336, 15 March 2018, Pages 342-351
Journal: Chemical Engineering Journal - Volume 336, 15 March 2018, Pages 342-351
نویسندگان
Haiquan Zhang, Qinrong Sun, Yanping Yuan, Zujing Zhang, Xiaoling Cao,