کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7991601 | 1516141 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Achieving thermoelectric improvement through the addition of a small amount of graphene to CuAlO2 synthesized by solid-state reaction
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
In this work, delafossite CuAlO2 powders with graphene (0.00-0.20â¯wt%) were synthesized by a solid-state reaction method. X-ray diffraction and transmission electron microscope results indicated that graphene was segregated in CuAlO2 as a split phase, such as composite material. A little addition of graphene content reduces the thermal conductivity and increases the carrier concentration because the graphene generates many point defects and aided carrier-phonon scattering. The CuAlO2 with graphene content of 0.05â¯wt% shows the maximum electrical conductivity of 470â¯S/m at 700â¯K. In addition, the maximum value for ZT of 0.0045 was recorded at 575â¯K with the graphene/CuAlO2 composite (0.05â¯wt%). Therefore, in brief, this study has highlighted the benefits of combining delafossite CuAlO2 with a small amount of graphene as a potential route for achieving highly efficient thermoelectric materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 753, 15 July 2018, Pages 630-635
Journal: Journal of Alloys and Compounds - Volume 753, 15 July 2018, Pages 630-635
نویسندگان
Noppanut Daichakomphu, Rachsak Sakdanuphab, Adul Harnwunggmoung, Supree Pinitsoontorn, Aparporn Sakulkalavek,