کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8035910 1518059 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of direct covalent bonding in enhanced heat dissipation property of flexible graphene oxide-carbon nanotube hybrid film
ترجمه فارسی عنوان
نقش پیوند کووالانسی مستقیم در ویژگی افزایش تسریع گرما از فیلم هیبرید نانولوله کربن اکسید گرافن قابل انعطاف
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
The thermal conductivity of graphene oxide/multiwalled carbon nanotube (GO/MWCNT) hybrid films with and without covalent bonding is examined in this study. To fabricate chemically bonded GO/MWCNT hybrid films, chlorinated GO and amino-functionalized MWCNTs are bonded covalently. The mixtures of surface modified GO and MWCNT were filtered and then subjected to hot pressing to fabricate stacked films. Examination of these chemically bonded hybrid films reveal that chlorine-doped GO exhibits enhanced electrical properties because it creates hole charge carriers by attracting the electrons in GO towards chlorine. Enhanced electrical conductivity and low sheet resistance are observed also with increasing MWCNT loadings. On comparing the through-plane thermal properties, the chemically bonded hybrid films were found to exhibit higher thermal conductivity than do the physically bonded hybrid films because of the synergetic interaction of functional groups in GO and MWCNTs in the former films. However, excess addition of MWCNTs to the films leads to an increasing phonon scattering density and a decreased thermal conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 545, 31 October 2013, Pages 116-123
نویسندگان
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