کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5431880 1508826 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural evolution of hydrothermal carbon spheres induced by high temperatures and their electrical properties under compression
ترجمه فارسی عنوان
تکامل ساختاری کره های کربن هیدروترمال ناشی از درجه حرارت بالا و خواص الکتریکی آنها تحت فشرده سازی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

Graphitization of carbon materials plays an important role their microstructures and conductivity, and then influences their applications. However, the graphitization of hydrothermal carbon spheres (CSs) has not systemically investigated heretofore. The CSs with 60-250 nm in diameter were prepared from aqueous glucose solution by hydrothermal carbonization, and were treated at the high temperatures of 900-2900 °C in Ar atmosphere. The heat-treated CSs have demonstrated that their surface structure, microstructure, porosity, and polygonization strongly depend on the treatment temperatures. These results are supported by scanning and transmission electron microscopes, energy dispersive x-ray spectrometry, Raman, X-ray diffraction, and BET surface area analyses. We also investigated the electrical properties of the heat-treated CSs under compression, and found that the resistivity of the carbon particles is very dependent on their surface, microstructure, density, and polygonization. Therefore, high temperature treatment is an effective method to tailor the structure, morphology, and property of the hydrothermal CSs.

High-temperature-induced structural evolution of hydrothermal carbon spheres.447

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 121, September 2017, Pages 426-433
نویسندگان
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