Utoyo, Ega Bonansyah Utoyo (2026) Pengembangan Sistem Penyimpan Energi Termal Berbasis Komposit Tanah Liat–Rgo Biomassa Untuk Aplikasi Energi Berkelanjutan. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini mengembangkan material penyimpan energi termal (Thermal energy storage, TES) berbasis komposit tanah liat–rGO dari biomassa ampas tebu sebagai alternatif material yang murah dan berkelanjutan. rGO disintesis melalui pirolisis pada 900 °C, kemudian dilanjutkan dengan sonikasi dan pengeringan. Komposit difabrikasi dengan variasi komposisi tanah liat:rGO sebesar 100:0; 75:25; 50:50; 25:75; dan 0:100 (% berat), lalu dipadatkan pada tekanan 50 MPa dan disinter pada 700 °C. Konduktivitas termal sampel 100% tanah liat tergolong rendah dan menurun seiring kenaikan temperatur, sedangkan sampel 100% rGO menunjukkan konduktivitas tertinggi. Pada material komposit, komposisi 25:75 memberikan peningkatan konduktivitas termal paling signifikan akibat terbentuknya jaringan rGO yang lebih terhubung. Nilai kapasitas panas spesifik (cp) meningkat dari 0,60 menjadi 1,19 J/g·K seiring bertambahnya fraksi rGO yang menegaskan peningkatan kemampuan penyimpanan panas sensibel. Analisis TGA menunjukkan stabilitas massa cenderung menurun dengan meningkatnya fraksi rGO, tetapi matriks tanah liat meningkatkan residu akhir dan membantu meredam degradasi rGO.
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This study develops a thermal energy storage (TES) material based on a clay–rGO composite derived from sugarcane bagasse biomass as a low-cost and sustainable alternative. rGO was synthesized via pyrolysis at 900 °C, followed by sonication and drying. The composites were fabricated with clay:rGO compositions of 100:0, 75:25, 50:50, 25:75, and 0:100 (wt%), then compacted at 50 MPa and sintered at 700 °C. The thermal conductivity of the 100% clay sample was low and decreased with increasing temperature, whereas the 100% rGO sample exhibited the highest thermal conductivity. For the composites, the 25:75 composition showed the most significant increase in thermal conductivity due to the formation of a more interconnected rGO network. The specific heat capacity (cp) increased from 0.60 to 1.19 J/g·K with increasing rGO fraction, confirming the improved sensible heat storage capability. TGA analysis indicated that mass stability tended to decrease as the rGO fraction increased; however, the clay matrix increased the final residue and helped mitigate rGO degradation.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Ampas Tebu, Energi Berkelanjutan, Komposit Tanah Liat–rGO, Penyimpanan Energi Termal Clay–rGO Composites, Sugarcane Bagasse, Thermal Energy Storage, Sustainable Energy |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC173.4.C63 Composite materials |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis |
| Depositing User: | Ega Bonansyah Utoyo |
| Date Deposited: | 02 Feb 2026 01:01 |
| Last Modified: | 02 Feb 2026 01:01 |
| URI: | http://repository.its.ac.id/id/eprint/131453 |
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