Swastika, Puri Olyvia (2019) Efek Variasi Fraksi Karbon Sebagai Pelapis Dalam Pembentukan Partikel Komposit LiFeSi0.03 P0.97O4/C Terhadap Konduktivitas Listrik. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
01111540000055-Undergraduate_theses.pdf Download (2MB) | Preview |
Abstract
Penelitian mempelajari tentang pengaruh penambahan variasi fraksi karbon wt% terhadap distribusi ukuran partikel dan konduktifitas listrik. Sintesis material komposit dilakukan dengan menggunakan metode solid state menggunakan high ball mill energy. Pada penelitian ini bahan dasar yang digunakan adalah Fe2O3, Li2CO3, (NH4)2HPO4, SiO2, dan glukosa sebagai bahan dasar karbon. Penelitian dilakukan dengan varaisi fraksi karbon 0 wt%, 7 wt%, 9 wt%, dan 11 wt%. Temperatur kalsinasi yang digunkan untuk membentuk prekusor LFP adalah 7000 dengan waktu penahan 5 jam. Karakterisasi yang digunakan adalah XRD, SEM, PSA, dan EIS. Hasil analisis XRD menunjukkan bahwa terbentuk fasa LiFePO4 dan terbentuk dua fasa pada sampel 0 wt% yaitu LiFePO4 dan Li3Fe2PO4. Hasil SEM dan PSA menunjukkan bahwa semakin bertambahnya fraksi karbon wt% ukuran partikel semakin menurun akan tetapi pada sampel 11 wt% mengalami kenaikan ukuran partikel karena terjadinya aglomerasi pada sampel. Hasil uji konduktivitas menunjukkan bahwa nilai konduktivitas pada prekusor LiFeSi0.03P0.97O4/C dengan variasi fraksi karbon 0wt% sebesar 0,018x10-7 S/cm, variasi fraksi karbon 7wt% sebesar 0,002x10-7 S/cm, variasi fraksi karbon 9wt% sebesar 3,518x10-7 S/cm-, variasi fraksi karbon 11wt% sebesar 0,133X10-7 S/cm. Dengan nilai konduktifitas tertinggi pada prekusor LiFeSi0.03P0.97O4/C dngan variasi Fraksi karbon 9wt%.
================================================================================================================================
This research study of the influence variation carbon fraction as coating particle to dimension size electrical conductivity. The process of particle composite using solid state process by high energy ball milling. The row materials in this research are Fe2O3, Li2CO3, (NH4)2HPO4, SiO2, and glucose as carbon coating. The variation of carbon are 0wt%, 7wt%, 9wt%, and 11wt%. The calcination temperature to form the LFP precursor is 7000 with a holding time of 5 hours. The equipments to caracteries the sampel are XRD, SEM, PSA, and EIS. The results anlysis of the XRD have shown the main phase as olivine (LiFePO4) but without coating of the particle greated twi phase LiFePO4 and Li3Fe2PO4. The increasting carbon fraction tend to decreasing dimension of particle that indicated aglomeration phenomena. results of SEM and PSA showed that the increasing wt% carbon fraction decreased particle size but in the 11 wt% sample the particle size increased due to the agglomeration of the sample. The conductivity test results showed that the conductivity values of the LiFeSi0.03P0.97O4/C precursor with a variation of 0wt% carbon fraction were 0.018x10-7 S / cm, variations in carbon fraction of 7wt% were 0.002x10-7 S / cm, variations in carbon fraction 9wt% in the amount of 3,518x10-7 S/cm, the variation of carbon fraction 11wt% is 0,133X10-7 S/cm. With the highest conductivity value in the precursor LiFeSi0.03P0.97O4/C with a variation of 9wt% carbon fraction.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSFi 620.118 Swa e-1 2019 |
| Uncontrolled Keywords: | Coating Carbon, LiFePO4, Solid state, EIS |
| Subjects: | Q Science > QC Physics > QC173.4.C63 Composite materials Q Science > QC Physics > QC610.3 Electric conductivity |
| Divisions: | Faculty of Natural Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Swastika Puri Olyvia |
| Date Deposited: | 05 Jun 2023 02:01 |
| Last Modified: | 05 Jun 2023 02:01 |
| URI: | http://repository.its.ac.id/id/eprint/65161 |
Actions (login required)
 |
View Item |