Pengaruh Variasi Penambahan Lithium Fluoride Pada Liti2(PO4)3 Sebagai Solid Electrolyte Baterai Ion Lithium

Afif, Muhammad Rizal (2019) Pengaruh Variasi Penambahan Lithium Fluoride Pada Liti2(PO4)3 Sebagai Solid Electrolyte Baterai Ion Lithium. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu tantangan dalam penggunaan baterai saat ini adalah mudah terbakarnya komponen elektrolit. Solusi terkini yaitu menggunakan solid electrolyte. Pada penelitian ini dilakukan sintesis LiTi2(PO4)3 (LTP) dengan variasi penambahan lithium fluoride (LiF) untuk mengetahui pengaruhnya terhadap morfologi dan performa material sebagai solid electrolyte. Penambahan LiF dilakukan dengan variasi 0%, 5% dan 10%wt dari LTP. Proses sintesis menggunakan metode wet solid state reaction dengan mencampurkan Li2CO3, TiO2 dan NH4H2PO4 kedalam ball mill. Kemudian dikalsinasi pada temperatur 900oC selama 12 jam sebelum dan sesudah ditambahkan LiF. Hasil penelitian menunjukan bahwa terbentuk 2 fasa, yaitu fasa Nasicon (LiTi2(PO4)3) dengan struktur rhombohedral dan fasa sekunder berupa fasa Olivine (LiTiPO5) dengan struktur orthorombik pada penambahan 5% dan 10%wt LiF. Semakin besar konsentrasi LiF yang ditambahkan, maka volume sel menurun sedangkan ukuran kristal, ukuran partikel dan densitas material semakin besar. Begitu pula dengan morfologi material semakin homogen dan berbentuk segi empat sempurna yang menandakan nilai kristalitas meningkat. Nilai performa material terbaik didapatkan pada sampel LTP 2, penambahan LiF sebesar 10%wt, memiliki konduktivitas ionik tinggi sebesar 4,77 10-4 S cm-1 namun memiliki konduktivitas elektron rendah sebesar 7,24 10-6 S cm-1.
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One of the challenges in battery usage today is the flammable electrolyte. The latest solution is to use solid electrolyte. In this study, LiTi2(PO4)3 (LTP) was synthesized by varying the addition of lithium fluoride (LiF) to determine its effect on the morphology and performance of the material as solid electrolyte. The addition of LiF is done with variations of 0%, 5% and 10%wt of LTP. The synthesis process uses wet solid state reaction method by mixing Li2CO3, TiO2 and NH4H2PO4 into a ball mill. Then calcined at 900oC for 12 hours before and after LiF was added. The results showed that 2 phases were formed, namely Nasicon phase (LiTi2(PO4)3) with rhombohedral structure and secondary phase in the form of Olivine phase (LiTiPO5) with orthorombic structure at addition of 5% and 10%wt LiF. The greater the concentration of LiF added, the cell volume decreases while the crystallite size, particle size and material density increase. Similarly, the morphology of the material is increasingly homogeneous and more perfect rectangle indicating the value of crystallinity increases. The best material performance value is obtained in the sample LTP 2, with addition of 10%wt LiF, has high ionic conductivity at 4,77 10-4 S cm-1 but has a low electron conductivity at 7,24 10-6 S cm-1.

Item Type:	Thesis (Other)
Additional Information:	RSMt 621.312 423 Afi p-1 2019
Uncontrolled Keywords:	Solid Electrolyte, LiTi2(PO4)3, LiF, Konduktivitas
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2941 Storage batteries T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK452 Electric apparatus and materials
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Rizal Afif
Date Deposited:	26 Apr 2023 04:02
Last Modified:	26 Apr 2023 04:02
URI:	http://repository.its.ac.id/id/eprint/65507

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