KARAKTERISASI MATERIAL KATODA NMC 811 BERBAHAN BAKU LOKAL DENGAN METODE CO-PRECIPITATION DENGAN VARIASI SUHU SINTERING

Bonde, Reva carlos julitho (2026) KARAKTERISASI MATERIAL KATODA NMC 811 BERBAHAN BAKU LOKAL DENGAN METODE CO-PRECIPITATION DENGAN VARIASI SUHU SINTERING. Bachelor thesis, Kalimantan Institute of Technology.

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Abstract

Peningkatan kebutuhan baterai litium-ion sebagai sumber energi ramah lingkungan mendorong pengembangan material katoda berkapasitas tinggi, salah satunya adalah LiNi0.8Mn0.1Co0.1O2 (NMC 811). Pada negara indonesia merupakan salah satu negara yang memiliki potensi yang cukup besar dalam pengembangan material katoda berbahan baku lokal, karena ketersediaan sumber daya nikel, mangan, dan kobalt yang cukup melimpah. Namun, variasi kemurnian bahan baku lokal dapat mempengaruhi pembentukan struktur kristal dan kualitas material NMC 811. Oleh karena itu, pada penelitian ini bertujuan untuk mengkaji pengaruh variasi suhu sintering terhadap struktur kristal, kemurnian fase, dan morfologi material katoda NMC 811 berbahan baku lokal yang disintesis menggunakan metode co-precipitation. Prekursor (Ni0.8Mn0.1Co0.1)CO3 yang disintesis dengan metode co-precipitation dengan variasi suhu sintering yaitu, 750°C, 850°C, dan 900°C. Kemudian dikalsinasi dengan penambahan LiOH dan dilakukan karakterisasi material menggunakan X-ray Diffraction (XRD) digunakan untuk mengidentifikasi fase kristal pada prekursor dan tingkat kristalinitas, dengan hasil XRD menunjukan adanya struktur berlapis α-NaFeO2 dengan grup ruang R-3M. Sampel dengan variasi suhu 900oC memiliki rasio intensitas I(003)/I(004) tertinggi sebesar 1,69 yang mengindikasikan tingkat cation mixing paling rendah dan rasio c/a. Fourier Transform Infrared Spectroscopy (FTIR) untuk mendeteksi gugus fungsi dan sisa senyawa pengotor, dengan hasil FTIR yaitu terbentuknya keberadaan gugus O–H, H–O–H, C–O, dan M-O. serta Scanning Electron Microscopy (SEM) untuk mengamati morfologi. Hasil morfologi dari pengujian SEM menunjukan variasi suhu 850oC merupakan kondisi paling optimum karena menghasilkan karakteristik struktur kristal yang baik, serta memiliki morfologi aglomerasi yang cukup tinggi tetapi masih seragam, dan yang paling mendekati material NCM 811 lab grade

Item Type: Thesis (Bachelor)
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TP Chemical technology
Divisions: Jurusan Ilmu Kebumian dan Lingkungan > Teknik Material dan Metalurgi
Depositing User: Reva Reva
Date Deposited: 21 Jul 2026 06:51
Last Modified: 21 Jul 2026 06:51
URI: http://repository.itk.ac.id/id/eprint/27924

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