Pengaruh Variasi Massa Aluminium Pada Katoda Bebas Kobalt LiNi0.9MnyAlz (Li-NMA)(z = 0.01, 0.03, 0.05) Terhadap Performa Elektrokimia Baterai Ion Litium

Gunawan, Elsanti Anggraini (2022) Pengaruh Variasi Massa Aluminium Pada Katoda Bebas Kobalt LiNi0.9MnyAlz (Li-NMA)(z = 0.01, 0.03, 0.05) Terhadap Performa Elektrokimia Baterai Ion Litium. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Seiring dengan perkembangan teknologi yang semakin pesat, baterai kini kerap digunakan karena kemampuan penyimpanan energi yang lama, salah satunya baterai ion litium. Baterai ion litium berbasis nikel umumnya memiliki kandungan unsur kobalt. Kobalt dapat membantu meningkatkan kapasitas spesifik baterai ion litium, tetapi kobalt merupakan logam yang mahal dan memiliki ketersediaan yang terbatas. Sebagai alternatif, dibutuhkan penelitian mengenai baterai ion litium bebas kobalt Nickel Manganese Aluminium Oxide (NMA). Kombinasi aluminium dan mangan pada katoda NMA menggantikan posisi kobalt pada katoda NMC (Nickel Manganese Cobalt Oxide) dan NCA (Nickel Cobalt Alumunium Oxide) untuk mengurangi ketergantungan pada kobalt. Pada penelitian ini dilakukan proses sintesis katoda NMA dengan variasi massa aluminium sebanyak 1% (NMA 991), 3% (NMA 973), 5% (NMA 955). Proses sintesis dilakukan dengan metode kopresipitasi dan dilanjutkan proses kalsinasi di dalam tube furnace pada temperatur 750oC dengan holding selama 12 jam dialiri gas oksigen. Kemudian dilanjutkan dengan proses pembuatan slurry katoda NMA dengan perbandingan 80 (NMA) : 10 (Carbon Black) : 10 (PVDF). Slurry katoda NMA di-coating di atas foil aluminium dan di-assembly dengan baterai tipe CR2032. Berdasarkan hasil pengujian karakterisasi, ketiga variasi katoda NMA didapatkan hasil sintesis yang terbentuk dengan baik dan memiliki struktur hexagonal. Berdasarkan hasil pengujian elektrokimia, didapatkan performasi elektrokimia paling baik pada katoda NMA 973 ditunjukkan dengan jarak puncak redox yang berdekatan (3,7V/3,6V), nilai impedansi paling kecil (229,69 Ω cm-2), dan kapasitas spesifik paling tinggi sebesar 17,22 mAh/g pada cycle 2 dan 2,59 mAh/g pada cycle 20.
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Developments in technologies have played an important role in our existence. Batteries are now often used as an energy source, even for electric vehicles (EV). One of the most used batteries with long-term cycle energy storage is the lithium-ion battery. Cobalt is believed to increasing the specific capacity of a lithium ion battery. However, as one of the essential cathode materials in lithium-ion batteries, cobalt is a scarce and expensive metal. As an alternative, further research are needed in cobalt-free lithium ion batteries specifically Nickel Manganese Aluminum Oxide (NMA). The combination of aluminum and manganese in NMA cathode will substitute cobalt for NMC cathode (Nickel Manganese Cobalt Oxide) and NCA (Nickel Cobalt Aluminum Oxide) to reduce cobalt usage in lithium-ion batteries. In this work, NMA cathodes were synthesized with the aluminum mass variation of 1% (NMA 991), 3% (NMA 973), and 5% (NMA 955). The cathodes were synthesized through the coprecipitation method and continued with the calcination process in a tube furnace at 750o C under a flowing oxygen atmosphere for 12 hours. The final products then made into cathode slurries consist of the weight ratio of 80 (NMA): 10 (carbon black): 10 (PVDF). The cathode slurries are coated in aluminum foil and assembled into 2032 coin cells. The result of the precursor’s characterization test obtained a well-formed synthesis result and exhibit a hexagonal lattice structure. As the result of the cathode’s electrochemical performance, NMA 973 cathode achieved the best electrochemical performance with the nearest redox peak (3,7V/3,6V), the smallest impedance (229,69 Ω cm-2), and the highest specific capacity of 17,22 mAh/g after 2 cycle and 2,59 mAh/g after 20 cycle

Item Type:	Thesis (Other)
Additional Information:	RSMt 621.312 42 Gun p-1 2022
Uncontrolled Keywords:	Baterai Ion Litium, Katoda Berbasis Nikel, Katoda NMA, Kalsinasi, Aluminium, Lithium Ion Battery, Cobalt-Free Cathode, NMA Cathode, Calcination,
Subjects:	T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	11 Feb 2025 03:13
Last Modified:	11 Feb 2025 03:13
URI:	http://repository.its.ac.id/id/eprint/118629

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