Pengaruh Temperatur Kalsinasi Terhadap Gugus fungsi, Struktur Mikro, dan Kerapatan dislokasi pada Material Katoda Baterai LiNiO2 = Effect of Calcination Temperature on Functional Groups, Microstructure, and Dislocation Density in LiNiO2 Battery Cathode Materials

Budiarto, Budiarto (2022) Pengaruh Temperatur Kalsinasi Terhadap Gugus fungsi, Struktur Mikro, dan Kerapatan dislokasi pada Material Katoda Baterai LiNiO2 = Effect of Calcination Temperature on Functional Groups, Microstructure, and Dislocation Density in LiNiO2 Battery Cathode Materials. JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY, 6 (2). pp. 137-154. ISSN 2549-6239

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Abstract

Material katoda baterai merupakan salah satu dari empat faktor penentu kapasitas penyimpanan energy, yang digunakan sebagai sumber daya pada peralatan elektronik. laptop, dan kendaraan listrik. Sintesa material katoda baterai LiNiO2 dengan metode solid state, dan variasi temperatur kalsinasi dari 700 0C, 775 0C, dan 850 0C serta waktu tetap 6 jam. Hasil analisis dengan spektrum FTIR menunjukkan mode getaran berkorelasi dengan getaran unit oktahedral NiO6 dan LiO6 di zona bilangan gelombang 400 - 700 cm−1. Dengan demikian, puncak di sekitar 433 cm−1 disebabkan oleh vibrasi regangan asimetris Li – O pada LiO6 dan vibrasi bending NiO6, yaitu [(Ni – O – Li)], muncul pada 551-603 cm−1. Hasil pengamatan strukturmikro dengan SEM menunjukkan ukuran mikron dengan permukaan tidak merata dan homogen. Komposisi unsur logam Li, dan Ni dianalisis dengan EDXS menunjukkan kandungan logam Li, dan Ni berkurang seiring dengan temperatur kalsinasi bertambah. Hasil pengujian struktur kristal dengan difraktometer sinar-X menunjukkan bahwa dengan tempetartur kalsinasi dinaikkan, rerata diameter kristalit menurun, akan tetapi rerata kerapatan dislokasi meningkat dan rerata regangan kisi mikro juga meningkat (0.4817 % menjadi 15,8079 %) serta pada bidang indeks Miller hkl (102), (104), (210), (108), dan (113). Kata Kunci: katoda baterai LNO; gugus fungsi; strukturmikro; XRD; SEM-EDXS / Battery cathode material is one of the four determinants of energy storage capacity, which is used as a power source in electronic equipment. laptops, and electric vehicles. Synthesis of LiNiO2 battery cathode material by solid state method, and variations in calcination temperature from 700 0C, 775 0C, and 850 0C , as wll as a fixed time of 6 hours. The results of the analysis using the FTIR spectrum showed that the vibration mode correlated with the vibrations of the octahedral units of NiO6 and LiO6 in the wave number zone of 400 - 700 cm−1. Thus, the peak around 433 cm−1 is caused by the Li–O asymmetric strain vibration of LiO6 and the NiO6 bending vibration, namely [(Ni–O–Li)], occurring at 551-603 cm−1. The results of the observation of the microstructure with SEM showed the size of the micron with an uneven and homogeneous surface. The elemental compositions of Li and Ni metals were analyzed by EDXS showing that the metal content of Li and Ni decreased as the calcination temperature increased. The results of the crystal structure test using an X-ray diffractometer showed that with the increase in the calcination temperature, the average diameter of the crystallites decreased, but the average dislocation density increased and the mean micro-lattice strain also increased ( 0.4817% to 15.8079%) and in the Miller hkl index plane. (102), (104), (210), (108), and (113). Keywords: LNO battery cathode; function group; microstructure; XRD; SEM-EDXS

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