Saka, Wira Rosadi May (2016) Pengaruh Temperatur Hidrotermal Pada Proses Sintesis Li4ti5o12 Nanowire Terhadap Performa Elektrokimia Baterai Ion Lithium. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Pada penelitian ini telah berhasil dilakukan sintesis
Li4Ti5O12 dengan menggunakan prekusor TiO2 anatase dan NaOH
melalui metode hidrotermal. Penelitian ini dilakukan dengan
menggunakan variasi temperatur hidrotermal, yaitu 180oC, 200oC,
dan 220oC dan waktu holding 18 jam. Hasil uji X-Ray Diffaction
(XRD) menunjukkan bahwa terbentuk dua fasa Li4Ti5O12 dan
TiO2 yang sesuai dengan JCPDS No.00-49-0207. Dari uji
Scanning Electron Microscope (SEM) terlihat struktur morfologi
Li4Ti5O12 berupa nanowire dengan panjang 1 μm-5 μm dan
diameter 11 nm-60 nm. Hasil uji performa elektrokimia
menunjukkan bahwa material Li4Ti5O12 memiliki nilai kapasitas
spesifik terbesar pada temperatur 200oC yang nilainya sebesar
93.222 mAh/g. Hal ini menunjukkan bahwa sampel dengan
temperatur 200oC memiliki nilai ketahanan kapasitas paling baik,
karena memiliki nilai kapasitas spesifik paling tinggi. Pada uji
Electrochemical Impedance Spectroscopy (EIS), nilai Rct
terendah terdapat pada temperatur 220oC sebesar 55.2 Ohm. Hal
ini tidak bersesuaian dengan hasil uji XRD, dimana seharusnya
sampel dengan temperatur 200oC yang memiliki nilai Rct
terendah. Namun, secara keseluruhan, anoda Li4Ti5O12 dengan
temperatur hidrotermal 200oC memiliki potensi besar sebagai material
anoda untuk baterai ion lithium.
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In this research has been successfully synthesized
Li4Ti5O12 by using a precursor TiO2 anatase and NaOH through
hydrothermal method. This research was conducted using
hydrothermal temperature variation, ie 180oC, 200oC and 220oC
and with the holding time to 18 hours. The result of X-Ray
Diffaction (XRD) showed that the two phases are formed Li4Ti5O12
and TiO2 corresponding to JCPDS No.00-49-0207. From the test
of Scanning Electron Microscope (SEM), Li4Ti5O12 has visible
morphological structure in the form of a nanowire with a length of
1 μm-5 μm and a diameter of 11 nm-60 nm. The test results show
that the electrochemical performance of the material Li4Ti5O12 have
the greatest specific capacity values at a temperature of 200oC with
a value of 93.222 mAh/g. This shows that the samples with
temperature 200oC have good resistance values in the highest
capacity, because it has the highest specific capacity. On the test of
Electrochemical Impedance Spectroscopy (EIS), the lowest Rct
values are at a temperature of 220oC for 55.2 Ohm. This is
inconsistent with the test results of XRD, which is should sample
at 200oC temperature that has the lowest Rct value. However,
overall, the anode Li4Ti5O12 with hydrothermal temperature 200oC
has great potential as an anode material for lithium ion batteries.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 621.312 423 Sak p |
| Uncontrolled Keywords: | Baterai Li-ion , Hidrotermal, Li4Ti5O12, Nanowire |
| Subjects: | T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 27 Nov 2019 04:09 |
| Last Modified: | 27 Nov 2019 04:09 |
| URI: | http://repository.its.ac.id/id/eprint/72077 |
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