Fabrikasi Lithium Titanate Terdoping Al (Li4Ti4,975Al0,025O12) dan Studi Pengaruh Ketebalan Lembaran Elektroda pada Sel Setengah Baterai Ion Lithium
FABRIKASI LITHIUM TITANATE TERDOPING Al (Li4Ti4,975Al0,025O12) DAN
STUDI PENGARUH KETEBALAN LEMBARAN ELEKTRODA PADA
SEL SETENGAH BATERAI ION LITHIUM
ABSTRAK
Sintesis serbuk dan pembuatan lembaran anoda Li4Ti5O12 doping Al (x=0,025)
telah berhasil dilakukan. Sintesis serbuk LTO doping Al dilakukan dengan
metode solid state sedangkan pembuatan lembaran anoda dilakukan dengan
metode coating doctor blade. Pembuatan lembaran dilakukan dengan memvariasi
ketebalan coating 100µm, 200µm, 300µm dan 400µm. untuk mengetahui
pengaruh ketebalan coating terhadap performa sel baterai. Pengujian yang
dilakukan meliputi analisa fasa dengan menggunakan EIS, CV dan CD. Hasil
analisa XRD menunjukkan ada dua fasa yang tebentuk, yaitu fasa Lithium
Titanium Oxide (Li1.333Ti1.667O4) sebanyak 75,6 % dan fasa Rutile, syn (TiO2)
sebanyak 24,4%. Hasil EIS menunjukkan bahwa semakin tebal lapisan coating
maka konduktifitas sampel semakin besar. Selanjutnya hasil CV menunjukkan
bahwa sampel 100µm, 200µm dan 300µm memiliki puncak oksidasi/reduksi yang
tajam sedangkan sampel 400µm memiliki puncak yang melebar. Sedangkan
kapasitas sel baterai semakin menurun seiring dengan meningkatnya ketebalan
coating, kapasitas sel terbaik yang diperoleh adalah kapasitas Charge sebesar
137,08 mAh/g dan kapasitas discharge sebesar 134,3 mAh/g.
Kata Kunci: Baterai, Anoda, Li4Ti5O12, doping Al, Performa elektrokimia,
Universitas Sumatera Utara
Al DOPED LITHIUM TITANATE FABRICATION (Li4Ti4,975Al0,025O12) AND
STUDY EFFECT OF COATING THICKNESS ELECTRODE SHEET
ON THE HALF CELL LITHIUM ION BATTERY
ABSTACT
The effect of coating thickness of Al doped Li4Ti5O12 (LTO) sheet on the
electrochemical performance of battery cells have been investigated. 0.025 mol Al
doped LTO powder was synthesized by solid state reaction method, while the
manufacture of the anode sheet was made by Doctor Blade coating method.
Manufacture of sheet was done by varying the thickness of the coating (100um,
200um, 300um and 400um) to determine the effect of coating thickness on the
electrochemical performance of the battery cell. Testing was conducted on the
analysis of phase with XRD and electrochemical performance was conducted by
using EIS, CV and CD. XRD analysis showed that there are two phases that were
formed i.e Lithium Titanium Oxide phase (Li1.333Ti1.667O4) and rutile phase, syn
(TiO2) as much as 75.6% and 24.4% respectively. EIS results showed that the
thicker the coating layer, the conductivity of the sample become greater.
Furthermore, the results indicate that the sample CV 100 um, 200 um and 300um
have a sharp oxidation/reduction peak while 400um has wide redox peaks. While
the specific capacity and specific power of the half cell battery decreases with the
increasing of coating thickness. The best cell capacity is obtained by sample with
100 um thickness with specific charge capacity of 137.08 mAh/g and specific
discharge capacity of 134.3 mAh / g.
Keywords: Battery, Anode, LTO, Al doped, electrochemical performance,
Universitas Sumatera Utara
STUDI PENGARUH KETEBALAN LEMBARAN ELEKTRODA PADA
SEL SETENGAH BATERAI ION LITHIUM
ABSTRAK
Sintesis serbuk dan pembuatan lembaran anoda Li4Ti5O12 doping Al (x=0,025)
telah berhasil dilakukan. Sintesis serbuk LTO doping Al dilakukan dengan
metode solid state sedangkan pembuatan lembaran anoda dilakukan dengan
metode coating doctor blade. Pembuatan lembaran dilakukan dengan memvariasi
ketebalan coating 100µm, 200µm, 300µm dan 400µm. untuk mengetahui
pengaruh ketebalan coating terhadap performa sel baterai. Pengujian yang
dilakukan meliputi analisa fasa dengan menggunakan EIS, CV dan CD. Hasil
analisa XRD menunjukkan ada dua fasa yang tebentuk, yaitu fasa Lithium
Titanium Oxide (Li1.333Ti1.667O4) sebanyak 75,6 % dan fasa Rutile, syn (TiO2)
sebanyak 24,4%. Hasil EIS menunjukkan bahwa semakin tebal lapisan coating
maka konduktifitas sampel semakin besar. Selanjutnya hasil CV menunjukkan
bahwa sampel 100µm, 200µm dan 300µm memiliki puncak oksidasi/reduksi yang
tajam sedangkan sampel 400µm memiliki puncak yang melebar. Sedangkan
kapasitas sel baterai semakin menurun seiring dengan meningkatnya ketebalan
coating, kapasitas sel terbaik yang diperoleh adalah kapasitas Charge sebesar
137,08 mAh/g dan kapasitas discharge sebesar 134,3 mAh/g.
Kata Kunci: Baterai, Anoda, Li4Ti5O12, doping Al, Performa elektrokimia,
Universitas Sumatera Utara
Al DOPED LITHIUM TITANATE FABRICATION (Li4Ti4,975Al0,025O12) AND
STUDY EFFECT OF COATING THICKNESS ELECTRODE SHEET
ON THE HALF CELL LITHIUM ION BATTERY
ABSTACT
The effect of coating thickness of Al doped Li4Ti5O12 (LTO) sheet on the
electrochemical performance of battery cells have been investigated. 0.025 mol Al
doped LTO powder was synthesized by solid state reaction method, while the
manufacture of the anode sheet was made by Doctor Blade coating method.
Manufacture of sheet was done by varying the thickness of the coating (100um,
200um, 300um and 400um) to determine the effect of coating thickness on the
electrochemical performance of the battery cell. Testing was conducted on the
analysis of phase with XRD and electrochemical performance was conducted by
using EIS, CV and CD. XRD analysis showed that there are two phases that were
formed i.e Lithium Titanium Oxide phase (Li1.333Ti1.667O4) and rutile phase, syn
(TiO2) as much as 75.6% and 24.4% respectively. EIS results showed that the
thicker the coating layer, the conductivity of the sample become greater.
Furthermore, the results indicate that the sample CV 100 um, 200 um and 300um
have a sharp oxidation/reduction peak while 400um has wide redox peaks. While
the specific capacity and specific power of the half cell battery decreases with the
increasing of coating thickness. The best cell capacity is obtained by sample with
100 um thickness with specific charge capacity of 137.08 mAh/g and specific
discharge capacity of 134.3 mAh / g.
Keywords: Battery, Anode, LTO, Al doped, electrochemical performance,
Universitas Sumatera Utara