scholarly journals Al Ions Doping Effect on The Diffusion Coefficient and Capacity of Li4Ti5O12 (Lithium Titanate, LTO) in Lithium-Ion Battery Anode

2020 ◽  
pp. 51-57
Author(s):  
Slamet Priyono ◽  
Lufthansyah Daniswara ◽  
Rahma Alfia Khoiri ◽  
Yayuk Astuti
Keyword(s):  
Diffusion Coefficient ◽  
Sol Gel ◽  
Lithium Ion ◽  
Lithium Titanate ◽  
Test Results ◽  
Lithium Metal ◽  
Al Doping ◽  
Polarization Voltage ◽  
And Diffusion ◽  
Battery Anode

Li4Ti5O12 (LTO) anode doped with Al ions with varying concentrations (Al = 0; 0.005; 0.015; 0.03; 0.045) was successfully synthesized using the sol-gel method. Al-doped LTO samples were obtained through the sintering of gel at 850oC for 4 hours under a normal atmosphere. Electrochemical performance such as charge-discharge capacity and diffusion coefficient were characterized using an automatic battery cycler. The cells consist of electrode sheets (LTO doping Al) as a working electrode, lithium metal as the counter electrode, Celgard film as the separator, and LiPF6 as an electrolyte. Cyclic voltammetry test results show that a greater scan rate results in decreased capacity and greater polarization voltage. In addition, an increase in concentrations used in Al doping on LTO causes capacity, and the diffusion coefficient tends to decrease.

Diffraction gratings and diffusion coefficient determination of acrylamide and polyacrylamide in sol-gel glass

2004 ◽  
Vol 84 (23) ◽  
pp. 4765-4767 ◽  
Author(s):  
S. Blaya ◽  
A. Murciano ◽  
P. Acebal ◽  
L. Carretero ◽  
M. Ulibarrena ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Sol Gel ◽  
Diffraction Gratings ◽  
And Diffusion

scholarly journals In situ studies of lithium-ion diffusion in a lithium-rich thin film cathode by scanning probe microscopy techniques

2015 ◽  
Vol 17 (34) ◽  
pp. 22235-22242 ◽  
Author(s):  
Shan Yang ◽  
Binggong Yan ◽  
Tao Li ◽  
Jing Zhu ◽  
Li Lu ◽  
...  
Keyword(s):  
Thin Film ◽  
Diffusion Coefficient ◽  
Scanning Probe Microscopy ◽  
Lithium Ion ◽  
Scanning Probe ◽  
Ion Diffusion ◽  
Microscopy Techniques ◽  
And Diffusion ◽  
Lithium Ion Diffusion

Band-excitation Electrochemical Strain Microscopy (BE-ESM) imaging and diffusion coefficient mapping of Li-rich cathode film.

Characterization of LTO/Silicon Oxycarbide with Activated Carbon Addition for Anode of Lithium-Ion Batteries

2020 ◽  
Vol 1000 ◽  
pp. 3-11
Author(s):  
Bambang Priyono ◽  
Mochamad Febby Fitratama ◽  
Shania Roulli ◽  
Achmad Subhan ◽  
Anne Zulfia Syahrial
Keyword(s):  
Activated Carbon ◽  
Silicone Oil ◽  
Spinel Phase ◽  
Sol Gel ◽  
Specific Capacity ◽  
Performance Testing ◽  
Lithium Ion ◽  
Lithium Titanate ◽  
High Conductivity ◽  
Silicon Oxycarbide

Lithium Titanate (LTO) is one of the anode materials that has good performance because of its unique properties, which is zero-strain. In this study, LTO was synthesized using the sol-gel method and mechanochemical hydrothermal with LiOH as the source of lithium-ion. Silicone oxycarbide (SiOC) is a ceramic material synthesized through a simple pyrolysis process of silicone oil precursors. Carbon used in this study is a carbon activated process so that activated carbon is obtained with a large pore size. The addition of activated carbon to the LTO is done during the sol-gel process, while the addition of SiOC to LTO-C is performed during the slurry making process. SEM-EDS shows the extent of the elements in the sample where Ti, F, Si, O, and C are present. Also, SEM-EDS characterization shows an increase in the amount of carbon in each sample. XRD shows the presence of the LTO spinel phase and impurity phases such as TiO2 rutile and anatase, and Li2TiO3. In EIS performance testing, low resistivity expresses high conductivity. In this research, high conductivity is owned by LTO-1% C/SiOC. In addition, CV and CD performance tests were performed where the highest specific capacity was obtained in the LTO-5%/SiOC samples.

Crystal structure, solid phase diffusion path and coefficient of Zr-doped Li4Ti5O12

2019 ◽  
Vol 13 (01) ◽  
pp. 1951007
Author(s):  
Zheng Shi ◽  
Shengping Wang ◽  
Qingyun Wei
Keyword(s):  
Crystal Structure ◽  
Solid Phase ◽  
Coulombic Efficiency ◽  
Sol Gel ◽  
Lithium Ion ◽  
Diffusion Path ◽  
Lithium Titanate ◽  
Cycle Performance ◽  
Rate Performance ◽  
High Discharge Capacity

The influences of the crystal structure of Zr-doped lithium titanate prepared by the sol–gel method on the lithium ion diffusion coefficient and rate performance were studied. Compared with the pure phase Li4Ti5O[Formula: see text], Zr-doped lithium titanate presented a high discharge capacity as well as a good rate performance and cycle performance, and Li4Zr[Formula: see text]Ti[Formula: see text]O[Formula: see text] yielded the best electrochemical performance. Li4Zr[Formula: see text]Ti[Formula: see text]O[Formula: see text] possessed capacities of 162 (1st) and 143 (100th) mAh g[Formula: see text] at 5[Formula: see text]mA[Formula: see text]cm[Formula: see text] with [Formula: see text]100% of the coulombic efficiency. The area of the migration surface of Li4Ti5O[Formula: see text] is proportional to the square of the lattice constant, so Li4Zr[Formula: see text]Ti[Formula: see text]O[Formula: see text] demonstrated the largest migration surface with 8.3600 Å of “[Formula: see text]”. The larger the migration surface is, the lower the activation energy for lithium ion migration is, and the easier it is for lithium ions to diffuse and migrate.

scholarly journals Preparation of Si/TiO2 Composite by the Sol-Gel Method Using As the Lithium-Ion Battery Anode

2017 ◽  
Vol 250 ◽  
pp. 012054 ◽  
Author(s):  
Quanwei Wang ◽  
Yueqin Ban ◽  
Hengwei Zhou ◽  
Lili Zhang ◽  
Yineng Huang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Sol Gel ◽  
Lithium Ion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Battery Anode

Nanotube Li2MoO4: a novel and high-capacity material as a lithium-ion battery anode

Nanoscale ◽  
2014 ◽  
Vol 6 (22) ◽  
pp. 13660-13667 ◽  
Author(s):  
Xudong Liu ◽  
Yingchun Lyu ◽  
Zhihua Zhang ◽  
Hong Li ◽  
Yong-sheng Hu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Sol Gel ◽  
High Capacity ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Excellent Electrochemical Performance ◽  
Carbon Coated ◽  
Li Ion ◽  
Battery Anode

Carbon-coated Li2MoO4 nanotubes fabricated by sol–gel method exhibit an excellent electrochemical performance when evaluated as an anode material for Li-ion battery.

scholarly journals Effect of Ni2+ on Lithium-Ion Diffusion in Layered LiNi1−x−yMnxCoyO2 Materials

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 465
Author(s):  
Yuanyuan Zhu ◽  
Yang Huang ◽  
Rong Du ◽  
Ming Tang ◽  
Baotian Wang ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Local Coordination ◽  
Excellent Electrochemical Performance ◽  
Layered Cathode Materials ◽  
Li Ion ◽  
Dynamics Simulations ◽  
And Diffusion ◽  
Lithium Ion Diffusion

LiNi1−x−yMnxCoyO2 materials are a typical class of layered cathode materials with excellent electrochemical performance in lithium-ion batteries. Molecular dynamics simulations are performed for LiNi1−x−yMnxCoyO2 materials with different transition metal ratios. The Li/Ni exchange ratio, ratio of anti-site Ni2+ to total Ni2+, and diffusion coefficient of Li ions in these materials are calculated. The results show that the Li-ion diffusion coefficient strongly depends on the ratio of anti-site Ni2+ to total Ni2+ because their variation tendencies are similar. In addition, the local coordination structure of the Li/Ni anti-site is analyzed.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF Li4Ti5O12 WITH SOL GEL METHOD AS A LITHIUM ION-BATTERY ANODE MATERIAL

2019 ◽  
Vol 20 (2) ◽  
pp. 67
Author(s):  
Slamet Priyono ◽  
Ilma Nuroniah ◽  
Achmad Subhan ◽  
Edi Sanjaya ◽  
Bambang Prihandoko
Keyword(s):  
Electrical Conductivity ◽  
Sol Gel ◽  
Lithium Ion ◽  
Synthesis And Characterization ◽  
Optimum Temperature ◽  
Gel Method ◽  
Sol Gel Method ◽  
Battery Anode ◽  
Charge Discharge

SYNTHESIS AND CHARACTERIZATION OF Li4Ti5O12 WITH SOL GEL METHOD AS A LITHIUM ION-BATTERY ANODE MATERIAL. Synthesis of anode Li4Ti5O12 material has been carried out using the sol gel method. The synthesis is carried out with variations in sintering temperatures at 500 oC, 600 oC, 700 oC dan 800 oC. Characterization carried out includes testing thermal analysis to determine the optimum temperature for sintering, XRD (X-ray Diffraction) to find out the phase formation of Li4Ti5O12, Scanning electron microscope (SEM) to analyse the morphology formed, testing Cyclic voltammetry, charge-discharge and Electrochemical Impedance Spectroscopy (EIS) is carried out to find out the elec- trochemical performance. From the results of characterization of thermal and XRD analyses, the optimum temperature for synthesis is 800oC with small impurity content. The results of SEM characterization show that the morphology of the sample is not homogeneous, and the particles are agglomerated. The resulting electrochemical performance increases along with the increase in temperature for sintering, including voltammogram graphs, diffusion coefficient values, electrical conductivity and charge-discharge capacity. Of all the samples, the LTO sintered at 800oC shows good electrochemical performance with a sharp and good voltammogram graph, diffusion coefficient value of lithium ion is 1.58 × 10-9 cm2s-1, electrical conductivity of 0.6282 S/cm and the discharge capacity given is 78,07 mAh/g.

Sign in / Sign up

Export Citation Format

Share Document