Article
Chemistry, Multidisciplinary
Meisam Kahrizi, Hamideh Kashani, Ali Ghaffarinejad
Summary: We have reported a new anode material, Li4Ti5-xCuxO11.7F0.3 (X=0.1, 0.15, 0.2, 0.25, 0.3), for Li-ion batteries. Among these modified Li4Ti5O12 (LTO) materials, Li4Ti4.75Cu0.25O11.7F0.3 (LTCu0.25OF0.3) exhibits the best cyclability and rate ability. LTCu0.25OF0.3 delivers high discharge capacities at different current rates and shows excellent capacity retention after 100 charge and discharge cycles. The improved electrochemical performance is attributed to lower polarization and charge transfer resistance, as well as a higher Li+ diffusion coefficient.
Review
Materials Science, Ceramics
Hui Yan, Ding Zhang, Qilu, Xi Duo, Xianliang Sheng
Summary: With the growing demand for light, small, and high power rechargeable lithium ion batteries in electronic devices, spinel lithium titanate has attracted increasing attention as an electrode material due to its zero-strain structure, excellent cycle stability, and other appealing features. This review focuses on recent studies on spinel lithium titanate for energy storage devices, particularly on electrode redox reversibility, as well as synthesis methods and strategies for improving electrochemical performance.
CERAMICS INTERNATIONAL
(2021)
Article
Electrochemistry
Dan Shao, Dewei Rao, Aihua Wu, Xiangyi Luo
Summary: The introduction of large cations can improve the electrochemical performance of Li-ion batteries, but excessive concentration can hinder the transfer of lithium ions.
Article
Materials Science, Multidisciplinary
Shi-Fei Huang, Yao Lv, Da Tie, Yang Yu, Yu-Feng Zhao
Summary: In this study, a high-performance lithium-ion battery full cell was assembled using commercial LiNi0.33Co0.33Mn0.33O2 as the positive electrode and a mixture of Li4Ti5O12/hard carbon as the negative electrode. The optimal ratio of LTO and HC was found to be crucial in manipulating the electric conductivity and electro-reaction platform. The constructed full cell with 10 wt% HC demonstrated the best electrochemical performance, surpassing all systems within the study range and previous literature.
Article
Chemistry, Physical
Xiao Xiao, Lei Liu, Lei Zhang, Qiaohui Wang, Hao Yan, Bojie Zhao, Linxia Wang, Lei Ma, Yong Liu, Hongli An
Summary: Te-doped Li4Ti5O12 prepared by the ball milling-assisted solid-state method exhibited improved ionic and electronic conductivities, leading to enhanced performance in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Francesco Pagani, Max Doebeli, Corsin Battaglia
Summary: By investigating the electrochemical lithiation of epitaxial Li4Ti5O12 thin-film model electrodes, we identified the variation of lithium-ion conductivity with electrochemical lithiation, providing important insights for fast-charging applications of lithium-ion batteries.
BATTERIES & SUPERCAPS
(2021)
Article
Materials Science, Multidisciplinary
Alireza M. Kia, Jan Speulmanns, Jennifer Emara, Pavel Potapov, Axel Lubk, Nora Haufe
Summary: Lithium titanate (LTO) is a promising anode material for lithium-ion batteries, offering higher charging rate and safety compared to graphite and silicon. However, its limited conductivity and ionic kinetics diffusion hinder its application in solid-state batteries. This study demonstrates a modified atomic layer deposition approach to introduce Ti3+ and oxygen vacancies into the crystal lattice of LTO, improving its electronic conductivity. Moreover, the influence of different substrates as diffusion barriers on the film properties is investigated.
Article
Chemistry, Multidisciplinary
Kaiming Li, Xundong Dai, Maykel Manawan, Qing Wang, Jia Hong Pan
Summary: This study systematically investigates the relationship between key parameters and purity during the hydrothermal synthesis of Li4Ti5O12 nanoparticles, revealing the mechanism of Li4Ti5O12 formation using TiO2 precursors in a LiOH solution. The solid-state reaction between TiO2 core and LTOI shell at elevated temperatures enhances the performance of the lithium titanate, with high purity enhancing electrochemical properties and spherical morphology improving cyclic stability.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Engineering, Chemical
Yuhao Ma, Yangyang Wang, Guilin Yan, Fei Yuan, Wentao Zhang
Summary: The Ca-doped Li4Ti5O12 samples with flower-like morphology synthesized by hydrothermal method showed improved electrochemical performances as anode material for lithium-ion batteries. The incorporation of Ca2+ enhanced the specific discharge capacity, discharge rate, and cycling performance.
Article
Energy & Fuels
Truptimayee Acharya, Anil D. Pathak, Soobhankar Pati
Summary: Lithium titanate (LTO) anodes are preferred in lithium-ion batteries due to their durability and performance at different temperatures. This study investigates the effect of extreme temperatures on the electrical and electrochemical properties of LTO anodes. The capacity and C-rate performance of LTO anodes improve up to 70 degrees C, but deteriorate at temperatures above 80 degrees C and eventually fail at 130 degrees C. The results suggest that within a certain range, increasing temperature can facilitate faster charging of lithium-ion cells by improving rate capability and discharge capacities of LTO anodes.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Monika Michalska, Jiri Pavlovsky, Pavlina Peikertova, Sylva Holesova, Krishnan Shanmugam Anuratha, Jeng-Yu Lin
Summary: A modified sol-gel method was used to synthesize a nanocrystalline composite as an efficient anode material for lithium-ion batteries. The composite exhibited a mesoporous/microporous microstructure and showed improved electrochemical performance, especially at high C rates.
SOLID STATE IONICS
(2022)
Article
Electrochemistry
Christina Toigo, Martin Frankenberger, Nicolas Billot, Claudia Pscherer, Benedikt Stumper, Fabian Distelrath, Jonathan Schubert, Karl-Heinz Pettinger, Catia Arbizzani
Summary: Treating a copper current collector through electrolytic deposition of copper dendrites can enhance the contact between electrode materials and the collector, especially improving performance for submicron-sized active materials. Dendritic copper foil provides an 8-fold larger surface area than untreated foil, leading to significant improvements in the electrochemical interface area.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Taofeek Akintola, Annadanesh Shellikeri, Tawakalt Akintola, Jim P. Zheng
Summary: The study investigated the importance of the preparation technique of Li4Ti5O12 (LTO) anode in a lithium-ion capacitor (LIC) application, finding significant differences in morphological properties, rate capability, and full-cell cycle life performance. The best-performing LIC was influenced by the LTO anode with the least charge transfer and diffusion resistances, prepared using a surfactant, due to its small particle size, good dispersion, and high specific surface area. This highlights the crucial role of synthesis technique choice in the overall performance of LIC materials.
Article
Chemistry, Physical
Kazuhiko Mukai, Takamasa Nonaka, Takeshi Uyama
Summary: Research revealed a two-phase reaction scheme in lithium titanium oxide during lithium-ion battery operation, with distinct structural transformations observed at different scales. Linear, reversible changes in bond distance between titanium and oxygen atoms were observed at the atomic scale, while hysteresis in lattice parameter between discharge and charge reactions was noted at the microscale. These differences in structural changes were attributed to variances in spatial resolutions between XAS and XRD techniques.
ENERGY STORAGE MATERIALS
(2022)
Review
Materials Science, Ceramics
Z. Nezamzadeh Ezhyeh, M. Khodaei, F. Torabi
Summary: Lithium-Ion Batteries (LIBs) are crucial for saving oil and reducing exhaust emissions in applications such as electric vehicles and electronic devices. Lithium titanate (LTO) is a promising anode material with reversible Li-ion extraction and low volume change during Li transmission. However, LTO has limitations that can be improved through doping. This report reviews the doping of LTO with various dopants and different fabrication methods.
CERAMICS INTERNATIONAL
(2023)
