Electrospun Ta-doped TiO2/C nanofibers as a high-capacity and long-cycling anode material for Li-ion and K-ion batteries

2020 ◽  
Vol 8 (39) ◽  
pp. 20666-20676 ◽  
Author(s):  
Die Su ◽  
Li Liu ◽  
Zhixiao Liu ◽  
Jing Dai ◽  
Jiaxing Wen ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electrochemical Performance ◽  
Ion Transport ◽  
Anode Material ◽  
High Capacity ◽  
Doped Tio2 ◽  
Transport Distance ◽  
Li Ion

Ta-doped TiO2/C nanofibers can enhance the electrical conductivity, shorten the ion transport distance. Thus it shows outstanding electrochemical performance in both Li/K-metal half cells and Li/K full cells..

Enhancing Co/Co2VO4 Li-ion Battery Anode Performances via 2D-2D Heterostructure Engineering

Nanoscale ◽  
2021 ◽  
Author(s):  
Kun Wang ◽  
Yongyuan Hu ◽  
Jian Pei ◽  
Fengyang Jing ◽  
Zhongzheng Qin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Output Voltage ◽  
High Capacity ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Li Ion ◽  
Battery Anode

High capacity Co2VO4 becomes a potential anode material for lithium ion batteries (LIBs) benefiting from its lower output voltage during cycling than other cobalt vanadates. However, the application of this...

Improved electrochemical performance of LiCoO2 electrodes for high-voltage operations by Ag thin film coating via magnetron sputtering

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3513-3518 ◽  
Author(s):  
Taner Zerrin ◽  
Mihri Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Electrochemical Performance ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Interface Layer ◽  
Li Ion Batteries ◽  
Electrode Structure ◽  
Li Ion

ABSTRACTIncreasing the operation voltage of LiCoO2 (LCO) is a direct way to enhance the energy density of the Li-ion batteries. However, at high voltages, the cycling stability degrades very fast due to the irreversible changes in the electrode structure, and formation of an unstable solid electrolyte interface layer. In this work, Ag thin film was prepared on commercial LCO cathode by using magnetron sputtering technique. Ag coated electrode enabled an improved electrochemical performance with a better cycling capability. After 100 cycles, Ag coated LCO delivers a discharge capacity of 106.3 mAh g-1 within 3 - 4.5 V at C/5, which is increased by 45 % compared to that of the uncoated LCO. Coating the electrode surface with Ag thin film also delivered an improved Coulombic efficiency, which is believed to be an indication of suppressed parasitic reactions at the electrode interface. This work may lead to new methods on surface modifications of LCO and other cathode materials to achieve high-capacity Li-ion batteries for high-voltage operations.

Stabilization of planar tetra-coordinate silicon in a 2D-layered extended system and design of a high-capacity anode material for Li-ion batteries

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10450-10458 ◽  
Author(s):  
Ming-Jun Sun ◽  
Xinrui Cao ◽  
Zexing Cao
Keyword(s):  
Anode Material ◽  
High Capacity ◽  
Li Ion Batteries ◽  
Extended System ◽  
Electron Storage ◽  
Li Ion

Stabilization of planar tetracoordinate silicon (ptSi) was achieved in a 2D-layered extended system, and the newly designed ptSi SiC8 siligraphene shows novel structural and electron-storage features.

Oxygen vacancy regulated TiNb2O7 compound with enhanced electrochemical performance used as anode material in Li-ion batteries

2020 ◽  
Vol 330 ◽  
pp. 135299 ◽  
Author(s):  
Yupeng Zhang ◽  
Mengqi Zhang ◽  
Yangyang Liu ◽  
He Zhu ◽  
Lei Wang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Electrochemical Performance ◽  
Anode Material ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Enhanced Electrochemical Performance

Effect of cycling conditions on the electrochemical performance of high capacity Li and Mn-rich cathodes for Li-ion batteries

2016 ◽  
Vol 318 ◽  
pp. 9-17 ◽  
Author(s):  
Prasant Kumar Nayak ◽  
Judith Grinblat ◽  
Elena Levi ◽  
Boris Markovsky ◽  
Doron Aurbach
Keyword(s):  
Electrochemical Performance ◽  
High Capacity ◽  
Li Ion Batteries ◽  
Li Ion

High capacity, power density and cycling stability of silicon Li-ion battery anodes with a few layer black phosphorus additive

2019 ◽  
Vol 3 (1) ◽  
pp. 245-250 ◽  
Author(s):  
Kingshuk Roy ◽  
Malik Wahid ◽  
Dhanya Puthusseri ◽  
Apurva Patrike ◽  
Subas Muduli ◽  
...  
Keyword(s):  
Power Density ◽  
Anode Material ◽  
High Capacity ◽  
Black Phosphorus ◽  
Cycling Stability ◽  
Li Ion Battery ◽  
Volume Changes ◽  
High Theoretical Capacity ◽  
Li Ion ◽  
Battery Anode

The exceptionally high theoretical capacity of silicon as a Li-ion battery anode material is hard to realize and stabilize in practice due to huge volume changes during lithiation/de-lithiation. With the use of black phosphorus additive we could achieve tremendous stability due to strain management.

scholarly journals Directly Anodized Sulfur-Doped TiO2 Nanotubes as Improved Anodes for Li-ion Batteries

Batteries ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 51
Author(s):  
Davood Sabaghi ◽  
Mahmoud Madian ◽  
Ahmad Omar ◽  
Steffen Oswald ◽  
Margitta Uhlemann ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Tio2 Nanotubes ◽  
Rate Capability ◽  
Pure Tio2 ◽  
Electrochemical Anodization ◽  
Li Ion Batteries ◽  
Doped Tio2 ◽  
Li Ion ◽  
Elemental Doping

TiO2 represents one of the promising anode materials for lithium ion batteries due to its high thermal and chemical stability, relatively high theoretical specific capacity and low cost. However, the electrochemical performance, particularly for mesoporous TiO2, is limited and must be further developed. Elemental doping is a viable route to enhance rate capability and discharge capacity of TiO2 anodes in Li-ion batteries. Usually, elemental doping requires elevated temperatures, which represents a challenge, particularly for sulfur as a dopant. In this work, S-doped TiO2 nanotubes were successfully synthesized in situ during the electrochemical anodization of a titanium substrate at room temperature. The electrochemical anodization bath represented an ethylene glycol-based solution containing NH4F along with Na2S2O5 as the sulfur source. The S-doped TiO2 anodes demonstrated a higher areal discharge capacity of 95 µAh·cm−2 at a current rate of 100 µA·cm−2 after 100 cycles, as compared to the pure TiO2 nanotubes (60 µAh·cm−2). S-TiO2 also exhibited a significantly improved rate capability up to 2500 µA·cm−2 as compared to undoped TiO2. The improved electrochemical performance, as compared to pure TiO2 nanotubes, is attributed to a lower impedance in S-doped TiO2 nanotubes (STNTs). Thus, the direct S-doping during the anodization process is a promising and cost-effective route towards improved TiO2 anodes for Li-ion batteries.

scholarly journals Synthesis and Electrochemical Performance of Graphene Wrapped SnxTi1−xO2Nanoparticles as an Anode Material for Li-Ion Batteries

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Xing Xin ◽  
Xufeng Zhou ◽  
Tao Shen ◽  
Zhaoping Liu
Keyword(s):  
Solid Solution ◽  
Electrochemical Performance ◽  
Anode Material ◽  
Solution Method ◽  
Substitutional Solid Solution ◽  
Li Ion Batteries ◽  
Li Ion ◽  
The Stability ◽  
Ti Content ◽  
Aqueous Solution Method

Ever-growing development of Li-ion battery has urged the exploitation of new materials as electrodes. Here,SnxTi1-xO2solid-solution nanomaterials were prepared by aqueous solution method. The morphology, structures, and electrochemical performance ofSnxTi1-xO2nanoparticles were systematically investigated. The results indicate that Ti atom can replace the Sn atom to enter the lattice of SnO2to form substitutional solid-solution compounds. The capacity of the solid solution decreases while the stability is improved with the increasing of the Ti content. Solid solution withxof 0.7 exhibits the optimal electrochemical performance. The Sn0.7Ti0.3O2was further modified by highly conductive graphene to enhance its relatively low electrical conductivity. The Sn0.7Ti0.3O2/graphene composite exhibits much improved rate performance, indicating that theSnxTi1-xO2solid solution can be used as a potential anode material for Li-ion batteries.

Economical Synthesis and Promotion of the Electrochemical Performance of Silicon Nanowires as Anode Material in Li-Ion Batteries

2013 ◽  
Vol 5 (5) ◽  
pp. 1681-1687 ◽  
Author(s):  
Ying Xiao ◽  
Di Hao ◽  
Huixin Chen ◽  
Zhengliang Gong ◽  
Yong Yang
Keyword(s):  
Electrochemical Performance ◽  
Anode Material ◽  
Silicon Nanowires ◽  
Li Ion Batteries ◽  
Li Ion
Sign in / Sign up

Export Citation Format

Share Document