Ultrahigh rate capability and long cycling stability of dual-ion batteries enabled by TiO2 microspheres with abundant oxygen vacancies

2020 ◽  
Vol 56 (58) ◽  
pp. 8039-8042 ◽  
Author(s):  
Tong Mu ◽  
Jiguang Zhang ◽  
Rui Shi ◽  
Yunfeng Zhu ◽  
Jinglian Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Oxygen Vacancies ◽  
Rate Capability ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Tio2 Microspheres

By introducing oxygen vacancies, TiO2 microspheres exhibit outstanding electrochemical performance for dual Mg/Li-ion batteries.

scholarly journals Improved electrochemical performance of nitrogen doped TiO2-B nanowires as anode materials for Li-ion batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (28) ◽  
pp. 12215-12224 ◽  
Author(s):  
Yongquan Zhang ◽  
Qiang Fu ◽  
Qiaoling Xu ◽  
Xiao Yan ◽  
Rongyu Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Structural Stability ◽  
Anode Materials ◽  
Rate Capability ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
Li Ion

The substituted-N plays a key role in improving the conductivity and structural stability of TiO2-B. Thereout, the rate capability and cycling stability of the TiO2-B nanowires are significantly improved.

Enhanced Rate Capability and Cycling Stability of Novel Ammonium Vanadate Materials Used in Aqueous Li-Ion Batteries

2021 ◽  
Vol 35 (5) ◽  
pp. 4570-4576
Author(s):  
Najeeb ur Rehman Lashari ◽  
Mingshu Zhao ◽  
Qingyang Zheng ◽  
Xinhai He ◽  
Irfan Ahmed ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Ammonium Vanadate ◽  
Li Ion ◽  
Materials Used

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.

Ultrathin Na1.08V3O8 nanosheets—a novel cathode material with superior rate capability and cycling stability for Li-ion batteries

2012 ◽  
Vol 5 (3) ◽  
pp. 6173 ◽  
Author(s):  
Haiyan Wang ◽  
Suqin Liu ◽  
Yu Ren ◽  
Wenjie Wang ◽  
Aidong Tang
Keyword(s):  
Cathode Material ◽  
Rate Capability ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion

LixV2O5/LiV3O8 nanoflakes with significantly improved electrochemical performance for Li-ion batteries

2014 ◽  
Vol 2 (21) ◽  
pp. 8009-8016 ◽  
Author(s):  
Dan Sun ◽  
Guanhua Jin ◽  
Haiyan Wang ◽  
Xiaobing Huang ◽  
Yu Ren ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cycling Stability ◽  
The Self ◽  
Core Shell ◽  
Rate Performance ◽  
Li Ion Batteries ◽  
Reducing Atmosphere ◽  
Li Ion ◽  
Novel Strategy

A novel strategy involving the self-transformation of superficial LiV3O8 in a reducing atmosphere (H2/Ar) was reported to fabricate core–shell structured LixV2O5/LiV3O8 nanoflakes. The cycling stability and rate performance were significantly improved.

Nanostructured anode materials for Li-ion batteries

2008 ◽  
Vol 80 (11) ◽  
pp. 2283-2295 ◽  
Author(s):  
Nahong Zhao ◽  
Lijun Fu ◽  
Lichun Yang ◽  
Tao Zhang ◽  
Gaojun Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Anode Materials ◽  
High Capacity ◽  
Rate Capability ◽  
Core Shell ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cycling Behavior

This paper focuses on the latest progress in the preparation of a series of nanostructured anode materials in our laboratory and their electrochemical properties for Li-ion batteries. These anode materials include core-shell structured Si nanocomposites, TiO2 nanocomposites, novel MoO2 anode material, and carbon nanotube (CNT)-coated SnO2 nanowires (NWs). The substantial advantages of these nanostructured anodes provide greatly improved electrochemical performance including high capacity, better cycling behavior, and rate capability.

Scalable synthesis of one-dimensional Na2Li2Ti6O14 nanofibers as ultrahigh rate capability anodes for lithium-ion batteries

2019 ◽  
Vol 6 (3) ◽  
pp. 646-653 ◽  
Author(s):  
Chao Wang ◽  
Xing Xin ◽  
Miao Shu ◽  
Shuiping Huang ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Li Ion Batteries ◽  
High Rate Capability ◽  
One Dimensional ◽  
Long Cycle Life ◽  
Li Ion ◽  
Scalable Synthesis

Na2Li2Ti6O14 nanofibers presented superior electrochemical performance with high rate capability and long cycle life and can be regarded as a competitive anode candidate for advanced Li-ion batteries.

TiO2-B/Ag Nanocomposite Wires Enhanced Electrochemical Performance for Li-ion Batteries

2017 ◽  
Vol 20 (4) ◽  
pp. 183-188 ◽  
Author(s):  
Jinlong Wang ◽  
Kaixin Song ◽  
Changqing Tong ◽  
Guanglei Tian ◽  
Jun Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Diffusion Length ◽  
Rate Capability ◽  
Performance Tests ◽  
Performance Difference ◽  
Li Ion Batteries ◽  
Silver Particles ◽  
Ion Diffusion ◽  
Li Ion ◽  
Enhanced Electrochemical Performance

In this work, the pristine and Ag-composited TiO2-Bronze (TiO2-B) nanowires are successfully synthesized by hydrothermal method using anatase(P25) as titanium source. The SEM, TEM results reveal that the silver particles are well distributed on the TiO2-B nanowires. Also, the TiO2-B/Ag nanowires are dispersed very well, which demonstrate more Li-ion insertion/extraction hosts exposed to the electrolyte. Moreover, the electrochemical performance tests suggest that compared with the pristine TiO2-B, the Ag-composited TiO2-B (TiO2-B/Ag) shows remarkably higher capacities (~286mAhg-1, closing to the theoretical capacity) and superior rate capability. The reasons causing this performance difference are ascribed to the added silver particles, which could reduce the Li-ion diffusion length and improve the material electrical conductivity.

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