An Al2O3 coating layer on mesoporous Si nanospheres for stable solid electrolyte interphase and high-rate capacity for lithium ion batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (36) ◽  
pp. 16781-16787 ◽  
Author(s):  
Na Li ◽  
Zheng Yi ◽  
Ning Lin ◽  
Yitai Qian
Keyword(s):  
Lithium Ion Batteries ◽  
Coating Layer ◽  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
High Rate ◽  
Al2o3 Coating ◽  
Replacement Reaction ◽  
Reaction Route ◽  
One Pot ◽  
Rate Capacity

A simple and one-pot replacement reaction route was designed to produce an Al2O3 layer anchored on mesoporous Si nanospheres by employing Al nanospheres with a naturally formed Al2O3 layer as a reducing agent and self-sacrificial template.

Rational synthesis of Li4Ti5O12/N-C nanotube arrays as advanced high-rate electrodes for lithium-ion batteries

2018 ◽  
Vol 6 (9) ◽  
pp. 3857-3863 ◽  
Author(s):  
Jun Liu ◽  
Ai Xiang Wei ◽  
Minghua Chen ◽  
Xinhui Xia
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Rate ◽  
Nanotube Arrays ◽  
High Quality ◽  
Conductive Substrate ◽  
Rate Capacity

High-quality Li4Ti5O12/N-doped carbon (LTO/N-C) nanotube arrays on a conductive substrate are fabricated via a new ALD-assisted method for lithium ion battery applications. The designed LTO/N-C nanotube arrays show very impressive high-rate capacity (153 mA h g−1 at 5C) and stable capacity: 98% retention after 6000 cycles at 40C.

scholarly journals Sn-Doping and Li2SnO3 Nano-Coating Layer Co-Modified LiNi0.5Co0.2Mn0.3O2 with Improved Cycle Stability at 4.6 V Cut-off Voltage

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 868 ◽  
Author(s):  
Huali Zhu ◽  
Rui Shen ◽  
Yiwei Tang ◽  
Xiaoyan Yan ◽  
Jun Liu ◽  
...  
Keyword(s):  
Coating Layer ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Molten Salt Method ◽  
Cycle Stability ◽  
Sn Doping ◽  
Nano Coating ◽  
Rate Capacity

Nickel-rich layered LiNi1−x−yCoxMnyO2 (LiMO2) is widely investigated as a promising cathode material for advanced lithium-ion batteries used in electric vehicles, and a much higher energy density in higher cut-off voltage is emergent for long driving range. However, during extensive cycling when charged to higher voltage, the battery exhibits severe capacity fading and obvious structural collapse, which leads to poor cycle stability. Herein, Sn-doping and in situ formed Li2SnO3 nano-coating layer co-modified spherical-like LiNi0.5Co0.2Mn0.3O2 samples were successfully prepared using a facile molten salt method and demonstrated excellent cyclic properties and high-rate capabilities. The transition metal site was expected to be substituted by Sn in this study. The original crystal structures of the layered materials were influenced by Sn-doping. Sn not only entered into the crystal lattice of LiNi0.5Co0.2Mn0.3O2, but also formed Li+-conductive Li2SnO3 on the surface. Sn-doping and Li2SnO3 coating layer co-modification are helpful to optimize the ratio of Ni2+ and Ni3+, and to improve the conductivity of the cathode. The reversible capacity and rate capability of the cathode are improved by Sn-modification. The 3 mol% Sn-modified LiNi0.5Co0.2Mn0.3O2 sample maintained the reversible capacity of 146.8 mAh g−1 at 5C, corresponding to 75.8% of its low-rate capacity (0.1C, 193.7mAh g−1) and kept the reversible capacity of 157.3 mAh g−1 with 88.4% capacity retention after 100 charge and discharge cycles at 1C rate between 2.7 and 4.6 V, showing the improved electrochemical property.

In situ polyaniline modified cathode material Li[Li0.2Mn0.54Ni0.13Co0.13]O2 with high rate capacity for lithium ion batteries

2014 ◽  
Vol 2 (43) ◽  
pp. 18613-18623 ◽  
Author(s):  
Qingrui. Xue ◽  
Jianling. Li ◽  
Guofeng. Xu ◽  
Hongwei. Zhou ◽  
Xindong. Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Acid Treatment ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Capacity ◽  
Compound Modification

Compound modification by polyaniline coating and acid treatment is an ideal way to improve the electrochemical performance of Li[Li0.2Mn0.54Ni0.13Co0.13]O2.

High rate capacity anode of Si-C composite nanofiber wrapped with Cu foam for lithium-ion batteries

2020 ◽  
Vol 268 ◽  
pp. 127572
Author(s):  
Xiaoqiang Tian ◽  
Gaoda Li ◽  
Leixin Meng ◽  
Wang Tian ◽  
Xin Gu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Rate ◽  
Composite Nanofiber ◽  
Rate Capacity ◽  
Cu Foam

Directionally assembled MoS2 with significantly expanded interlayer spacing: a superior anode material for high-rate lithium-ion batteries

2018 ◽  
Vol 2 (8) ◽  
pp. 1441-1448 ◽  
Author(s):  
Qilin Wei ◽  
Min-Rui Gao ◽  
Yan Li ◽  
Dongtang Zhang ◽  
Siyu Wu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Interlayer Spacing ◽  
High Rate ◽  
New Class ◽  
Multi Walled Carbon Nanotubes ◽  
Rate Capacity ◽  
Walled Carbon Nanotubes

Interlayer-expanded MoS2 nanosheets directionally assembled on multi-walled carbon nanotubes represent a new class of anode materials for lithium ion batteries with superior high rate capacity.

3-dimensional porous NiCo2O4 nanocomposite as a high-rate capacity anode for lithium-ion batteries

2015 ◽  
Vol 176 ◽  
pp. 575-585 ◽  
Author(s):  
Yudi Mo ◽  
Qiang Ru ◽  
Xiong Song ◽  
Shejun Hu ◽  
Lingyun Guo ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Rate ◽  
3 Dimensional ◽  
Rate Capacity
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