scholarly journals Polyimide-Derived Carbon-Coated Li4Ti5O12 as High-Rate Anode Materials for Lithium Ion Batteries

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1672
Author(s):  
Shih-Chieh Hsu ◽  
Tzu-Ten Huang ◽  
Yen-Ju Wu ◽  
Cheng-Zhang Lu ◽  
Huei Chu Weng ◽  
...  
Keyword(s):  
Carbon Source ◽  
Electrochemical Performance ◽  
Anode Materials ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Molecular Arrangement ◽  
Thermal Imidization ◽  
Carbon Coated ◽  
Graphite Structure

Carbon-coated Li4Ti5O12 (LTO) has been prepared using polyimide (PI) as a carbon source via the thermal imidization of polyamic acid (PAA) followed by a carbonization process. In this study, the PI with different structures based on pyromellitic dianhydride (PMDA), 4,4′-oxydianiline (ODA), and p-phenylenediamine (p-PDA) moieties have been synthesized. The effect of the PI structure on the electrochemical performance of the carbon-coated LTO has been investigated. The results indicate that the molecular arrangement of PI can be improved when the rigid p-PDA units are introduced into the PI backbone. The carbons derived from the p-PDA-based PI show a more regular graphite structure with fewer defects and higher conductivity. As a result, the carbon-coated LTO exhibits a better rate performance with a discharge capacity of 137.5 mAh/g at 20 C, which is almost 1.5 times larger than that of bare LTO (94.4 mAh/g).

scholarly journals High electrochemical performance of nanocrystallized carbon-coated LiFePO4 modified by tris(pentafluorophenyl) borane as a cathode material for lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (51) ◽  
pp. 28978-28986 ◽  
Author(s):  
Yifang Wu ◽  
Shaokun Chong ◽  
Yongning Liu ◽  
ShengWu Guo ◽  
Pengwei Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Carbon Coated ◽  
Boron Source

C18BF15 was first adopted as a boron source and has demonstrated its clear modification effects, as shown by the high rate capability.

MOF-derived, N-doped porous carbon coated graphene sheets as high-performance anodes for lithium-ion batteries

2016 ◽  
Vol 40 (11) ◽  
pp. 9679-9683 ◽  
Author(s):  
Xin Liu ◽  
Shichao Zhang ◽  
Yalan Xing ◽  
Shengbin Wang ◽  
Puheng Yang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Graphene Sheet ◽  
Porous Carbon ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Graphene Sheets ◽  
Carbon Coated

N-doped porous carbon coated graphene sheet anode materials exhibit fascinating electrochemical performance with a capacity of 1040 mA h g−1.

High rate capabilities of Li4Ti5−xVxO12 (0 ≤ x ≤ 0.3) anode materials prepared by a sol–gel method for use in power lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49248-49256 ◽  
Author(s):  
Chien-Min Chang ◽  
Yi-Chih Chen ◽  
Wei-Lun Ma ◽  
Yui Whei Chen-Yang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
High Rate ◽  
Gel Method ◽  
Sol Gel Method ◽  
Performance Results

The electrochemical performance results show that the highest capacities, 208 (0.2 C), 198 (0.5 C), 189 (1 C), 179 (2 C), 157 mA h g−1 (5 C), are obtained from the LTOV06 electrode, which are higher than those of the LTO electrodes reported.

Sandwiched C@SnO2@C hollow nanostructures as an ultralong-lifespan high-rate anode material for lithium-ion and sodium-ion batteries

2017 ◽  
Vol 5 (22) ◽  
pp. 10946-10956 ◽  
Author(s):  
Jian Qin ◽  
Naiqin Zhao ◽  
Chunsheng Shi ◽  
Enzuo Liu ◽  
Fang He ◽  
...  
Keyword(s):  
Anode Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Hollow Nanostructures ◽  
Carbon Coated ◽  
Carbon Core ◽  
Hollow Carbon

Novel interconnected sandwiched carbon-coated hollow nanostructures, i.e., carbon–shell/SnO2–nanocrystal–layer/hollow–carbon–core, were developed as SIB anode materials.

Improved electrochemical performance of onion-like carbon coated magnetite nanocapsules as electromagnetic absorptive anode materials for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (41) ◽  
pp. 32452-32459 ◽  
Author(s):  
Nannan Bi ◽  
Xianguo Liu ◽  
Niandu Wu ◽  
Caiyun Cui ◽  
Yuping Sun
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
The Core ◽  
Carbon Coated

The synthesis of magnetite (Fe3O4)@C nanocapsules with Fe3O4nanoparticles as the core and onion-like carbon as the shell has been reported.

Hydrogen titanate constructed by ultrafine nanobelts as advanced anode materials with high-rate and ultra-long life for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (126) ◽  
pp. 104275-104283 ◽  
Author(s):  
Qinghua Tian ◽  
Yang Tian ◽  
Zhengxi Zhang ◽  
Li Yang ◽  
Shin-ichi Hirano
Keyword(s):  
Heat Treatment ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Treatment Strategies ◽  
Lithium Ion ◽  
High Rate ◽  
Morphology Engineering ◽  
Long Life ◽  
Hydrogen Titanate

The electrochemical performance of hydrogen titanate has been successfully and significantly improved by novel morphology engineering and heat treatment strategies.

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