Effect of Carbon Source on Synthesis of Carbon Coated Lithium Titanate

2022 ◽  
Vol 905 ◽  
pp. 160-165
Author(s):  
Rong Yang ◽  
Chun Rong Zhao ◽  
Su Rong Kan ◽  
Min Juan Yuan
Keyword(s):  
Carbon Content ◽  
Ionic Transport ◽  
Lithium Titanate ◽  
High Rate ◽  
Irreversible Capacity ◽  
Excess Carbon ◽  
Carbon Coated ◽  
Residual Carbon Content ◽  
Fast Electronic ◽  
Discharge Capacities

Carbon coated lithium titanate (Li4Ti5O12/C) was obtained by a facile solid state approach in inert Ar atmosphere. The composition, morphology, residual carbon content and Ti valence of the samples were systematically investigated. The carbon content of Li4Ti5O12/C should be optimized, since excess carbon in the composite leads to the reduction of Ti (IV) to form Ti (III), which results in large irreversible capacity of Li4Ti5O12/C. With an optimal carbon content of 0.68wt%, the Li4Ti5O12/C sample shows high rate capabilities and good cycling ability, delivering discharge capacities of 160.8 mAh/g at 5C. The superior high rate properties are ascribed to the specific nanostructures, which enables fast electronic and ionic transport by introducing carbon coating and decreasing the particle size of lithium titanate.

Super high-rate, long cycle life of europium-modified, carbon-coated, hierarchical mesoporous lithium-titanate anode materials for lithium ion batteries

2016 ◽  
Vol 4 (25) ◽  
pp. 9949-9957 ◽  
Author(s):  
Yanjun Cai ◽  
Yudai Huang ◽  
Wei Jia ◽  
Xingchao Wang ◽  
Yong Guo ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Anode Materials ◽  
Lithium Ion ◽  
Lithium Titanate ◽  
High Rate ◽  
Precipitation Method ◽  
Long Cycle Life ◽  
Carbon Coated ◽  
Co Precipitation

Li4−x/2Ti5−x/2EuxO12@C (x = 0.004) was prepared via the co-precipitation method. When cycled at 100 C, the discharge capacity stayed at 92.1 mA h g−1.

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).

Carbon-Coated Self-Assembled Ultrathin T-Nb2O5 Nanosheets for High-Rate Lithium-Ion Storage with Superior Cycling Stability

2020 ◽  
Vol 3 (12) ◽  
pp. 12037-12045
Author(s):  
Yang Li ◽  
Yan Wang ◽  
Guirong Cui ◽  
Tianyu Zhu ◽  
Jianfang Zhang ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Cycling Stability ◽  
High Rate ◽  
Ion Storage ◽  
Carbon Coated ◽  
Self Assembled ◽  
Superior Cycling Stability

scholarly journals Effective ion pathways and 3D conductive carbon networks in bentonite host enable stable and high-rate lithium–sulfur batteries

2021 ◽  
Vol 10 (1) ◽  
pp. 20-33
Author(s):  
Lian Wu ◽  
Yongqiang Dai ◽  
Wei Zeng ◽  
Jintao Huang ◽  
Bing Liao ◽  
...  
Keyword(s):  
Network Architecture ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Lithium Sulfur Batteries ◽  
Carbon Networks ◽  
Carbon Coated ◽  
Lithium Sulfur ◽  
Initial Capacity

Abstract Fast charge transfer and lithium-ion transport in the electrodes are necessary for high performance Li–S batteries. Herein, a N-doped carbon-coated intercalated-bentonite (Bent@C) with interlamellar ion path and 3D conductive network architecture is designed to improve the performance of Li–S batteries by expediting ion/electron transport in the cathode. The interlamellar ion pathways are constructed through inorganic/organic intercalation of bentonite. The 3D conductive networks consist of N-doped carbon, both in the interlayer and on the surface of the modified bentonite. Benefiting from the unique structure of the Bent@C, the S/Bent@C cathode exhibits a high initial capacity of 1,361 mA h g−1 at 0.2C and achieves a high reversible capacity of 618.1 m Ah g−1 at 2C after 500 cycles with a sulfur loading of 2 mg cm−2. Moreover, with a higher sulfur loading of 3.0 mg cm−2, the cathode still delivers a reversible capacity of 560.2 mA h g−1 at 0.1C after 100 cycles.

Bimolecular-induced hierarchical nanoporous LiTi2(PO4)3/C with superior high-rate and cycling performance

2017 ◽  
Vol 53 (62) ◽  
pp. 8703-8706 ◽  
Author(s):  
Wenwei Sun ◽  
Jiehua Liu ◽  
Xiaoqian Liu ◽  
Xiaojing Fan ◽  
Kuan Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Hydrothermal Reaction ◽  
Cycling Performance ◽  
High Rate ◽  
Carbon Coated

Carbon-coated hierarchical LiTi2(PO4)3 was synthesized by a facile bimolecular (glucose and DMEA) assisted hydrothermal reaction and a solid-state reaction, and exhibits excellent high-rate and cycling performance.

Carbon-coated LiFePO4–carbon nanotube electrodes for high-rate Li-ion battery

2018 ◽  
Vol 22 (7) ◽  
pp. 2247-2254 ◽  
Author(s):  
Le Thanh Nguyen Huynh ◽  
Thi Thuy Dung Tran ◽  
Hoang Hai Au Nguyen ◽  
Thi Thu Trang Nguyen ◽  
Van Man Tran ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Rate ◽  
Li Ion Battery ◽  
Carbon Coated ◽  
Li Ion

ChemInform Abstract: An Alginic Acid Assisted Rheological Phase Synthesis of Carbon Coated Li3V2(PO4)3with High-Rate Performance.

ChemInform ◽  
2014 ◽  
Vol 45 (43) ◽  
pp. no-no
Author(s):  
Yue Wu ◽  
Zhiyuan Tang ◽  
Xuyun Guo ◽  
Chenqiang Du ◽  
Xinhe Zhang
Keyword(s):  
Alginic Acid ◽  
High Rate ◽  
Rate Performance ◽  
Phase Synthesis ◽  
Carbon Coated ◽  
High Rate Performance
Sign in / Sign up

Export Citation Format

Share Document