Accelerated lithium-ion conduction in covalent organic frameworks

2020 ◽  
Vol 56 (72) ◽  
pp. 10465-10468
Author(s):  
Li Sheng ◽  
Li Wang ◽  
Jianlong Wang ◽  
Hong Xu ◽  
Xiangming He
Keyword(s):  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Covalent Organic Frameworks ◽  
Ion Conduction ◽  
Covalent Organic Framework ◽  
Lithium Ion Conduction ◽  
Organic Framework

We design a porous separator that consists of a covalent organic framework (COF), the ionic conductivity of which is 8 times higher than that of the most well-established separator of lithium-ion batteries.

scholarly journals Surface controlled pseudo-capacitive reactions enabling ultra-fast charging and long-life organic lithium ion batteries

2020 ◽  
Vol 4 (8) ◽  
pp. 4179-4185 ◽  
Author(s):  
Kamran Amin ◽  
Jianqi Zhang ◽  
Hang-Yu Zhou ◽  
Ruichiao Lu ◽  
Miao Zhang ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Covalent Organic Framework ◽  
Fast Charging ◽  
Long Life ◽  
Organic Framework

To develop ultra-fast charging and long-life lithium ion batteries, a surface-controlled pseudo-capacitive reaction mechanism for organic lithium ion batteries is developed based on a coaxial nanocomposite of an active anthraquinone-based covalent organic framework and CNTs.

Covalent organic framework-regulated ionic transportation for high-performance lithium-ion batteries

2019 ◽  
Vol 7 (46) ◽  
pp. 26540-26548 ◽  
Author(s):  
Yucheng Wen ◽  
Xianshu Wang ◽  
Yan Yang ◽  
Mingzhu Liu ◽  
Wenqiang Tu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Transition Metal Ions ◽  
Ion Migration ◽  
Covalent Organic Framework ◽  
Polymer Separator ◽  
Organic Framework

A polymer separator modified with a covalent organic framework can effectively accelerate lithium ion migration and immobilize transition metal ions.

A 2D covalent organic framework as a high-performance cathode material for lithium-ion batteries

Nano Energy ◽  
2020 ◽  
Vol 70 ◽  
pp. 104498 ◽  
Author(s):  
Manman Wu ◽  
Yang Zhao ◽  
Binqiao Sun ◽  
Zhenhe Sun ◽  
Chenxi Li ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Covalent Organic Framework ◽  
Organic Framework

scholarly journals The Synthesis of a Covalent Organic Framework from Thiophene Armed Triazine and EDOT and Its Application as Anode Material in Lithium-Ion Battery

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3300
Author(s):  
Shuang Chen ◽  
Shukun Wang ◽  
Xin Xue ◽  
Jinsheng Zhao ◽  
Hongmei Du
Keyword(s):  
Composite Material ◽  
Band Gap ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Carbon Powder ◽  
Covalent Organic Framework ◽  
Organic Framework

As a class of redox active materials with some preferable properties, including rigid structure, insoluble characters, and large amounts of nitrogen atoms, covalent triazine frameworks (CTFs) have been frequently adopted as electrode materials in Lithium-ion batteries (LIBs). Herein, a triazine-based covalent organic framework employing 3,4-ethylenedioxythiophene (EDOT) as the bridging unit is synthesized by the presence of carbon powder through Stille coupling reaction. The carbon powder was added in an in-situ manner to overcome the low intrinsic conductivity of the polymer, which led to the formation of the polymer@C composite (PTT-O@C, PTT-O is a type of CTFs). The composite material is then employed in LIBs as anode material. The designed polymer shows a narrow band gap of 1.84 eV, proving the effectiveness of the nitrogen-enriched triazine unit in reducing the band gap of the resultant polymers. The CV results showed that the redox potential of the composite (vs. Li/Li+) is around 1.0 V, which makes it suitable to be used as the anode material in lithium-ion batteries. The composite material could exhibit the stable specific capacity of 645 mAh/g at 100 mA/g and 435 mAh/g at 500 mA/g, respectively, much higher than the pure carbon materials, indicating the good reversibility of the material. This work provides some additional information on electrochemical performance of the triazine and EDOT based CTFs, which is helpful for developing a deep understanding of the structure–performance correlations of the CTFs as anode materials.

A Microporous Covalent-Organic Framework with Abundant Accessible Carbonyl Groups for Lithium-Ion Batteries

2018 ◽  
Vol 130 (30) ◽  
pp. 9587-9590 ◽  
Author(s):  
Zhiqiang Luo ◽  
Luojia Liu ◽  
Jiaxin Ning ◽  
Kaixiang Lei ◽  
Yong Lu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbonyl Groups ◽  
Covalent Organic Framework ◽  
Organic Framework

A Microporous Covalent-Organic Framework with Abundant Accessible Carbonyl Groups for Lithium-Ion Batteries

2018 ◽  
Vol 57 (30) ◽  
pp. 9443-9446 ◽  
Author(s):  
Zhiqiang Luo ◽  
Luojia Liu ◽  
Jiaxin Ning ◽  
Kaixiang Lei ◽  
Yong Lu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbonyl Groups ◽  
Covalent Organic Framework ◽  
Organic Framework
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