Lithium ion diffusion mechanism in covalent organic framework based solid state electrolyte

2019 ◽  
Vol 21 (19) ◽  
pp. 9883-9888 ◽  
Author(s):  
Kecheng Zhang ◽  
Bingkai Zhang ◽  
Mouyi Weng ◽  
Jiaxin Zheng ◽  
Shunning Li ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Mechanism ◽  
Lithium Ion ◽  
One Dimension ◽  
Ion Diffusion ◽  
Solid State Electrolyte ◽  
Covalent Organic Framework ◽  
System P ◽  
Lithium Ion Diffusion ◽  
Organic Framework

Mechanism of Li-ions diffusion in a one-dimension tunnel of COF-5 and structure of the COF-5@LiClO4@THF system.

Cationic covalent organic framework based all-solid-state electrolytes

2020 ◽  
Vol 4 (4) ◽  
pp. 1164-1173 ◽  
Author(s):  
Zhen Li ◽  
Zhi-Wei Liu ◽  
Zhen-Jie Mu ◽  
Chen Cao ◽  
Zeyu Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Li Ion Battery ◽  
Covalent Organic Framework ◽  
Li Ion ◽  
Lithium Ion Conductivity ◽  
Organic Framework

Two new imidazolium-based cationic COFs were synthesized and employed as all-solid electrolytes, and exhibited high lithium ion conductivity at high temperature. The assembled Li-ion battery displays preferable battery performance at 353 K.

A Truxenone‐based Covalent Organic Framework as an All‐Solid‐State Lithium‐Ion Battery Cathode with High Capacity

2020 ◽  
Vol 132 (46) ◽  
pp. 20565-20569
Author(s):  
Xiye Yang ◽  
Yiming Hu ◽  
Nathan Dunlap ◽  
Xubo Wang ◽  
Shaofeng Huang ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Battery ◽  
High Capacity ◽  
Lithium Ion ◽  
Covalent Organic Framework ◽  
Organic Framework

scholarly journals Effects of Mg Doping at Different Positions in Li-Rich Mn-Based Cathode Material on Electrochemical Performance

Nanomaterials ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 156
Author(s):  
Elena Makhonina ◽  
Lidia Pechen ◽  
Anna Medvedeva ◽  
Yury Politov ◽  
Aleksander Rumyantsev ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Solid State Reaction ◽  
Lithium Ion ◽  
Layered Oxides ◽  
Ion Diffusion ◽  
Capacity Fading ◽  
Mg Doping ◽  
Voltage Decay ◽  
Lithium Ion Diffusion

Li-rich Mn-based layered oxides are among the most promising cathode materials for next-generation lithium-ion batteries, yet they suffer from capacity fading and voltage decay during cycling. The electrochemical performance of the material can be improved by doping with Mg. However, the effect of Mg doping at different positions (lithium or transition metals) remains unclear. Li1.2Mn0.54Ni0.13Co0.13O2 (LR) was synthesized by coprecipitation followed by a solid-state reaction. The coprecipitation stage was used to introduce Mg in TM layers (sample LR-Mg), and the solid-state reaction (st) was used to dope Mg in Li layers (LR-Mg(st)). The presence of magnesium at different positions was confirmed by XRD, XPS, and electrochemical studies. The investigations have shown that the introduction of Mg in TM layers is preferable in terms of the electrochemical performance. The sample doped with Mg at the TM positions shows better cyclability and higher discharge capacity than the undoped sample. The poor electrochemical properties of the sample doped with Mg at Li positions are due to the kinetic hindrance of oxidation of the manganese-containing species formed after activation of the Li2MnO3 component of the composite oxide. The oxide LR-Mg(st) demonstrates the lowest lithium-ion diffusion coefficient and the greatest polarization resistance compared to LR and LR-Mg.

New Insights into the Lithium-Ion Diffusion Mechanism in Vanadate Compounds

2021 ◽  
pp. 886-892
Author(s):  
Yinsheng Xu ◽  
Zhengnan Wang ◽  
Zhigao Yang ◽  
Jongbeom Na ◽  
Alowasheeir Azhar ◽  
...  
Keyword(s):  
Diffusion Mechanism ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Lithium Ion Diffusion
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