scholarly journals Enhancement of Thermal Stability and Cycling Performance of Lithium-Ion Battery at High Temperature by Nano-ppy/OMMT-Coated Separator

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Shuo Yang ◽  
Huiya Qin ◽  
Xuan Li ◽  
Huijun Li ◽  
Pei Yao
Keyword(s):  
Thermal Stability ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Internal Resistance ◽  
Covalent Bonds ◽  
Excellent Thermal Stability ◽  
Composite Separator ◽  
Hydrolysis Of ◽  
Coated Separator

Nanopolypyrrole/organic montmorillonite- (nano-ppy/OMMT-) coated separator is prepared by coating nano-ppy/OMMT on the surface of polyethylene (PE). Nano-ppy/OMMT-coated separator with three-dimensional and multilayered network structure is beneficial to absorb more organic electrolyte, enhancing the ionic conductivity (reach 4.31 mS·cm-1). Meanwhile, the composite separator exhibits excellent thermal stability and mechanical properties. The strong covalent bonds (Si-F) are formed by the nucleophilic substitution reaction between F−from the thermal decomposition and hydrolysis of LiPF6and the covalent bonds (Si-O) of nano-ppy/OMMT. The Si-F can effectively prevent the formation of HF, POF3, and LiF, resulting in the inhibition of the disproportionation of Mn3+in LiNi1/3Co1/3Mn1/3O2material as well as reducing the internal resistance of the cell. Therefore, the nano-ppy/OMMT-coated separator exhibits outstanding capacity retention and cycling performance at 80°C.

A porous diatomite ceramic separator for lithium ion batteries

2021 ◽  
Author(s):  
Dongni Li ◽  
Ye Li ◽  
Kuo Yang ◽  
Mingtao Ding ◽  
Hao Su ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Porous Structure ◽  
Lithium Ion Batteries ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Lithium Hydroxide ◽  
Lithium Silicate ◽  
Excellent Thermal Stability ◽  
Silicate Ceramic

Lithium silicate ceramic separator with porous structure is obtained by the reaction of diatomite and lithium hydroxide. The ceramic separator has excellent thermal stability, unique three-dimensional porous structure and active...

scholarly journals Lithium-Ion-Conducting Ceramics-Coated Separator for Stable Operation of Lithium Metal-Based Rechargeable Batteries

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 322
Author(s):  
Ryo Shomura ◽  
Ryota Tamate ◽  
Shoichi Matsuda
Keyword(s):  
Negative Electrode ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Rechargeable Batteries ◽  
Stable Operation ◽  
Lithium Metal ◽  
Interfacial Resistance ◽  
Metal Anode ◽  
Ion Conducting ◽  
Coated Separator

Lithium metal anode is regarded as the ultimate negative electrode material due to its high theoretical capacity and low electrochemical potential. However, the significantly high reactivity of Li metal limits the practical application of Li metal batteries. To improve the stability of the interface between Li metal and an electrolyte, a facile and scalable blade coating method was used to cover the commercial polyethylene membrane separator with an inorganic/organic composite solid electrolyte layer containing lithium-ion-conducting ceramic fillers. The coated separator suppressed the interfacial resistance between the Li metal and the electrolyte and consequently prolonged the cycling stability of deposition/dissolution processes in Li/Li symmetric cells. Furthermore, the effect of the coating layer on the discharge/charge cycling performance of lithium-oxygen batteries was investigated.

scholarly journals Structure and electrochemical performance modulation of a LiNi0.8Co0.1Mn0.1O2 cathode material by anion and cation co-doping for lithium ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (63) ◽  
pp. 36849-36857 ◽  
Author(s):  
Rong Li ◽  
Yong Ming ◽  
Wei Xiang ◽  
Chunliu Xu ◽  
Guilin Feng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Transition Metal Oxides ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Practical Application ◽  
Co Doping ◽  
Layered Transition Metal ◽  
Great Energy

Ni-rich layered transition metal oxides show great energy density but suffer poor thermal stability and inferior cycling performance, which limit their practical application.

Coaxially electrospun PAN/HCNFs@PVDF/UiO-66 composite separator with high strength and thermal stability for lithium-ion battery

2021 ◽  
Vol 311 ◽  
pp. 110724
Author(s):  
Qingshan Fu ◽  
Wei Zhang ◽  
Ismail Pir Muhammad ◽  
Xuedan Chen ◽  
Yue Zeng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Strength ◽  
Composite Separator

Co3Sn2/SnO2 nanocomposite loaded on Cu foam as high-performance three-dimensional anode for lithium-ion batteries

2019 ◽  
Vol 43 (3) ◽  
pp. 1238-1246 ◽  
Author(s):  
Duo Zhang ◽  
Chaoqi Bi ◽  
Qingliu Wu ◽  
Guangya Hou ◽  
Guoqu Zheng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Tin Dioxide ◽  
Three Dimensional ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Cu Foam ◽  
Low Rate

It is a challenge to commercialize tin dioxide-based anodes for lithium-ion batteries due to their low rate capability and poor cycling performance of the electrodes.

[email protected] as high-voltage lithium-ion battery cathode materials with improved cycling performance and thermal stability

2019 ◽  
Vol 327 ◽  
pp. 135018 ◽  
Author(s):  
Peipei Pang ◽  
Zheng Wang ◽  
Xinxin Tan ◽  
Yaoming Deng ◽  
Junmin Nan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Lithium Ion Battery ◽  
High Voltage ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Cycling Performance
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