scholarly journals Effect of Ti-doping and Octahedral Morphology on Electrochemical Performance of Lithium Manganate Oxide as Cathode Materials for LIBs

2021 ◽  
pp. ArticleID:210933
Author(s):  
Yongfeng Li ◽  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Lithium Manganate ◽  
Ti Doping

Improved structural and electrochemical performances of LiNi0.5Mn1.5O4 cathode materials by Cr3+ and/or Ti4+ doping

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99856-99865 ◽  
Author(s):  
Li Wang ◽  
Dan Chen ◽  
Jiangfeng Wang ◽  
Guijuan Liu ◽  
Wei Wu ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Rate Capability ◽  
Cycling Stability ◽  
Electrochemical Performances ◽  
Ion Diffusion ◽  
Ti Doping ◽  
Co Doped

The Cr and/or Ti doping leads to the enhanced rate capability and cycling stability. The co-doped sample exhibits the optimal electrochemical performance due to the presence of appropriate Mn3+ content and higher Li+ ion diffusion coefficient.

scholarly journals Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xing Shen ◽  
Quan Zhou ◽  
Miao Han ◽  
Xingguo Qi ◽  
Bo Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Mechanochemical Synthesis ◽  
Cathode Materials ◽  
Industrial Application ◽  
Synthesis Process ◽  
In Situ Fabrication ◽  
Stationary Energy ◽  
Carbon Coated

AbstractNa-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na3(VOPO4)2F nanocomposite exhibits capacity of 142 mAh g−1 at 0.1C, higher than its theoretical capacity (130 mAh g−1). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.

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