Enhanced electrochemical properties and thermal stability of Zr4+ doped Li1.20Mn0.54Ni0.13Co0.13O2 cathode material by a Li ion conductor of Li3PO4 surface coating

2020 ◽  
Vol 521 ◽  
pp. 146338 ◽  
Author(s):  
Yi Lu ◽  
Fan Yang ◽  
Geoff G.X. Wang ◽  
Shiliang Shi ◽  
Yilun Liu
Keyword(s):  
Thermal Stability ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Surface Coating ◽  
Ion Conductor ◽  
Li Ion ◽  
Thermal Stability Of

scholarly journals Electrochemical Performance and Thermal Stability of Iron Oxyfluoride (FeOF) for Sodium-Ion Batteries

Batteries ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 68
Author(s):  
Ayuko Kitajou ◽  
Liwei Zhao ◽  
Rintaro Nagano ◽  
Atsushi Inoishi ◽  
Eiji Kobayashi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Cathode Material ◽  
Li Ion Batteries ◽  
Scanning Calorimetry ◽  
Capacity Retention ◽  
Voltage Range ◽  
Initial Discharge ◽  
Toxic Risk ◽  
Li Ion ◽  
Thermal Stability Of

Self-synthesized rutile iron oxyfluoride (FeOF) was studied as a cathode material for Na-ion batteries. The highly crystalline FeOF provided an initial discharge capacity of 246 mAh g−1 in a voltage range of 1.0–4.0 V, followed by 88% of capacity retention after 20 cycles. This discharge-charge reaction of FeOF between 0.8 and 4.0 V are advanced by the Fe2+/Fe3+ redox reaction. That is, no conversion reaction was involved in the application of FeOF as a cathode material for Na-ion batteries because of the low potential of Na-insertion. In addition, the structure change of FeOF from rutile to cubic during Na ion insertion, which was similar to that in Li-ion batteries. No remarkable HF release was detected even up to 700 °C, indicating a low toxic risk of the FeOF cathode. The thermal properties of sodiated and desodiated FeOF electrodes in the associated electrolyte were investigated by DSC (Differential scanning calorimetry) up to 500 °C. Sodiated FeOF electrodes showed larger exothermic heat generation than desodiated ones, especially at a temperature higher than 380 °C. Finally, the thermal stability of FeOF cathodes in the associated Li- and Na-ion battery electrolytes was quantitatively compared with variations of the electrode/electrolyte ratio.

Improving structural and thermal stability of LiNi0.8Co0.15Al0.05O2 by a fast-ionic-conductive LiAlSiO4 surface coating for Li-ion batteries

2021 ◽  
pp. 138620
Author(s):  
Manojkumar Seenivasan ◽  
Chun–Chen Yang ◽  
She-huang Wu ◽  
Ying-Jeng Jame Li ◽  
Wen-Chen Chien ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Surface Coating ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Thermal Stability Of
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