A Novel High‐Performance TiO2‐x/TiO1‐yNy Coating Material for Silicon Anode in Lithium‐Ion Batteries
7. Clean energy
01 natural sciences
0104 chemical sciences
DOI:
10.1002/smtd.202200430
Publication Date:
2022-05-26T08:59:34Z
AUTHORS (8)
ABSTRACT
Protective surface coatings on Si anodes are promising for improving the electrochemical performance of lithium-ion batteries (LIBs). Nevertheless, most coating materials have severe issues, including low initial coulombic efficiency, structural fracture, morphology control, and complicated synthetic processing. In this study, a multifunctional TiO2-x /TiO1-y Ny (TTN) formed via facile scalable process is applied as material anodes. A thin layer amorphous TiO2 uniformly coated onto nanoparticles by simple sol-gel method then converted into two phase nitridation. The lithiated provides high ionic electrical conductivity, while TiO1-y can improve mechanical strength that alleviates volume change to address capacity fading issue. Owing these synergetic advantages, -coated (Si@TTN) exhibits excellent properties, charge 1650 mA h g-1 at 0.1 84% retention after 100 cycles 1 . Moreover, significantly enhanced rate be achieved current density. This investigation presents effective use high-capacity silicon anode in emerging technology LIBs.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (38)
CITATIONS (14)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....