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With the rapid development of electric vehicles, Ni-based cathodes attract increasing attention as used in power batteries due to their high capacity and low cost. However, Ni-based cathodes are faced with several problems, such as Li/Ni disorder, cycle capacity degrading, poor storage in air, and thermal instability. This review carefully compared the structure difference between LiNiO2 and LiCoO...
A thin composite separator with polyethylene terephthalate nonwoven membrane as the structural support and polyvinylidene fluoride-hexafluoropropylene as the coating layer for lithium-ion batteries was prepared by a simple dip-coating process. The effect of different drying temperatures on the performance of the composite separator was investigated. The results indicate that 80 °C is the optimal drying...
Separators have garnered substantial attention from researchers and developers in regard to their crucial role in the safety of lithium-ion batteries. In this study, a composite separator was prepared by coating cubic Al2O3 nanoparticles on non-woven poly(ethylene terephthalate) (PET) via a simple dip-coating process. The basic properties of the Al2O3-coated PET non-woven composite separator were...
TiO2-reduced graphene oxide (RGO) composite was synthesized via a sol-gel process and investigated as an anode material for sodium-ion batteries (SIBs). A remarkable improvement in sodium ion storage with a reversible capacity of 227 mAh g−1 after 50 cycles at 50 mA g−1 is achieved, compared to that (33 mAh g−1) for TiO2. The enhanced electrochemical performance of TiO2-RGO composite is attributed...
Spinel structured Li4Ti5O12 was synthesized by a solid-state method using TiO2 and Li2CO3 as starting materials. High-energy ball milling was used to obtain the Li2CO3 samples with different particle size. Then, the effects of Li2CO3 particle size on the structure, morphology, and electrochemical performance of Li4Ti5O12 samples were investigated in detail. The samples were characterized by TG/DTA...
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