Facile and scalable aerosol-assisted self-assembly of mesoporous Li4Ti5O12/C hollow spheres for lithium-ion batteries

Capacity Loss Mechanism of the Li4Ti5O12 Microsphere Anode of Lithium-Ion Batteries at High Temperature and Rate Cycling Conditions

“…33 The SEM image (Figure 1b) shows that the LTO particles are composed of primary nanoparticles and the size of the secondary spheres is around 1 μm, which can also be seen in the transmission electron microscopy (TEM) image (Figure S1). Different from the loosely packed structures as reported in previous literature, 34 the LTO microspheres obtained in the present study are densely stacked, and the high-tap LTO is helpful in improving the volumetric energy density for LIBs. Figure 1c,d shows the cycling performance and Coulombic efficiency of the LTO half cells cycled at different temperatures (25,45, and 60 °C) and charge/discharge rates (1 C and 5 C).…”

Preparation of Carbon Nanotube Coated Li4Ti5O12 Nanosheets Heterostructure as Ultrastable Anodes for Lithium-Ion Batteries

“…Herein, we have employed a precursor-morphology-controlled conversion strategy to successfully fabricate hierarchical heterostructures with LTO nanosheets anchored on carbon nanotubes, denoted as CNT@LTO. Although there exist many reported CNT/LTO composites, mainly constructed by mixing the LTO nanoparticles and CNTs, ,,, it still remains challenging to grow directly LTO nanosheets uniformly on CNTs. In this work, facile fabrication of LTO nanosheets grown directly on CNTs was achieved by first growing a sheath of layered hydrogen titanate (LHT) nanosheets on a CNT backbone, , followed by hydrothermal reaction in LiOH solution to convert into lithium titanate oxide hydrate (H-LTO) nanosheets, which can become the LTO nanosheets via thermal decomposition .…”