TiO₂nanotubular arrays decorated with ultrafine Ag nanoseeds enabling a stable and dendrite-free lithium metal anode

Abstract

Dendrite-free lithium deposition for lithium metal anodes enabled by a 3D lithiophilic host of vertically aligned TiO2 nanotubular arrays decorated with Ag nanocrystals.

Review of Nanoarrays in Lithium Metal Anodes

“…(d) Schematic representation of the electrochemical deposition behavior shows that the 3D Ag@TNTAs/Ti scaffolds effectively regulate the Li deposition behavior and achieve uniform and reversible Li deposition. Reproduced with permission from ref . Copyright 2022 RCS.…”

“…Based on the wide application of carbon nanotubes in LMA, Li et al 117 utilized anodization combined with an impregnation approach to uniformly grow TiO 2 nanotube arrays on Ti foils and loaded ultrafine Ag nanocrystals on TiO 2 to prepare Ag@ TNTAs/Ti nanoarrays. This current collector would confine the Li plating inside the nanotube structure, thus allowing good suppression of volume expansion (Figure 3d).…”

Optimized lithium deposition on Ag nanoparticles-embedded TiO2 microspheres: a facile spray pyrolysis approach for enhanced lithium metal anode

“…The use of 3D host materials that combine TiO 2 and Ag nanoparticles for LMAs has been well studied. [33][34][35] However, to the best of our knowledge, this is the rst study to compare the lithium plating/stripping properties of different polymorphic forms of TiO 2 as a 3D scaffold and to optimize the amount of Ag nanoparticles as lithiophilic seeds. In this study, the synthesis of microspheres through spray pyrolysis resulted in the uniform and reversible deposition of lithium both inside and on the surface of the microspheres.…”