Superior Sodium Metal Anodes Enabled by 3D Hierarchical Metallic Scaffolds with Enhanced Sodiophilicity

Abstract Sodium‐metal batteries (SMBs) are regarded as key for next‐generation energy storage due to their high theoretical energy and potential cost effectiveness. However, Na‐metal systems remain challenging by critical barriers, including severe Na dendrites growth and infinite huge volume change, which limit the feasibility of SMBs. Here, this work develops a 3D conductive scaffold consisting of vertical crystalline TiO 2 nanotube arrays embedded with ultrafine silver nanoparticles (denoted as Ag@TiO 2 NTAs) with ultrasonication‐assisted in situ deposition method for high‐performance SMBs. Significantly, the hierarchical hollow nanotubes with large surface area can reduce the current density to promote…

• NN
  National Natural Science Foundation of China

  Awards: 52102331, 52125105, 52372250
• NK
  National Key Research and Development Program of China

  Award: 2022YFB2402600
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2024A1515030076