Growing Sodiophilic ZnO Nanorod Arrays on Al Substrate for High-Energy-Density Anode-Free Na Batteries.

ABSTRACT: Anode-free Na batteries maximize energy density but suffer from poor cycling performance originating from the uncontrolled Na growth and large volume change. Herein, we report dense ZnO nanorod arrays on Al foil (D-ZnO NRAs/Al) synthesized by electrodeposition and low-temperature heat treatment methods as a lightweight current collector for selective nucleation and homogeneous plating of Na. The nanorod arrays not only offer abundant interspace to reduce structural stress and enable high Na plating but also promote uniform Na deposition by manipulating Na⁺ ion flux and reducing local current density. In addition, the sufficient sodiophilic active sites minimize nucleation barriers and serve as preferred nucleation sites, thereby homogenizing Na nucleation and growth. As expected

SUBMITTER: An Y 

PROVIDER: S-EPMC12715786 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature