biostudies-literatureJian LNational Natural Science Foundation of China472https://www.ebi.ac.uk/biostudies/studies/S-EPMC10934241biostudies-literatureUnknown14(5)Aqueous aluminum-ion batteries (AIBs) have great potential as devices for future large-scale energy storage systems due to the cost efficiency, environmentally friendly nature, and impressive theoretical energy density of Al. However, currently, available materials used as anodes for aqueous AIBs are scarce. In this study, a novel sol-gel method was used to synthesize nitrogen-doped titanium dioxide (N-TiO₂) as a potential anode material for AIBs in water. The annealed N-TiO₂ showed a high discharge capacity of 43.2 mAh g^-1 at a current density of 3 A g^-1. Analysis of the electrode kinetics revealed that the N-TiO₂ anodes exhibited rapid diffusion of aluminum ions, low resistance to charge transfer, and high electronic conductivity, enNanomaterials (Basel, Switzerland)Enhanced Aluminum-Ion Storage Properties of N-Doped Titanium Dioxide Electrode in Aqueous Aluminum-Ion Batteries.PMC1093424152362029Jian LLiu PDeng JZhao FWang FLi RYao QLiu DWu XfalseEnhanced Aluminum-Ion Storage Properties of N-Doped Titanium Dioxide Electrode in Aqueous Aluminum-Ion Batteries.Aqueous aluminum-ion batteries (AIBs) have great potential as devices for future large-scale energy storage systems due to the cost efficiency, environmentally friendly nature, and impressive theoretical energy density of Al. However, currently, available materials used as anodes for aqueous AIBs are scarce. In this study, a novel sol-gel method was used to synthesize nitrogen-doped titanium dioxide (N-TiO₂) as a potential anode material for AIBs in water. The annealed N-TiO₂ showed a high discharge capacity of 43.2 mAh g^-1 at a current density of 3 A g^-1. Analysis of the electrode kinetics revealed that the N-TiO₂ anodes exhibited rapid diffusion of aluminum ions, low resistance to charge transfer, and high electronic conductivity, en2024-01-01T00:00:00Z2024 Mar2025-04-26T14:18:43.913Z2025-04-06T14:31:05.331ZS-EPMC109342413847080110.3390/nano14050472