biostudies-literatureAutthawong TKyoto UniversityChiang Mai UniversityMinistry of Education, Culture, Sports, Science and Technology43811-43824https://www.ebi.ac.uk/biostudies/studies/S-EPMC9058323biostudies-literatureUnknown10(71)Emerging technologies demand a new generation of lithium-ion batteries that are high in power density, fast-charging, safe to use, and have long cycle lives. This work reports charging rates and specific capacities of TiO₂(B)/N-doped graphene (TNG) composites. The TNG composites were prepared by the hydrothermal method in various reaction times (3, 6, 9, 12, and 24 h), while the N-doped graphene was synthesized using the modified Hummer's method followed by a heat-treatment process. The different morphologies of TiO₂ dispersed on the N-doped graphene sheet were confirmed as anatase-nanoparticles (3, 6 h), TiO₂(B)-nanotubes (9 h), and TiO₂(B)-nanorods (12, 24 h) by XRD, TEM, and EELS. In electrochemical studies, the best battery performance was obtained with the nanorods TiO₂(B)/N-doped graphene (TNG-24h) electrode, with a relatively high specific capacity of 500 mA h g^-1 at 1C (539.5 mA g^-1). In long-term cycling, excellent stability was observed. The capacity retention of 150 mA h g^-1 was observed after 7000 cycles, at an ultrahigh current of 50C (27.0 A g^-1). The synthesized composites have the potential for fast-charging and have high stability, showing potential as an anode material in advanced power batteries for next-generation applications.RSC advancesUltrafast-charging and long cycle-life anode materials of TiO₂-bronze/nitrogen-doped graphene nanocomposites for high-performance lithium-ion batteries.PMC90583232019-69JPMXP09A19KT0019Kiyomura TSarakonsri TAutthawong THaruta MChimupala YKurata HYu ASChairuangsri TfalseUltrafast-charging and long cycle-life anode materials of TiO₂-bronze/nitrogen-doped graphene nanocomposites for high-performance lithium-ion batteries.Emerging technologies demand a new generation of lithium-ion batteries that are high in power density, fast-charging, safe to use, and have long cycle lives. This work reports charging rates and specific capacities of TiO₂(B)/N-doped graphene (TNG) composites. The TNG composites were prepared by the hydrothermal method in various reaction times (3, 6, 9, 12, and 24 h), while the N-doped graphene was synthesized using the modified Hummer's method followed by a heat-treatment process. The different morphologies of TiO₂ dispersed on the N-doped graphene sheet were confirmed as anatase-nanoparticles (3, 6 h), TiO₂(B)-nanotubes (9 h), and TiO₂(B)-nanorods (12, 24 h) by XRD, TEM, and EELS. In electrochemical studies, the best battery performance was obtained with the nanorods TiO₂(B)/N-doped graphene (TNG-24h) electrode, with a relatively high specific capacity of 500 mA h g^-1 at 1C (539.5 mA g^-1). In long-term cycling, excellent stability was observed. The capacity retention of 150 mA h g^-1 was observed after 7000 cycles, at an ultrahigh current of 50C (27.0 A g^-1). The synthesized composites have the potential for fast-charging and have high stability, showing potential as an anode material in advanced power batteries for next-generation applications.2020-01-01T00:00:00Z2020 Nov2025-04-04T20:22:27.441Z2025-04-04T20:22:27.441ZS-EPMC90583233551967310.1039/d0ra07733j