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Ventosa Arbaizar, Edgar Xia, Wei Klink, Stefan La Mantia, Fabio Mei, Bastian Muhler, Martin Schuhmann, Wolfgang 2026-02-17T08:58:05Z 2026-02-17T08:58:05Z 2013-10 0947-6539 https://hdl.handle.net/10259/11373 10.1002/chem.201302306 1521-3765 Improving the chemical diffusion of Li ions in anatase TiO2 is essential to enhance its rate capability as a negative electrode for Li-ion batteries. Ammonia annealing has been used to improve the rate capability of Li4Ti5O12. Similarly, ammonia annealing improves the Li-ion storage performance of anatase TiO2 in terms of the stability upon cycling and the C-rate capability. In order to distinguish whether N doping or oxygen deficiencies, both introduced upon ammonia annealing, are more relevant for the observed improvement, a systematic electrochemical study was performed. The results suggest that the creation of oxygen vacancies upon ammonia annealing is the main reason for the improvement of the stability and C-rate capability. Financial support by the BMBF in the framework of the project “Elek-trochemie und Mobilität-Kompetenzverbund Nord (KVN; FKZ:13N9973), the DFG SPP1473 (Schu929/11–1) and the NRW program forfunding of the Center of Electrochemical Sciences-CES is gratefully ac-knowledged application/pdf eng Wiley Chemistry. A European Journal. 2013, V. 19, n. 42, p. 14194-14199 https://doi.org/10.1002/chem.201302306 High C rate Lithium-ion battery Nitrogen dopant Oxygen deficiency Titanium dioxide Química Química analítica Chemistry Chemistry, Analytic Ammonia‐Annealed TiO2 as a Negative Electrode Material in Li‐Ion Batteries: N Doping or Oxygen Deficiency? info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess Chemistry. A European Journal 19 42 14194 14199