2026-06-22T14:11:21Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/113732026-02-18T01:05:42Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823

Ammonia‐Annealed TiO2 as a Negative Electrode Material in Li‐Ion Batteries: N Doping or Oxygen Deficiency? Ventosa Arbaizar, Edgar Xia, Wei Klink, Stefan La Mantia, Fabio Mei, Bastian Muhler, Martin Schuhmann, Wolfgang High C rate Lithium-ion battery Nitrogen dopant Oxygen deficiency Titanium dioxide 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. 2026-02-17T08:58:05Z 2026-02-17T08:58:05Z 2026-02-17T08:58:05Z 2013-10 info:eu-repo/semantics/article 0947-6539 https://hdl.handle.net/10259/11373 10.1002/chem.201302306 1521-3765 eng Chemistry. A European Journal. 2013, V. 19, n. 42, p. 14194-14199 https://doi.org/10.1002/chem.201302306 info:eu-repo/semantics/openAccess Wiley