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00925njm 22002777a 4500 dc Ventosa Arbaizar, Edgar author Xia, Wei author Klink, Stefan author La Mantia, Fabio author Mei, Bastian author Muhler, Martin author Schuhmann, Wolfgang author 2013-10 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. 0947-6539 https://hdl.handle.net/10259/11373 10.1002/chem.201302306 1521-3765 High C rate Lithium-ion battery Nitrogen dopant Oxygen deficiency Titanium dioxide Ammonia‐Annealed TiO2 as a Negative Electrode Material in Li‐Ion Batteries: N Doping or Oxygen Deficiency?