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Zheng J, Liu L, Ji G, et al. Hydrogenated Anatase TiO2 as Lithium-Ion Battery Anode: Size-Reactivity Correlation. ACS Appl Mater Interfaces. 2016;8(31):20074-81doi: 10.1021/acsami.6b05993.
Zheng, J., Liu, L., Ji, G., Yang, Q., Zheng, L., & Zhang, J. (2016). Hydrogenated Anatase TiO2 as Lithium-Ion Battery Anode: Size-Reactivity Correlation. ACS applied materials & interfaces, 8(31), 20074-81. https://doi.org/10.1021/acsami.6b05993
Zheng, Jing, et al. "Hydrogenated Anatase TiO2 as Lithium-Ion Battery Anode: Size-Reactivity Correlation." ACS applied materials & interfaces vol. 8,31 (2016): 20074-81. doi: https://doi.org/10.1021/acsami.6b05993
Zheng J, Liu L, Ji G, Yang Q, Zheng L, Zhang J. Hydrogenated Anatase TiO2 as Lithium-Ion Battery Anode: Size-Reactivity Correlation. ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20074-81. doi: 10.1021/acsami.6b05993. Epub 2016 Aug 01. PMID: 27434151.
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ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20074-81. doi: 10.1021/acsami.6b05993. Epub 2016 Aug 01.

Hydrogenated Anatase TiO2 as Lithium-Ion Battery Anode: Size-Reactivity Correlation.

ACS applied materials & interfaces

Jing Zheng, Lei Liu, Guangbin Ji, Qifan Yang, Lirong Zheng, Jing Zhang

Affiliations

  1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics , Nanjing 210016, P. R. China.
  2. Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P. R. China.

PMID: 27434151 DOI: 10.1021/acsami.6b05993

Abstract

An improved hydrogenation strategy for controllable synthesis of oxygen-deficient anatase TiO2 (H-TiO2) is performed via adjusting the particle size of starting rectangular anatase TiO2 nanosheets from 90 to 30 nm. The morphology and structure characterizations obviously demonstrate that the starting materials of TiO2 nanosheets are transformed into nanoparticles with distinct size reduction; meanwhile, the concentration of oxygen vacancy is gradually increased with the decreasing particle size of starting TiO2. As a result, the Li-storage performance of H-TiO2 is not only much better than that of the pure TiO2 but also elevated stage by stage with the decreasing particle size of starting TiO2; especially the H-TiO2 with highest concentration of oxygen vacancy from smallest TiO2 nanosheets shows the best Li-storage performance with a stable discharge capacity 266 mAh g(-1) after 100 cycles at 1 C. Such excellent performance should be attributed to the joint action from oxygen vacancy and size effect, which promises significant enhancement of high electronic conductivity without weakening Li(+) diffusion via hydrogenation strategy.

Keywords: anatase TiO2 nanosheets; anode materials; controllable oxygen vacancy; hydrogenation process; lithium-ion battery; size−reactivity correlation

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