Facile and elegant self-organization of Ag nanoparticles and TiO sub(2) nanorods on V sub(2)O sub(5) nanosheets as a superior cathode material for lithium-ion batteries

• Published in: Journal of materials chemistry. A, Materials for energy and sustainability Vol. 4; no. 13; pp. 4900 - 4907
• Main Authors: Yan, Du-Juan, Zhu, Xiao-Dong, Wang, Ke-Xin, Gao, Xiao-Tian, Feng, Yu-Jie, Sun, Ke-Ning, Liu, Yi-Tao
• Format: Journal Article
• Language: English
• Published: 01.03.2016
• Subjects: Architecture; Cathodes; Lithium-ion batteries; Nanorods; Nanostructure; Silver; Titanium dioxide; Vanadium pentoxide
• ISSN: 2050-7488; 2050-7496
• DOI: 10.1039/c6ta01417h

To address the deficiencies of poor electronic conductivity and strong tendency towards aggregation suffered by V sub(2)O sub(5) nanosheets, here we propose a facile and elegant self-organization strategy to decorate them simultaneously with Ag nanoparticles and TiO sub(2) nanorods, resulting in novel two-dimensional hybrid architectures. The addition of TiO sub(2) is able to enhance the Li super(+) intercalation rate and capacity of V sub(2)O sub(5), while the introduction of Ag is capable of allowing for efficient electron transport from the current collector to the electrode. Moreover, the two dopants can effectively isolate the V sub(2)O sub(5) nanosheets from restacking, thereby preserving the electroactive surface areas from being sacrificed. The resulting two-dimensional hybrid architectures exhibit synergistic superiorities in reversible capacity, rate capability and cycle stability over neat V sub(2)O sub(5) nanosheets, and hold great promise as a cathode material of lithium-ion batteries.