Acetonitrile mediated facile synthesis and self-assembly of silver vanadate nanowires into 3D spongy-like structure as a cathode material for lithium ion battery

作者：Klockner, W.; Yadav, R. M.; Yao, J.; Lei, S.; Aliyan, A.; Wu, J.; Marti, A. A.; Vajtai, R.; Ajayan, P. M.; Denardin, J. C.; Serafini, D.; Melo, F.; Singh, D. P.^*

来源：Journal of Nanoparticle Research, 2017, 19(8): 288.

DOI：10.1007/s11051-017-3983-7

• Silver vanadate
• Self-assembly
• Acetonitrile
• AgVO3
• 3D structures
• Lithium ion battery
• Energy storage

We report the facile, one-step acetonitrile-mediated synthesis and self-assembly of beta-AgVO3 nanowires into three-dimensional (3D) porous spongy-like hydrogel (similar to 4 cm diameter) as cathode material for lithium ion battery of high performance and long-term stability. 3D structures made with superlong, very thin, and monoclinic beta-AgVO3 nanowires exhibit high specific discharge capacities of 165 mAh g(-1) in the first cycle and 100 mAh g(-1) at the 50th cycle, with a cyclic capacity retention of 53% at a current density of 50 mA g(-1). 3D structures are synthesized by reaction between ammonium vanadate and silver nitrate solution containing 5 mL of acetonitrile followed by a hydrothermal treatment at 200 degrees C for 12 h. Acetonitrile (used here for the first time in the silver vanadate synthesis) plays an important role in the self-assembly of the silver vanadate nanowires. A tentative growth mechanism for the 3D structure and lithium ions intercalation into beta-AgVO3 nanowires has been discussed and described.

• 出版日期2017-8-15
• 单位重庆大学