Details

Autor(en) / Beteiligte

• Xu, Xue-liu
• Li, Guang-zhong
• Fu, Ze-wei
• Hu, Jun-tao
• Luo, Zhi-ping
• Hua, Kang
• Lu, Xue-qin
• Fang, Dong
• Bao, Rui
• Yi, Jian-hong

Titel

Hydrogen reduced sodium vanadate nanowire arrays as electrode material of lithium-ion battery

Ist Teil von

• Journal of Central South University, 2019-06, Vol.26 (6), p.1540-1549

Ort / Verlag

Changsha: Central South University

Erscheinungsjahr

2019

Quelle

SpringerLink

Beschreibungen/Notizen

• Vanadates and vanadium oxides are potential lithiumion electrode materials because of their easy preparation and high capacity properties. This paper reports the electrochemical lithium-storage performance of VO 2 and NaV 2 O 5 composite nanowire arrays. Firstly, Na 5 V 12 O 32 nanowire arrays are fabricated by a hydrothermal method, and then VO 2 and NaV 2 O 5 composite nanowire arrays are prepared by a reduction reaction of Na 5 V 12 O 32 nanowire arrays in hydrogen atmosphere. Crystal structure, chemical composition and morphology of the prepared samples are characterized in detail. The obtained composite is used as an electrode of a lithium-ion battery, which exhibits high reversible capacity and good cycle stability. The composite obtained at 500 °C presents a specific discharge capacity up to 345.1 mA × h/g after 50 cycles at a current density of 30 mA/g.