Article history: Ammonium vanadate (NH V O ) nanowire ﬂowers and nanowires on titanium (Ti) foils are synthesized 4 4 10 Received 24 June 2015 by hexamethylenetetramine (HMTA)-assisted hydrothermal reactions as a cathode material for lithium- Received in revised form 4 November 2015 ion battery. The as-prepared NH V O nanowires are about 50 nm in diameter and several micrometers 4 4 10 Accepted 4 November 2015 in length. The effects of reaction time, temperature and additive concentration on the resulting mor- Available online 10 November 2015 phology are investigated. Reversible lithium intercalation behavior of the nanowires has been evaluated by cyclic voltammetry and galvanostatic discharge–charge cycling. The NH V O nanowires on Ti foil 4 4 10 Keywords: −1 −1 deliver a high discharge capacity of 168.5 mA h g after 100 cycles between 2.0 and 4.0 V at 50 mA g . Ammonium vanadate −1 A high rate capability is obtained with a remaining discharge capacity of about 182.6 mA h g after 35 Lithium-ion battery cycles at various rates. Further, the NH V O nanowires on Ti foil have a higher discharge capacity of 4 4 10 Nanowires −1 −1 330.5 mA h g after 100
Applied Surface Science – Elsevier
Published: Jan 1, 2016
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