Synthesis, Characterization, and Electrochemical Properties of Cu₃V₂O₇(OH)₂·2H₂O Nanostructures

Abstract

We report on the shape-controlled synthesis, characterization, and electrochemical properties of Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanomaterials that were synthesized through a simple and facile solution route without any surfactants or template. It was found that by simply controlling the reaction conditions, Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanowires, nanoflakes, and nanoparticles can be selectively prepared. Electrochemical measurements revealed that the as-prepared Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanowires, nanoflakes, and nanoparticles exhibited high discharge capacities and ideal shaped discharge curves. In particular, the Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanowires showed capacities much higher than those of Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanoflakes, nanoparticles, and commercial Ag 2 V 4 O 11 bulk. The correlation between the specific structural features of the nanowires and their superior electrode performance were also discussed. It is anticipated that the novel Cu 3 V 2 O 7 (OH) 2 • 2H 2 O nanowires are promising cathode candidates in the application of primary lithium ion batteries for implantable cardioverter defibrillators (ICDs).

Intertwined Cu3V2O7(OH)2·2H2O nanowires/carbon fibers composite: A new anode with high rate capability for sodium-ion batteries

“…2c. The growth mechanism for CuVOH-NWs is an Ostwald ripening and splitting process [32]. The unique intertwined network structure of CuVOH-NWs/CFs composite is further confirmed by TEM (Fig.…”

“…Firstly, carbon fibers were functionalized by HNO 3 and H 2 SO 4 at 120 C for 2 h and then washed with distilled water and ethanol. Secondly, one-pot hydrothermal method similar to one reported by Zhang et al [32] was used to synthesize Cu 3 V 2 O 7 (OH) 2 $2H 2 O/carbon fibers composite. Briefly, 0.2046 g CuCl 2 $2H 2 O was dissolved in 15 mL distilled water containing 0.062 g functionalized carbon fibers (33% of theoretical amount of Cu 3 V 2 O 7 (OH) 2 $2H 2 O fabricated from 0.2046 g CuCl 2 $2H 2 O by weight) and then was vigorously stirred.…”

Synthesis and electrochemical performance of cable-like copper vanadates/polypyrrole nanobelts as anode materials for lithium-ion batteries

“…4b), the initial discharge-charge capacities are 1142.1 and 632.2 mAh g -1 , and the irreversible capacity loss is about 44.6 %. The obvious capacity decay in the first two cycles may be caused by the complicated side-reactions, formation of the solid electrolyte interphase film (SEI) and irreversible structure variation [1,9]. Fig.…”

“…Much work has been carried out on the synthesis and electrochemical studies of various copper vanadates nanomaterials such as hierarchical Cu 4 V 2.15 O 9.38 nano/microstructures [5], Cu 2.33 V 4 O 11 [6], ε-Cu 0.95 V 2 O 5 hollow microspheres and nanoribbons [7,8], and Cu 3 V 2 O 7 (OH) 2 ·2H 2 O microflowers and nanowires [9,10].…”

Facile synthesis of ultralong NH4V3O8 nanobelts cathode material for lithium ion battery

“…As promising cathode materials for LIBs, vanadium oxide-based materials have attracted tremendous attention due to their low material cost, high discharge capacity and good cycling stability [2][3][4][5].…”