X-Ray Diffraction and Raman Scattering Studies of Electrochemically Cycled CuV[sub 2]O[sub 6]

Ryu, Chang Wan; Chen, Gang; Kim, Kwang Bum

doi:10.1149/1.2336984

Cited by 24 publications

(26 citation statements)

References 11 publications

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“…Besides this, a small shoulder band is observed at 956 cm −1 which is close to the V-O 1 stretching. Such a shoulder band is not attributed to orthorhombic V 2 O 5 but has been observed for oxygen deficient CuV 2 O 6−ı [19], and lithiated Li x V 2 O 5 and Li x CuV 2 O 6 [20,21]. According to these reports, this shoulder band can be assigned to V 4+ -O 1 stretching.…”

Section: Raman Scatteringmentioning

confidence: 81%

Effects of Cr doping on the structural and electrochemical properties of V2O5

Zhan¹,

Chen²,

Liu³

et al. 2009

Journal of Alloys and Compounds

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Section: Raman Scatteringmentioning

confidence: 81%

Effects of Cr doping on the structural and electrochemical properties of V2O5

Zhan¹,

Chen²,

Liu³

et al. 2009

Journal of Alloys and Compounds

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“…The electrochemical capacity of the Cu 2.33 V 4 O 11 cathode is almost double that of existing LiCoO 2 electrodes (250-270 mA h g À1 compared with 140-150 mA h g À1 ) owing to the insertion/ extraction of ve or more Li + per formula unit. [10][11][12] In recent years, conducting polymers coating have been investigated as an effective way to improve the electrode performance, because it improves the surface electronic conductivity and the electric contact between particles and conducting agents. 5 However, the main challenge for employing copper vanadates as active materials for rechargeable lithium-ion batteries is the poor electrical conductivity and large volume change during discharge-charge process.…”

Section: Introductionmentioning

confidence: 99%

Copper vanadates/polyaniline composites as anode materials for lithium-ion batteries

Zhang

Peng

et al. 2015

RSC Adv.

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In this study, a simple hydrothermal process has been carried out for the synthesis of Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O nanorods and Cu 5 V 2 O 10 nanoparticles. The copper vanadates/polyaniline (CVO/PANI) core-shell composites have also been synthesized via a simple dip-and-dry method on the surface of Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O nanorods and Cu 5 V 2 O 10 nanoparticles. When tested as anode materials in lithiumion batteries, the CVO/PANI composites exhibit improved electrochemical properties of high discharge capacity, excellent cycling reversibility and rate capability, compared with the pure CVO materials. The results suggest that the conductive PANI nanolayer coating helps to preserve high capacity, maintain high electrochemical stability, and reduce charge transfer resistance during cycling performance. Singapore † Electronic supplementary information (ESI) available: Infrared diffuse reectance spectra of Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O and Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O/PANI nanorods, thermal gravimetric analysis (TGA) curves of the Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O and Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O/PANI composite obtained from 40 to 700 C at a heating rate of 20 C min À1 , TGA curves of the Cu 5 V 2 O 10 and Cu 5 V 2 O 10 /PANI composite obtained from 40 to 700 C at a heating rate of 20 C min À1 , the discharge-charge proles of pure Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O at a current density of 150 mA g À1 between 0.01 V and 3.3 V, The discharge-charge proles of pure Cu 5 V 2 O 10 at a current density of 150 mA g À1 between 0.01 V and 3.3 V, FESEM and TEM images of the electrode mixture removed from the Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O/PANI electrode aer 50 discharge-charge cycles. See

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“…Among the copper vanadates, CuV 2 O 6 has been investigated by many researchers as cathode materials for LIBs owing to their layered nature, however it delivers an unstable cycling performance with low capacity when it used as cathode material for LIBs [11][12][13][14]. Kin et al reported CuV 2 O 6 could deliver an initial discharge capacity of 379 mAh g −1 in the potential region of 1.5-4.0 V, which decreased to 160 mAh g −1 after 30 cycles [11].…”

Section: Introductionmentioning

confidence: 99%

“…Kin et al reported CuV 2 O 6 could deliver an initial discharge capacity of 379 mAh g −1 in the potential region of 1.5-4.0 V, which decreased to 160 mAh g −1 after 30 cycles [11]. Cao et al reported the initial capacity of CuV 2 O 6 obtained by citrate sol-gel route was 403 mAh g −1 and about 150 mAh g −1 was maintained after 30 cycles in the potential region of 1.5-3.6 V [12].…”

Section: Introductionmentioning

confidence: 99%