Rational Synthesis of Silver Vanadium Oxides/Polyaniline Triaxial Nanowires with Enhanced Electrochemical Property

Mai, Liqiang; Xu, Xu; Han, Chunhua; Luo, Yanzhu; Xu, Lin; Wu, Yimin A.; Zhao, Yunlong

doi:10.1021/nl202943b

Cited by 113 publications

(92 citation statements)

References 37 publications

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“…When the current rate was lowered back to 30 mA g -1 , the discharge capacity rebounded to about 150 mAh g -1 , showing good electrochemical reversibly. These results are better than previously published results [6][7][8].…”

Section: Resultscontrasting

confidence: 76%

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Synthesis and Characterization of Silver Vanadium Oxide as a Cathode for Lithium Ion Batteries

Nguyen¹,

Gu²

2016

Transactions on Electrical and Electronic Materials

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β-AgVO 3 nanorods have been successfully synthesized using a soft chemistry route followed by heat treatment. They were characterized by X-ray diffraction and field emission scanning electron microscopy, and their electrochemical properties were investigated using cyclic voltammetry, impedance spectra, and charge-discharge tests. The results showed that the smooth-surfaced nanorods are very uniform and well dispersed, with diameters of ~100-200 nm and lengths of the order of several macrometers. The nanorods deliver a maximum specific discharge capacity of 275 mAh g -1 at 30 mA g -1 . They also demonstrated good rate capability with a discharge capacity at the 100 th cycle of 51 mAh g -1 .

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Section: Resultscontrasting

confidence: 76%

“…L.Q. Mai et al [6] , with only 30% capacity retention after 20 cycles. S. Liang et al [7] reported simple synthesis using a soft chemical method without a template.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Silver Vanadium Oxide as a Cathode for Lithium Ion Batteries

Nguyen¹,

Gu²

2016

Transactions on Electrical and Electronic Materials

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“…The FTIR spectrum of phytic acid doped PAni indicates that it is the emeraldine salt form of PAni with two characteristic peaks located at 1,570 and 1; 480 cm −1 corresponding to the stretching vibration of the quinoid ring and benzenoid ring (16,17), respectively. The state of these products was emeraldine rather than solely leucoemeraldine or permigraniline (SI Appendix, Fig.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical nanostructured conducting polymer hydrogel with high electrochemical activity

Pan

Yu²,

Zhai

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

1,067

895

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Conducting polymer hydrogels represent a unique class of materials that synergizes the advantageous features of hydrogels and organic conductors and have been used in many applications such as bioelectronics and energy storage devices. They are often synthesized by polymerizing conductive polymer monomer within a nonconducting hydrogel matrix, resulting in deterioration of their electrical properties. Here, we report a scalable and versatile synthesis of multifunctional polyaniline (PAni) hydrogel with excellent electronic conductivity and electrochemical properties. With high surface area and three-dimensional porous nanostructures, the PAni hydrogels demonstrated potential as high-performance supercapacitor electrodes with high specific capacitance (∼480 F·g −1 ), unprecedented rate capability, and cycling stability (∼83% capacitance retention after 10,000 cycles). The PAni hydrogels can also function as the active component of glucose oxidase sensors with fast response time (∼0.3 s) and superior sensitivity (∼16.7 μA·mM −1 ). The scalable synthesis and excellent electrode performance of the PAni hydrogel make it an attractive candidate for bioelectronics and future-generation energy storage electrodes.conductive polymer hydrogel | supercapacitors | biosensors H ydrogels are polymeric networks that have a high level of hydration and three-dimensional (3D) microstructures bearing similarities to natural tissues (1, 2). Hydrogels based on conducting polymers [e.g., polythiophene, polyaniline (PAni), and polypyrrole] combine the unique properties of hydrogels with the electrical and optical properties of metals or semiconductors (3-6) thus offering an array of features such as intrinsic 3D microstructured conducting frameworks that promote the transport of charges, ions, and molecules (7). Conducting polymer hydrogels provide an excellent interface between the electronictransporting phase (electrode) and the ionic-transporting phase (electrolyte), between biological and synthetic systems, as well as between soft and hard materials (8). As a result, conducting polymer hydrogels have demonstrated great potential for a broad range of applications from energy storage devices such as biofuel cells and supercapacitors, to molecular and bioelectronics (9) and medical electrodes (8).To date, the synthetic routes toward conducting polymer hydrogels include synthesizing a conducting polymer monomer within a nonconducting hydrogel matrix (8, 9) using multivalent metal ions (Fe 3þ or Mg 2þ ) to crosslink poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) (10, 11) and using nonconducting poly(ethylene glycol) diglycidyl ether, or poly(styrenesulfonate) to crosslink PAni (12, 13); however, nonconducting hydrogel matrix and polymers result in the deterioration of the electrical properties, whereas excessive metal ions may reduce the biocompatibility of hydrogels. Moreover, there have yet been any reports in regard to conductive hydrogels that can be facilely micropatterned, which is important for fabricating hy...

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“…43 Figure 1b It is obvious that sample 450 has a larger curve area and a higher redox peak current than those of samples 400 and 500, suggesting that sample 450 has the highest capacity and the fastest kinetics for Li ion insertion/extraction. 41,44 Sample 450 is used as an example to explain the electrochemical process. All of these peaks originate from the phase transitions between Li 1 þ x V 3 O 8 components with different x values (0oxo3).…”

Section: Characterization Of LIV 3 O 8 Nanowiresmentioning

confidence: 99%

Topotactically synthesized ultralong LiV3O8 nanowire cathode materials for high-rate and long-life rechargeable lithium batteries

Luo

Mai

et al. 2012

NPG Asia Mater

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High-power applications at fast charge and discharge rates are still significant challenges in the development of rechargeable lithium (Li) batteries. Here, we demonstrate that ultralong LiV 3 O 8 nanowire cathode materials synthesized by topotactic Li intercalation are capable of excellent high-rate performance with minimal capacity loss. A specific discharge capacity of 176 mAh g À1 can be obtained at the current density of 1500 mA g À1 , and the capacity is able to stabilize at 160 mAh g À1 after 400 cycles, corresponding to 0.025% capacity fading per cycle. For current density up to 2000 mA g À1 , the initial and the six-hundredth cycle capacities can reach 137 and 120 mAh g À1 , respectively, corresponding to a capacity fading of only 0.022% per cycle. The ability to provide this level of performance is attributed to a low-charge-transfer resistance, good structural stability, large surface area and suitable degree of crystallinity, and it indicates that LiV 3 O 8 nanowires are promising cathode materials for use in high-rate and long-life rechargeable Li batteries.

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Rational Synthesis of Silver Vanadium Oxides/Polyaniline Triaxial Nanowires with Enhanced Electrochemical Property

Cited by 113 publications

References 37 publications

Synthesis and Characterization of Silver Vanadium Oxide as a Cathode for Lithium Ion Batteries

Synthesis and Characterization of Silver Vanadium Oxide as a Cathode for Lithium Ion Batteries

Hierarchical nanostructured conducting polymer hydrogel with high electrochemical activity

Topotactically synthesized ultralong LiV3O8 nanowire cathode materials for high-rate and long-life rechargeable lithium batteries

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