Multi-dimensional CuO nanorods supported CoMoO4 nanosheets heterostructure as binder free and high stable electrode for supercapacitor

Liu, Feng; Yang, Yanqin; Li, Songzhan; Chen, Tian; Long, Hao; Wang, Haoning; Liu, Min

doi:10.1007/s10854-018-9092-2

Cited by 16 publications

(6 citation statements)

References 40 publications

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“…The peak of around to 300 cm −1 corresponds to Sr–O–Mo bond 44 . The band located at 802 cm −1 is associated with asymmetric stretching modes of O–Mo–O bond while the band at 904 cm −1 corresponds to the symmetric stretching mode of Mo–O bond 45 . On analyzing the Raman bands of modified material by GO, two distinct bands, namely, D and G bands, were obtained at 1347 cm −1 and 1580 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Szkoda

Ilnicka

Skorupska

et al. 2022

Sci Rep

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Herein, we demonstrate that modification of TiO2 nanotubes with graphene–strontium and cobalt molybdate perovskite can turn them into active electrocatalysts for hydrogen evolution reaction (HER). For this purpose, a simple method of hydrothermal synthesis of perovskites was developed directly on the TiO2 nanotubes substrate. Moreover, the obtained hybrids were also decorated with graphene oxide (GO) during one-step hydrothermal synthesis. The obtained materials were characterized by scanning electron microscopy with energy dispersive X-ray analysis, Raman spectroscopy, and X-ray diffraction analysis. Catalytic properties were verified by electrochemical methods (linear voltammetry, chronopotentiometry). The obtained hybrids were characterized by much better catalytic properties towards hydrogen evolution reaction compared to TiO2 and slightly worse than platinum. The optimized hybrid catalyst (decorated by GO) can drive a cathodic current density of 10 mA cm−2 at an overpotential of 121 mV for HER with a small Tafel slope of 90 mV dec−1 in 0.2 M H2SO4.

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Section: Resultsmentioning

confidence: 99%

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Szkoda

Ilnicka

Skorupska

et al. 2022

Sci Rep

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show abstract

“…An efficient strategy is preparing the porous nanomaterials with high-surface area, which can facilitate electron/ion transport and enhance molecular adsorption and electrochemical reactions occurring at solid-liquid interfaces, leading to high-electrical energy storage and electrochemical process efficiency. 15 Recently, some CoMoO 4 materials with unique structures have been prepared to improve the supercapacitor performance. For example, CoMoO 4 nanosheets prepared by hydrothermal methods exhibit 21 mAh/g at 1 mA/cm 216 ; CoMoO 4 nanowires obtained by combining a "directional attachment" technique possess the excellent electrochemical performance of 0.7 F/cm 2 at 2 mA/cm 217 ; CoMoO 4 nanorods synthesized by microwave methods own 53 mAh/g at 1 A/g 18 ; globular CoMoO 4 possess a specific capacitance of 384 F/g at 1 A/g.…”

Section: Discussionmentioning

confidence: 99%

“…Many attempts have been made to improve the supercapacitor performance of CoMoO 4 . An efficient strategy is preparing the porous nanomaterials with high‐surface area, which can facilitate electron/ion transport and enhance molecular adsorption and electrochemical reactions occurring at solid‐liquid interfaces, leading to high‐electrical energy storage and electrochemical process efficiency . Recently, some CoMoO 4 materials with unique structures have been prepared to improve the supercapacitor performance.…”

Section: Introductionmentioning

confidence: 99%

Boosting the energy storage performance of cobalt molybdate microspheres constructed from urotropin‐induced ultrathin nanosheets

Wei

Zhang

et al. 2019

Int J Energy Res

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Summary The CoMoO4 microspheres constructed from ultrathin nanosheets were synthesized by means of a simple chemical precipitation using urotropin (C6H12N4) as a soft template, which were used as the electrode materials for supercapacitors. It was found that the CoMoO4 sample with 3 mmol of added urotropin (vs 1 mmol CoCl2) exhibits the uppermost specific capacity value of 89 mAh/g at a current density of 0.25 A/g due to its unique mesoporous structure and large specific surface area. In addition, a hybrid supercapacitor was established by the CoMoO4 microspheres (positive electrode) and activated carbon (AC, negative electrode). The obtained CoMoO4//AC hybrid supercapacitor possesses a specific energy value of 34 Wh/kg at 375 W/kg. Most importantly, this device owns excellent cycle stability with no capacity decay observed after 10 000 cycles. These good electrochemical properties of CoMoO4 microspheres are promising in the practical use fields.

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“…The peak of around to 300 cm − 1 corresponds to Sr-O-Mo bond 36 . The band located at 802 cm − 1 is associated with asymmetric stretching modes of O-Mo-O bond while the band at 904 cm − 1 corresponds to the symmetric stretching mode of Mo-O bond 37 . On analyzing the Raman bands of modi ed material by GO, two distinct bands, namely, D and G bands, were obtained at 1347 cm − 1 and 1580 cm − 1 .…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

Modification of TiO 2 nanotubes by graphene - strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Szkoda

Ilnicka

Skorupska

et al. 2022

Preprint

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Herein, we demonstrate that modification of TiO2 nanotubes with graphene-strontium and cobalt molybdate perovskite can turn them into active electrocatalysts for hydrogen evolution reaction (HER). For this purpose, a simple method of hydrothermal synthesis of perovskites was developed directly on the TiO2 nanotubes substrate. Moreover, the obtained hybrids were also decorated with graphene oxide (GO) during one-step hydrothermal synthesis. The obtained materials were characterized by scanning electron microscopy with energy dispersive X-ray analysis, Raman spectroscopy, and X-ray diffraction analysis. Catalytic properties were verified by electrochemical methods (linear voltammetry, chronopotentiometry). The obtained hybrids were characterized by much better catalytic properties towards hydrogen evolution reaction compared to TiO2 and slightly worse than platinum. The optimized hybrid catalyst (decorated by GO) can drive a cathodic current density of 10 mA cm−2 at an overpotential of 121 mV for HER with a small Tafel slope of 90 mV dec−1 in 0.2 M H2SO4.

show abstract

Multi-dimensional CuO nanorods supported CoMoO4 nanosheets heterostructure as binder free and high stable electrode for supercapacitor

Cited by 16 publications

References 40 publications

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Boosting the energy storage performance of cobalt molybdate microspheres constructed from urotropin‐induced ultrathin nanosheets

Modification of TiO 2 nanotubes by graphene - strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

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