One-pot synthesis of heterogeneous Co3O4-nanocube/Co(OH)2-nanosheet hybrids for high-performance flexible asymmetric all-solid-state supercapacitors

Pang, Huan; Li, Xinran; Zhao, Qunxing; Han, Xue; Lai, Wen‐Yong; Hu, Zheng

doi:10.1016/j.nanoen.2017.02.044

Cited by 305 publications

(101 citation statements)

References 29 publications

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“…In particular, a 3D‐structured current collector with a thin active material layer would be an ideal solution for the poor rate capability of low‐conductive Ni(OH) 2 . For example, commercially available Ni foams comprising hundred‐micrometer‐scale structures have been used as good 3D current collectors, since they provide improved electrochemical properties by reducing charge diffusion resistance and facilitating ion transport . Ni foam is a macroscopic 3D structure which allows electrolytes to easily access a large number of active sites.…”

Section: Introductionsupporting

confidence: 74%

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

Kim

et al. 2017

Chemistry An Asian Journal

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A straightforward way to attain the theoretical capacitance and high rate capability of nickel hydroxide supercapacitors, by utilizing a mesoporous hollow dendritic three-dimensional-nickel (3D-Ni) current collector is proposed. A facile electrodeposition method employing a hydrogen bubble template was chosen for rapid fabrication of the dendritic 3D-nickel structure. After nickel hydroxide was deposited on the hollow 3D-nickel current collector, it exhibited a highest capacitance of 3637 F g at a current density of 1 A g , and retained 97 % of capacitance at a high current density of 100 A g with a cycle stability of over 80 % after 10 000 cycles. The enhanced performance could be attributed to the large surface area and high conductivity of the moss-like dendritic 3D-Ni current collector, which allowed direct contact between the active materials and the current collector, and reduced diffusion resistance between the surface of the active materials and the electrolyte. These results not only confirmed a facile fabrication method for high-performance 3D metal nanostructures, but also offer a promising solution for state-of-the-art energy storage systems.

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Section: Introductionsupporting

confidence: 74%

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

Kim

et al. 2017

Chemistry An Asian Journal

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“…Recently, β‐Co(OH) 2 has been reported as a promising pseudocapacitor electrode material with various morphological features in the three‐electrode assembly . Layered β‐Co(OH) 2 has a high theoretical specific capacitance, but the lower redox potential hampers its potential use.…”

Section: Introductionmentioning

confidence: 99%

β‐Co(OH)₂ Nanosheets: A Superior Pseudocapacitive Electrode for High‐Energy Supercapacitors

Ulaganathan

Maharjan

Yan

et al. 2017

Chemistry An Asian Journal

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In this work, β-Co(OH) nanosheets are explored as efficient pseudocapacitive materials for the fabrication of 1.6 V class high-energy supercapacitors in asymmetric fashion. The as-synthesized β-Co(OH) nanosheets displayed an excellent electrochemical performance owing to their unique structure, morphology, and reversible reaction kinetics (fast faradic reaction) in both the three-electrode and asymmetric configuration (with activated carbon, AC). For example, in the three-electrode set-up, β-Co(OH) exhibits a high specific capacitance of ∼675 F g at a scan rate of 1 mV s . In the asymmetric supercapacitor, the β-Co(OH) ∥AC cell delivers a maximum energy density of 37.3 Wh kg at a power density of 800 W kg . Even at harsh conditions (8 kW kg ), an energy density of 15.64 Wh kg is registered for the β-Co(OH) ∥AC assembly. Such an impressive performance of β-Co(OH) nanosheets in the asymmetric configuration reveals the emergence of pseudocapacitive electrodes towards the fabrication of high-energy electrochemical charge storage systems.

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“…Rechargeable lithium‐ion batteries (LIBs) and sodium‐ion batteries (SIBs) are regarded as the most promising electrochemical energy storage systems because of the high energy densities, long cycle life, and environmental friendliness . The charge storage performance of alkali‐ion batteries depends on the electrode materials and so development of high‐performance electrode materials is imperative to the success of advanced LIBs and SIBs …”

Section: Introductionmentioning

confidence: 99%

In situ Synthesis of V₂O₃‐Intercalated N‐doped Graphene Nanobelts from VO_x‐Amine Hybrid as High‐Performance Anode Material for Alkali‐Ion Batteries

Zhang

Liao

et al. 2018

ChemElectroChem

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V2O3 is a promising anode material for lithium‐ and sodium‐ion batteries due to its high theoretical capacity and natural abundance. However, the low conductivity, sluggish ion reaction kinetics, and large volume change limit the rate and cycling stability in batteries. In this work, the V2O3‐nanoparticles‐intercalated N‐doped graphene (V2O3/NG) hybrid is prepared by one‐step controlled pyrolysis of inorganic‐organic hybrid VOx/3‐phenylpropylamine nanobelts under Ar. The intercalated 3‐phenylpropylamine molecules are carbonized in situ into the NG layers and the sandwiched VOx layers are converted into 10–20 nm V2O3 nanoparticles. The V2O3/NG nanobelts possess well‐defined 0D‐in‐1D morphology and excellent electrochemical performance such as high reversible capacities of 435 mAh g−1 at 100 mA g−1 over 250 cycles for Li‐ion storage and 154 mAh g−1 at 500 mA g−1 over 500 cycles for Na‐ion storage. The well‐defined 0D‐in‐1D hybrid V2O3/NG structure with small V2O3 nanoparticles, interconnected nanochannels, and conductive NG layers offer abundant electrochemical active sites leading to fast Li+ and electron transport and excellent alkali‐ion storage.

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One-pot synthesis of heterogeneous Co3O4-nanocube/Co(OH)2-nanosheet hybrids for high-performance flexible asymmetric all-solid-state supercapacitors

Cited by 305 publications

References 29 publications

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

β‐Co(OH)₂ Nanosheets: A Superior Pseudocapacitive Electrode for High‐Energy Supercapacitors

In situ Synthesis of V₂O₃‐Intercalated N‐doped Graphene Nanobelts from VO_x‐Amine Hybrid as High‐Performance Anode Material for Alkali‐Ion Batteries

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One-pot synthesis of heterogeneous Co3O4-nanocube/Co(OH)2-nanosheet hybrids for high-performance flexible asymmetric all-solid-state supercapacitors

Cited by 305 publications

References 29 publications

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

Nickel Hydroxide Supercapacitor with a Theoretical Capacitance and High Rate Capability Based on Hollow Dendritic 3D‐Nickel Current Collectors

β‐Co(OH)2 Nanosheets: A Superior Pseudocapacitive Electrode for High‐Energy Supercapacitors

In situ Synthesis of V2O3‐Intercalated N‐doped Graphene Nanobelts from VOx‐Amine Hybrid as High‐Performance Anode Material for Alkali‐Ion Batteries

Contact Info

Product

Resources

About

β‐Co(OH)₂ Nanosheets: A Superior Pseudocapacitive Electrode for High‐Energy Supercapacitors

In situ Synthesis of V₂O₃‐Intercalated N‐doped Graphene Nanobelts from VO_x‐Amine Hybrid as High‐Performance Anode Material for Alkali‐Ion Batteries