Ni(OH)<sub>2</sub> Tubes with Mesoscale Dimensions as Positive‐Electrode Materials of Alkaline Rechargeable Batteries

Cai, Fengshi; Zhang, Guoying; Chen, Jun; Gou, Xinglong; Liu, Huan; Dou, S. X.

doi:10.1002/ange.200460053

Cited by 208 publications

(21 citation statements)

References 21 publications

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“…Flake like Ni(OH) 2 spheres were observed at low and high magnification FESEM images ( Fig 2a and b). Ni(OH) 2 sphere formation could be explained based on coalescence mechanism (an oriented attachment mechanism) and Oswald-ripening mechanism as in the following reactions [19,27]:…”

Section: Raman Analysis Of Gfmentioning

confidence: 99%

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

et al. 2016

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Ni(OH) 2 /graphene foam (GF) electrode was synthesized for electrochemical application by a facile hydrothermal reflux technique. The results obtained from the scanning electron microscopy showed that the Ni(OH) 2 spheres successfully coated the entire surface area of the GF. Specific capacitance of 2420 F g -1 at a current density of 1 A g -1 was obtained for Ni(OH) 2 /GF composite electrode, as well as a capacitance retention of ~93% after 1000 charge-discharge cycles, demonstrating excellent cycle stability in 6.0 M KOH electrolyte. These results suggest that the composite could be a potential active material for high performance electrochemical applications.

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Section: Raman Analysis Of Gfmentioning

confidence: 99%

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

et al. 2016

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“…Among these endeavors, template‐based methods are the most popular. In spite of their wide applicability, template‐based methods are quite complicated and costly, usually involving the preparation of templates, shell deposition, and finally removal of the templates by harsh chemical procedures . Given the complicated and sometimes environment‐unfriendly nature of template‐based methods, it is highly desirable to develop facile, scalable template‐free approaches for the synthesis of hollow structured materials.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically Porous NaCoPO₄ -Co₃ O₄ Hollow Microspheres for Flexible Asymmetric Solid-State Supercapacitors

Wei

Cheng

Zhou

et al. 2015

Part. Part. Syst. Charact.

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1wileyonlinelibrary.com www.particle-journal.com www.MaterialsViews.com A template-free hydrothermal method is developed to prepare hierarchical hollow precursors. An inside-out Ostwald ripening mechanism is proposed to explain the formation of the hollow structure. After the calcination in the air, hierarchically meso/macroporous NaCoPO 4 -Co 3 O 4 hollow microspheres can easily be obtained. When being evaluated as electrode materials for a supercapacitor, the hierarchically porous NaCoPO 4 -Co 3 O 4 hollow microspheres electrode shows a specifi c capacitance of 268 F g −1 at 0.8 A g −1 and offers a good cycle life. More importantly, the obtained materials are successfully applied to fabricate fl exible solid-state asymmetric supercapacitors. The device exhibits a specifi c capacitance of 28.6 mF cm −2 at 0.1 mA cm −2 , a good cycling stability with only 5.5% loss of capacitance after 5000 cycles, and good mechanical fl exibility under different bending angles, which confi rms that the hierarchically porous NaCoPO 4 -Co 3 O 4 hollow microspheres are promising active materials for the fl exible supercapacitor.synthesis of micro/nano structured materials with well-defi ned structures is important to fi nd and make good use of novel properties in these materials. [2][3][4] Among various kinds of morphologies, hierarchically hollow micro/nano materials usually present unique properties; as a result, a lot of efforts have been devoted to preparing these materials. [5][6][7][8] Hierarchically hollow micro/nano materials are usually constructed by low-dimensional building blocks; the way these low-dimensional building blocks assemble into the hollow structure creates holes and cavities that are organized in an interesting order, enabling the materials to interact with liquids or gases not only at the surface, but also in the inner part of the materials. Thus, these materials fi nd wide applications in catalysis, sensors, and energy storage, etc. [9][10][11][12] Up to now, continuous efforts have been devoted to developing approaches for the preparation of hollow structured materials, and great progress has been achieved. Among these endeavors, template-based methods are the most popular. In spite of their wide applicability, template-based methods are quite complicated and costly, usually involving the preparation of templates, shell deposition, and fi nally removal of the templates by harsh chemical procedures. [13][14][15] Given the complicated and sometimes environment-unfriendly nature of template-based methods, it is highly desirable to develop facile, scalable template-free approaches for the synthesis of hollow structured materials. Recently, template-free methods based on the Kirkendall effect, Ostwald ripening process, have been developed for the fabrication of hollow structured materials. [16][17][18] Especially, the self-assembly of nanosized building blocks, followed by Ostwald ripening, is considered one of the most effi cient routes for the synthesis of hollow structures. Until now, despite the success in...

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“…The b-Ni(OH) 2 nanostructures of various morphologies have been fabricated, such as nanotubes and nanorods by template synthesis [9,10], nanoribbons and nanosheets by hydrothermal treating [11][12][13], and flower-like nanoarchitectures by one-step hydrothermal process with the aid of ethylenediamine [14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, microstructures and UV–vis absorption properties of β-Ni(OH)2 nanoplates and NiO nanostructures

et al. 2008

Journal of Crystal Growth

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Ni(OH)₂ Tubes with Mesoscale Dimensions as Positive‐Electrode Materials of Alkaline Rechargeable Batteries

Cited by 208 publications

References 21 publications

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

Hierarchically Porous NaCoPO₄ -Co₃ O₄ Hollow Microspheres for Flexible Asymmetric Solid-State Supercapacitors

Synthesis, microstructures and UV–vis absorption properties of β-Ni(OH)2 nanoplates and NiO nanostructures

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Ni(OH)2 Tubes with Mesoscale Dimensions as Positive‐Electrode Materials of Alkaline Rechargeable Batteries

Cited by 208 publications

References 21 publications

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

A facile hydrothermal reflux synthesis of Ni(OH)2/GF electrode for supercapacitor application

Hierarchically Porous NaCoPO4 -Co3 O4 Hollow Microspheres for Flexible Asymmetric Solid-State Supercapacitors

Synthesis, microstructures and UV–vis absorption properties of β-Ni(OH)2 nanoplates and NiO nanostructures

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Product

Resources

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Ni(OH)₂ Tubes with Mesoscale Dimensions as Positive‐Electrode Materials of Alkaline Rechargeable Batteries

Hierarchically Porous NaCoPO₄ -Co₃ O₄ Hollow Microspheres for Flexible Asymmetric Solid-State Supercapacitors