Highly conductive three-dimensional MnO<sub>2</sub>–carbon nanotube–graphene–Ni hybrid foam as a binder-free supercapacitor electrode

Zhu, Guoyin; He, Zhi Min; Chen, Jun; Zhao, Jianwei; Feng, Xiang; Ma, Yanwen; Fan, Quli; Wang, Lianhui; Huang, Wei

doi:10.1039/c3nr04495e

Cited by 325 publications

(180 citation statements)

References 38 publications

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“…Only a broad diffraction peak at around 12°can be seen in the X-ray diffraction (XRD) pattern of NiCo-glycerate ( Supplementary Fig. 1), which is a characteristic of metal alkoxides 42 . The NiCo-glycerate spheres are highly uniform with a diameter of around 550 nm ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

et al. 2015

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While the synthesis of hollow structures of transition metal oxides is well established, it is extremely challenging to fabricate complex hollow structures for mixed transition metal sulfides. Here we report an anion exchange method to synthesize a complex ternary metal sulfides hollow structure, namely nickel cobalt sulfide ball-in-ball hollow spheres. Uniform nickel cobalt glycerate solid spheres are first synthesized as the precursor and subsequently chemically transformed into nickel cobalt sulfide ball-in-ball hollow spheres. When used as electrode materials for electrochemical capacitors, these nickel cobalt sulfide hollow spheres deliver a specific capacitance of 1,036 F g À 1 at a current density of 1.0 A g À 1 . An asymmetric supercapacitor based on these ball-in-ball structures shows long-term cycling performance with a high energy density of 42.3 Wh kg À 1 at a power density of 476 W kg À 1 , suggesting their potential application in high-performance electrochemical capacitors.

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Section: Resultsmentioning

confidence: 99%

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

et al. 2015

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“…Zhu et al prepared 3D MnO 2 -CNT-graphene-nickel hybrid foam. Such porous and highly conductive electrode delivers a specific capacitance of~251 F g −1 (Zhu et al, 2014). Heteroatom doping and integration of CNTs can be employed to enhance the capacitive behavior.…”

Section: Supercapacitorsmentioning

confidence: 99%

“…In this composite, the intercalating CNTs not only prevent stacking of graphene sheets but also facilitate electron and ion transport. Two-step CVD processes have been devised to grow graphene foam covered with CNT matrix (Figure 4) (Zhu et al, 2014). CNT nano-meshes on top of monolithic graphene skeleton further enhance surface area, conductivity, and charge-transfer conductance.…”

Section: D Cnt-graphene Hybridsmentioning

confidence: 99%

Three-Dimensional Porous Architectures of Carbon Nanotubes and Graphene Sheets for Energy Applications

2014

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Owing to their extraordinary physicochemical, electrical, and mechanical properties, carbon nanotubes (CNTs) and graphene materials have been widely used to improve energy storage and conversion. In this article, we briefly review the latest development on fabrication of 3D porous structures of CNTs or graphene sheets or their hybrids, and their applications in various energy devices including supercapacitors, (bio-) fuel cells, and lithium ion batteries.

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“…Thus, considerable efforts have been made to enhance the SC performance by creating composites of TMOs and carbon materials, such as TMOs/graphene and TMOs/ carbon nanofibers (CFs) [154][155][156][157][158][159][160][161][162][163][164][165][166][167]. The synthesized multi-component composites can maximize the benefits from all components [154][155][156][157][158][159][160][161][162][163][164][165][166][167][168][169].…”

Section: Composites Of Carbon Materials and Tmosmentioning

confidence: 99%

Hierarchically nanostructured transition metal oxides for supercapacitors

Zheng

Xiao

et al. 2017

Sci. China Mater.

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Highly conductive three-dimensional MnO₂–carbon nanotube–graphene–Ni hybrid foam as a binder-free supercapacitor electrode

Cited by 325 publications

References 38 publications

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

Three-Dimensional Porous Architectures of Carbon Nanotubes and Graphene Sheets for Energy Applications

Hierarchically nanostructured transition metal oxides for supercapacitors

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Highly conductive three-dimensional MnO2–carbon nanotube–graphene–Ni hybrid foam as a binder-free supercapacitor electrode

Cited by 325 publications

References 38 publications

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties

Three-Dimensional Porous Architectures of Carbon Nanotubes and Graphene Sheets for Energy Applications

Hierarchically nanostructured transition metal oxides for supercapacitors

Contact Info

Product

Resources

About

Highly conductive three-dimensional MnO₂–carbon nanotube–graphene–Ni hybrid foam as a binder-free supercapacitor electrode