Co-production of hydrogen and carbon nanotubes on nickel foam via methane catalytic decomposition

Ping, Dan; Wang, Chaoxian; Dong, Xinfa; Dong, Yong

doi:10.1016/j.apsusc.2016.02.074

Cited by 42 publications

(19 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Briefly, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are the well-known techniques that are commonly used to observe the position of tip and sidewall, as well as the morphology of CNTs (as shown in Figure 5) [30,31,32]. Raman spectroscopy (RS) is one of the most powerful characterization techniques for CNTs [33,34,35].…”

Section: Fabrication Growth and Characterization Of Cntsmentioning

confidence: 99%

Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review

et al. 2017

Self Cite

View full text Add to dashboard Cite

Membrane separation technology is widely explored for various applications, such as water desalination and wastewater treatment, which can alleviate the global issue of fresh water scarcity. Specifically, carbon nanotubes (CNTs)-based composite membranes are increasingly of interest due to the combined merits of CNTs and membrane separation, offering enhanced membrane properties. This article first briefly discusses fabrication and growth mechanisms, characterization and functionalization techniques of CNTs, and then reviews the fabrication methods for CNTs-based composite membranes in detail. The applications of CNTs-based composite membranes in water treatment are comprehensively reviewed, including seawater or brine desalination, oil-water separation, removal of heavy metal ions and emerging pollutants as well as membrane separation coupled with assistant techniques. Furthermore, the future direction and perspective for CNTs-based composite membranes are also briefly outlined.

show abstract

Section: Fabrication Growth and Characterization Of Cntsmentioning

confidence: 99%

Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…The crosslinked honeycomb‐type morphology of Ni foam is illustrated in the inset of Figure b. Ni foam has been extensively used to grow various classes of materials ranging from carbon nanotubes, graphene grown by chemical vapor deposition and metal oxides, sulfides, selenides, grown by hydrothermal synthesis. Most of these studies have focused on three‐electrode measurements to estimate the specific capacitance of the deposited electrode materials.…”

mentioning

confidence: 99%

Hybrid Microsupercapacitors with Vertically Scaled 3D Current Collectors Fabricated using a Simple Cut‐and‐Transfer Strategy

Jiang

Kurra

Xia

et al. 2016

Advanced Energy Materials

View full text Add to dashboard Cite

MnO 2 and activated carbons employing binders and conductive additives, which are electrochemically inactive, often have poor electrochemical performance due to limited diffusion kinetics of electrolyte ions. In the case of thick block of electrode materials, electrolyte permeability is hindered and charge extraction becomes inefficient, which limits the final electrochemical performance of such devices. Therefore, compared to planar current collectors, ultrathick current collectors such as Ni foam or carbon fiber cloth are the best choice in terms of direct growth of electroactive materials by various methods on 3D collectors. This is because their intrinsic macroporous nature helps maximize active material loading, while providing easy access to the electrolyte ions, leading to faster reaction kinetics and hence improved electrochemical performance. For example, Ni foam has been extensively used in direct growth of metal oxides and sulfides by hydrothermal method [8,9] resulting in excellent specific capacity values. However, there are no reports on fabrication of coplanar electrochemical devices (e.g., microsupercapacitors) based on Ni foam patterned collectors. Since Ni foam is bulky (thickness of 500-1200 μm) with porous texture, it is not amenable to patterning by conventional photolithography.Here, we propose a new strategy for patterning macroscopic ultrathick 3D current collectors in the form of interdigitated electrodes by laser machining. A robust and simple approach was developed to pattern 3D current collectors as frameworks for maximum electroactive material loading with optimal electrochemical performance in a given footprint area. This platform can be used to evaluate various active materials in coplanar hybrid (asymmetric) configuration, which is typically more difficult to fabricate in comparison to symmetric configuration. As a proof of concept, a hybrid device is demonstrated, employing Faradaic NiCo 2 S 4 as a positive electrode material and electrochemical double-layer carbon nanofiber (CNF) as a negative electrode, both of which were directly grown on Ni foam interdigital electrodes by hydrothermal and chemical vapor deposition methods, respectively. We have demonstrated the fabrication of the hybrid coplanar device with remarkable areal capacity in a given footprint area with high operating voltage window in aqueous and gel electrolytes. Indeed, this hybrid prototype device exhibits superior energy density of 200 μWh cm −2 compared to state-of-the-art microsupercapacitors (1-40 μWh cm −2 ), with higher power density when compared to thin-film batteries and microbatteries at comparable energy density.Laser engraving is a direct patterning method, involving neither photoresists nor complicated multistep processing. Thanks to the energetic laser beam which has the ability to cut the metals locally, desired object shapes for many applications can On-chip energy storage devices, including thin film batteries and microsupercapacitors, are being developed as micropower (μ-power) units for portabl...

show abstract

“…Since the discovery of CNTs by Iijima (Iijima, 1991), many reports M a n u s c r i p t 4 have been presented on the production of CNTs using CVD technology, the first study being reported by Kong et al (Kong et al, 1998).Consequently, more attempt were made for the production of CNT via methane decomposition even until recently (Ping et al, 2016). Moreover, numerous reports exist emphasizing the production of hydrogen from methane (Weizhong et al, 2004).However, studies which investigate the parameters that would contribute to the production of CNTs with high yield while preserving their suitable morphology, shape, and diameter are lacking from the literature.…”

Section: Page 5 Of 36mentioning

confidence: 96%

Methane decomposition for carbon nanotube production: Optimization of the reaction parameters using response surface methodology

Allaedini

Aminayi

Tasirin

2016

Chemical Engineering Research and Design

View full text Add to dashboard Cite

Co-production of hydrogen and carbon nanotubes on nickel foam via methane catalytic decomposition

Cited by 42 publications

References 43 publications

Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review

Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review

Hybrid Microsupercapacitors with Vertically Scaled 3D Current Collectors Fabricated using a Simple Cut‐and‐Transfer Strategy

Methane decomposition for carbon nanotube production: Optimization of the reaction parameters using response surface methodology

Contact Info

Product

Resources

About