Three-dimensional aerogel based on in-situ growth of 1T-MoS2 on functionalized hierarchical porous carbon/reduced graphene oxide for energy storage

Imtiaz, Muhammad; Chen, Zhuo; Zhu, Chengling; Naz, Raheela; Imran, Zahid; Pan, Hui; Wang, Dawei; Abbas, Waseem; Nigar, Salma; Li, Yao; Zhu, Shenmin

doi:10.1016/j.apsusc.2019.144811

Cited by 22 publications

(11 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[48] In Figure 5b, the peaks at 162.3 and 163.5 eV correspond to S 2p 3/2 and S 2p 1/2 orbitals of S 2− , respectively, which are associated with the 2H-MoS 2 , consistent with the XRD data. [49] The C 1s peaks at 284.6, 286.2, and 289.5 eV can be assigned to CC, CO/NC, and CO, respectively (Figure 5c). In particular, the weak intensity of CO and CO bonds indicates that MoS 2 -NPC contains a small amount of oxygen-containing functional groups.…”

Section: Resultsmentioning

confidence: 99%

“…MoS 2 -NPC gives a smaller Tafel slope of 41 mV dec −1 , much smaller than that of NPC (159 mV dec −1 ) and MoS 2 (93 mV dec −1 ), suggesting MoS 2 -NPC hybrid undergoes the Volmer Heyrovsky route and electrochemical desorption is the dominant rate-limiting step. [49] Because electrochemical surface area (ECSA) is proportional to the C dl value of the electrocatalyst, [12] the C dl was investigated to estimate ECSA. In Figure S3 in the Supporting Information and Figure 6c,d continuous cyclic voltammograms (CV) tests were also performed to evaluate the durability of MoS 2 -NPC.…”

Section: Resultsmentioning

confidence: 99%

“…Figure6bshows the Tafel plots constructed from the experimental linear sweep voltammetry (LSV) data. MoS 2 -NPC gives a smaller Tafel slope of 41 mV dec −1 , much smaller than that of NPC (159 mV dec −1 ) and MoS 2 (93 mV dec −1 ), suggesting MoS 2 -NPC hybrid undergoes the Volmer Heyrovsky route and electrochemical desorption is the dominant rate-limiting step [49]. Because electrochemical surface area (ECSA) is proportional to the C dl value of the electrocatalyst,[12] the C dl was investigated to estimate ECSA.…”

mentioning

confidence: 93%

See 2 more Smart Citations

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

Cao

Liu

Fan

et al. 2021

Advanced Sustainable Systems

View full text Add to dashboard Cite

Special attention is devoted to develop lowcost and highly efficient energy conversion and storage technologies to meet the needs of society development. [3][4][5][6] LIBs and electrocatalytic water splitting for hydrogen evolution reaction (HER) have been considered to be two promising alternatives because of their environmental friendliness, high power density, and availability. [7][8][9] Nevertheless, the scarcity and high price of the HER electrocatalysts (e.g., platinum and other noble metals materials), as well as the low theoretical specific capacity of LIBs, hinder their further development. [10][11][12] Consequently, it is of great significance to explore advanced LIBs electrode materials and water splitting electrocatalysts with low cost, excellent stability, and high activity. [6] As a typical transition metal dichalcogenides (TMDs), MoS 2 has earned considerable attention either as an anode material in battery applications or as HER electrocatalyst owing to its layered structure analogous to graphite, high theoretical capacity (670 mAh g −1 ) and unique sandwich structure with large interlayer spacing (6.2 Å) to facilitate intercalation of alkaline ions. [13,14] Nevertheless, some undesirable disadvantages, such as low conductivity, volume expansion, restacking, and self-aggregation, hinder the direct practical application in electrochemical energy storage and conversion systems. [15,16] To alleviate these problems, one of the valid strategies is incorporating various carbon matrixes including graphene, [17] carbon nanotubes, [18] carbon polyhedra, [19] porous carbons, [20] or carbon sheets, [21] etc. Previous reports have demonstrated that 2D MoS 2 combined with carbon materials could not only increase the conductivity of MoS 2 but also help to stabilize the electrode structure by accommodating the volume variation during cycling, thus enhancing the electrochemical performance. [22][23][24][25] Among the various carbon precursors, natural bio-masses are the most popular candidates because of their low cost, availability, and biodegradable nature. [26] Agar is a biopolymer material derived from marine red algae. It is a mixture of agarose and agaropectin and has been widely used in food, cosmetics, pharmaceutical, and biological media. In recent years, it was also employed to fabricate carbon material for sorbent or supercapacitors. For instance, Zhang and Hu synthesized N-doped hierarchical porous carbon materials for supercapacitor electrodes by MoS 2 has been explored as a potential material for hydrogen evolution reaction (HER) and lithium-ion batteries (LIBs). However, the limited number of active sites and poor conductivity restrain its applications. Herein, a facile method is reported to construct MoS 2 nanosheets (MoS 2 NSs) grown on agar-derived 3D nitrogen-doped porous carbon (MoS 2 -NPC). The as-prepared MoS 2 -NPC composite exhibits good stability and HER electrocatalytic properties with a low overpotential of 209 mV at 10 mA cm −2 and a small Tafel slope of 41 mV dec −1 . Furthermore, as ...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 93%

See 1 more Smart Citation

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

Cao

Liu

Fan

et al. 2021

Advanced Sustainable Systems

View full text Add to dashboard Cite

show abstract

“…In a previous study, the development of Co-doped MoS 2 nanosheets composed of a dominant metastable 1T phase has been achieved with promising catalytic properties . In the present study, we have investigated the densification of these 1T-MoS 2 nanosheets by reactive spark plasma sintering, which constitutes a nanostructure-engineering strategy for the development of the TMDC in contrast to the classical film approach usually employed. − …”

Section: Introductionmentioning

confidence: 99%

Induced 2H-Phase Formation and Low Thermal Conductivity by Reactive Spark Plasma Sintering of 1T-Phase Pristine and Co-Doped MoS₂ Nanosheets

Bourgès

Rajamathi²,

Nethravathi³

et al. 2021

ACS Omega

View full text Add to dashboard Cite

Pristine and Co-doped MoS2 nanosheets, containing a dominant 1T phase, have been densified by spark plasma sintering (SPS) to produce a nanostructured arrangement. The structural analysis by X-ray powder diffraction revealed that the reactive sintering process transforms the 1T-MoS2 nanosheets into their stable 2H form despite a significantly reduced sintering temperature and time testifying to the fast kinetics of phase change. Together with the phase conversion, the SPS process promoted a strong texturing of the nanosheets, which drives additional scattering processes and alters the electronic and thermal transport properties. In the pristine sample, it produced one of the lowest thermal conductivities ever reported on MoS2 with a minimal value of 0.66 W/m·K at room temperature. The effect of Co substitution in the final sintered samples is not significant, compared to the pristine MoS2 sample, except for a non-negligible improvement of the electrical conductivity by a factor of 100 in the high-Co content (6% by mass) sample.

show abstract

“…More recently, various free‐standing electrodes using various carbon nanomaterials are also introduced to enhance the performance of MoS 2 anode. Representatively, the graphene nanosheets and its derivatives‐based 3D nanostructures, such as sandwiched 1D/2D sheets, aerogel, and foam‐shape, were exhibited superior lithium storage performance 15‐20 . The well‐organized carbon nanostructure with MoS 2 serves highly efficient charge transfer pathway and stress relieving ability.…”

Section: Introductionmentioning

confidence: 99%

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

et al. 2021

View full text Add to dashboard Cite

Summary In this study, a free‐standing MoS2 nanofilm on a porous carbon cloth (MoS2@PCC) was prepared for application as an anode in Li‐ion batteries. Uniform, non‐aggregated MoS2@PCC electrodes were synthesized via facile electric‐wire‐explosion, dip‐coating, and thermal sulfidation processes. The phase and morphologies were controlled using a variety of explosion media that had different carbon contents. The dip‐coating of PCC into a colloidal solution prepared by underwater explosion of Mo metallic wire and the thermal sulfidation process provided higher uniformity of MoS2 nanoparticles with no particle aggregation. This facilitated the charge transfer and accommodation of volume expansion of Li‐active MoS2 upon cycling. Consequently, the free‐standing MoS2@PCC electrodes exhibited enhanced lithium reactivity, high rate capability, and cycle durability, compared with the conventional MoS2 nanoparticle electrode.

show abstract

Three-dimensional aerogel based on in-situ growth of 1T-MoS2 on functionalized hierarchical porous carbon/reduced graphene oxide for energy storage

Cited by 22 publications

References 65 publications

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

Induced 2H-Phase Formation and Low Thermal Conductivity by Reactive Spark Plasma Sintering of 1T-Phase Pristine and Co-Doped MoS₂ Nanosheets

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

Contact Info

Product

Resources

About

Three-dimensional aerogel based on in-situ growth of 1T-MoS2 on functionalized hierarchical porous carbon/reduced graphene oxide for energy storage

Cited by 22 publications

References 65 publications

MoS2 Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

MoS2 Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

Induced 2H-Phase Formation and Low Thermal Conductivity by Reactive Spark Plasma Sintering of 1T-Phase Pristine and Co-Doped MoS2 Nanosheets

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

Contact Info

Product

Resources

About

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

MoS₂ Anchored on Agar‐Derived 3D Nitrogen‐Doped Porous Carbon for Electrocatalytic Hydrogen Evolution Reaction and Lithium‐Ion Batteries

Induced 2H-Phase Formation and Low Thermal Conductivity by Reactive Spark Plasma Sintering of 1T-Phase Pristine and Co-Doped MoS₂ Nanosheets