Synergistically modified WS<sub>2</sub>@PANI binary nanocomposite-based all-solid-state symmetric supercapacitor with high energy density

Iqbal, Muzahir; Saykar, Nilesh G; Alegaonkar, Prashant S.; Mahapatra, S. K.

doi:10.1039/d2nj00165a

Cited by 24 publications

(19 citation statements)

References 66 publications

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“…Additionally, the −SO 3 − groups in LS can effectively promote the Faradaic redox reactions by enriching the H + in the surrounding of PANI/G-LS/WS 2 -LS during charging and discharging processes. 26,36,37 Since the highest specific capacitance was obtained by using the ternary composite PANI/G-LS/WS 2 -LS (Figure 5b, at 1 A/g), its electrochemical performance was further systematically investigated under various conditions. Figure 6a shows the CV curves of the PANI/G-LS/WS 2 -LS electrode at scan rates from 10 to 100 mV/s.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Therefore, the G-LS/WS 2 -LS heterostructures act as a template to effectively regulate the morphology of the in situ-synthesized PANI. While the graphene nanosheets can improve the electrical conductivity and chemical stability of the composite, the WS 2 layer can provide additional active sites and pseudocapacitance to enhance the electrochemical properties. , Therefore, the ternary composite (PANI/G-LS/WS 2 -LS) is expected to have excellent electrochemical performances and long-term cycling stability . The EDS element mapping images shown in Figure d suggest that C, N, O, S, and W are evenly distributed in the composite sample.…”

Section: Resultsmentioning

confidence: 99%

“…While the lamellar structure is beneficial to the electron transportation in the in-plane direction and the formation of numerous microscale electrical double-layer capacitors (EDLCs), WS 2 -LS can provide additional pseudocapacitance by participating in Faradaic redox reactions. Additionally, the −SO 3 – groups in LS can effectively promote the Faradaic redox reactions by enriching the H + in the surrounding of PANI/G-LS/WS 2 -LS during charging and discharging processes. ,, …”

Section: Resultsmentioning

confidence: 99%

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Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Tao

et al. 2023

Energy Fuels

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Integrating polyaniline (PANI) with two-dimensional (2D) nanostructures is a promising strategy to improve electrochemical performance. In this work, 2D laminar van der Waals heterostructures of graphene and WS 2 nanosheets were prepared for the enhancement of the supercapacitive performance of PANI. With well-dispersed graphene/WS 2 nanosheet hybrids (G-LS/WS 2 -LS) as deposition supports, the in situ polymerization of aniline delivered a ternary nanocomposite PANI/G-LS/WS 2 -LS. Benefiting from the good electrical conductivity and chemical stability of graphene, as well as the high redox activity of WS 2 , the ternary nanocomposite (PANI/G-LS/WS 2 -LS) exhibited significantly enhanced electrochemical performance as compared with PANI. Typically, a high specific capacitance of 421.5 F/g was delivered at a current density of 1 A/g in a three-electrode system, which is more than 1.5 times that of PANI (274.1 F/g at 1 A/g). Additionally, the symmetric supercapacitor based on PANI/G-LS/WS 2 -LS showed good electrochemical stability with a 71.6% capacitance retention after 10,000 cycles at 5 A/g and a high specific energy of 9.96 W h/kg at a specific power of 250.04 W/kg. The study provides a facile approach to boost the electrochemical performance of conductive polymers for efficient and reliable energy storage.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Tao

et al. 2023

Energy Fuels

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“…To quantify the total charge‐storage contribution, the Trasatti method was employed. [ 46 ]

Q_{total} = Q_{in} + Q_{out}

where

Q_{total}

refers to total charge capacitance contribution,

Q_{in}

is the inner contribution (diffusion‐controlled) process, and

Q_{out}

is the outer contribution (surface‐confined) process.…”

Section: Resultsmentioning

confidence: 99%

Microwave‐Induced Rapid Synthesis of MoS₂@Cellulose Composites as an Efficient Electrode Material for Quasi‐Solid‐State Supercapacitor Application

2023

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Transition‐metal dichalcogenides (TMDs) are highly desired for energy‐storage devices due to their intrinsic layered structure, huge surface area, and the large number of active sites. However, the TMDs fail to reach their potential due to restacking of 2D layered structures that remains a major technological hurdle. Herein, MoS2 nanosheets and cellulose fiber binary composite (MoS2@Cellulose) prepared by the microwave‐assisted technique are demonstrated as an electrode material for supercapacitor application. The prepared material are tested in symmetric and asymmetric all solid‐state device assemblies. It is found that the quasi‐solid‐state symmetric and quasi‐solid‐state asymmetric supercapacitors exhibited remarkably higher specific capacitance of ≈294 and ≈177 F g−1 at a current density of 1 A g−1, respectively, than their counterpart. Furthermore, the symmetric and asymmetric devices deliver excellent energy densities of ≈40.84 and ≈42.67 Wh kg−1 while maintaining the power density of 400 and 791.81 W kg−1, respectively, and outstanding cyclic stability. The cellulose entanglement causes a reduction in the aggregation and restacking of MoS2, which may improve the electrochemical performance of the supercapacitor. Herein this research, a pathway is provided to create an efficient energy‐storage system using 2D materials with sustainable cellulose.

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“…Focused on the rapid depletion of fossil fuels and increasing energy demand, researchers are dedicating their efforts to optimizing the use of existing energy sources [30,31] . Supercapacitors have attracted increasing attention due to their many advantages, including faster charge/discharge, high power density, and small size, long life, and relatively low cost, and are divided into pseudocapacitors and electric double‐layer capacitors [32–35] . Pseudocapacitors usually have much higher specific capacitance loading and were stored and released near the electrode surface in Faraday processes.…”

Section: Introductionmentioning

confidence: 99%

NiS/MoS₂ Anchored Multiwall Carbon Nanotube Electrocatalyst for Hydrogen Generation and Energy Storage Applications

et al. 2023

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Although sulfide‐based materials are known to be efficient catalysts for oxygen evolution reactions (OER), hydrogen evolution reactions (HER), and supercapacitor applications, improving the catalytic activity of sulfide materials for both electrochemical water splitting and supercapacitors remains a challenging problem. Here, an easy and one‐step integrated methodology is implemented to develop NiS/MoS2 anchored multiwall carbon nanotubes (MWCNT/NiS/MoS2) catalysts that can effectively and robustly catalyze both the HER and OER. The MWCNT/NiS/MoS2 hybrid composite offers the lowest overpotential of 201 mV and 193 mV to achieve a current density of 10 mA/cm2 and −10 mA/cm2 with a small Tafel slope of 58 mV/dec 41 mV/dec for OER and HER, respectively, in alkaline and acidic conditions. The obtained multi‐walled carbon nanotubes anchored with intertwined NiS/MoS2 have a significant number of active sites and defects throughout the structure. The hybrid composite electrode delivered a specific capacitance of >371.45 F/g at 2 A/g in a two‐electrode system, along with high energy density of 51.63 Wh/kg (ED) along with the power density (PD) of 953.63 W/kg, and good capacitance retention ∼82% after 2000 cycles. Therefore, a tandem electron transfer mechanism between NiS and MoS2 (MoS2→NiS) is believed to have an electrical synergistic effect that promotes both HER and OER activity. This research opens a new path for the construction of multi‐component, cheap electrocatalysts that are highly effective for overall water splitting and energy storage applications.

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Synergistically modified WS₂@PANI binary nanocomposite-based all-solid-state symmetric supercapacitor with high energy density

Abstract: The rapid development of intelligent, wearable, intelligent, compact electronic equipment has triggered the need for durable, flexible, and lightweight portable energy storage devices. The nanomaterials capable of delivering the higher...

Cited by 24 publications

References 66 publications

Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Microwave‐Induced Rapid Synthesis of MoS₂@Cellulose Composites as an Efficient Electrode Material for Quasi‐Solid‐State Supercapacitor Application

NiS/MoS₂ Anchored Multiwall Carbon Nanotube Electrocatalyst for Hydrogen Generation and Energy Storage Applications

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Synergistically modified WS2@PANI binary nanocomposite-based all-solid-state symmetric supercapacitor with high energy density

Abstract: The rapid development of intelligent, wearable, intelligent, compact electronic equipment has triggered the need for durable, flexible, and lightweight portable energy storage devices. The nanomaterials capable of delivering the higher...

Cited by 24 publications

References 66 publications

Heterolayered 2D Nanohybrids of Graphene-WS2 Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Heterolayered 2D Nanohybrids of Graphene-WS2 Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Microwave‐Induced Rapid Synthesis of MoS2@Cellulose Composites as an Efficient Electrode Material for Quasi‐Solid‐State Supercapacitor Application

NiS/MoS2 Anchored Multiwall Carbon Nanotube Electrocatalyst for Hydrogen Generation and Energy Storage Applications

Contact Info

Product

Resources

About

Synergistically modified WS₂@PANI binary nanocomposite-based all-solid-state symmetric supercapacitor with high energy density

Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Heterolayered 2D Nanohybrids of Graphene-WS₂ Nanosheets: Enabling Enhanced Supercapacitive Performance of Polyaniline

Microwave‐Induced Rapid Synthesis of MoS₂@Cellulose Composites as an Efficient Electrode Material for Quasi‐Solid‐State Supercapacitor Application

NiS/MoS₂ Anchored Multiwall Carbon Nanotube Electrocatalyst for Hydrogen Generation and Energy Storage Applications