Layered molybdenum disulfide coated carbon hollow spheres synthesized through supramolecular self‐assembly applied to supercapacitors

Yang, Kemeng; Gao, Aimei; Wu, Haojun; Yi, Fenyun; Shu, Dong; Li, Xia; Xie, Lin

doi:10.1002/er.5447

Cited by 18 publications

(10 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest power density obtained for the same was 5556.2 W kg −1 . [145] The corresponding specific surface areas of all the electrode materials presented in Table 1 have been plotted in Figure 5a. Similarly, Figure 5b-e draws a comparison among the unconventional and conventional electrode systems based on the specific capacitances and average pore sizes of the electrodes, as well as the maximum energy densities, and maximum power densities (also presented in Table 1) of the as-designed supercapacitor devices, respectively.…”

Section: Comparison With Conventional Electrodesmentioning

confidence: 99%

“…[ 131–136 ] Predominantly, these materials include carbon nanotubes (CNTs), graphene, carbon spheres, hollow carbon spheres, carbon nanoparticles (CNPs), etc. [ 62,137–145 ] Nevertheless, they fail to demonstrate the desirable performance in practical applications after a certain threshold owing to their short durability and low energy density. Although, metal‐organic frameworks (MOFs) have proven to be better electrode candidates in certain aspects, [ 142,143,146–148 ] however, these materials incur high cost, low yield of porous carbon, high consumption of metallic nitrate, [ 62 ] and hence higher waste generation.…”

Section: Solid Waste Materials In Supercapacitor Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Dutta

Mahanta

Banerjee

2020

Advanced Sustainable Systems

View full text Add to dashboard Cite

Supercapacitors store electrical energy on the basis of electrostatic attraction between opposite charges as a result of the formation of an electric double layer (EDL) at the electrolyte/electrode interface. Carbon-derived materials are commonly used to fabricate supercapacitor electrodes owing to their high electrical conductivity, high capacitance, excellent porosity, good electrochemical stability, and large specific surface area. [131-136] Predominantly, these materials include carbon nanotubes (CNTs), graphene, carbon spheres, hollow carbon spheres, carbon nanoparticles (CNPs), etc. [62,137-145] Nevertheless, they fail to demonstrate the desirable performance in practical applications after a certain threshold owing to their short durability and low energy density. Although, metal-organic frameworks (MOFs) have proven to be better electrode candidates in certain aspects, [142,143,146-148] however, these materials incur high cost, low yield of porous carbon, high consumption of metallic nitrate, [62] and hence higher waste generation. Due to the rising concerns of waste production and its management and hence the need for sustainable and cheap resources, reusing and/or converting waste from various sources such as industrial, agricultural, food, and spent electronic devices efficiently into usable carbon has attracted much interest since recently.

show abstract

Section: Comparison With Conventional Electrodesmentioning

confidence: 99%

Section: Solid Waste Materials In Supercapacitor Fabricationmentioning

confidence: 99%

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Dutta

Mahanta

Banerjee

2020

Advanced Sustainable Systems

View full text Add to dashboard Cite

show abstract

“…Much work has been done to overcome this problem, like the combination of MoS 2 with carbonaceous materials and CPs. [30][31][32] Recent studies have shown that MoS 2 /PEDOT:PSS electrode composites are particularly interesting because they can lead to high capacitances due to the pseudocapacitive effect of both materials. Ge et al 33 reported a supercapacitor electrode based on MoS 2 / PEDOT:PSS composite films produced by filtration with a great volumetric capacitance of 141.4 F cm −3 and remarkably long-term cyclability (98.6%).…”

Section: Introductionmentioning

confidence: 99%

“…One of the many drawbacks of using MoS 2 as supercapacitors electrodes is its low conductivity. Much work has been done to overcome this problem, like the combination of MoS 2 with carbonaceous materials and CPs 30‐32 …”

Section: Introductionmentioning

confidence: 99%

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

2021

View full text Add to dashboard Cite

Here we present the study of supercapacitors based on molybdenum disulfide and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (MoS 2 /PEDOT: PSS) composite electrodes deposited by spray-coating. To produce the MoS 2 / PEDOT:PSS composite ink, dispersions of hydrothermally synthesized MoS 2 and PEDOT:PSS were mixed in different weight proportions. Electrodes containing only PEDOT:PSS and MoS 2 were also fabricated for comparison. The composite films were deposited by transferring the as-prepared inks to an airbrush coupled to a modified 3D printer base with in-line displacement. The films were characterized in terms of the scanning electron microscope (SEM), Raman spectroscopy, and sheet resistance. The electrochemical properties of supercapacitors were evaluated by cyclic voltammetry (CV), galvanostatic charge/discharges (GCD) techniques, impedance spectroscopy (IS), and their correlated parameters. The maximum specific capacitance of the MoS 2 -basedsupercapacitor was estimated to be 145.9 F g −1 at 1 mV s −1 , while the 3:1 MoS 2 /PEDOT:PSS weight ratio supercapacitor exhibited a specific capacitance of 131.1 F g −1 . Despite the slightly lower C SP , the 3:1 device provided a better overall performance, with a remarkably higher energy density of 11.2 Wh kg −1 and a maximum power density of 1020 W kg −1 . It also displayed better longterm cycle stability, retaining 92% of its initial capacitance after 1000 CV cycles (against 54% of MoS 2 devices). In summary, we demonstrated the study and production of a high-performance supercapacitor with spray-deposited MoS 2 / PEDOT:PSS composite electrodes, in which the production can be easily scalable for mass production and practical applications.

show abstract

“…which are advantageous for improving the contact of the electrode with electrolyte and providing much shorter transport pathways for electrolyte ions and electrons. 13,14 These advantages endow porous and hollow carbon materials with excellent rate performances and long cycling stability. Generally, the used electrode materials are nonrenewable and/or involve complicated preparation processes and high costs.…”

mentioning

confidence: 99%

Interconnected hierarchical porous carbon synthesized from freeze‐dried celery for supercapacitor with high performance

Tian

Liang

et al. 2021

Int J Energy Res

View full text Add to dashboard Cite

With the increasing challenge of energy, resource, and environment, it is highly desired to develop renewable energy and corresponding efficient energy storage technologies basing on reproducible materials. Recently, using biomass and biotechnology to prepare electrode material for energy storage devices is gaining growing attention. Here, we use biomass, celery, as a material source and developed a new way to prepare highly qualified graphitized porous carbon. Besides, instead of direct carbonization, the celery is first freeze-dried to protect the original elements and structure of biomass. Furthermore, to sculpture more nanoscale pores in the produced material, the following carbonization process is also greatly modified by investigating proper carbonization temperature and time. Therefore, the interconnected hierarchical porous structure can be formed based on the protected original pores with size of micrometers and the newly formed pores with size of nanometers. The resulted interconnected hierarchical porous carbon is used to prepare supercapacitor electrode and exhibit excellent energy storage properties. Without any extra activating or doping process, the specific capacitance of the resulted electrode reached 350.0 F g −1 at 1 A g −1 , which is 5.28 times of that of directly carbonized material. And the power density reached 8.0 kW kg −1 with the energy density maintaining 16.3 Wh kg −1 . K E Y W O R D Sbiomass, eco-friendly, freeze-drying, porous carbon, supercapacitor | INTRODUCTIONSupercapacitors have attracted great attention because of their large specific capacitance(C s ), high power density, and excellent cycling stability. [1][2][3] The performances of supercapacitor mainly depend on the structure and property of electrode materials, including specific surface area (SSA), conductivity, structure stability, and electrochemical reaction activity. 4,5 At present, most of the researches have been focused on introducing metal oxides, such as RuO 2 , Fe 3 O 4 , and MnO 2 , conductive polymer, carbon nanomaterials, such as carbon nanotubes, graphene, porous carbon, and their composites. 1,[6][7][8][9][10][11][12] For example, the porous and hollow carbon spheres have been widely investigated as electrodes materials because of their high SSA, excellent structural stability, and good conductivity, Yingying Ma and Jinyong Tian contributed equally to this work.

show abstract

Layered molybdenum disulfide coated carbon hollow spheres synthesized through supramolecular self‐assembly applied to supercapacitors

Cited by 18 publications

References 59 publications

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

Interconnected hierarchical porous carbon synthesized from freeze‐dried celery for supercapacitor with high performance

Contact Info

Product

Resources

About