Screen printed textile electrodes using graphene and carbon nanotubes with silver for flexible supercapacitor applications

Keawploy, Norawich; Venkatkarthick, Radhakrishnan; Wangyao, Panyawat; Qin, Jiaqian

doi:10.55713/jmmm.v30i4.892

Cited by 11 publications

(2 citation statements)

References 22 publications

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“…In contrast, metal oxides play an important role in increasing hybrid capacitance by providing synergetic effects and redox reactions [18]. Up to now, supercapacitors such as PANI/graphene, MoS2@ CNT/RGO, NiO/MoS2/rGo, NiS2@MoS2, and MnO2/Graphene have been introduced that offer significant capacity compared to 2D individual electrodes [5,[19][20][21][22][23]. Tungsten disulfide (WS2) is another 2D material that has recently been welcomed by researchers in energy applications thanks to its layered structure which allows ions to penetrate into it leading to energy storage through the intercalation process.…”

Section: Introductionmentioning

confidence: 99%

Tungsten disulfide-nickel oxide hybrids as high-performance supercapacitors

HRBE

HASHIM

2022

J Met Mater Miner

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Two-dimensional materials are suitable for energy storage applications due to their chemical stability, high electrical conductivity and large specific surface area. In this work, tungsten disulfide (WS2) nanosheets were synthesized by chemical exfoliation method and combined with nickel oxide (NiO) nanoparticles to be used as a working electrode for storing energy. The WS2 electrode alone shows a capacitance of about 21.87 mF⸳cm-2, which is improved up to 64.58 mF⸳cm-2 by adding NiO nanoparticles. The occurrence of redox reactions plays an important role in increasing the final capacitance. Moreover, the proposed hybrid maintains 93% of its initial capacitance after 5000 charge-discharge cycles, which indicates its stable and reliable performance.

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Section: Introductionmentioning

confidence: 99%

Tungsten disulfide-nickel oxide hybrids as high-performance supercapacitors

HRBE

HASHIM

2022

J Met Mater Miner

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“…The workpiece may be damaged, and the packing may be leaked resulting in some electrolyte scattered. The increasing of specific capacitance can be achieved by encapsulation efficiency.. [36]…”

Section: Chapter 5 Conclusionmentioning

confidence: 99%

Preparation of Ag-CNTs and Ag-Graphene nanocomposite and their combination with MnO2 bath deposition for flexible supercapacitor development.

Keawploy

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Nowadays, researchers have made great efforts on the development of flexible and light weight energy storage devices for their practical applications and the advancement of modern electronic devices. Owing to the promising feathers of high specific power, high rate capability, and long-term cycling life, the supercapacitors (SCs) are considered as highly suitable for various flexible applications. In general, the carbon-based nanomaterials such as carbon nanotubes and graphene nanosheets, exhibit good supercapacitor performance. Manganese dioxide (MnO2) are widely studied for pseudocapacitors owing to their high specific capacitance, high power, and energy density. Thus, MnO2 was applied to increase the supercapacitor performance of carbon materials. However, most of the reported SCs are bulk, heavy, and non-flexible, which are not suitable for wearable energy technology. To overcome these challenges, flexible supercapacitors (FSCs) are developed to meet the wearable electronics. The cotton cloth materials are widely considered for flexible substrates due to inexpensive natural fiber, highly hydrophilic and light weight. In this work, the conductive cotton was successfully prepared by the screen-printing method using the developed ink. The designed textile ink and silver powder mixture demonstrates an outstanding conductivity. The prepared conductive cotton reached a low resistance of less than 15 ohm/cm2. Furthermore, the supercapacitor electrodes were also fabricated by mixing the active materials (CNT, and graphene) into the developed ink. Among these different carbon electrodes, the CNT electrodes show superior electrochemical performance (78.49 mF/cm2 at 0.1 mA/cm2).� To further enhance the specific capacitance, the MnO2 was coated on the electrodes by chemical bath deposition (CBD) using potassium permanganate and sulfuric acid solution. The specific capacitance of as high as 741.83 mF/cm2 at 0.1 mA/cm2 was achieved. Finally, the flexible supercapacitor device was also successfully fabricated, which exhibited a high specific areal capacitance of 677.12 mF/cm2 at 0.0125 mA/cm2 for CNT electrodes. The flexible device also shows excellent rate performance and cyclic stability with capacitance retention of 80% for 3000 cycles, demonstrating that advanced flexible energy storage devices can be achieved.

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Modification Strategies of Layered Double Hydroxides for Superior Supercapacitors

Zhang

Cao

Zhang

et al. 2022

Adv Energy and Sustain Res

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Layered double hydroxides (LDHs), as classic 2D materials, have received worldwide attention in electrochemical energy storage devices due to its superior ion insertion rate and ultrahigh specific capacitance. However, the poor conductivity, severe aggregation limited capacitance, and unsatisfied internal stability have become the main factors hinder its further development as the electrode of supercapacitor. In recent years, various strategies on the modification of the LDHs’ structure, composition, properties, and fabrication have been demonstrated to effectively improve their electrochemical performance, and fruitful achievements have been made. However, there is a lack of systematic summary on the functional mechanisms and effects of various modification strategies. Herein, this review gives a comprehensive introduction of the modification strategies based on LDHs for superior supercapacitor, including active metal ions adjustment, intercalated ions adjustment, morphology optimization, conductivity enhancement and internal stability enhancement. Particularly, an in‐depth and fundamental understanding on the effects and mechanisms of modification on LDHs’ electrochemical properties and performance. Furthermore, the general performance metrics of above strategies, the potential directions and perspectives for further research are proposed.

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Screen printed textile electrodes using graphene and carbon nanotubes with silver for flexible supercapacitor applications

Cited by 11 publications

References 22 publications

Tungsten disulfide-nickel oxide hybrids as high-performance supercapacitors

Tungsten disulfide-nickel oxide hybrids as high-performance supercapacitors

Preparation of Ag-CNTs and Ag-Graphene nanocomposite and their combination with MnO2 bath deposition for flexible supercapacitor development.

Modification Strategies of Layered Double Hydroxides for Superior Supercapacitors

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