Morphological control of RGO/CdS hydrogels for energy storage

Zhang, Xueyu; Ge, Xin; Sun, Shihan; Qu, Yuanduo; Chi, Wenzhong; Chen, Chuandong; Lü, Wei

doi:10.1039/c5ce02038g

Cited by 40 publications

(18 citation statements)

References 33 publications

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“…To address these issues various research groups have employed many strategies like self‐cross linking, fabrication of metal/metal oxide nanoparticles, supramolecular inspired synthesis of hydrogels, graphene quantum dots (GQDs) etc . Duan et al reported an asymmetric supercapacitor consisting graphene hydrogel (GH) with 3D interconnected pores as negative electrode and MnO 2 nanoplate on nickel foam as positive electrode.…”

Section: Synthetic Approaches For Selected Hydrogelsmentioning

confidence: 99%

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Hydrogels: Promising Energy Storage Materials

Savan

Veer

2018

ChemistrySelect

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Energy is essential for the economic growth of any country. There is a strong demand for the development of materials that can show potential towards higher power density and energy density. In this article, a promising class of polymeric materials, hydrogels have been discussed as an energy storage material. The hydrogels are advantageous as they possess in them the unique combination of organic conductors and conventional polymers. The article covers the synthetic approach of hydrogels which includes both the conventional synthesis and the new routes adopted followed by the application of hydrogels as energy storage materials. Finally, the future opportunities and prospects in the development of hydrogels as advanced energy storage materials are highlighted.[a] Dr.

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Section: Synthetic Approaches For Selected Hydrogelsmentioning

confidence: 99%

“…This 3D porous composite hydrogel served as binder‐free electrode for supercapacitor . Another new 3D reduced graphene/CdS hydrogels (RGO/CdS) was prepared via facile hydrothermal process . The modified Hummers method was used for the synthesis of GO.…”

Section: Synthetic Approaches For Selected Hydrogelsmentioning

confidence: 99%

Hydrogels: Promising Energy Storage Materials

Savan

Veer

2018

ChemistrySelect

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“…Also, transition metal sulfides are very good candidates as electrode materials for high energy density supercapacitor; they possess variable sulfide states which facilitate fast and successive redox reactions . Cadmium sulfide (CdS) is an example of widely studied ultracapacitive transition metal sulfide . CdS is a n‐type semiconductor with a narrow band gap (∼2.4 eV).…”

Section: Introductionmentioning

confidence: 99%

“…[17,18] Cadmium sulfide (CdS) is an example of widely studied ultracapacitive transition metal sulfide. [19][20][21][22] CdS is a n-type semiconductor with a narrow band gap (~2.4 eV). CdS nanostructures reportedly exhibits excellent morphology and high specific surface area with a particle size in the range of 5-7 nm.…”

Section: Introductionmentioning

confidence: 99%

Cadmium Sulfide Quantum Dots–Organometallic Halide Perovskite Bilayer Electrode Structures for Supercapacitor Applications

et al. 2020

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Supercapacitors are attracting great attention because of their fast charging-discharging ability as well as their high power density. The current research in this area focuses mainly on exploring novel low-cost electrode materials with higher energy and power densities. In this work, thin-film electrochemical capacitors were fabricated using layers of self-synthesized cadmium sulfide quantum dots and organometallic halide perovskite materials as active electrodes. Organometallic halide perovskites exhibit interesting ionic responses as well as extraordinary electronic properties. These properties are exploited in fabricating the electrochemical capacitors, and the devices showed excellent cycling ability with stable capacitance outputs beyond 4000 cycles. Impedance spectroscopy measurements revealed that perovskites do not only serve as active electrodes but also as solid electrolytes, thereby enhancing the capacitance of the devices and hence the energy densities. The layers provide high surface areas for electrolytes to access the electrode materials; reasonably low charge transfer resistance and small relaxation time were also observed. This work opens new opportunities for developing thin-film supercapacitors using low-cost electrode materials and employing a facile, inexpensive solution-process coating.

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“…The porous structure can buffer the large volume change and the agglomerations of electrode, which could be enhanced the cycling performance [16, 17]. So, one-dimensional (1D) nanofibers with porous structure have been demonstrated to be the new structure cathode for LIBs [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrochemical Property of LiMn2O4 Porous Hollow Nanofiber as Cathode for Lithium-Ion Batteries

et al. 2017

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The LiMn2O4 hollow nanofibers with a porous structure have been synthesized by modified electrospinning techniques and subsequent thermal treatment. The precursors were electrospun directly onto the fluorine-doped tin oxide (FTO) glass. The heating rate and FTO as substrate play key roles on preparing porous hollow nanofiber. As cathode materials for lithium-ion batteries (LIBs), LiMn2O4 hollow nanofibers showed the high specific capacity of 125.9 mAh/g at 0.1 C and a stable cycling performance, 105.2 mAh/g after 400 cycles. This unique structure could relieve the structure expansion effectively and provide more reaction sites as well as shorten the diffusion path for Li+ for improving electrochemical performance for LIBs.

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Morphological control of RGO/CdS hydrogels for energy storage

Abstract: This paper investigated the preparation of 3D RGO/CdS hydrogels by a facile hydrothermal process, the morphology control of CdS (ball-like, rod-like, needle-like) in 3D structures, and their application in electrochemical energy storage.

Cited by 40 publications

References 33 publications

Hydrogels: Promising Energy Storage Materials

Hydrogels: Promising Energy Storage Materials

Cadmium Sulfide Quantum Dots–Organometallic Halide Perovskite Bilayer Electrode Structures for Supercapacitor Applications

Synthesis and Electrochemical Property of LiMn2O4 Porous Hollow Nanofiber as Cathode for Lithium-Ion Batteries

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