Microwave-assisted synthesis of CoAl-layered double hydroxide/graphene oxide composite and its application in supercapacitors

Fang, Jihong; Li, Min; Li, Qianqian; Zhang, Weifeng; Shou, Qingliang; Liu, Fu; Zhang, Xiaobin; Cheng, J.P.

doi:10.1016/j.electacta.2012.08.078

Cited by 197 publications

(88 citation statements)

References 39 publications

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“…In those cases, in fact, first we have to recover the LDH powder, treat it, and only after these passages, deposit it onto substrate by means of physical procedures with not the same reproducibility and morphology. Recently sol-gel technique attracted much interest not only to involve other metals, but also to produce modified electrodes for applications in several different fields of electrochemical sensing [25][26][27][28][29].…”

Section: Electrochemical Depositionmentioning

confidence: 99%

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Richetta¹

2017

J Material Sci Eng

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The peculiar properties of layered Double Hydroxides (LDH) have progressively drawn the attention of the scientific community. The main characteristic of LDH is the ability to capture anionic species (organic and inorganic) to build different composites. This is made possible by the sandwich structure of the LDH, similar to the brucite architecture, made up of positive charged lamellas interspersed by anions. Several distant fields, ranging from medicine to physics and engineering, exhibit interest in LDH applications. To satisfy all those requirements, energy was spent to sculpt LDHs physical and chemical properties and for designing layered double hydroxides "ad hoc" for different needs and employments. Notably, among the many applications, those related to metallurgical processes and products are of particular interest. This paper presents the characteristics, the main preparation routes and reviews the applications of LDH to metallurgy with some examples taken from the experimental research of the author.

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Section: Electrochemical Depositionmentioning

confidence: 99%

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Richetta¹

2017

J Material Sci Eng

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“…However, the poor electric conductivity of LDHs affects their charge transfer ability resulting in a poor charge and discharge capability that affects their electrochemical performance when used as electrode materials 28,35,36 . It has been established that modifying the LDH with carbon materials to prepare composites is one of the most effective strategies to increase the conductivity as well as the electrochemical properties of LDH 28,[37][38][39] stainless-steel autoclave and kept at a temperature of 120° C for 18 h. After cooling to room temperature, the pinkish product was repeatedly washed with deionized water and ethanol several times to remove any unreacted precursor and residual. Thereafter, drying was done at 60° C for 6 h to obtain the final product.…”

Section: Introductionmentioning

confidence: 99%

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

et al. 2016

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An asymmetric supercapacitor fabricated with CoAl-layered double hydroxide/graphene foam (LDH/GF) composite as the positive electrode and activated carbon derived from expanded graphite (AEG) as negative electrode in aqueous 6 M KOH electrolyte is reported. This CoAl-LDH/GF//AEG cell achieved a specific capacitance of 101.4 F g -1 at a current density of 0.5 A g -1 with a maximum energy density as high as 28 Wh kg -1 and a power density of 1420 W kg -1 . Furthermore, the supercapacitor also exhibited an excellent cycling stability with ∼ 100% capacitance retention after 5000 charging-discharging cycles at a current density of 2 Ag -1 . The results obtained show the potential use of the CoAl-LDH/GF//AEG material as suitable electrode for enhanced energy storage as supercapacitor.

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“…Zhang et al reported the electrochemical performance of CoAl-LDH for supercapacitors with a specific capacitance of 187 F g -1 at 2 A g -1 by a "memory effect" route [17]. Other composites based on carbon materials such as carbon nanotubes, activated carbon and graphene for the application in high-performance supercapacitors have been reported [18][19][20].…”

Section: Introductionmentioning

confidence: 97%

Exfoliation-restacking synthesis of coal-layered double hydroxide nanosheets/reduced graphene oxide composite for high performance supercapacitors

Huang

Wang

et al. 2015

Electrochimica Acta

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Microwave-assisted synthesis of CoAl-layered double hydroxide/graphene oxide composite and its application in supercapacitors

Cited by 197 publications

References 39 publications

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

Exfoliation-restacking synthesis of coal-layered double hydroxide nanosheets/reduced graphene oxide composite for high performance supercapacitors

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