Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide

Xiao, Yuanhua; Su, Dangcheng; Wang, Xuezhao; Wu, Shao-Yi; Zhou, Liming; Sun, Zhenhua; Wang, Zhenxing; Fang, Shaoming; Li, Feng

doi:10.1016/j.electacta.2017.09.033

Cited by 60 publications

(26 citation statements)

References 47 publications

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“…Moreover, due to the features of multiple oxidation states, high electrical conductivity, tunable ratio of metallic elements, high theoretical capacitances, environment‐friendly, and low cost, 2D LDHs also have been regarded as a promising candidate in electrochemical energy‐storage electrodes . Huang et al reported a template‐assisted electrodeposition method to synthesize nickel–cobalt (Ni–Co) LDH shell with the Ni–Co metallic core (Ni–Co@Ni–Co LDH) on carbon fiber cloth (CFC) to form a structure of Ni–Co@Ni–Co LDH nanotube array/CFC .…”

Section: Pristine 2d Materials For Micro‐supercapacitorsmentioning

confidence: 99%

Engineering 2D Architectures toward High‐Performance Micro‐Supercapacitors

et al. 2018

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The rise of micro-supercapacitors is satisfying the demand for power storage in portable devices and wireless gadgets. But the miniaturization of the energy-storage components is significantly limited by their energy density. Electrode materials with adequate electrochemical active surfaces are therefore required for improving performance. 2D materials with ultralarge specific surface areas offer a broad portfolio of the development of high-performance micro-supercapacitors in spite of their several critical drawbacks. An architecture engineering strategy is therefore developed to break these natural limits and maximize the significant advantages of these materials. Based on the approaches of phase transformation, intercalation, surface modification, material hybridization, and hierarchical structuration, 2D architectures with improved conductivity, enlarged specific surface, enhanced redox activity, as well as the unique synergetic effect exhibit great promise in the application of miniaturized supercapacitors with highly enhanced performance. Herein, the architecture engineering of emerging 2D materials beyond graphene toward optimizing the performance of micro-supercapacitors is discussed, in order to promote the application of 2D architectures in miniaturized energy-storage devices.

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Section: Pristine 2d Materials For Micro‐supercapacitorsmentioning

confidence: 99%

Engineering 2D Architectures toward High‐Performance Micro‐Supercapacitors

et al. 2018

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“…The Co 2p spectra (Fig. 1d, CoAl(DS -)-LDH) exhibited two main peaks at 781.7 eV and 797.7 eV with a spin-orbit splitting of 16 eV, corresponding to Co 2p 2/3 and Co 2p 1/2 , respectively [26]. Depending on the full-spectra (Fig.…”

Section: Resultsmentioning

confidence: 99%

Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance

Xiao

Wang

et al. 2017

Sci. China Mater.

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“…Recently, the applications of LDHs in the field of supercapacitors as battery-type materials have been attracted attention because of their high regulation of dominant compositions without the structure transformation. For instance, Ni-Co-Al-LDHs achieved high specific capacitance by Xiao et al [23], where 2369 F/g was observed at a current density of 1 A/g. In addition, Jagadale et al reported that the maximum specific capacitance of Co-Mn LDHs was observed at the current density of 0.7 A/g and was 1063 F/g with 96% cycling stability for 5000 cycles [24].…”

Section: Introductionmentioning

confidence: 99%

“…Although, wide variety of materials has tested for supercapacitors [23][24][25][26][27], Ni-Ti LDHs have seldom been investigated in this field. Ni-Ti-cyanate LDHs have not reported, not even by the latest literature available [26,27].…”

Section: Introductionmentioning

confidence: 99%

Development of Ti/Ni Nanolayered Structures to Be a New Candidate for Energy Storage Applications

2020

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Development of electrochemical supercapacitor electrode is the best way to improve the performance and conductivity of the alone materials and support energy storage devices. In this work, cyanate anions have used as building blocks to build series of nanolayered materials based on Ti/Ni layered double hydroxides (LDHs). The structural and morphological characteristics of the prepared Ti/Ni LDHs were examined using different techniques. The electrochemical supercapacitive behavior of the prepared LDHs was observed in the three-assembly electrochemical cell. These results showed that the optimized ratio of the nickel and titanium plays an important role to enhance the electrochemical performance of the LDHs. The optimized Ti/Ni LDHs, which has the highest content of titanium, showed the highest specific capacitance (675 F/g) value. In this trend, this LDH also retain a high percentage of the cyclic retention after long cyclic charging-discharging process. The enhanced performance could be due to the double layer structure, enough interplanar distance between the layer, and large number of exposed active site within the double layer structure of the LDHs. Finally, although there are no reports for the electrochemical supercapacitive performance of Ti/Ni LDHs in the literature, it is interesting to produce a new candidate for energy storage applications.

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Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide

Cited by 60 publications

References 47 publications

Engineering 2D Architectures toward High‐Performance Micro‐Supercapacitors

Engineering 2D Architectures toward High‐Performance Micro‐Supercapacitors

Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance

Development of Ti/Ni Nanolayered Structures to Be a New Candidate for Energy Storage Applications

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