MOF derived Ni-Co-S nanosheets on electrochemically activated carbon cloth via an etching/ion exchange method for wearable hybrid supercapacitors

Zhao, Wei; Zheng, Yiwei; Cui, Liang; Jia, Dedong; Wei, Di; Zheng, Rongkun; Barrow, Colin J.; Yang, Wenrong; Liu, Jingquan

doi:10.1016/j.cej.2019.04.070

Cited by 267 publications

(110 citation statements)

References 42 publications

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“…The nonuniform morphology may lead to the interruption of ions transport and weak adhesion to carbon cloth, adversely affecting the electrochemical properties, which will be discussed Figure 2a shows the XRD patterns of carbon cloth-supported LMO/MnO electrode, where the phase composition and structures are confirmed. The broad peak around 25° corresponds to the carbon cloth, coincides with some previous reports which contain active materials grown on carbon cloth [33,34]. From XRD patterns, LMO is indexed to be orthorhombic with the space group of (JCPDS 89-2472), and MnO exhibits a cubic structure with 3 space group (JCPDS 75-0257).…”

Section: Phase Structure and Morphologysupporting

confidence: 88%

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected.

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Section: Phase Structure and Morphologysupporting

confidence: 88%

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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“…Besides, the strong peak around 169.2 eV is surface sulfur in high oxidation state . [31] As for the C 1s spectrum in Figure S1a The electrochemical behavior of the as-made electrodes was measured in a three-electrode cell using 6 M KOH as electrolyte. It's necessary to make a survey of the effect of mass concentration on the electrochemical behavior of the samples.…”

Section: Resultsmentioning

confidence: 99%

Sulfidation of Hierarchical NiAl−LDH/Ni−MOF Composite for High‐Performance Supercapacitor

Zheng¹,

Sun²,

Xu³

et al. 2019

ChemElectroChem

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Designing nanocomposites with good electrochemical properties is the key to studying electrode materials for supercapacitors. In this paper, we report a well‐defined composite (NiAl‐LDH/Ni−MOF/S) prepared in three steps. After the synthesis of LDH nanoplates through a hydrothermal method, the MOF nanosheets were grown on its surface by in situ nucleation. In this procedure, the synergistic effect of MOF and LDH will improve the specific capacitance. Afterwards, the composite was subjected to a sulfidation treatment to enhance its electrical conductivity. Consequently, the NiAl‐LDH/Ni−MOF/S has an excellent specific capacitance (1670 F g−1 at 1 A g−1) and rate capability (65 % from 1 to 30 A g−1). Moreover, an asymmetric supercapacitor (ASC) was assembled with NiAl‐LDH/Ni−MOF/S as cathode and activated carbon as anode. The ASC displays a maximum energy density (35.4 Wh kg−1) and outstanding cycle stability (retention of 96.4 % after 10000 cycles at 10 A g−1), demonstrating the potential of the electrode for use in high‐efficiency electrochemical capacitors.

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“…Besides, 2D MOF‐derived vertically aligned TMC/carbon nanosheet composites can be fabricated by first in situ formation of Co–MOF or Zn–MOF precursors, followed by post‐treatment like annealing, ion exchange/etching, or hydrothermal procedures. The derived inorganic nanocomposites like Co 3 O 4 , [ 256 ] Co(VO 3 ) 2 –Co(OH) 2 , [ 257 ] Ni–Co–S, [ 121,196,258 ] Ni–Zn–Co–S, [ 213 ] Zn–Co–S, [ 197 ] Zn–Co–O, [ 259 ] Fe–Co–S, [ 260 ] Zn 0.76 Co 0.24 S/NiCo 2 S 4 , [ 261 ] (Ni, Co)Se 2 , [ 262 ] CoMn–LDH, [ 263 ] CoS 2 , [ 129 ] and NiCo 2 O 4 [ 264 ] have been reported as flexible electrodes for SCs. Kong et al.…”

Section: Strategies For Improving Electrochemical Activity Of Tmcsmentioning

confidence: 99%

Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials

Lyu

Antink

Kim

et al. 2021

Small

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Flexible and stretchable supercapacitors (FS‐SCs) are promising energy storage devices for wearable electronics due to their versatile flexibility/stretchability, long cycle life, high power density, and safety. Transition metal compounds (TMCs) can deliver a high capacitance and energy density when applied as pseudocapacitive or battery‐like electrode materials owing to their large theoretical capacitance and faradaic charge‐storage mechanism. The recent development of TMCs (metal oxides/hydroxides, phosphides, sulfides, nitrides, and selenides) as electrode materials for FS‐SCs are discussed here. First, fundamental energy‐storage mechanisms of distinct TMCs, various flexible and stretchable substrates, and electrolytes for FS‐SCs are presented. Then, the electrochemical performance and features of TMC‐based electrodes for FS‐SCs are categorically analyzed. The gravimetric, areal, and volumetric energy density of SC using TMC electrodes are summarized in Ragone plots. More importantly, several recent design strategies for achieving high‐performance TMC‐based electrodes are highlighted, including material composition, current collector design, nanostructure design, doping/intercalation, defect engineering, phase control, valence tuning, and surface coating. Integrated systems that combine wearable electronics with FS‐SCs are introduced. Finally, a summary and outlook on TMCs as electrodes for FS‐SCs are provided.

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MOF derived Ni-Co-S nanosheets on electrochemically activated carbon cloth via an etching/ion exchange method for wearable hybrid supercapacitors

Cited by 267 publications

References 42 publications

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Sulfidation of Hierarchical NiAl−LDH/Ni−MOF Composite for High‐Performance Supercapacitor

Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials

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