Co, Mn-LDH nanoneedle arrays grown on Ni foam for high performance supercapacitors

Su, Dongqin; Tang, Zehua; Xie, Jing; Bian, Zhengxu; Zhang, Junhao; Yang, Dandan; Zhang, Di; Wang, Jincheng; Liu, Yi; Yuan, Aihua; Kong, Qinghong

doi:10.1016/j.apsusc.2018.10.276

Cited by 187 publications

(56 citation statements)

References 48 publications

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“…Through a large number of investigations, it was found that the performance of hydroxide electrode materials with a single metal element could not meet the actual needs in many aspects. [161] Therefore, two or more metal elements of hydroxides were often combined to achieve complementary advantages. For example, a core-shell nanosheet structural Co 3 O 4 /CoNi-layered double hydroxide (LDH) electrode material was deposited on NF via the growth of a nanoplate CoNi-LDH shell on the surface of the Co 3 O 4 core (Figure 12b) [162].…”

Section: Co 3 O 4 /Metal Hydroxide Compositesmentioning

confidence: 99%

Recent Advance in Co3O4 and Co3O4-Containing Electrode Materials for High-Performance Supercapacitors

Wang

Meng

et al. 2020

Molecules

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Among the popular electrochemical energy storage devices, supercapacitors (SCs) have attracted much attention due to their long cycle life, fast charge and discharge, safety, and reliability. Transition metal oxides are one of the most widely used electrode materials in SCs because of the high specific capacitance. Among various transition metal oxides, Co3O4 and related composites are widely reported in SCs electrodes. In this review, we introduce the synthetic methods of Co3O4, including the hydrothermal/solvothermal method, sol–gel method, thermal decomposition, chemical precipitation, electrodeposition, chemical bath deposition, and the template method. The recent progress of Co3O4-containing electrode materials is summarized in detail, involving Co3O4/carbon, Co3O4/conducting polymer, and Co3O4/metal compound composites. Finally, the current challenges and outlook of Co3O4 and Co3O4-containing composites are put forward.

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Section: Co 3 O 4 /Metal Hydroxide Compositesmentioning

confidence: 99%

Recent Advance in Co3O4 and Co3O4-Containing Electrode Materials for High-Performance Supercapacitors

Wang

Meng

et al. 2020

Molecules

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“…The in situ soft carbon growth behavior can not only produce high specific surface area and hierarchical pores, but also lead to higher structural stability, which are in favor of rapid electron/ion transport and good structural strain capacity. [31,32] Herein, we report a ZIF-67/PVA derived hard carbon-soft carbon (denoted as HC-SC) composite anode for sodium storage. As a typical demonstration, HC-SC composites were obtained via a facile route: the synthesis of a colloidal mixture of PVA and prefabricated ZIF-67, followed by carbonization.…”

Section: Introductionmentioning

confidence: 99%

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

Xue

Gao

et al. 2020

ChemElectroChem

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Hard carbon anodes are the most promising candidates for sodium-ion batteries due to lower sodium-embedded platform and higher specific capacity. However, pure hard carbon carbons usually show very low initial coulombic efficiency, low electronic conductance, et al. Herein, hard carbon-soft carbon (HC-SC) composites composed of carbon nanotubes (CNTs) blooming on porous hard carbon, which were synthesized through thermal decomposition of zeolitic imidazolate framework-67 (ZIF-67) and polyvinyl alcohol (PVA) composite. This unique structure could greatly promote the sodium-ion diffusion and electron transport due to the increased electrode/ electrolyte contact area and enlarged pores. As expected, the HC-SC delivers a high capacity (306.8 mAh g À 1 at 500 mA g À 1), impressive cycling stability (256.8 mAh g À 1 after 1000 cycles) and enhanced rate performance (144.9 mAh g À 1 at 20 C), which are far superior to those of both individual hard carbon and soft carbon. This encouraging performance may benefit from the synergistic effect of the modified defect concentration and interlayer distance in hard carbon by soft carbon, as well as the unique hierarchical structure. This work provides an exemplary strategy to develop optimized carbon materials for sodium-ion batteries.

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“…[4] Because the former generates a capacitance by reversible redox reaction on and around the surface of the pseudocapacitive active material, and the latter is generated by electrostatic charge storage on the surface of the electrode. [5] So far, there have been many researches on improving the performance of pseudocapacitive materials, [6] such as transition metal hydroxides/oxides, sulfides [7] and conductive polymers. [8] In recent years, two-dimensional (2D) materials are popular in supercapacitors because they provide more exposed surface area and high chemical activity, which contributes a lot to the specific capacitance.…”

Section: Introductionmentioning

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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Co, Mn-LDH nanoneedle arrays grown on Ni foam for high performance supercapacitors

Cited by 187 publications

References 48 publications

Recent Advance in Co3O4 and Co3O4-Containing Electrode Materials for High-Performance Supercapacitors

Recent Advance in Co3O4 and Co3O4-Containing Electrode Materials for High-Performance Supercapacitors

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

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

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