Construction of hierarchical structure of Co3O4 electrode based on electrospinning technique for supercapacitor

Lü, Yuan; Liu, Yangbiao; Mo, Jiamei; Deng, Binglu; Wang, Jixi; Zhu, Yanqing; Xiao, Xiudi; Xu, Gang

doi:10.1016/j.jallcom.2020.157271

Cited by 63 publications

(17 citation statements)

References 42 publications

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“…N 2 adsorption–desorption experiments are conducted to investigate the porosity of CoFe/NCS-650 and NCS-650. As shown in Figure a, N 2 sorption isotherms of samples can be identified as type-IV isotherms, in which the pronounced hysteresis loop is the typical characteristic of mesoporous materials . According to the results, the BET specific surface areas of CoFe/NCS-650 and NCS-650 are 193 and 427 m 2 g –1 , respectively.…”

Section: Resultsmentioning

confidence: 85%

“…As shown in Figure 3a, N 2 sorption isotherms of samples can be identified as type-IV isotherms, in which the pronounced hysteresis loop is the typical characteristic of mesoporous materials. 37 According to the results, the BET specific surface areas of CoFe/NCS-650 and NCS-650 are 193 and 427 m 2 g −1 , respectively. Moreover, NCS-650 has the higher total porous volume (0.335 cm 3 g −1 ) than CoFe/NCS-650 (0.179 cm 3 g −1 ).…”

Section: Methodsmentioning

confidence: 90%

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Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Cong

et al. 2021

ACS Appl. Energy Mater.

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Current, there is an urgent demand for electrode materials with superior electrochemical performances for the development of supercapacitors. A nitrogen-doped carbon skeleton (NCS) assembled by carbon nanotubes and graphene layers is designed and synthesized utilizing a layer-shaped humate-based zeolitic imidazolate framework (ZIF) (HA-CoFe-ZIF) as a template in this work. The synthesized NCS is mainly composed of graphitized carbon with a few hydroxyl groups on its surface, synchronously doped by 9.5 at % nitrogen in the state of pyridinic N and pyrrolic N. The rich mesoporous structure entitles it to a high Brunauer–Emmett–Teller (BET) specific surface area of 427 m2 g–1 and suitable BET average pore diameter of 3.14 nm. The NCS has a high capacity of 324 F g–1 at 1 A g–1, good rate capability (capacitance retention of 71% from 5 to 100 A g–1), and excellent cycling stability (capacitance retention of 96 and 87% after 5000 and 10 000 cycles, respectively). The fabricated NCS//AC asymmetric supercapacitor also exhibits a high capacity of 93 F g–1 at 1 A g–1, large energy density of 10.3 Wh kg–1 at 331 W kg–1, and good cycling performance (capacitance retention of 88% after 5000 cycles). Our elaborately designed NCS materials exhibit multiple structural advantages including rich mesoporous structure, various graphitic carbon, and high-dosage nitrogen doping, resulting in high capacitance performances. This humate-based metal–organic framework (MOF)-derived strategy provides a good idea for the synthesis of high-performance carbon skeleton materials applied to energy storage.

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Section: Resultsmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 90%

Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Cong

et al. 2021

ACS Appl. Energy Mater.

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“…Compared with the strong peak intensity of Ni, weak peaks at 19.31°, 31.26°, 36.85°, 38.38°, 44.64°, 55.27°, 59.34°, and 65.17°, which were assigned to the (111), (220), (311), (222), (400), (422), (511), and (440) lattice planes of Co 3 O 4 (JCPDS No. 42-1467), respectively (Figure ), could be detected for the Co 3 O 4 - x /Ni binder-free electrode. , The main reason for the weak intensity could be attributed to the limited amount of Co 3 O 4 and the strong background of Ni foam. Almost no impurity peaks could be found with increasing hydrothermal time, indicating the reaction time did not obviously affect the crystallization behavior of Co 3 O 4 .…”

Section: Resultsmentioning

confidence: 91%

Facile Synthesis of Schlumbergera Bridgesii-Like Nanostructured Co₃O₄@MnO₂ as High Performance Electrode Materials for Supercapacitors

Wang

Zhang

2022

Ind. Eng. Chem. Res.

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Tailored nanoarchitecture design is of great significance for the performance of supercapacitors, especially for heterostructure composites. Herein, we report a facile two-step hydrothermal strategy to prepare Co 3 O 4 @MnO 2 nanocomposites, where the well-aligned Co 3 O 4 nanograss array is capable of loading numerous and uniformly vertical MnO 2 nanosheets that present an open structure of a nanoflower pattern. The microstructure of the nanograsses and nanoflower can be regulated by adjusting the hydrothermal process. The optimized Co 3 O 4 @MnO 2 displays a Schlumbergera bridgesii-like nanostructure with a maximum specific capacitance of 5038.19 F g −1 as well as excellent capacity retention of as high as 97.48% after undergoing 5000 cycles at 10 A g −1 . The assembled symmetric supercapacitor also exhibits a high energy density of 1467.23 Wh kg −1 and a maximum power density of 5500.07 W kg −1 . This work provides a tunable strategy for the fabrication of heterostructure nanostructured composite for supercapacitor.

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“…MOF‐derived metal oxides can be further integrated with other functional materials, including CC, GE, GO, CNFs, CNTs, NF, and metal oxides, to provide a favorable architecture and achieve a synergistic effect between different components. [ 28,31,107 ] Interestingly, CoFe 2 O 4 nanorods (derived from a Co–Fe MOF)/MXene nanosheets have been prepared as supercapacitor electrodes. The MXene layer not only acts as a binder and conductive additive, but also contributes to the excellent flexibility, promoting charge transfer and ion transport in this composite.…”

Section: Supercapacitor Applicationsmentioning

confidence: 99%

Metal–Organic Frameworks and Their Derived Functional Materials for Supercapacitor Electrode Application

Tian

2021

Adv Energy and Sustain Res

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Metal-organic frameworks (MOFs) are deemed an attractive type of active material during electrochemical reaction processes because of their unique compositional and structural superiority, as well as the dual role as both templates and precursors to derive a large variety of functional materials for energy conversation and storage. Herein, reviewing the recent advances of MOFs and their derived functional materials as electrode materials in supercapacitors, which are classified into pristine MOFs, MOF composites, and MOF-derived functional materials, is focused on. Their synthetic routes and modification strategies are summarized and the relationship between the diversity of the architectures and compositions of MOF-based materials and their electrochemical performance is discussed. In addition, the challenges and opportunities on future research and extensive applications of MOFs and their derived functional materials are offered.

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Construction of hierarchical structure of Co3O4 electrode based on electrospinning technique for supercapacitor

Cited by 63 publications

References 42 publications

Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Facile Synthesis of Schlumbergera Bridgesii-Like Nanostructured Co₃O₄@MnO₂ as High Performance Electrode Materials for Supercapacitors

Metal–Organic Frameworks and Their Derived Functional Materials for Supercapacitor Electrode Application

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Construction of hierarchical structure of Co3O4 electrode based on electrospinning technique for supercapacitor

Cited by 63 publications

References 42 publications

Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Design and Synthesis of N-Doped Carbon Skeleton Assembled by Carbon Nanotubes and Graphene as a High-Performance Electrode Material for Supercapacitors

Facile Synthesis of Schlumbergera Bridgesii-Like Nanostructured Co3O4@MnO2 as High Performance Electrode Materials for Supercapacitors

Metal–Organic Frameworks and Their Derived Functional Materials for Supercapacitor Electrode Application

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Facile Synthesis of Schlumbergera Bridgesii-Like Nanostructured Co₃O₄@MnO₂ as High Performance Electrode Materials for Supercapacitors