Hierarchical mesoporous flower-like ZnCo2O4@NiO nanoflakes grown on nickel foam as high-performance electrodes for supercapacitors

Yi, Ting‐Feng; Li, Yanmei; Wu, Jin-Zhu; Xie, Ying; Luo, Shaohua

doi:10.1016/j.electacta.2018.07.156

Cited by 47 publications

(19 citation statements)

References 63 publications

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Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

“…ZnCo 2 O 4 also has excellent electrical conductivity, wonderful electrochemical activity, and acceptable theoretical capacitance of 2604 F g −1 , so that it has attracted much attention as a pseudocapacitive material. The porous ZnCo 2 O 4 @NiO nanoflowers supported on nickel foam were synthesized by a facile hydrothermal process combined with a chemical bath deposition process 48a. As shown in Figure 6k–m, after the deposition of NiO nanoflakes, the ZnCo 2 O 4 microspheres turned into mesoporous ZnCo 2 O 4 @NiO nanoflowers, which can improve the surface area and establish fast transmission channels for ions and electrons.…”

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

“…Therefore, the CeO 2 ‐modified MOs usually show high specific capacitance and outstanding cycling stability even at high current density. Our group48b reported a hydrothermal synthesis of spherical flowerlike NiO@CeO 2 composites (Figure 6n), where the results showed that NiO@CeO 2 (5.0 wt%) had excellent electrochemical performance with a high specific capacitance of 960.4 F g −1 , even at a current density of 20 A g −1 , and excellent capacitance retention of 95.84% after 10 000 cycles. This excellent performance is from the formation of covalent bonds at the interfaces between NiO and CeO 2 .…”

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

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Approaching High‐Performance Supercapacitors via Enhancing Pseudocapacitive Nickel Oxide‐Based Materials

Wei

Mei

et al. 2020

Advanced Sustainable Systems

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Nickel oxide, as a typical pseudocapacitive material, holds great promise for boosting the energy storage capability of supercapacitors (SCs) owing to its great advantages, such as high theoretical capacitance value, low‐cost, good stability, and environmentally benign nature. Nevertheless, many obstacles, including low intrinsic conductivity and limited surfice electrochemically active sites, need to be overcome before its practical implementation. In this review, the recent advances on nickel oxide‐based electrode materials are outlined with particular attention paid to strategies for enhancing their SC performance. To begin, an introduction to the physical and chemical properties of nickel oxide and its charge storage mechanisms is presented, followed by a discussion of the obstacles to its widespread implementation and the corresponding strategies for constructing high‐performance nickel oxide‐based electrode materials. After that, recent progress in the use of organic electrolyte systems to achieve improvements in integrated device performance is highlighted. To conclude, a detailed discussion on future trends and opportunities associated with NiO‐based electrode materials for future SCs is provided.

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Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

Section: Multicomponent Composition To Achieve Performance Improvemenmentioning

confidence: 99%

See 2 more Smart Citations

Approaching High‐Performance Supercapacitors via Enhancing Pseudocapacitive Nickel Oxide‐Based Materials

Wei

Mei

et al. 2020

Advanced Sustainable Systems

Self Cite

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“…Due to increasing energy and environmental demands, the utilization of energy storage devices have become a pressing essential need in both civil and military applications (Dunn et al, 2011 ; Etacheri et al, 2011 ; Chu and Majumdar, 2012 ; Li et al, in press ). As materials play a leading role in the research of energy storage devices, metal oxides are considered as promising materials for electrochemical energy storage and conversion devices, such as secondary rechargeable batteries(Chen et al, 2017 ; Cui et al, 2018 ; Yi et al, 2018 ; Zhao et al, 2018 ; Zheng et al, 2018 ), fuel cells and electrochemical capacitors (Jiang et al, 2012 ; Wang et al, 2012 , 2016 ; Wu et al, 2012 ; Nithya and Arul, 2016 ). Among various metal oxides, Fe 3 O 4 is extensively studied as an alternative electrode material for LIBs, with advantages of low cost, natural abundance, high electronic conductivity and high capacity (926 mAh·g −1 ; Huang et al, 2017 ; Liu et al, 2017 ; Wang et al, 2018 ; Yan et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

Yang

et al. 2018

Front. Chem.

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Metal oxides and carbonaceous composites are both promising materials for electrochemical energy conversion and storage devices, such as secondary rechargeable batteries, fuel cells and electrochemical capacitors. In this study, Fe3O4 nanoparticles wrapped in nitrogen-doped (N-doped) graphene nanosheets (Fe3O4@G) were fabricated by a facile one-step carbothermal reduction method derived from Fe2O3 and liquid-polyacrylonitrile (LPAN). The unique two-dimensional structure of N-doped graphene nanosheets, can not only accommodate the volume changes during lithium intercalation/extraction processes and suppress the particles aggregation but also act as an electronically conductive matrix to improve the electrochemical performance of Fe3O4 anode, especially the rate capability. What's more, by etching Fe3O4@G to remove the iron-based oxide template, porous N-doped graphene composites (NGCs) were prepared and presented abundant pore structure with high specific surface area, delivering a specific capacitance of 172 F·g−1 at 0.5 A·g−1. In this way, Fe2O3 was both template and activator to adjust the pore size of graphene. And the effect of specific surface area and pore size tuned by the Fe2O3 activator were also revealed.

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New Inorganic Nanomaterials for Supercapacitors

Çalımlı

Dasdemir

Khan

et al. 2021

Handbook of Supercapacitor Materials

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Hierarchical mesoporous flower-like ZnCo2O4@NiO nanoflakes grown on nickel foam as high-performance electrodes for supercapacitors

Cited by 47 publications

References 63 publications

Approaching High‐Performance Supercapacitors via Enhancing Pseudocapacitive Nickel Oxide‐Based Materials

Approaching High‐Performance Supercapacitors via Enhancing Pseudocapacitive Nickel Oxide‐Based Materials

Carbothermal Synthesis of Nitrogen-Doped Graphene Composites for Energy Conversion and Storage Devices

New Inorganic Nanomaterials for Supercapacitors

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