All-solid-state planner micro-supercapacitor based on graphene/NiOOH/Ni(OH)2 via mask-free patterning strategy

Feng, Xinliang; Ning, Jing; Wang, Dong; Zhang, Jincheng; Dong, Jianguo; Zhang, Chi; Shen, Xue; Hao, Yue

doi:10.1016/j.jpowsour.2019.01.093

Cited by 63 publications

(30 citation statements)

References 35 publications

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“…To betterr epresent the relationship between the energy and power densities in the energy storagep rocess, Figure 6f shows the Ragonep rofile of 3D-Ni/Ni-Mn-O//AC. This device reachesamaximum energy density of 6.6 mW hcm À3 at a power density of 40.8 mW cm À3 ,w hichi ss uperior to many peer studies on quasi-solid-state asymmetric supercapacitor devices, [53][54][55][56][57][58][59][60][61][62] indicating the excellent energy storage performances of the 3D-Ni/Ni-Mn-O electrode with the hierarchical structure. As shown in the illustration (Figure 6g), the supercapacitorh as ac ertainf lexibility,c an be bent to 1808,a nd recover as ever.T he CV curvesm easureda td ifferent conditions at 50 mV s À1 remain nearly identical,s uggesting the robustness and flexibility of the assembled supercapacitor.…”

Section: Resultsmentioning

confidence: 84%

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

Yang³

et al. 2019

Chemistry A European J

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To endow all‐solid‐state asymmetric supercapacitors with high energy density, cycling stability, and flexibility, we design a binder‐free supercapacitor electrode by in situ growth of well‐distributed broccoli‐like Ni0.75Mn0.25O/C solid solution arrays on a flexible and three‐dimensional Ni current collector (3D‐Ni). The electrode consists of a bottom layer of compressed but still porous Ni foam with excellent flexibility and high electrical conductivity, an intermediate layer of interconnected Ni nanoparticles providing a large specific surface area for loading of active substances, and a top layer of vertically aligned mesoporous nanosheets of a Ni0.75Mn0.25O/C solid solution. The resultant 3D‐Ni/Ni0.75Mn0.25O/C cathode exhibits a specific capacitance of 1657.6 mF cm−2 at 1 mA cm−2 and shows no degradation of the capacitance after 10 000 cycles at 3 mA cm−2. The assembled 3D‐Ni/Ni0.75Mn0.25O/C//activated carbon asymmetric supercapacitor has a high specific capacitance of 797.7 mF cm−2 at 2 mA cm−2 and an excellent cycling stability with 85.3 % of capacitance retention after 10 000 cycles at a current density of 3 mA cm−2. The energy density and power density of the asymmetric supercapacitor are up to 6.6 mW h cm−3 and 40.8 mW cm−3, respectively, indicating a fairly promising future of the flexible 3D‐Ni/Ni0.75Mn0.25O/C electrode for efficient energy storage applications.

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Section: Resultsmentioning

confidence: 84%

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

Yang³

et al. 2019

Chemistry A European J

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“…Even at 112 mW cm −3 , it displays an energy density of 1.6 mW h cm −3 . This performance is apparently superior to the reported ASCs such as graphene/NiOOH/Ni(OH) 2 (1.5 mW h cm −3 at 54 mW cm −3 ), mesoporous NiCo 2 O 4 nanoneedle arrays (0.33 mW h cm −3 at 12 mW cm −3 ), 3D NiCo 2 O 4 /Ni fibers (0.21 mW h cm −3 at 2.1 mW cm −3 ), 3D MnO 2 /multilayer graphene/Ni foam (0.634 mW h cm −3 at 126 mW cm −3 ), and Co 3 O 4 /VACNTs//Fe 3 O 4 /VACNTs (1.65 mW h cm −3 at 50 mW cm −3 ) . In addition, for the sake of visually validating the potential applications of the constructed device, we connected two ASCs in series, which can light up a red LED (inset in Figure ).…”

Section: Resultsmentioning

confidence: 69%

NiCo₂O₄/C Core‐Shell Nanoneedles on Ni Foam for All‐Solid‐State Asymmetric Supercapacitors

Wang

Shao

et al. 2020

ChemistrySelect

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Herein, NiCo 2 O 4 /C core-shell nanoneedles grown on Ni foam are prepared by a simple route and applied in supercapacitors. Electrochemical results show that the area specific capacitance of NiCo 2 O 4 /C reaches 2057 mF/cm 2 at 1 mA/cm 2 , which is about 4 times than that of the pristine NiCo 2 O 4 . The electrode exhibits excellent rate capability (92 % of capacitance retention at 10 mA/cm 2 ) and remarkable cycling stability (81 % of capacitance retention after 10000 cycles). The as-fabricated all-solid-state asymmetric supercapacitor (NiCo 2 O 4 /C//AC(active carbon)) achieves an energy density of 2 mW h cm À 3 at a power density of 37 mW cm À 3 and remains 1.6 mW h cm À 3 at a power density of 120 mW cm À 3 . Moreover, the ASC device can retain 87 % capacitance after 4000 cycles. The result reveals that it is a feasible method to achieve excellent performance in energy storage devices by the dipping method.

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“…Generally, these peaks correspond to the reversible reaction of Co 3+ /Co 2+ associated with the anions OH À . 1,18,19,[28][29][30][31] Based on these ndings, the reaction mechanism of CoV 2 O 6 can be presented by following equations:…”

Section: Resultsmentioning

confidence: 99%

A facile method to synthesize CoV₂O₆ as a high-performance supercapacitor cathode

Jiang

Tian

et al. 2019

RSC Adv.

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All-solid-state planner micro-supercapacitor based on graphene/NiOOH/Ni(OH)2 via mask-free patterning strategy

Cited by 63 publications

References 35 publications

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

NiCo₂O₄/C Core‐Shell Nanoneedles on Ni Foam for All‐Solid‐State Asymmetric Supercapacitors

A facile method to synthesize CoV₂O₆ as a high-performance supercapacitor cathode

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All-solid-state planner micro-supercapacitor based on graphene/NiOOH/Ni(OH)2 via mask-free patterning strategy

Cited by 63 publications

References 35 publications

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

NiCo2O4/C Core‐Shell Nanoneedles on Ni Foam for All‐Solid‐State Asymmetric Supercapacitors

A facile method to synthesize CoV2O6 as a high-performance supercapacitor cathode

Contact Info

Product

Resources

About

NiCo₂O₄/C Core‐Shell Nanoneedles on Ni Foam for All‐Solid‐State Asymmetric Supercapacitors

A facile method to synthesize CoV₂O₆ as a high-performance supercapacitor cathode