Mesostructured NiO/Ni composites for high-performance electrochemical energy storage

Lai, Hongwei; Wu, Qiang; Zhao, Jianwei; Shang, Longmei; Li, He; Che, Renchao; Lyu, Zhiyang; Xiong, Jingfang; Yang, Lijun; Wang, Xizhang; Hu, Zheng

doi:10.1039/c6ee00603e

Cited by 213 publications

(114 citation statements)

References 46 publications

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“…1 Nickel based materials have been identied as promising electrode materials for electrochemical energy storage devices because of their high theoretical specic capacitance ($2584 F g À1 for NiO and 2082 F g À1 for Ni(OH) 2 ), environmental friendliness and low cost. 2,3 With the aim to provide a larger reaction area and shorten ion diffusion paths, many fabrication methods including chemical precipitation, 4,5 hydrothermal synthesis, [6][7][8][9][10][11] sol-gel, 12,13 thermal oxidation [14][15][16] and anodization 17,18 have been used to produce various kinds of nickel-based nanostructures, such as amorphous Ni(OH) 2 nanoboxes, 5 Ni-Co oxide nanowires, 6,19 Ni(OH) 2 nanosheets, 7,11 NiO nanobelts, 8 nanosized rambutan-like NiO, 9 urchin-like NiCo 2 O 4 , 10 spinel nickel cobaltite aerogels, 12 NiO nanoowers, 13 NiO nanoblocks 14 and sponge-like Ni(OH) 2 -NiF 2 composites. 18 Apart from the above methods, electrodeposition has gained more and more attention because the electroactive material can be directly grown on a current collector without the need for using any binder or conducting agent.…”

Section: Introductionmentioning

confidence: 99%

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

Liu

Zhang

et al. 2016

J. Mater. Chem. A

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A dendritic Ni@NiO core/shell electrode (DNE) is successfully fabricated by electrodeposition in a Ni-free electrolyte, with a Ni anode providing Ni ions through dissolution and diffusion. The unique structure is ideal for electrochemical energy storage since the dendrites provide a large surface area for easy electrolyte infiltration; the metal core improves the electrode conductivity with a shortened ion diffusion path, and the metal oxide shell is active for faradaic charge storage. As a result, the synthesized DNE demonstrates a high specific capacitance of 1930 F g À1 and a high areal capacitance of 1.35 F cm À2 , with super-long cycle stability. The gravimetric capacitance of the DNE hardly shows any decay after 70 000 cycles at a scan rate of 100 mV s À1 . It was also demonstrated that our electrodeposition method in a source-free electrolyte is universal to deposit dendritic Ni-compounds on many other types of substrates, versatile for different applications.

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Section: Introductionmentioning

confidence: 99%

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

Liu

Zhang

et al. 2016

J. Mater. Chem. A

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“…Fig. 4a shows the CV curves of the NiO architecture at different scan rates in the range of 0.1-0.55 V. The distinct redox peaks reveal that the capacitive response of the NiO architecture results from pseudocapacitance based on the surface oxidation/reduction reactions of Ni 2+ and Ni 3+ , [3,13].…”

Section: Resultsmentioning

confidence: 98%

MOF-derived porous NiO nanoparticle architecture for high performance supercapacitors

et al. 2017

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“…The specific capacitance (C s ), area capacitance (C A ) of the electrodes can be calculated according to the following equations [Eqs. (6) and ]:

true C_{s} = \frac{boldI Δ boldt}{boldm Δ boldV}

true C_{A} = \frac{boldI Δ boldt}{boldS Δ boldV}

…”

Section: Methodsmentioning

confidence: 99%

“…The energy density (E) and power density (P) in a constant current charging/discharging process are calculated by equations [Eqs. (8) and ]:

true boldE = \int_{0}^{t} \frac{boldV boldI}{3600 boldm} d boldt

true boldP = \frac{3600}{t} \int_{0}^{t} \frac{boldV boldI}{m} d boldt

…”

Section: Methodsmentioning

confidence: 99%

Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

et al. 2019

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Electrode materials with special microstructures derived from metal‐organic frameworks (MOFs) exhibited high performance in electrochemical energy storage devices. In this manuscript, using freshly prepared Co−MOF nanosheet arrays as the self‐sacrificed template, MCo2O4 (M=Mn and Zn) nanosheet arrays were successfully grown on carbon cloth (CC) by using a facile solution method. As‐prepared MnCo2O4@CC and ZnCo2O4@CC were used as the integrated electrodes for supercapacitors and Li‐ion batteries. Studies found that both integrated electrodes delivered high capacity and a long cycling life of 20 000 cycles with the capacity retention of 95.5 % for MnCo2O4@CC and 94.7 % for ZnCo2O4@CC at the current density of 50 mA cm−2, respectively. Assembled into asymmetric supercapacitors with carbon nanosheet arrays@CC (CNS@CC), the obtained maximum energy densities were measured to be 25.6 Wh kg−1 at the power density of 3.4 kW kg−1 for MnCo2O4@CC//CNS@CC based device and 22.7 Wh kg−1 at the power density of 4.1 kW kg−1 for ZnCo2O4@CC//CNS@CC based device, respectively. In addition, both integrated electrodes also showed good lithium storage performance, delivering high capacities of 1289 mA h/g (MnCo2O4@CC) and 1376 mA h/g (ZnCo2O4@CC) even after 200 cycles at the current density of 1 A g−1, respectively. The outstanding performances suggest the potential of both nanosheet arrays integrated electrodes for extensive applications in energy storage devices.

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Mesostructured NiO/Ni composites for high-performance electrochemical energy storage

Abstract: The mesostructured NiO/Ni composites boost the electrochemical energy storage performance of NiO to its theoretical limit, which results from the synergism of high accessibility to electrolyte, short solid-state ion diffusion length and high conductivity owing to the unique mesostructure.

Cited by 213 publications

References 46 publications

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

MOF-derived porous NiO nanoparticle architecture for high performance supercapacitors

Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

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Mesostructured NiO/Ni composites for high-performance electrochemical energy storage

Abstract: The mesostructured NiO/Ni composites boost the electrochemical energy storage performance of NiO to its theoretical limit, which results from the synergism of high accessibility to electrolyte, short solid-state ion diffusion length and high conductivity owing to the unique mesostructure.

Cited by 213 publications

References 46 publications

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage

MOF-derived porous NiO nanoparticle architecture for high performance supercapacitors

Metal‐Organic‐Framework‐Derived MCo2O4 (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

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Product

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Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications