Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors

Design and fabrication of electrochemical energy storage systems with both high energy and power densities as well as long cycling life is of great importance. As one of these systems, Battery‐supercapacitor hybrid device (BSH) is typically constructed with a high‐capacity battery‐type electrode and a high‐rate capacitive electrode, which has attracted enormous attention due to its potential applications in future electric vehicles, smart electric grids, and even miniaturized electronic/optoelectronic devices, etc. With proper design, BSH will provide unique advantages such as high performance, cheapness, safety, and environmental friendliness. This review first addresses the fundamental scientific principle, structure, and possible classification of BSHs, and then reviews the recent advances on various existing and emerging BSHs such as Li‐/Na‐ion BSHs, acidic/alkaline BSHs, BSH with redox electrolytes, and BSH with pseudocapacitive electrode, with the focus on materials and electrochemical performances. Furthermore, recent progresses in BSH devices with specific functionalities of flexibility and transparency, etc. will be highlighted. Finally, the future developing trends and directions as well as the challenges will also be discussed; especially, two conceptual BSHs with aqueous high voltage window and integrated 3D electrode/electrolyte architecture will be proposed.

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Section: Recent Advances On Materials and Performance Of Bshsmentioning

confidence: 99%

Battery‐Supercapacitor Hybrid Devices: Recent Progress and Future Prospects

et al. 2017

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“…[1] The nickel/iron battery,a lso known as the Edison battery,i s am ember of the safe and cost-efficient nickel-based aqueous alkaline batteries family.A lthough the nickel/iron system was invented over 100 years ago, [2] it has come into its second spring with the development of nanotechnology.D elicate syntheses of nanostructured nickel oxide, iron oxide,a nd metal oxide-carbon composites have been widely reported. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] In these studies, high capacitance and excellent cycling stability of Ni/Feb atteries can be achieved, basically owing to the enhanced conductivity of carbonc omposites and nanostructured metal oxide electrodes. However,w ith conventional nano synthesis, nearly all these works require ah igh-temperature process, which yields powder products.…”

Section: Introductionmentioning

confidence: 99%

Metal Oxide Nanostructures Generated from In Situ Sacrifice of Zinc in Bimetallic Textures as Flexible Ni/Fe Fast Battery Electrodes

Huang

Liu

Zhang

et al. 2017

Chemistry An Asian Journal

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An "in situ sacrifice" process was devised in this work as a room-temperature, all-solution processed electrochemical method to synthesize nanostructured NiO and FeO directly on current collectors. After electrodepositing NiZn/FeZn bimetallic textures on a copper net, the zinc component is etched and the remnant nickel/iron are evolved into NiO and FeO by the "in situ sacrifice" activation we propose. As-prepared electrodes exhibit high areal capacities of 0.47 mA h cm and 0.32 mA h cm , respectively. By integrating NiO as the cathode, FeO as the anode, and poly(vinyl alcohol) (PVA)-KOH gel as the separator/solid-state electrolyte, the assembled quasi-solid-state flexible battery delivers a volumetric capacity of 6.91 mA h cm at 5 mA cm , along with a maximum energy density of 7.40 mWh cm under a power density of 0.27 W cm and a maximum tested power density of 3.13 W cm with a 2.17 mW h cm energy density retention. Our room-temperature synthesis, which only consumes minute electricity, makes it a promising approach for large-scale production. We also emphasize the in situ sacrifice zinc etching process used in this work as a general strategy for metal-based nanostructure growth for high-performance battery materials.

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“…However, the obtainable specific capacity is still limited, and the related performance of SCs is far from expectation. Because of the high theoretical capacity of transition metal compounds, some novel composite structures of TMDs have been widely reported as electrode materials for SCs, such as NCs@MoS 2 /MoO (569 F g −1 at 1 A g −1 ), CoS 2 @MoS 2 ‐NG (198 F g −1 at A g −1 ), and MoS 2 /Ni 3 S 4 (502.4 F g −1 at 2 A −1 ) . Unfortunately, the performance of these composite structures is not optimistic.…”

Section: Introductionmentioning

confidence: 99%

3D Mesoporous Ni(OH)₂/WS₂ Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors

Jiang

Dai

et al. 2019

Energy Tech

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3D Ni(OH)2/tungsten disulfide (WS2) nanofibers composed of ultrathin nanoflakes are synthesized by electrospinning followed by a hydrothermal process, which have a large specific surface of 64.56 m2 g−1. When tested in a three‐electrode configuration, the WS2/Ni(OH)2 nanofiber‐based electrode exhibits a high specific capacity of 354 C g−1 at a current density of 1 A g−1. The hybrid storage device, in which WS2/Ni(OH)2 nanofibers and graphene are used as the positive and negative electrodes, respectively, exhibits a high energy density of 34 Wh kg−1 at a power density of 940 W kg−1 and a high capacity retention of 83% after 4000 cycles at 4 A g−1. The as‐synthesized 3D Ni(OH)2/WS2 nanofibers provide a way for the WS2 nanostructure to optimize its viability and potential in constructing a high‐performance energy storage device.

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Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors

Abstract: An integrated (Cu,Ni)O mesoporous nanowire array that delivers a high specific capacitance has been used to construct high-performance aqueous asymmetric supercapacitors of (Cu,Ni)O(+)//AC(−).

Cited by 97 publications

References 66 publications

Battery‐Supercapacitor Hybrid Devices: Recent Progress and Future Prospects

Battery‐Supercapacitor Hybrid Devices: Recent Progress and Future Prospects

Metal Oxide Nanostructures Generated from In Situ Sacrifice of Zinc in Bimetallic Textures as Flexible Ni/Fe Fast Battery Electrodes

3D Mesoporous Ni(OH)₂/WS₂ Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors

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Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors

Abstract: An integrated (Cu,Ni)O mesoporous nanowire array that delivers a high specific capacitance has been used to construct high-performance aqueous asymmetric supercapacitors of (Cu,Ni)O(+)//AC(−).

Cited by 97 publications

References 66 publications

Battery‐Supercapacitor Hybrid Devices: Recent Progress and Future Prospects

Battery‐Supercapacitor Hybrid Devices: Recent Progress and Future Prospects

Metal Oxide Nanostructures Generated from In Situ Sacrifice of Zinc in Bimetallic Textures as Flexible Ni/Fe Fast Battery Electrodes

3D Mesoporous Ni(OH)2/WS2 Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors

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3D Mesoporous Ni(OH)₂/WS₂ Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors