Sub‐Micrometer‐Thick All‐Solid‐State Supercapacitors with High Power and Energy Densities

Meng, Fanhui; Ding, Yi

doi:10.1002/adma.201101678

Cited by 349 publications

(257 citation statements)

References 30 publications

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“…S6). The performance of the biscrolled yarn supercapacitor was also higher than for conducting polymer and carbon-ink-based solid-electrolyte supercapacitors 6,15,28 . As recent high-performance supercapacitors are made of nanometre-thick active materials on much larger volume substrates, normalization based on electrode geometrical area is here used to provide fair performance comparisons.…”

Section: Resultsmentioning

confidence: 97%

“…As recent high-performance supercapacitors are made of nanometre-thick active materials on much larger volume substrates, normalization based on electrode geometrical area is here used to provide fair performance comparisons. Meng and Ding 28 reported that polypyrrole-decorated nanoporous gold membrane supercapacitors with a thickness of B100 nm (HClO 4 /PVA gel electrolyte) had an areal capacitance of 1.8 mF cm À 2 at 0.1 V s À 1 . Wang et al 6 showed that polyaniline nanowire micro-supercapacitors with a thickness of B400 nm (H 2 SO 4 /PVA gel electrolyte) had a capacitance of 23.5 mF cm À 2 at 0.1 mA cm À 2 .…”

Section: Resultsmentioning

confidence: 99%

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Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices

et al. 2013

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Flexible, wearable, implantable and easily reconfigurable supercapacitors delivering high energy and power densities are needed for electronic devices. Here we demonstrate weavable, sewable, knottable and braidable yarns that function as high performance electrodes of redox supercapacitors. A novel technology, gradient biscrolling, provides fastion-transport yarn in which hundreds of layers of conducting-polymer-infiltrated carbon nanotube sheet are scrolled into B20 mm diameter yarn. Plying the biscrolled yarn with a metal wire current collector increases power generation capabilities. The volumetric capacitance is high (up to B179 F cm À 3 ) and the discharge current of the plied yarn supercapacitor linearly increases with voltage scan rate up to B80 Vs À 1 and B20 Vs À 1 for liquid and solid electrolytes, respectively. The exceptionally high energy and power densities for the complete supercapacitor, and high cycle life that little depends on winding or sewing (92%, 99% after 10,000 cycles, respectively) are important for the applications in electronic textiles.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices

et al. 2013

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“…They can be used as a highly conductive substrate for deposition of metal oxide or conducting polymers ( Figure 15 ). 262, 263 Alternatively, they can also be transformed into metal oxide, metal nitride, metal carbide or metal fluoride and are directly employed as electrodes for flexible energy storage systems 264. The multifunctional properties of nanoporous metal papers make them particularly attractive for carbon‐free electrodes.…”

Section: Paper‐like Electrodesmentioning

confidence: 99%

Paper‐Based Electrodes for Flexible Energy Storage Devices

et al. 2017

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Paper‐based materials are emerging as a new category of advanced electrodes for flexible energy storage devices, including supercapacitors, Li‐ion batteries, Li‐S batteries, Li‐oxygen batteries. This review summarizes recent advances in the synthesis of paper‐based electrodes, including paper‐supported electrodes and paper‐like electrodes. Their structural features, electrochemical performances and implementation as electrodes for flexible energy storage devices including supercapacitors and batteries are highlighted and compared. Finally, we also discuss the challenges and opportunity of paper‐based electrodes and energy storage devices.

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“…Dealloying, which is a phenomenon of corrosion where the less noble metal is selectively removed from an alloy, has recently gained interest for tailoring nanoporous metallic materials [1][2][3][4]. Nowadays, Chen et al [5] found that, instead of formation of nanoporous copper, cuprous oxide (Cu 2 O) nanocubes and nanograins can be formed on the ribbon surfaces when electrochemically dealloying a Cu 30 Mn 70 alloy in hydrochloric acid (HCl) solutions.…”

Section: Introductionmentioning

confidence: 99%

Tunable Nanocrystals Fabricated by Free Dealloying of Amorphous Ribbons

Wang

Qin

Zhao

et al. 2012

Journal of Nanomaterials

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This work discovers that Cu 2 O nanocrystals with controllable structures can be synthesized on surfaces of nanoporous Cu and amorphous ribbons by free dealloying of Cu-based amorphous alloys in acidic solutions. Technological parameters, such as the acid, acid concentration, and dealloying time strongly influence the crystal size, structure and morphology of Cu 2 O. Cu 2 O nanocubes are fabricated on surfaces of nanoporous Cu in the hydrofluoric acid treated alloy, while various Cu 2 O particles are tailored on surfaces of amorphous alloys immersed in hydrochloric acid for different time. The increasing dealloying time and adsorbed oxygen improve the growth rates along the 1 0 0 direction of Cu 2 O crystals relative to that of the 1 1 1 direction, which is the key to change the shapes of Cu 2 O crystals. The understanding of morphology evolution of Cu 2 O nanocrystals in this work is helpful in tailoring Cu 2 O particles with designable shapes and controllable properties in application fields.

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Sub‐Micrometer‐Thick All‐Solid‐State Supercapacitors with High Power and Energy Densities

Cited by 349 publications

References 30 publications

Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices

Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices

Paper‐Based Electrodes for Flexible Energy Storage Devices

Tunable Nanocrystals Fabricated by Free Dealloying of Amorphous Ribbons

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