High-performance stacked in-plane supercapacitors and supercapacitor array fabricated by femtosecond laser 3D direct writing on polyimide sheets

Wang, Shutong; Yu, Yongchao; Li, Ruo‐Zhou; Feng, Guoying; Wu, Zili; Compagnini, Giuseppe; Gulino, Antonino; Zhao, Feng; Hu, Anming

doi:10.1016/j.electacta.2017.04.138

Cited by 98 publications

(61 citation statements)

References 57 publications

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“…We compared our PPy–GA‐0.1 m composites with a few reported noncompressible, thin‐film electrodes claiming ultrahigh areal and/or volumetric capacitance ( Table 2 ). Our electrodes achieves an ultrahigh areal capacitance of 2 F cm −2 at 6 A g −1 , which is among the best values of those reported, e.g., reduced graphene oxide/gold nanoparticle (rGO–Au) (7.7 × 10 −4 F cm −2 ), onion‐like carbon (OLC) (9 × 10 −4 F cm −2 ), laser‐induced porous graphene film (LIG) (>4 × 10 −3 F cm −2 ), polyimide (PI) (4.26 × 10 −2 F cm −2 ), reduced graphene oxide–carbon nanotube (rGO–CNT) (2.8 × 10 −3 F cm −2 ), polyaniline nanowire (PANI‐NW) (4.52 × 10 −2 F cm −2 ), and graphene‐based compact film (P x G y ) (0.196 F cm −2 ) . Our electrodes also show impressive volumetric capacitance of 10 F cm −3 due to high mass loading of around 27 mg cm −3 , which makes our electrodes comparable or even higher than those reported.…”

Section: Resultsmentioning

confidence: 59%

3D‐Printed, Superelastic Polypyrrole–Graphene Electrodes with Ultrahigh Areal Capacitance for Electrochemical Energy Storage

Zhang

Chen

et al. 2018

Adv Materials Technologies

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are expected to boost areal energy density by fully utilizing limited available footprints. However, because the ionic transport resistance increases with electrode thickness, [6] it is of critical importance to optimize the 3D electrode architecture to minimize ionic transport losses. [7] When going from 2D to 3D electrodes, their compressibility becomes a more important mechanical requirement specifically in the context of capacity retention. [8] To date, it is still a tremendous challenge to fabricate shape and architecture tunable 3D supercapacitors with enhanced mechanical and electrochemical properties.Graphene is a promising capacitive carbon material for energy storage applications due to its large surface area, high electrical conductivity, and chemical stability. [9] However, stacking between graphene sheets significantly affects their intrinsic properties owing to the limited ion-accessible surface, narrow channels, and contact resistances. [10] Currently, a few attempts have been made to create 3D carbon-based compressible devices. [11] For example, a selfassembly method has been used to generate an interdigitated device by successively coating graphene and separator thin films onto an inactive aerogel template. [12] Another kind of elastic graphene aerogel (GA) electrode has also been synthesized through hydrothermal reduction and freeze drying. [13] Nevertheless, the graphene networks from these methods remain largely random, precluding the ability to tailor mass/ion transport and mechanical durability. Most of these 3D electrodes must keep low mass loading to maintain their elasticity, which largely attenuates their performance metrics. For practical applications, superelastic 3D electrodes with increased mass loading, apparent density, and thickness without decreasing the electron and ion transport rates should be created to reconcile the conflicts between the compressibility and energy storage capability.Recently, 3D printing has been used to additively manufacture carbon-based materials for energy-related applications. [14] Previously, we have employed a 3D printing method, called direct-ink writing (DIW) [15] to fabricate 3D GA microlattices, which were assembled into supercapacitors with periodic macropores. [16] They displayed exceptional capacitive retention Disruptive custom electronics require a transformation in energy storage systems from traditional thin-film units to shape conformable 3D components. However, current thick electrodes suffer from uncontrollable geometries and architectures, which lead to ion diffusion limitations, and poor mechanical properties. Here, designed, superelastic polypyrrole (PPy)-coated graphene aerogel (GA) electrodes are fabricated via 3D printing and polymer self-assembly methods. This resilient GA template (up to 90% compression) can be printed into any desired shape including engineered 3D architectures with periodic macropores, which promote the uniform deposition and adhesion of PPy onto the support. The coated PPy thin film increases the specific gr...

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Section: Resultsmentioning

confidence: 59%

3D‐Printed, Superelastic Polypyrrole–Graphene Electrodes with Ultrahigh Areal Capacitance for Electrochemical Energy Storage

Zhang

Chen

et al. 2018

Adv Materials Technologies

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“…For example, the grating of CN moiety may not only vary the Femi energy level of carbon substrate, but may induce faradaic redox reactions with the electrolytes. [23][24][25] This difference should be attributed to relative high oxygen content in our carbon polyhedra networks. Compared to the initial PI sheets, the atomic concentration of carbon rises from 76 at % (calculated from the monomer unit of PI) to 83 at% after laser writing process.…”

Section: Resultsmentioning

confidence: 94%

Direct Semiconductor Laser Writing of Few‐Layer Graphene Polyhedra Networks for Flexible Solid‐State Supercapacitor

Liu

Liang

et al. 2018

Adv Elect Materials

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“…They changed the focus depth of the laser beam from inside to its surface to obtain multiphoton absorption and carbonization inside the PI sheet during different irradiations and formed multilayer stacked electrodes for high areal capacitance. The high performance was attributed to the hierarchical porous structures and the N‐doping during femtosecond pulse laser carbonization . This result proposed a promising method for thick electrode construction with laser carbonization, and future research should be concentrated on improving the spatial resolution and quality control of the fabricated feature.…”

Section: Fabrication Methodsmentioning

confidence: 89%

“…Owing to the rapid development of micro‐/nanostructured material and fabrication methods, nanotechnologies play great roles in enhancing MSC performance by improving access of ions to electrode, shortening ion diffusion path, and decreasing electrical resistance. Besides the widely used silicon substrate, MSCs can also be constructed on various materials such as textile, paper, polyimide (PI), polyethylene terephthalate (PET), and polydimethylsiloxane (PDMS) to make it flexible or stretchable for specific applications, usually called flexible MSCs . Moreover, for on‐chip MSCs, electrolytes are preferred to leakage‐free solid or gel type, fulfilling the requirements of fabrication and environment consideration.…”

Section: Introductionmentioning

confidence: 99%

On‐Chip Microsupercapacitors: From Material to Fabrication

Wang

Zhang

2019

Energy Tech

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Microsupercapacitors (MSCs) are integrated into microdevices or chip‐based systems to store energy and power the chip efficiently, as they present excellent performance capabilities including high power density, fast charge/discharge rate, and long cycle time. Providing sufficient surface area and high electric conductivity are effective ways to enhance ion diffusion and charge transportation in electrodes, which in turn leads to high performance behavior. Herein, the novel progress of on‐chip MSCs in the past few years ranging from active materials synthesis to high‐resolution fabrication techniques is summarized, and the strategies to enhance the performance of MSCs are focused upon. From conventional materials to nanocomposite hybrid structures, the main active materials for MSC electrodes and the related fabrication techniques are reviewed in detail according to their different electrochemical performance. It is concluded that hierarchical porous‐structured materials and high‐resolution fabrication processes are of great importance in constructing high‐performance devices, which also demonstrates the future developing direction of on‐chip energy devices. The new developments of fabrication technologies such as microfabrication, laser direct writing, and inkjet printing are also discussed to show their advantages in forming high‐performance electrodes.

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High-performance stacked in-plane supercapacitors and supercapacitor array fabricated by femtosecond laser 3D direct writing on polyimide sheets

Cited by 98 publications

References 57 publications

3D‐Printed, Superelastic Polypyrrole–Graphene Electrodes with Ultrahigh Areal Capacitance for Electrochemical Energy Storage

3D‐Printed, Superelastic Polypyrrole–Graphene Electrodes with Ultrahigh Areal Capacitance for Electrochemical Energy Storage

Direct Semiconductor Laser Writing of Few‐Layer Graphene Polyhedra Networks for Flexible Solid‐State Supercapacitor

On‐Chip Microsupercapacitors: From Material to Fabrication

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