Scalable microfabrication of three-dimensional porous interconnected graphene scaffolds with carbon spheres for high-performance all carbon-based micro-supercapacitors

Chen, Yiming; Guo, Minghao; He, Liang; Yang, Wei; Xu, Lin; Meng, Jiashen; Tian, Xiaocong; Ma, Xinyu; Yu, Qiang; Yang, Kai-Chun; Hong, Xufeng; Mai, Liqiang

doi:10.1016/j.jmat.2018.11.009

Cited by 18 publications

(8 citation statements)

References 56 publications

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“…The capacitive and faradic electrodes with outstanding flexibility are key components for flexible AMSCs. Generally, carbon-based materials were used for the capacitive part, while conducting polymers and transition-metal oxides were prepared for the faradic part. − Nonetheless, these materials were commonly compressed into a slice or grown on a conductive matrix (e.g., nickel foam) as electrodes, resulting in poor mechanical flexibility, which are not able to be integrated with on-chip electronics . Therefore, flexible capacitive and faradic electrodes should be produced.…”

Section: Introductionmentioning

confidence: 99%

All Pseudocapacitive Nitrogen-Doped Reduced Graphene Oxide and Polyaniline Nanowire Network for High-Performance Flexible On-Chip Energy Storage

Zhang

Qing

Chen

et al. 2020

ACS Appl. Energy Mater.

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The rapid progress of wearable and portable electronics demands high-performance on-chip energy storage units. However, it is still challenging to fabricate high-energy and flexible microscale energy storage devices. Herein, we developed a high-performance asymmetric microsupercapacitors (AMSCs) by using all flexible pseudocapacitive electrodes of nitrogen-doped reduced graphene oxide (NRG) and polyaniline nanowire network (PANI). The NRG//PANI-AMSCs could deliver a large voltage window of 1.4 V, a superior volumetric capacitance of 102 F cm–3, areal capacitance of 14.5 mF cm–2, and outstanding energy density of 30.6 mW h cm–3. Besides, the AMSCs revealed remarkable mechanical flexibility under deforming states and presented a stability with 77% capacitance retention after 5000 cycles. In addition, the microelectrodes could be facilely tailored into various geometries and dimensions by laser cutting and assembled on versatile substrates (e.g., leaves, gloves, cloth). Therefore, these AMSCs demonstrate great potential as an on-chip energy storage unit for flexible electronics.

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Section: Introductionmentioning

confidence: 99%

All Pseudocapacitive Nitrogen-Doped Reduced Graphene Oxide and Polyaniline Nanowire Network for High-Performance Flexible On-Chip Energy Storage

Zhang

Qing

Chen

et al. 2020

ACS Appl. Energy Mater.

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“…Even under the high current density (0.5 mA cm –2 ), the device still can reserve the relatively large areal capacitance (3.80 mF cm –2 ), confirming its good rate capability. Especially, the areal capacitance of the CuSe@FeOOH//CuSe@MnOOH AMSCs is much higher than that of pure CuSe@FeOOH (SI, Figure S10A–C, 8.7 mF cm –2 ), pure CuSe@MnOOH(SI, Figure S10D–F, 15.6 mF cm –2 ), and other reported B-3D-PCP (7.10 mF cm –2 at 10 mV s –1 ), heteroatom-doped graphene (17.01 mF cm –2 at 10 mV s –1 ), and 3DGN/SWNT/Ag NW (19 mF cm –2 at 10 μA cm –2 ) based MSCs devices. Also, such CuSe@FeOOH//CuSe@MnOOH AMSCs device can reserve 95% of their initial capacitance after conducting GCD tests at 0.65 mA cm –2 for 32 000 cycles (Figure E), and its columbic efficiency does not show obvious decay, revealing that it possesses excellent cycling performance (please see the first five and the last five GCD curves for the cycling tests of the device shown in Figure S11).…”

Section: Resultsmentioning

confidence: 86%

“…To study the electron transport situation of the device, we performed EIS measurements. The related Nyquist plot (Figure F) exhibits the clear straight-line at low frequency section, suggesting that the fabricated AMSCs has a low ions diffusion resistance . According to the intercept with the real axis at high frequency section, the ESR of the AMSCs is identified to be 133.9 Ω.…”

Section: Resultsmentioning

confidence: 90%

“…The related Nyquist plot (Figure 6F) exhibits the clear straight-line at low frequency section, suggesting that the fabricated AMSCs has a low ions diffusion resistance. 51 According to the intercept with the real axis at high frequency section, the ESR of the AMSCs is identified to be 133.9 Ω. In addition, such a device manifests good flexibility and excellent mechanical stability (Figure S12), which can be folded or bent at diverse angles a thousand times with the good reservation of the original electrochemical response signals.…”

Section: Resultsmentioning

confidence: 99%

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Alternate Integration of Vertically Oriented CuSe@FeOOH and CuSe@MnOOH Hybrid Nanosheets Frameworks for Flexible In-Plane Asymmetric Micro-supercapacitors

Gong

Zhang

et al. 2020

ACS Appl. Energy Mater.

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Two-dimensional transition metal oxyhydroxide (MOOH) nanostructures show great potential for application in catalysis, sensing, secondary batteries, and supercapacitors fields. Nonetheless, it is still a challenge to orient and hybridize MOOH nanosheets with carbon-free conductive materials (e.g., CuSe), and their uses in flexible inplane asymmetric microsupercapacitors (AMSCs) are not explored. Herein, vertically oriented CuSe@FeOOH and CuSe@MnOOH hybrid nanosheet frameworks are alternately integrated on Au interdigital electrodes/polyethylene terephthalate substrate through a successive electrodeposition strategy without any template. Because of the unique geometric motifs and composition combination, those hybrid nanosheets frameworks exhibit greatly enhanced specific capacitance (543.9 F g −1 for CuSe@ FeOOH, 422.9 F g −1 for CuSe@MnOOH). An in-plane AMSCs (CuSe@FeOOH// CuSe@MnOOH) is directly assembled by using poly(vinyl alcohol)-LiCl gel as the electrolyte. The as-fabricated AMSCs manifests large areal capacitance (20.47 mF cm −2 ), remarkable cycle stability (95% remained after 32 000 cycles), excellent flexibility and mechanical stability. Moreover, it also exhibits a high volumetric energy density of 16.0 mW h cm −3 and a power density of 1299.4 mW cm −3 , outperforming most recently reported in-plane microsupercapacitors. This work may promote the development of MOOH-based two-dimensional heteronanostructures and accelerate their applications in flexible energy storage or other clean energy fields.

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“…Recently, due to the rapid development of miniature electronic devices and systems, the micro‐energy storage devices (MESDs) have great demand for hetero integration and high performance . Considerable efforts have been delivered in investigating and developing MESDs with high capacity/capacitance and long cycle life . Typically, MESDs include micro‐supercapacitors (MSCs) and microbatteries (MBs) with planar configuration or stacked configuration.…”

Section: Introductionmentioning

confidence: 99%

Ultrastable High‐Energy On‐Chip Nickel–Bismuth Microbattery Powered by Crystalline Bi Anode and Ni–Co Hydroxide Cathode

Hong

et al. 2019

Energy Tech

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On‐chip microbatteries (MBs) with excellent electrochemical performance have attracted great attention for applications in miniaturized electronics. However, the lack of strategy for well‐suited integration of microelectrodes with decent mechanical properties and high electrochemical performance in microdevices restricts the development of on‐chip MBs. This work proposes a promising planar nickel–bismuth (Ni//Bi) MB, constructed through the microelectromechanical system‐based fabrication process and facile electrodeposition of Bi anode and Ni1−xCox(OH)2 cathode. Benefiting from the large surface area and effective integration of electrodes, the fabricated Ni//Bi MB achieves a relatively high energy density of 12.3 μWh cm−2 and high stability with 84.44% capacity retention after 1000 cycles. With an attractive fabrication technique and outstanding electrochemical performance, the Ni//Bi MB shows great potential for prospective applications in portable devices/systems.

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Scalable microfabrication of three-dimensional porous interconnected graphene scaffolds with carbon spheres for high-performance all carbon-based micro-supercapacitors

Cited by 18 publications

References 56 publications

All Pseudocapacitive Nitrogen-Doped Reduced Graphene Oxide and Polyaniline Nanowire Network for High-Performance Flexible On-Chip Energy Storage

All Pseudocapacitive Nitrogen-Doped Reduced Graphene Oxide and Polyaniline Nanowire Network for High-Performance Flexible On-Chip Energy Storage

Alternate Integration of Vertically Oriented CuSe@FeOOH and CuSe@MnOOH Hybrid Nanosheets Frameworks for Flexible In-Plane Asymmetric Micro-supercapacitors

Ultrastable High‐Energy On‐Chip Nickel–Bismuth Microbattery Powered by Crystalline Bi Anode and Ni–Co Hydroxide Cathode

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