Polymer/Graphene Hybrids for Advanced Energy‐Conversion and ‐Storage Materials

Cui, Linfan; Gao, Jian; Xu, Tong; Qu, Liangti

doi:10.1002/asia.201501443

Cited by 32 publications

(21 citation statements)

References 219 publications

(143 reference statements)

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“…Some reports revealed that excessive SSA allowed full contact of the electrolyte with the carbon surface and induced serious, irreversible side reactions, [27] which resulted in alow Coulombic efficiency.H ence, CNCNs with ar ational SSA will inducel imited SEI formation. [30] As displayed in Figure 4a,t he full survey scans of CNCNs and NCs clearly confirmt he presence of carbon,n itrogen, and oxygen. [30] As displayed in Figure 4a,t he full survey scans of CNCNs and NCs clearly confirmt he presence of carbon,n itrogen, and oxygen.…”

Section: Resultsmentioning

confidence: 76%

“…[18,28,29] XPS measurements have also been performed to further characterize the natureo fe lemental species on the surface of CNCNs and NCs. [30] As displayed in Figure 4a,t he full survey scans of CNCNs and NCs clearly confirmt he presence of carbon,n itrogen, and oxygen. Furthermore, the C1ss pectra can be deconvoluted into four peaks at 284.8, 285.3, 286.3, and 290.5 eV,w hich are assignedt ot he C=C, CÀC, CÀN/CÀO, and C=Ob onds, respectively (Figure 4b and c).…”

Section: Resultsmentioning

confidence: 76%

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Engineering Anisotropically Curved Nitrogen‐Doped Carbon Nanosheets with Recyclable Binary Flux for Sodium‐Ion Storage

Chen

Lai

et al. 2018

ChemSusChem

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As a low-cost substitute of graphene and graphene derivatives, 2D carbon nanosheets are considered to be attractive materials for high-performance electrochemical energy-storage devices. Nevertheless, the lack of cost-effective and green preparation methods still greatly impedes the application of 2D carbon nanosheets in sodium-ion batteries. Herein, an environmental friendly and versatile strategy is proposed to engineer anisotropically curved nitrogen-doped carbon nanosheets (CNCNs) derived from biosources with hydrosoluble and recyclable flux. After undergoing serious corrosion from the LiCl/KCl binary flux, the resulting CNCNs possess high structural stability. Notably, the CNCNs also possess a rational specific surface area, open porous structure, and abundant accessible edges, which can shorten the ion-diffusion path, provide abundant accessible active sites, and result in less charge-transfer impedance and excellent sodium-ion diffusion coefficient (8.9×10 cm s ). As a consequence, CNCN electrodes can deliver a high specific capacity of 361.6 mAh g at 50 mA g . Such architecture provides a promising structural platform for the fabrication of 2D carbons for highly reversible and high capacity sodium-ion batteries.

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 76%

Engineering Anisotropically Curved Nitrogen‐Doped Carbon Nanosheets with Recyclable Binary Flux for Sodium‐Ion Storage

Chen

Lai

et al. 2018

ChemSusChem

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“…Wearable electronic products, such as foldable computers and artificial skin sensors, gain momentum in recent years, leading to the rapid development of flexible energy storage devices . Stretchable fiber‐like supercapacitors as an important kind of flexible energy storage devices are constructed based on stretchable fiber‐like electrodes.…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of High‐Performance Stretchable Fiber‐Like Electrodes and Supercapacitors

et al. 2018

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A facile preparation method was proposed to fabricate core‐sheath structured elastic cord/carbon nanotube (CNT)/polyaniline (PANI) composite fibers with excellent electrochemical performance and good mechanical stretchability. Specifically, we developed a “surface melting for stable attachment” strategy to combine CNT/PANI composite film tightly with elastic cord fiber. The fabricated fiber‐like elastic cord/CNT/PANI composite electrode displays a large gravimetric capacitance of 394 F g−1(corresponds to a linear specific capacitance of 15.4 mF cm−1) and superior rate capability. The electrode capacitance has no obvious decrease when the electrode was stretched from original state to a large stretch ratio of 100%, and the capacitance maintains 98% after 100 stretch‐release cycles; besides, the electrode at stretching state possesses almost same cycling stability and rate capability as it at original state. These results indicate robust micro‐structure and outstanding stretchability of our fiber‐like elastic cord/CNT/PANI composite electrode. Consequently, all‐solid‐state supercapacitors assembled based on the fiber‐like electrode also exhibit impressive stretchability. Overall, the proposed facile method for producing stretchable fiber‐like electrodes/supercapacitors is believed to further boost the practical application of stretchable and wearable energy storage devices.

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“…Among numerous piezoelectric materials, organic piezoelectric materials stand out owing to its flexible, non‐toxic, higher tensile strength properties. Especially, the rapid development of wearable devices make organic piezoelectric materials much more attractive due to their capability not only as electric devices, but also as potential power generator . Poly(vinylidene fluoride) (PVDF) and its derivatives as representative organic piezoelectric materials have been extensively studied .…”

Section: Introductionmentioning

confidence: 99%

“…Especially, the rapid development of wearable devices make organic piezoelectric materials much more attractive due to their capability not only as electric devices, but also as potential power generator. [3][4][5][6][7] Poly(vinylidene fluoride) (PVDF) and its derivatives as representative organic piezoelectric materials have been extensively studied. [8][9][10] However, compared to inorganic piezoelectric material like lead zirconate titanate (PZT) and zinc oxide (ZnO), their low dielectric permittivity is a significant disadvantage, which results in low voltage or actuating force generation capabilities and greatly limits its practical applications.…”

Section: Introductionmentioning

confidence: 99%

Transparent PVDF‐TrFE/Graphene Oxide Ultrathin Films with Enhanced Energy Harvesting Performance

et al. 2017

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Poly(vinylidene fluoride/trifluoroethylene) (PVDF‐TrFE) as a representative organic piezoelectric material have recently attracted wide attention. However, low dielectric permittivity limits its applications. We successfully prepared transparent PVDF‐TrFE/graphene oxide (GO) ultrathin films. The addition of GO greatly improved the dielectric properties of PVDF‐TrFE. The dielectric constant of the composite film is almost three times of that of the PVDF‐TrFE film with the addition of 0.1 wt. % of GO nanosheets. Furthermore, the composite film also exhibits enhanced energy harvesting performance. The electric generator based on the PVDF‐TrFE/ GO ultrathin film shows an output voltages of 49 mV under a pressure of 3.06 KPa. The advantages of transparence, flexibility and better energy harvesting performance make PVDF‐TrFE/GO composite films much more attractive in promising applications of nano/micro electronic devices.

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Polymer/Graphene Hybrids for Advanced Energy‐Conversion and ‐Storage Materials

Cited by 32 publications

References 219 publications

Engineering Anisotropically Curved Nitrogen‐Doped Carbon Nanosheets with Recyclable Binary Flux for Sodium‐Ion Storage

Engineering Anisotropically Curved Nitrogen‐Doped Carbon Nanosheets with Recyclable Binary Flux for Sodium‐Ion Storage

Facile Preparation of High‐Performance Stretchable Fiber‐Like Electrodes and Supercapacitors

Transparent PVDF‐TrFE/Graphene Oxide Ultrathin Films with Enhanced Energy Harvesting Performance

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