High-performance flexible asymmetric supercapacitors based on 3D porous graphene/MnO<sub>2</sub>nanorod and graphene/Ag hybrid thin-film electrodes

Shao, Yuanlong; Wang, Hongzhi; Zhang, Qinghong; Li, Yaogang

doi:10.1039/c2tc00235c

Cited by 157 publications

(110 citation statements)

References 43 publications

(42 reference statements)

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“…[ 195 ] The asymmetric fi lm SCs were also achieved based on graphene/MnO 2 composite fi lms and they exhibit high energy density. [ 189,192,196,197 ] Apart from MnO 2 , other transition metal oxides also exhibit the capacity of enhancing the specifi c capacitance of graphenebased SC electrodes, as shown in Figure 8 i. [198][199][200] For example, ZnO with tailoring nanostructures can easily grow on various substrates, especially on graphene fi lms.…”

Section: Graphene/transition Metal Oxide Composite Architecturesmentioning

confidence: 99%

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Niu

Liu

Zhang

et al. 2015

Advanced Energy Materials

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Supercapacitors (SCs), also called electrochemical capacitors, often show high power density, excellent charge/discharge rates, and long cycle life. The recent development of flexible and wearable electronic devices requires that their power sources be sufficiently compact and flexible to match these electronic components. Therefore, flexible SCs have attracted much attention to power current advanced electronics that can be flexible and wearable. In the past several years, many different strategies have been developed to programmably construct different nanocarbon materials into bendable electrode architectures. Furthermore, flexible SC devices with simplified configurations have also been designed based on these nanocarbon‐based architectures. Here, recent developments in the programmable assembly of bendable architectures based on nanocarbon materials are presented. Additionally, the design of flexible nanocarbon‐based SC devices with various configurations is highlighted. The progress made recently paves the way for further development of nanocarbon architectures and corresponding flexible SC devices. Future development and prospects in this area are also analyzed.

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Section: Graphene/transition Metal Oxide Composite Architecturesmentioning

confidence: 99%

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Niu

Liu

Zhang

et al. 2015

Advanced Energy Materials

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“…8,[49][50][51] AgNP-decorated graphene is most promising for optoelectronics, 51 catalysis, 52 and electrochemistry 53 applications; it also shows enhanced antibacterial activity. 45,54,55 Therefore, the fabrication of graphene-Ag nanocomposites is of great interest.…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide–silver nanoparticle nanocomposite: a potential anticancer nanotherapy

Gurunathan¹,

Han²,

Park³

et al. 2015

IJN

215

217

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Background Graphene and graphene-based nanocomposites are used in various research areas including sensing, energy storage, and catalysis. The mechanical, thermal, electrical, and biological properties render graphene-based nanocomposites of metallic nanoparticles useful for several biomedical applications. Epithelial ovarian carcinoma is the fifth most deadly cancer in women; most tumors initially respond to chemotherapy, but eventually acquire chemoresistance. Consequently, the development of novel molecules for cancer therapy is essential. This study was designed to develop a simple, non-toxic, environmentally friendly method for the synthesis of reduced graphene oxide–silver (rGO–Ag) nanoparticle nanocomposites using Tilia amurensis plant extracts as reducing and stabilizing agents. The anticancer properties of rGO–Ag were evaluated in ovarian cancer cells. Methods The synthesized rGO–Ag nanocomposite was characterized using various analytical techniques. The anticancer properties of the rGO–Ag nanocomposite were evaluated using a series of assays such as cell viability, lactate dehydrogenase leakage, reactive oxygen species generation, cellular levels of malonaldehyde and glutathione, caspase-3 activity, and DNA fragmentation in ovarian cancer cells (A2780). Results AgNPs with an average size of 20 nm were uniformly dispersed on graphene sheets. The data obtained from the biochemical assays indicate that the rGO–Ag nanocomposite significantly inhibited cell viability in A2780 ovarian cancer cells and increased lactate dehydrogenase leakage, reactive oxygen species generation, caspase-3 activity, and DNA fragmentation compared with other tested nanomaterials such as graphene oxide, rGO, and AgNPs. Conclusion T. amurensis plant extract-mediated rGO–Ag nanocomposites could facilitate the large-scale production of graphene-based nanocomposites; rGO–Ag showed a significant inhibiting effect on cell viability compared to graphene oxide, rGO, and silver nanoparticles. The nanocomposites could be effective non-toxic therapeutic agents for the treatment of both cancer and cancer stem cells.

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“…The utilization of 3D porous graphene scaffold to load nanostructured polyaniline dramatically enhances the electrical conductivity, the specific capacitance, and the cycle stability of the graphene-polyaniline nanocomposite. Shao et al demonstrated a simple method for preparing high-performance flexible asymmetric supercapacitors based on 3D porous graphene/MnO 2 nanorod and graphene/Ag hybrid thin-film electrodes [59]. These graphene hybrid films, which accelerate ion and electron transport by providing lower ion-transport resistances and shorter diffusion-distances, exhibit high specific capacitances and power performances, and excellent mechanical flexibility.…”

Section: Flexible Supercapacitors Using 3d Graphene-based Porous Matementioning

confidence: 98%

Preparation of Porous Graphene-Based Nanomaterials for Electrochemical Energy Storage Devices

Piao

2015

Nano Devices and Circuit Techniques for Low-Energy Applications and Energy Harvesting

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Graphene-based nanostructures exhibit good mechanical strength, high porosity, outstanding electrical conductivity, and excellent thermal and chemical stability, which in addition to its low cost, versatile functionalization chemistry, and relative ease of large-scale preparation make it ideally suited to serve as a key component for the development of new electrode materials. Recently, a wide variety of methods have been developed for the formation of porous graphene architectures to further improve the performances. Porous graphene provides abundant pathways for rapid ion diffusion and high accessible surface area. In this chapter, the recent continued breakthroughs in the preparation of porous graphene-based nanoarchitectures as well as their applications as electrode materials for electrochemical energy storage devices are introduced.

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High-performance flexible asymmetric supercapacitors based on 3D porous graphene/MnO₂nanorod and graphene/Ag hybrid thin-film electrodes

Cited by 157 publications

References 43 publications

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Reduced graphene oxide–silver nanoparticle nanocomposite: a potential anticancer nanotherapy

Preparation of Porous Graphene-Based Nanomaterials for Electrochemical Energy Storage Devices

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High-performance flexible asymmetric supercapacitors based on 3D porous graphene/MnO2nanorod and graphene/Ag hybrid thin-film electrodes

Cited by 157 publications

References 43 publications

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

Reduced graphene oxide&ndash;silver nanoparticle nanocomposite: a potential anticancer nanotherapy

Preparation of Porous Graphene-Based Nanomaterials for Electrochemical Energy Storage Devices

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Product

Resources

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High-performance flexible asymmetric supercapacitors based on 3D porous graphene/MnO₂nanorod and graphene/Ag hybrid thin-film electrodes

Reduced graphene oxide–silver nanoparticle nanocomposite: a potential anticancer nanotherapy