Graphene: An Emerging Electronic Material (Adv. Mater. 43/2012)

Weiss, Nathan O.; Zhou, Hailong; Liao, Lei; Liu, Yuan; Jiang, Shan; Huang, Yu; Duan, Xiangfeng

doi:10.1002/adma.201290269

Cited by 32 publications

(20 citation statements)

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“…The Raman spectroscopy, as an effective measurement to monitor the defects in graphene sheet, is applied to study these samples. In the spectra, the G‐band at 1584 cm −1 is associated with the graphitic CC sp 2 ‐bonding, and the D‐band at 1352 cm −1 is attributed to the first‐order zone boundary phonons and thought to be the finger print of defects and graphite edges . Remarkably, the intensity of D‐band ( I D ) for HPGF 600 and HPGF 800 is dramatically increased compared to HPGF 400 and RGF, as exhibited in Figure d.…”

Section: Resultsmentioning

confidence: 89%

“…In the spectra, the G-band at 1584 cm −1 is associated with the graphitic C C sp 2 -bonding, and the D-band at 1352 cm −1 is attributed to the fi rst-order zone boundary phonons and thought to be the fi nger print of defects and graphite edges. [ 26 ] Remarkably, the intensity of D-band ( I D ) for HPGF 600 and HPGF 800 is dramatically increased compared to HPGF 400 and RGF, as exhibited in Figure 3 d. Therefore, the intensity ratios of I D / I G for HPGF 800 (1.22) and HPGF 600 (1.18) are higher than those of HPGF 400 (0.97) and RGF (1.0), suggesting a reduction in the graphene domains caused by the increased defects and edges [ 27 ] at high temperature.…”

Section: Physical Properties Of Hpgfsmentioning

confidence: 99%

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Ultra‐light Hierarchical Graphene Electrode for Binder‐Free Supercapacitors and Lithium‐Ion Battery Anodes

Zuo

Kim

Kholmanov

et al. 2015

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A mild and environmental-friendly method is developed for fabricating a 3D interconnected graphene electrode with large-scale continuity. Such material has interlayer pores between reduced graphene oxide nanosheets and in-plane pores. Hence, a specific surface area up to 835 m(2) g(-1) and a high powder conductivity up to 400 S m(-1) are achieved. For electrochemical applications, the interlayer pores can serve as "ion-buffering reservoirs" while in-plane ones act as "channels" for shortening the mass cross-plane diffusion length, reducing the ion response time, and prevent the interlayer restacking. As binder-free supercapacitor electrode, it delivers a specific capacitance up to 169 F g(-1) with surface-normalized capacitance close to 21 μF cm(-2) (intrinsic capacitance) and power density up to 7.5 kW kg(-1), in 6 m KOH aqueous electrolyte. In the case of lithium-ion battery anode, it shows remarkable advantages in terms of the initiate reversible Coulombic efficiency (61.3%), high specific capacity (932 mAh g(-1) at 100 mA g(-1)), and robust long-term retention (93.5% after 600 cycles at 2000 mAh g(-1)).

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Section: Resultsmentioning

confidence: 89%

Section: Physical Properties Of Hpgfsmentioning

confidence: 99%

Ultra‐light Hierarchical Graphene Electrode for Binder‐Free Supercapacitors and Lithium‐Ion Battery Anodes

Zuo

Kim

Kholmanov

et al. 2015

Small

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“…[99][100][101][102] For wearable sensor applications, scalable and reliable synthesis techniques are essential for the production of low-cost and large-area equipment. [99][100][101][102] For wearable sensor applications, scalable and reliable synthesis techniques are essential for the production of low-cost and large-area equipment.…”

Section: Active Materialsmentioning

confidence: 99%

“…Carbon-based nanomaterials, such as graphene and CNTs have attracted much attention due to their excellent electronic and mechanical properties and chemical stability. [99][100][101][102] For wearable sensor applications, scalable and reliable synthesis techniques are essential for the production of low-cost and large-area equipment. For this reason, CNTs can be fabricated by various low purity and high capacity technologies, such as www.advmattechnol.de laser ablation and arc discharge.…”

Section: Active Materialsmentioning

confidence: 99%

Recent Advances in Smart Wearable Sensing Systems

Lou

Wang

Shen

2018

Adv Materials Technologies

158

114

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a research field that integrates a highly diverse range of researchers and practitioners, including electronics, bioengineering, systems engineering, materials science, and other interdisciplinary expertise. [12][13][14][15] However, wearable sensors currently face great challenges because they are still in the initial stage of development. [16] For example, wearable sensors need to be integrated into the proper shape surfaces with compatibility, durability, and abrasion resistance. [17,18] Existing commercial wearable sensing devices are mainly implemented by encapsulating integrated circuits on rigid packaged solid substrates. But rigid packages are not mechanically compatible with soft and curved human bodies, resulting in unreliable measurement results due to measurement positions changed and unreliable skin contact. [19,20] In addition, smart wearable sensing requires complex sensing systems, which can complete a variety of functional electronic components, including data acquisition and processing, equipment operation control, intelligent data display, and self-powered operation.Despite these challenges, new SWSS with flexibility and stretchability has been evolved over the years as the ability to process large amounts of information in real time grows rapidly. [18,21,22] Flexible and stretchable electronic devices are emerging technologies that aim to fabricate electronic circuits on "soft" substrates to achieve mechanical flexibility and stretchable of sensor components, making it possible to construct SWSS with unique characteristics, such as great conformability, excellent stretchability, low cost, and low weight. [23] Flexible sensors can capture target analytes more effectively and produce high-quality signals, while the traditional ones are unable to capture poor quality signal transduction analytes due to their rigidity hindering. [24] In particularly, users can perceive their surroundings in a convenient, effective, and timely manner with the SWSS help. In recent years, the focus on the construction of ultrathin flexible and stretchable sensors has prompted emerging applications of SWSS. [25][26][27][28] Meanwhile, the development of SWSS has become a revolutionary process in sensing technology. In general, the key factor of the SWSS is to respond quickly and accurately to the detection target and then transmit the processed data to the user in an easy to operate display mode. [18] However, despite the rapid growth of wearable and flexible sensing technologies, few SWSSs appear on the market due to their inherent limitations. Therefore, a comprehensive review and systematic summary of the latest technology in the development of SWSS will be beneficial for the entire field.Wearable technology with widespread public attention has generated tremendous economic and social impact, resulting in changes in healthcare procedures and personal lifestyle. Smart wearable sensing systems, as an important type of device in wearable technology which can detect various stimuli relevant to biological species or spe...

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“…Graphene, an allotrope of carbon, with a so‐called honeycomb 2D single‐atomic‐layer structure is constructed by a sheet of sp 2 ‐bonded carbon atoms, which has been viewed as the basic structure of many other carbon allotropes, such as graphite and carbon nanotubes . The carbon–carbon bond length in graphene is about 0.142 nm.…”

Section: Introductionmentioning

confidence: 99%

Solution‐Gated Graphene Transistors for Chemical and Biological Sensors

Yan

Zhang

2013

Adv Healthcare Materials

178

127

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Graphene has attracted much attention in biomedical applications for its fascinating properties. Because of the well-known 2D structure, every atom of graphene is exposed to the environment, so the electronic properties of graphene are very sensitive to charged analytes (ions, DNA, cells, etc.) or an electric field around it, which renders graphene an ideal material for high-performance sensors. Solution-gated graphene transistors (SGGTs) can operate in electrolytes and are thus excellent candidates for chemical and biological sensors, which have been extensively studied in the recent 5 years. Here, the device physics, the sensing mechanisms, and the performance of the recently developed SGGT-based chemical and biological sensors, including pH, ion, cell, bacterial, DNA, protein, glucose sensors, etc., are introduced. Their advantages and shortcomings, in comparison with some conventional techniques, are discussed. Conclusions and challenges for the future development of the field are addressed in the end.

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Graphene: An Emerging Electronic Material (Adv. Mater. 43/2012)

Cited by 32 publications

References 0 publications

Ultra‐light Hierarchical Graphene Electrode for Binder‐Free Supercapacitors and Lithium‐Ion Battery Anodes

Ultra‐light Hierarchical Graphene Electrode for Binder‐Free Supercapacitors and Lithium‐Ion Battery Anodes

Recent Advances in Smart Wearable Sensing Systems

Solution‐Gated Graphene Transistors for Chemical and Biological Sensors

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