Highly Conductive Freestanding Graphene Films as Anode Current Collectors for Flexible Lithium-Ion Batteries

Rana, Kuldeep; Singh, Jyoti; Lee, Jeong Taik; Park, Jae Hyung; Ahn, Jong Hyun

doi:10.1021/am500996c

Cited by 53 publications

(32 citation statements)

References 32 publications

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“…Large-area graphene films obtained by a chemical vapor deposition (CVD) growth method are transferable onto any substrate, including flexible and stretchable materials. [1][2][3][4] These films have therefore opened a path for the development of large-area electrical and optical applications, including electrodes for Li-ion batteries, 5,6 supercapacitors, 7,8 and flexible transparent conducting films, [9][10][11] because of their good chemical stability, high flexibility, excellent carrier mobility, and lightweight structures. [12][13][14][15][16][17] However, various problems remain to be solved to enable the practical application of large-area graphene electrodes.…”

Section: Introductionmentioning

confidence: 99%

Formation of environmentally stable hole-doped graphene films with instantaneous and high-density carrier doping via a boron-based oxidant

et al. 2019

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Large-area graphene films have substantial potential for use as next-generation electrodes because of their good chemical stability, high flexibility, excellent carrier mobility, and lightweight structure. However, various issues remain unsolved. In particular, highdensity carrier doping within a short time by a simple method, and air stability of doped graphene films, are highly desirable. Here, we demonstrate a solution-based high-density (>10 14 cm −2) hole doping approach that promises to push the performance limit of graphene films. The reaction of graphene films with a tetrakis(pentafluorophenyl)borate salt, containing a two-coordinate boron cation, achieves doping within an extremely short time (4 s), and the doped graphene films are air stable for at least 31 days. X-ray photoelectron spectroscopy reveals that the graphene films are covered by the chemically stable anions, resulting in an improved stability in air. Moreover, the doping reduces the transmittance by only 0.44 ± 0.23%. The simplicity of the doping process offers a viable route to the large-scale production of functional graphene electrodes.

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Section: Introductionmentioning

confidence: 99%

Formation of environmentally stable hole-doped graphene films with instantaneous and high-density carrier doping via a boron-based oxidant

et al. 2019

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“…Rana et al [ 146 ] obtained fl ower-like MoS 2 particles anchored onto the surface of graphene fi lms via CVD. The hybrid delivered a capacity of ≈580 mAh g −1 at 50 mA g −1 .…”

Section: Mos 2 -Graphene Hybridmentioning

confidence: 99%

“…Guo et al observed graphene‐like MoS 2 flakes when using a thermal decomposition approach. Rana et al obtained flower‐like MoS 2 particles anchored onto the surface of graphene films via CVD. The hybrid delivered a capacity of ≈580 mAh g −1 at 50 mA g −1 .…”

Section: Anode Materialsmentioning

confidence: 99%

Graphene‐Containing Nanomaterials for Lithium‐Ion Batteries

Lü

et al. 2015

Advanced Energy Materials

205

111

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Graphene‐containing nanomaterials have emerged as important candidates for electrode materials in lithium‐ion batteries (LIBs) due to their unique physical properties. In this review, a brief introduction to recent developments in graphene‐containing nanocomposite electrodes and their derivatives is provided. Subsequently, synthetic routes to nanoparticle/graphene composites and their electrochemical performance in LIBs are highlighted, and the current state‐of‐the‐art and most recent advances in the area of graphene‐containing nanocomposite electrode materials are summarized. The limitations of graphene‐containing materials for energy storage applications are also discussed, with an emphasis on anode and cathode materials. Potential research directions for the future development of graphene‐containing nanocomposites are also presented, with an emphasis placed on practicality and scale‐up considerations for taking such materials from benchtop curiosities to commercial products.

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“…Graphene membranes are reported as freestanding films [34][35][36][37][38][39] or supported ones [40,41]. However, most water treatment processes are subjected to high pressures, so that membranes must be robust enough to operate for long periods, therefore supported membranes are preferred.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of N-doped and non-doped partially oxidised graphene membranes supported over ceramic materials

et al. 2016

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Graphene has a great potential to substitute other amorphous carbon materials and has been widely used in many water and wastewater treatments such as purification or photocatalytic processes. Graphene powder with different degrees of oxidation was synthesised and subsequently used to prepare supported membranes. Ceramic porous materials were chosen as membrane support due to the robustness and long life required in a likely application. Ultrathin membranes (7-9 lm) were successfully prepared through vacuum filtration of highly oxidised graphene or reduced graphene oxide solutions (1 mg ml-1). The influence of depositing different amounts of membrane precursor was extensively studied (0.003-0.037 mg cm-2); above 0.037 mg cm-2 , drying-related shrinkage problems are detected. Moreover, the ceramic support pore size (SPS) (0.008-0.08 lm) shows little impact in terms of the overall membrane flux resistance, and the deposited graphene layer usually governs the membrane permeation. Finally, long-term filtration experiments were also performed for weeks without substantial variation of the membrane structure or permeation (B2 %), which is demanded in most conventional water treatments. Overall, the addition of partially oxidised graphene to conventional ceramic membranes greatly decreases their electrical resistivity (*2.8 9 10-5 X m), opening up the possibility of being employed for many environmental purposes.

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Highly Conductive Freestanding Graphene Films as Anode Current Collectors for Flexible Lithium-Ion Batteries

Cited by 53 publications

References 32 publications

Formation of environmentally stable hole-doped graphene films with instantaneous and high-density carrier doping via a boron-based oxidant

Formation of environmentally stable hole-doped graphene films with instantaneous and high-density carrier doping via a boron-based oxidant

Graphene‐Containing Nanomaterials for Lithium‐Ion Batteries

Synthesis of N-doped and non-doped partially oxidised graphene membranes supported over ceramic materials

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