A facile and fast electrochemical route to produce functional few-layer graphene sheets for lithium battery anode application

Ouhib, Farid; Aqil, Abdelhafid; Thomassin, Jean‐Michel; Malherbe, Cédric; Gilbert, Bernard; Svaldo-Lanero, Tiziana; Duwez, Anne‐Sophie; Deschamps, Fabien; Job, Nathalie; Vlad, Alexandru; Melinte, Sorin; Jérôme, Christine; Detrembleur, Christophe

doi:10.1039/c4ta03139c

Cited by 17 publications

(18 citation statements)

References 37 publications

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“…In principle, FLG or restacked SLG could display graphite intercalation behavior given that the graphitic crystal structure is restored. Graphene‐based anodes show excessively high lithiation capacities, far above the theoretical 372 mAh g −1 for C 6 Li . The high Li + uptake capability is assigned to higher specific surface area combined with excess Li+ uptake at the surface and edge defects as well as conversion reactions of various functional groups .…”

Section: Unconventional Techniques and Configurationsmentioning

confidence: 96%

“…Graphene-based anodes show excessively high lithiation capacities, far above the theoretical 372 mAh g −1 for C 6 Li. [ 621,623 ] The high Li + uptake capability is assigned to higher specifi c surface area combined with excess Li+ uptake at the surface and edge defects as well as conversion reactions of various functional groups. [ 323,[624][625][626][627][628][629][630] The low volumetric energy density and Coulombic effi ciency at the fi rst cycle as well as higher operating potential have to be addressed before broadly accepting this material as Li-ion battery anode.…”

Section: Graphene-inside Batteries and Capacitorsmentioning

confidence: 99%

“…Hence the lithiated carbons have low negative electrochemical potentials, graphene has been also found suitable as anode materials in Li‐ion (but also Na‐ion) batteries . Distinct from graphite anodes, where Li + intercalates at edge planes, no such reaction is possible in the case of SLG.…”

Section: Unconventional Techniques and Configurationsmentioning

confidence: 99%

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Design Considerations for Unconventional Electrochemical Energy Storage Architectures

Vlad

Singh

Galande

et al. 2015

Advanced Energy Materials

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278

204

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all need to be used in conjugation with an energy storage system to provide smooth power leveling. Currently, electrochemical energy storage systems are by far the most optimal solutions for powering a broad range of technologies, expanding from compact and light-weighted portable electronic devices to stationary gridscale energy storage applications. [3][4][5][6] These energy storage devices (batteries and supercapacitors) store the available electrical energy in the form of chemical energy and release it whenever needed, by simply reversing the electrochemical reaction. [7][8][9][10][11] Among various available battery chemistries, lithium batteries and supercapacitors are the most promising technologies. [ 7,[9][10][11][12][13][14][15][16][17][18][19][20] Ever since the realization of the fi rst electrochemical energy storage cell by Alessandro Volta (end of 17th century), the working principle and its function has changed very little. [ 21,22 ] Basically, two redox couples (or charge storage electrodes), electrically and physically separated, are bridged by an ion conducting medium to constitute an electrochemical cell. This holds true also for modern Li-ion batteries, although the chemistry involved is much more complex. During operation, the electrons are transferred through an external circuit while ions shuttle through the electrolyte to counterbalance the depleted charge at the electrodes. [ 23 ] So far, much of the effort has been directed towards improvement of the energy and power characteristics by downsizing the active components, re-engineering the current collectors and separators, as well as fi ne-tuning the Batteries have become fundamental building blocks for the mobility of modern society. Continuous development of novel battery chemistries and electrode materials has nourished progress in building better batteries. Simultaneously, novel device form factors and designs with multi-functional components have been proposed, requiring batteries to not only integrate seamlessly to these devices, but to also be a multi-functional component for a multitude of applications. Thus, in the past decade, along with developments in the component materials, the focus has been shifting more and more towards novel fabrication processes, unconventional confi gurations, and additional functionalities. This work attempts to critically review the developments with respect to emerging electrochemical energy storage confi gurations, including, amongst others, paintable, transparent, fl exible, wire or cable shaped, ultra-thin and ultra-thick confi gurations, as well as hybrid energy storage-conversion, or graphene-incorporated batteries and supercapacitors. The performance requirements are elaborated together with the advantages, but also the limitations, with respect to established electrochemical energy storage technologies. Finally, challenges in developing novel materials with tailored properties that would allow such confi gurations, and in designing easier manufacturing techniques that can be widely adopted ar...

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Section: Unconventional Techniques and Configurationsmentioning

confidence: 96%

Section: Graphene-inside Batteries and Capacitorsmentioning

confidence: 99%

See 1 more Smart Citation

Design Considerations for Unconventional Electrochemical Energy Storage Architectures

Vlad

Singh

Galande

et al. 2015

Advanced Energy Materials

Self Cite

278

204

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“…On the other hand, extensive oxidation of graphene is inherently averted in cathodic exfoliation due to the fact that the graphite electrode is subjected to reducing conditions (negative potential). This delamination mode has been demonstrated to yield high quality, largely defect-free graphenes using electrolytic media that are typically based on lithium [18,19], sodium [20], alkylammonium [21][22][23], alkylimidazolium [24,25] or alkylpyrrolidinium [24,26,27] salts in such organic solvents as propylene carbonate, acetonitrile, dimethyl sulfoxide or N,N-dimethylformamide. However, carrying out cathodic exfoliation in aqueous (rather than organic) electrolytic media would be highly desirable, as it would make the production process easier to scale-up as well as more environmentally friendly and affordable, but, with the exception of a very recent work [28], this possibility has been seldom reported [29].…”

Section: Introductionmentioning

confidence: 99%

An aqueous cathodic delamination route towards high quality graphene flakes for oil sorption and electrochemical charge storage applications

García‐Dalí

Paredes

Munuera

et al. 2019

Chemical Engineering Journal

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The electrochemical exfoliation of graphite in aqueous medium stands out as an attractive, scalable approach for the production of graphenes for different applications, due to its simplicity, cost-effectiveness and environmental friendliness. In particular, cathodic exfoliation in water should allow access to high quality, non-oxidized graphene flakes, as it avoids the intrinsic oxidizing conditions that typically plague the anodic route, but this possibility has been limited by a poor intercalation ability of aqueous cations. Here, we demonstrate that with a proper choice of starting graphite and electrolyte, high quality graphene flakes can be obtained in substantial yields via cathodic delamination in water. Graphites having some pre-expanded edges and interlayer voids (e.g., graphite foil) were found to be critical for a successful exfoliation.Large differences in the efficiency of a range of aqueous quaternary ammonium-based electrolytes were observed, quantitatively compared and rationalized on the basis of their chemical structure. Graphene yields up to 40-50 wt% were attained with the most efficient cations (tetrapropylammonium and hexyltrimethylammonium). Hydrophobic sponges made up of cathodic graphene-coated melamine foam exhibited a notable capacity towards the sorption of oils and organic solvents from water with good reusability. Hybrids comprised of cathodically exfoliated graphite and a small amount of vertically oriented cobalt oxide nanosheets displayed good electrochemical charge storage behavior. Overall, the ability to access graphene flakes in considerable yields by the aqueous cathodic route disclosed here should raise the prospects of cathodic exfoliation as a competitive method for the industrial manufacturing of high quality graphene for practical applications.

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“…Graphene has been doped with many elements and mixed elements, including sulfur, boron, nitrogen, phosphorus‐nitrogen, and nitrogen‐sulfur . More complex multi‐component graphene materials have also been investigated as well, including N‐doped aligned CNT/graphene sandwiches, amine functionalized graphene nanoflakes (AFGs), polypyrrole anthraquinone sulfonate/graphene, polymer functionalized graphene, 9,10‐Anthraquinone (AQ) and its derivatives, and carboxylic group functionalized graphene . Clearly, there are many combinations of different materials with graphene that are being investigated as electrodes in lithium‐ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Graphene‐Containing Nanomaterials for Lithium‐Ion Batteries

Lü

et al. 2015

Advanced Energy Materials

192

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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A facile and fast electrochemical route to produce functional few-layer graphene sheets for lithium battery anode application

Abstract: We report a simple approach for the production of polymer functionalized graphene for Li-ion battery anodes.

Cited by 17 publications

References 37 publications

Design Considerations for Unconventional Electrochemical Energy Storage Architectures

Design Considerations for Unconventional Electrochemical Energy Storage Architectures

An aqueous cathodic delamination route towards high quality graphene flakes for oil sorption and electrochemical charge storage applications

Graphene‐Containing Nanomaterials for Lithium‐Ion Batteries

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