Publications
14 results found
Herou S, Ribadeneyra MC, Schlee P, et al., 2021, The impact of having an oxygen-rich microporous surface in carbon electrodes for high-power aqueous supercapacitors, Journal of Energy Chemistry, Vol: 53, Pages: 36-48, ISSN: 2095-4956
The growth of electrical transportation is crucially important to mitigate rising climate change concerns regarding materials supply. Supercapacitors are high-power devices, particularly suitable for public transportation since they can easily store breaking energy due to their high-rate charging ability. Additionally, they can function with two carbon electrodes, which is an advantage due to the abundance of carbon in biomass and other waste materials (i.e., plastic waste). Newly developed supercapacitive nanocarbons display extremely narrow micropores (<0.8 nm), as it increases drastically the capacitance in aqueous electrolytes. Here, we present a strategy to produce low-cost flexible microporous electrodes with extremely high power density (>100 kW kg−1), using fourty times less activating agent than traditionnal chemically activated carbons. We also demonstrate that the affinity between the carbon and the electrolyte is of paramount importance to maintain rapid ionic diffusion in narrow micropores. Finally, this facile synthesis method shows that low-cost and bio-based free-standing electrode materials with reliable supercapacitive performances can be used in electrochemistry.
Au H, Alptekin H, Jensen ACS, et al., 2020, A revised mechanistic model for sodium insertion in hard carbons, Energy and Environmental Science, Vol: 13, Pages: 3469-3479, ISSN: 1754-5692
Hard carbons have shown considerable promise as anodes for emerging sodium-ion battery technologies. Current understanding of sodium-storage behaviour in hard carbons attributes capacity to filling of graphitic interlayers and pores, and adsorption at defects, although there is still considerable debate regarding the voltages at which these mechanisms occur. Here, ex situ23Na solid-state NMR and total scattering studies on a systematically tuned series of hard carbons revealed the formation of increasingly metallic sodium clusters in direct correlation to the growing pore size, occurring only in samples which exhibited a low voltage plateau. Combining experimental results with DFT calculations, we propose a revised mechanistic model in which sodium ions store first simultaneously and continuously at defects, within interlayers and on pore surfaces. Once these higher energy binding sites are filled, pore filling occurs during the plateau region, where the densely confined sodium takes on a greater degree of metallicity.
Herou S, Crespo M, Titirici M, 2020, Investigating the effects of activating agent morphology on the porosity and related capacitance of nanoporous carbons, CRYSTENGCOMM, Vol: 22, Pages: 1560-1567
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- Citations: 5
Ribadeneyra MC, Grogan L, Au H, et al., 2020, Lignin-derived electrospun freestanding carbons as alternative electrodes for redox flow batteries, CARBON, Vol: 157, Pages: 847-856, ISSN: 0008-6223
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- Citations: 28
Li D, Wu L, Qu F, et al., 2019, Core-independent approach for polymer brush-functionalised nanomaterials with a fluorescent tag for RNA delivery, CHEMICAL COMMUNICATIONS, Vol: 55, Pages: 14166-14169, ISSN: 1359-7345
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- Citations: 14
Crespo M, Santagiuliana G, Picot O, et al., 2019, Photo‐Responsive Graphene: A Photoaddressable Liquid Crystalline Phase Transition in Graphene Oxide Nanocomposites (Adv. Funct. Mater. 24/2019), Advanced Functional Materials, Vol: 29, ISSN: 1616-301X
Crespo M, Santagiuliana G, Picot O, et al., 2019, A Photoaddressable Liquid Crystalline Phase Transition in Graphene Oxide Nanocomposites, ADVANCED FUNCTIONAL MATERIALS, Vol: 29, ISSN: 1616-301X
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- Citations: 3
Herou S, Ribadeneyra MC, Madhu R, et al., 2019, Ordered mesoporous carbons from lignin: a new class of biobased electrodes for supercapacitors, GREEN CHEMISTRY, Vol: 21, Pages: 550-559, ISSN: 1463-9262
Santagiuliana G, Picot OT, Crespo M, et al., 2018, Breaking the Nanoparticle Loading-Dispersion Dichotomy in Polymer Nanocomposites with the Art of Croissant-Making, ACS NANO, Vol: 12, Pages: 9040-9050, ISSN: 1936-0851
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- Citations: 22
Li Y, Zhang H, Crespo M, et al., 2016, In Situ Exfoliation of Graphene in Epoxy Resins: A Facile Strategy to Efficient and Large Scale Graphene Nanocomposites, ACS APPLIED MATERIALS & INTERFACES, Vol: 8, Pages: 24112-24122, ISSN: 1944-8244
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- Citations: 46
Gonzalez M, Crespo M, Baselga J, et al., 2016, Carbon nanotube scaffolds with controlled porosity as electromagnetic absorbing materials in the gigahertz range, NANOSCALE, Vol: 8, Pages: 10724-10730, ISSN: 2040-3364
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- Citations: 35
Crespo M, Gonzalez M, Elias AL, et al., 2014, Ultra-light carbon nanotube sponge as an efficient electromagnetic shielding material in the GHz range, PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, Vol: 8, Pages: 698-704, ISSN: 1862-6254
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- Citations: 75
Crespo M, Mendez N, Gonzalez M, et al., 2014, Synergistic effect of magnetite nanoparticles and carbon nanofibres in electromagnetic absorbing composites, CARBON, Vol: 74, Pages: 63-72, ISSN: 0008-6223
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- Citations: 69
Crespo M, Gonzalez M, Pozuelo J, 2014, Magnetic silica:epoxy composites with a nano- and micro-scale control, MATERIALS CHEMISTRY AND PHYSICS, Vol: 144, Pages: 335-342, ISSN: 0254-0584
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- Citations: 6
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