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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Gomez-Romero, Pedro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2018Unveiling BiVO4 nanorods as a novel anode material for high performance lithium ion capacitors: beyond intercalation strategiescitations
- 2018Energy harvesting from neutralization reactions with saline feedbackcitations
- 2018Hybrid graphene-polyoxometalates nanofluids as liquid electrodes for dual energy storage in novel flow cellscitations
- 2018Ultrathin hierarchical porous carbon nanosheets for high-performance supercapacitors and redox electrolyte energy storagecitations
- 2017Mimics of microstructures of Ni substituted Mn1-xNixCo2O4 for high energy density asymmetric capacitorscitations
- 2017Ultrahigh energy density supercapacitors through a double hybrid strategycitations
- 2017Nanostructured mixed transition metal oxides for high performance asymmetric supercapacitors: Facile synthetic strategycitations
- 2017Fundamentals of binary metal oxide-based supercapacitorscitations
- 2017Capacitive vs faradaic energy storage in a hybrid cell with LiFePO4/RGO positive electrode and nanocarbon negative electrodecitations
- 2016Aqueous synthesis of LiFePO4 with Fractal Granularitycitations
- 2016Electrochemical supercapacitive properties of polypyrrole thin films: influence of the electropolymerization methodscitations
- 2015Asymmetric supercapacitors based on hybrid CuO@Reduced Graphene Oxide@Sponge versus Reduced Graphene Oxide@Sponge Electrodescitations
- 2015An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitorscitations
- 2015Low-cost flexible supercapacitors with high-energy density based on nanostructured MnO2 and Fe2O3 thin films directly fabricated onto stainless steelcitations
- 2015A high voltage solid state symmetric supercapacitor based on graphene-polyoxometalate hybrid electrodes with a hydroquinone doped hybrid gel-electrolytecitations
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article
Hybrid graphene-polyoxometalates nanofluids as liquid electrodes for dual energy storage in novel flow cells
Abstract
Solid Hybrid materials abound. But flowing versions of them are new actors in the materials science landscape and in particular for energy applications. This paper presents a new way to deliver nanostructured hybrid materials for energy storage, namely, in the form of nanofluids. We present here the first example of a hybrid electroactive nanofluid (HENFs) combining capacitive and faradaic energy storage mechanisms in a single fluid material. This liquid electrode is composed of reduced graphene oxide and polyoxometalates (rGO‐POMs) forming a stable nanocomposite for electrochemical energy storage in novel Nanofluid Flow Cells. Two graphene based hybrid materials (rGO‐phosphomolybdate, rGO‐PMo<sub>12</sub> and rGO‐phosphotungstate, rGO‐PW<sub>12</sub>) were synthesized and dispersed with the aid of a surfactant in 1 M H<sub>2</sub>SO<sub>4</sub> aqueous electrolyte to yield highly stable hybrid electroactive nanofluids (HENFs) of low viscosity which were tested in a home‐made flow cell under static and continuous flowing conditions. Remarkably, even low concentration rGO‐POMs HENFs (0.025 wt%) exhibited high specific capacitances of 273 F/g(rGO‐PW<sub>12</sub>) and 305 F/g(rGO‐PMo<sub>12</sub>) with high specific energy and specific power. Moreover, rGO‐POM HENFs show excellent cycling stability (∼95 %) as well as Coulombic efficiency (∼77–79 %) after 2000 cycles. Thus, rGO‐POM HENFs effectively behave as real liquid electrodes with excellent properties, demonstrating the possible future application of HENFs for dual energy storage in a new generation of Nanofluid Flow Cells.