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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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Heller, Adam
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2021Li-Zn Overlayer to Facilitate Uniform Lithium Deposition for Lithium Metal Batteries.citations
- 2020Recent Developments in Dendrite-Free Lithium-Metal Deposition through Tailoring of Micro- and Nanoscale Artificial Coatings.citations
- 2019Compact lithium-ion battery electrodes with lightweight reduced graphene oxide/poly(acrylic acid) current collectorscitations
- 2017Reduced-Graphene Oxide/Poly(acrylic acid) Aerogels as a Three-Dimensional Replacement for Metal-Foil Current Collectors in Lithium-Ion Batteriescitations
- 2017Thermally cross-linked poly(acrylic acid)/reduced-graphene oxide aerogels as a replacement for metal-foil current collectors in lithium-ion batteries
- 2014A free-standing, flexible lithium-ion anode formed from an air-dried slurry cast of high tap density SnO2, CMC polymer binder and Super-P Licitations
- 2012High performance silicon nanoparticle anode in fluoroethylene carbonate-based electrolyte for Li-ion batteriescitations
Places of action
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article
Reduced-Graphene Oxide/Poly(acrylic acid) Aerogels as a Three-Dimensional Replacement for Metal-Foil Current Collectors in Lithium-Ion Batteries
Abstract
<p>We report the synthesis and properties of a low-density (∼5 mg/cm<sup>3</sup>) and highly porous (99.6% void space) three-dimensional reduced graphene oxide (rGO)/poly(acrylic acid) (PAA) nanocomposite aerogel as the scaffold for cathode materials in lithium-ion batteries (LIBs). The rGO-PAA is both simple and starts from readily available graphite and PAA, thereby providing a scalable fabrication procedure. The scaffold can support as much as a 75 mg/cm<sup>2</sup> loading of LiFePO<sub>4</sub> (LFP) in a ∼430 μm thick layer, and the porosity of the aerogel is tunable by compression; the flexible aerogel can be compressed 30-fold (i.e., to as little as 3.3% of its initial volume) while retaining its mechanical integrity. Replacement of the Al foil by the rGO-PAA current collector of the slurry-cast LFP (1.45 ± 0.2 g/cm<sup>3</sup> tap density) provides for exemplary mass loadings of 9 mg<sub>LFP</sub>/cm<sup>2</sup> at 70 μm thickness and 1.4 g/cm<sup>3</sup> density or 16 mg<sub>LFP</sub>/cm<sup>2</sup> at 100 μm thickness and ∼1.6 g/cm<sup>3</sup> density. When compared to Al foil, the distribution of LFP throughout the three-dimensional rGO-PAA framework doubles the effective LFP solution-contacted area at 9 mg/cm<sup>2</sup> loading and increases it 2.5-fold at 16 mg/cm<sup>2</sup> loading. Overall, the rGO-PAA current collector increases the volumetric capacity by increasing the effective electrode area without compromising the electrode density, which was compromised in past research where the effective electrode area has been increased by reducing the particle size.</p>