| Autor: |
Degang Jiang, Bacal, Christine Jurene O., Usman, Ken Aldren S., Jizhen Zhang, Si Qin, Hegh, Dylan, Weiwei Lei, Jingquan Liu, Razal, Joselito M. |
| Předmět: |
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| Zdroj: |
Advanced Materials Technologies; Apr2023, Vol. 8 Issue 8, p1-10, 10p |
| Abstrakt: |
Constructing highly porous structures using Ti3C2Tx MXene provides a promising strategy toward achieving low density, high specific surface area, and shorter ion/molecule transport paths. However, the weak MXene-MXene or MXene-substrate interactions hinder the development of ultra-robust and elastic MXene-based architectures. To address this issue, a bio-inspired strategy is developed to effectively adhere the MXene nanosheets onto melamine foam via covalent and hydrogen bonding interactions through polyethyleneimine/polydopamine-modification. The enhanced interactions contribute to high MXene loading (≈94 wt.%) and reversible compressibility even after 10 000 compression/release cycles at 80% strain. The compressible supercapacitor device assembled from this foam exhibits high energy storage capability (119 F g-1 at 2 mV s-1) with capacitance retention of ≈93% after 1000 compression/release cycles at 50% strain. Moreover, the presence of polydopamine and MXene enable the absorption of light in the UV-Vis and near-IR regions, respectively, inducing photothermal conversion functionality, with an evaporation rate of ≈1.5 kg m-2 h-1 and ≈89% solar evaporation efficiency under one sun illumination. It is envisaged that this bio-inspired chemical modification offers a versatile strategy for the assembly of MXene nanosheets onto different substrates for various applications, such as electromagnetic interference shielding, energy storage, and conversion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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