Mussel Inspired Highly Aligned Ti3C2Tx MXene Film with Synergistic Enhancement of Mechanical Strength and Ambient Stability
| Autor: | Dae Won Kim, Hyerim Kim, Gang San Lee, Ho Jin Lee, Jungwoo Choi, Jin Goo Kim, In-Ho Kim, Taeyeong Yun, Sun Hwa Lee, Chong Min Koo, Sang Ouk Kim, Ho Seong Hwang, Hyuck Mo Lee |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanocomposite General Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electrical resistivity and conductivity Ultimate tensile strength Electromagnetic shielding General Materials Science Adhesive In situ polymerization Elongation Composite material 0210 nano-technology Layer (electronics) |
| Zdroj: | ACS Nano. 14:11722-11732 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.0c04411 |
| Popis: | Two-dimensional (2D) MXene has shown enormous potential in scientific fields, including energy storage and electromagnetic interference (EMI) shielding. Unfortunately, MXene-based material structures generally suffer from mechanical fragility and vulnerability to oxidation. Herein, mussel-inspired dopamine successfully addresses those weaknesses by improving interflake interaction and ordering in MXene assembled films. Dopamine undergoes in situ polymerization and binding at MXene flake surfaces by spontaneous interfacial charge transfer, yielding an ultrathin adhesive layer. Resultant nanocomposites with highly aligned tight layer structures achieve approximately seven times enhanced tensile strength with a simultaneous increase of elongation. Ambient stability of MXene films is also greatly improved by the effective screening of oxygen and moisture. Interestingly, angstrom thick polydopamine further promotes the innate high electrical conductivity and excellent EMI shielding properties of MXene films. This synergistic concurrent enhancement of physical properties proposes MXene/polydopamine hybrids as a general platform for MXene based reliable applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|