Nanocomposites with MXenes

MXene-based nanocomposites are gaining attention for their exceptional electrical conductivity (>10^4 S/cm) and mechanical strength (>500 MPa). MXenes, derived from MAX phases like Ti3C2Tx, offer tunable surface chemistry through functional groups (-O, -OH, -F), enabling compatibility with polymers such as epoxy and polyvinyl alcohol (PVA). Recent studies show that adding just 0.1-0.5 wt% MXene enhances tensile strength by up to 50% while maintaining flexibility. These materials are being explored for flexible electronics and energy storage devices.

The thermal conductivity of MXene nanocomposites can reach up to 200 W/m·K when combined with thermally conductive fillers like boron nitride nanosheets (BNNS). Hybrid systems incorporating MXenes and BNNS at a ratio of 1:1 have demonstrated thermal conductivity improvements of over 300%, making them ideal for heat dissipation in high-power electronics. Additionally, these composites exhibit excellent thermal stability, retaining >90% of their mechanical properties at temperatures up to 400°C.

MXene nanocomposites exhibit superior electromagnetic interference (EMI) shielding effectiveness (>60 dB) due to their high electrical conductivity and layered structure. By integrating MXenes into polymer matrices at loadings of 5-10 wt%, researchers have achieved EMI shielding values comparable to metals while maintaining lightweight properties (<1 g/cm³). These materials are being developed for next-generation communication devices and aerospace applications where EMI shielding is critical.

MXene-based nanocomposites are also being explored for energy storage applications due to their high specific capacitance (>500 F/g) and fast charge-discharge rates (<10 ms). When combined with conductive polymers like polyaniline (PANI), these composites achieve energy densities exceeding 100 Wh/kg, rivaling traditional lithium-ion batteries. Recent advancements include the development of flexible supercapacitors with cycling stability over 10,000 cycles and capacitance retention >95%.

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