With the rapid development of modern electronics such as AI chips and new-energy batteries, the continuously increasing heat flux density and stringent safety requirements impose severe demands on polymer-based electronic packaging materials. However, conventional polymers inherently exhibit low thermal conductivity, which limits their ability to dissipate heat efficiently. Moreover, the inherently flammability of polymer can induce fire disaster under thermal runaway, short circuit or external ignition. This review provides a comprehensive overview of recent advances in thermally conductive and flame-retardant integrated polymer composites. Emphasis is placed on the structural optimization and spatial distribution of functional fillers, and on how these factors govern thermal conduction and flame retardancy in polymer composites. In particular, the roles of multicomponent hybridization, surface modification, and heterostructure filler design, as well as horizontally aligned, vertically aligned, and three-dimensional continuous filler networks within the polymer matrix, are systematically discussed. Furthermore, based on current understanding of thermal conduction and flame-retardant mechanisms, key challenges and future development directions for integrated thermal conduction and flame retardancy in polymer composites are outlined. This review is expected to provide useful guidance for the rational fabrication of thermally conductive and flame-retardant integrated polymer composites for advanced electronic packaging applications.

In this study, BP@ZIF-67 (BZ), a special heterostructural nanofiller, was innovatively constructed by growing ZIF-67 in situ on black phosphorus (BP) nanosheets, and introduced it into the waterborne epoxy resin (WEP) coating. In addition, only 0.4 wt.% BZ nanofiller needs to be introduced to give the WEP coating an excellent overall performance improvement. After 42-day of immersion in 3.5 wt.% NaCl solution, the impedance modulus of 4-BZ/WEP in the low frequency region of 0.01 Hz (|Z_{0.01 Hz}|) jumped two orders of magnitude compared to the pure WEP coating, showing a strong corrosion protection barrier effect; The wear rate of the 4-BZ/WEP coating is greatly reduced by 89.98% compared to the blank WEP coating, and the wear resistance has been qualitatively improved. And compare with the blank WEP coating, the peak heat release rate (PHRR) of the 4-BZ/WEP coating is reduced by 10.22%, effectively improving the fire safety and thermal stability of the material. The strategy of using BP nanosheets and ZIF-67 to construct multifunctional nanofillers provides a promising new way for the development of high-performance waterborne epoxy composite coatings that integrate long-term corrosion protection, high wear resistance and good flame retardancy.

SnS₂ stands out as a promising lithium storage anode due to its high specific capacity, low voltage plateau, and cost-effectiveness. However, practical applications are hindered by significant limitations, including low electrical conductivity, volumetric expansion, and sulfur dissolution. In this study, carbon-encrusted SnS₂ nanoparticles are anchored onto few-layered MXene via a straightforward ultrasound-assisted ball milling method, yielding SnS₂@C/MXene nanocomposites. Kinetic experiments demonstrate that this innovative ball milling approach facilitates the infiltration of SnS₂@C into the distorted sites of MXene, effectively curbing interlayer stacking, expediting ion transfer, and bolstering the pseudocapacitance contribution of the anode. Concurrently, the few-layered MXene intertwines with SnS₂@C, effectively mitigating the volume fluctuations of the active SnS₂@C. As a lithium-ion battery (LiB) anode, SnS₂@C/MXene exhibits a specific capacity of 867.1 mAh g⁻¹ after 100 cycles at 0.1 A g⁻¹. Moreover, the SnS₂@C/MXene anode demonstrates remarkable reversible specific capacities of 1,162.9, 1,001.0, 838.1, 724.8, 591.5, and 413.9 mAh g⁻¹ under 0.1, 0.2, 0.5, 1, 2, and 5 A g⁻¹, respectively, surpassing those of recently reported SnS_x-based LiB anodes. These findings underscore the significant potential of SnS₂@C/MXene nanocomposites for high-performance LiBs.