Controllable fabrication and multifunctional applications of graphene/ceramic composites

Abstract

Graphene with excellent comprehensive properties has been considered as a promising filler to reinforce ceramics. While numerous studies have been devoted to the improvement of mechanical and electrical properties, incorporating graphene to ceramics also offers new opportunities for endowing ceramics with versatility. In this review, the recent development of graphene/ceramic bulk composites is summarized with the focus on the construction of well-designed architecture and the realization of multifunctional applications. The processing technologies of the composites are systematically summarized towards homogeneous dispersion and even ordered orientation of graphene sheets in the ceramic matrix. The improvement of composites in mechanical, electrical, electromagnetic, and thermal performances is discussed. The novel multifunctional applications brought by smart integration of graphene in ceramics are also addressed, including microwave absorption, electromagnetic interference shielding, ballistic armors, self-monitor damage sensors, and energy storage and conversion.

Applications of Ceramic/Graphene Composites and Hybrids

“…Particularly, graphene has received special attention due to its low density, high specific surface area, strong dielectric loss, and high electronic conductivity. However, to address the interfacial impedance mismatching of single graphene materials, ceramic/graphene composites have been broadly considered [ 189 , 190 ]; among the factors affecting their EMI shielding are the absorber type and content, thickness, and preparation method. For practical applications of ceramic/graphene composites, the main objective is to achieve good EM performance (including wide effective bandwidth, low reflection coefficient (RC) or large SE, and high-temperature stability) with minimum filler content and the tiniest thickness.…”

Recent Advances in Biomaterial Scaffolds for Integrative Tumor Therapy and Bone Regeneration

“…Graphene and its derivatives have strong absorbance in NIR range, high photothermal conversion efficiency and low toxicity in vivo, which are considered as a class of photothermal agents for potential photothermal tumor therapy. [90][91][92][93] Nowadays, many studies attempted to functionalize biomaterial scaffolds with graphene or its derivatives for achieving photothermal effect to combat bone tumors. For example, Ma et al used hBMSCs, pre-osteoblastic MC3T3-E1 cells and human osteosarcoma cells (HOS) as cell models, and found that nHA/GO particles exhibited good biocompatibility and excellent photothermal effect for killing HOS, and stimulating cell proliferation and differentiation of hBMSCs.…”

“…Graphene and its derivatives have strong absorbance in NIR range, high photothermal conversion efficiency and low toxicity in vivo, which are considered as a class of photothermal agents for potential photothermal tumor therapy. [ 90–93 ] Nowadays, many studies attempted to functionalize biomaterial scaffolds with graphene or its derivatives for achieving photothermal effect to combat bone tumors. For example, Ma et al.…”

High electromagnetic interference shielding effectiveness in MgO composites reinforced by aligned graphene platelets

“…The stability and security of electronic devices operating in the vicinity of the strong electromagnetic field are not guaranteed. Consequently, EMI shielding has been highly appreciated in civil, military and aerospace applications to ensure the security of electronic devices 1–8 . In the harsh environments where high strength and corrosion resistance are required, some widely used EMI shielding materials (eg, polymer and metal‐based composites) will lose their superiority, while ceramic materials exhibit excellent stability.…”

“…Consequently, EMI shielding has been highly appreciated in civil, military and aerospace applications to ensure the security of electronic devices. [1][2][3][4][5][6][7][8] In the harsh environments where high strength and corrosion resistance are required, some widely used EMI shielding materials (eg, polymer and metal-based composites) will lose their superiority, while ceramic materials exhibit excellent stability. Among those materials, oxide ceramic materials have many advantages to be used in the severe service environment, such as excellent mechanical properties and corrosion resistance, low cost, and nontoxicity.…”