Constructing tunable core-shell Co5Ge3@Co nanoparticles on reduced graphene oxide by an interfacial bonding promoted Kirkendall effect for high lithium storage performances

Laser-forged transformation and encapsulation of nanoalloys: pioneering robust wideband electromagnetic wave absorption and shielding from GHz to THz

“…Notably, the Fe/Co/Ni nanoalloy, driven by the ferromagnetically enhanced Kirkendall diffusion effect, exhibited confinement within a core-shell structure, effectively thwarting magnetic agglomeration. Consequently, magnetic nanoalloys, ranging around 100 nm, were clearly discernible within the foam-like architecture [14,32]. Additionally, a substantial population of sub-10 nm alloy particles was found to be distributed upon the graphene layer (figure 1(f)).…”

Germanium–Cobalt–Indium Nanostructures as Anodes of Lithium-Ion Batteries for Room- and Low-Temperature Performance

“…In single-phase systems [19][20][21][22][23][24][25][26], including cobalt-based alloys [19][20][21][22], the alloys are destroyed at the first polarization with formation of inactive cobalt nanoparticles and a lithiated second component. It was noted in [10] that there are only three papers on the Ge-Co alloys in the literature [27][28][29] and all of them cannot be considered reliable. Indeed, the study in [27] describes composite CoGe 2 @C with a specific capacity very different to theoretical calculations, the study in [28] put forward an idea that Co is not an inactive component in the Ge−Co system because redox-transformation Co 2+ /Co 3+ contributes some extra capacity, and the study in [29] reported a specific capacity 1535 mAh/g-an overestimation.…”

Synthesis of Liquid Gallium@Reduced Graphene Oxide Core–Shell Nanoparticles with Enhanced Photoacoustic and Photothermal Performance

“…In this work, we report a simple one-pot approach to produce liquid Ga-based core–shell NPs, in which liquid GaNPs serve as a sacrificial reductive core and are coated with a layer of densely packed reduced graphene oxide (RGO) nanosheets (Figure a). To enhance the photothermal conversion efficiency of liquid GaNPs, a graphene nanosheet shell is utilized as a strong light absorber and photothermal conversion center in this work. , Conventional methods to synthesize NPs with a metallic core–graphene shell require the surface modification of a rigid core with positively charged functional groups as the first step to attract negatively charged graphene oxide (GO) sheets. , RGO forms by chemical reduction of the GO sheets by, for example, the addition of hydrazine hydrate , or thermal treatment with a H 2 –Ar gas mixture. , Such relatively complicated synthetic methods may limit the scale-up of the product, and most surfactants in the reactions are hard to be removed and toxic to cells, , which further brings safety hazards in the field of biological-related applications. Micro-sized LM droplets assembled with reduced GO sheets was developed by Baharfar et al Using the strong galvanic interaction between LM and GO, the core–shell structure was synthesized and applied to selective biosensing of dopamine, which is one of the most important neurotransmitters.…”

“…32,33 RGO forms by chemical reduction of the GO sheets by, for example, the addition of hydrazine hydrate 32,34 or thermal treatment with a H 2 −Ar gas mixture. 33,35 Such relatively complicated synthetic methods may limit the scale-up of the product, and most surfactants in the reactions are hard to be removed and toxic to cells, 36,37 which further brings safety hazards in the field of biological-related applications. Microsized LM droplets assembled with reduced GO sheets was developed by Baharfar et al 38 Using the strong galvanic interaction between LM and GO, the core−shell structure was synthesized and applied to selective biosensing of dopamine, which is one of the most important neurotransmitters.…”