2013
DOI: 10.1002/ppsc.201300186
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Magnetic Nanocomposites Formed by FeNi3 Nanoparticles Embedded in Graphene. Application as Supercapacitors

Abstract: A general family of magnetic nanocomposites formed by FeNi3 ferromagnetic nanoparticles (NPs) embedded in a graphitized carbon matrix is reported. The soft chemical approach used relies on the catalytic effect of the NPs resulting from the thermal decomposition of the layered double hydroxide precursor, which acts as a multilayered nanoreactor enabling the formation of a range of carbon nanoforms (CNFs). This is followed by acid treatment of the as‐prepared nanocomposites to isolate the different CNFs formed. … Show more

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Cited by 55 publications
(50 citation statements)
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“…The intricate structure of the graphene matrix is related to the evolution of the previous carbon nanoonions (CNO) obtained at 400 1C. 18,19 Clear evidence of this assumption could be obtained from HRTEM images of the hybrids depicted in Fig. 1E, in which a deployed graphene monolayer from a CNO can be clearly seen.…”
Section: Structural Characterizationmentioning
confidence: 82%
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“…The intricate structure of the graphene matrix is related to the evolution of the previous carbon nanoonions (CNO) obtained at 400 1C. 18,19 Clear evidence of this assumption could be obtained from HRTEM images of the hybrids depicted in Fig. 1E, in which a deployed graphene monolayer from a CNO can be clearly seen.…”
Section: Structural Characterizationmentioning
confidence: 82%
“…0.34 nm spacing for the carbon coating is consistent with literature values for the interlayer spacing of graphene. 18,24 As evidenced by HRTEM, highly corrugated graphene sheets surrounding the metal NPs can be observed (Fig. 1B-D).…”
Section: Structural Characterizationmentioning
confidence: 89%
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“…26 The NiFe-LDH materials have demonstrated their utility as catalysts in the lowtemperature synthesis of several carbon nanoforms, including carbon nano-onions, 27 bamboo-like carbon nanotubes 28 or even graphene -when they are used as precursors for the preparation of hybrid FeNi 3 -graphene nanocomposites. [28][29][30] We have thoroughly characterized the as-obtained spheres by means of XRD, Raman, FT-IR, TG, FESEM, FIB-SEM, HRTEM, DLS, N 2 isotherms, XPS and Electrochemistry. Furthermore, their magneto-transport properties revealed a semiconducting behaviour with an intrinsic large MR of ca.…”
Section: Introductionmentioning
confidence: 99%