A Solid - state reaction route to anchoring Ni(OH)2 nanoparticles on reduced graphene oxide sheets for supercapacitors / Zhipeng Sun in Industrial & engineering chemistry research, Vol. 51 N° 30 (Août 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 9973-9979 Titre : A Solid - state reaction route to anchoring Ni(OH)2 nanoparticles on reduced graphene oxide sheets for supercapacitors Type de document : texte imprimé Auteurs : Zhipeng Sun, Auteur ; Xianmao Lu, Auteur Année de publication : 2012 Article en page(s) : pp. 9973-9979 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanoparticle Solid state reaction Résumé : A mechanically assisted solid-state reaction method is employed to prepare graphene[Ni(OH)2 nanocomposites for supercapacitor electrode materials. Morphological analyses reveal that, at a loading 50 wt % Ni(OH)2, nanoparticles with an average size of ∼10 nm are formed and uniformly dispersed on the surface of reduced graphene oxide sheets functionalized with benzenesulfonate. Electrochemical measurements of the composite material show a high specific capacitance of 1568 F g―1 (based on nickel hydroxide) at a current density of 4 A g―1, significantly higher than that of bare Ni(OH)2 nanoparticles prepared without the use of graphene. This much improved electrochemical performance is enabled by both the well-dispersed Ni(OH)2 nanoparticles that offer large accessible surface area and the hydrophilic functional groups on graphene surface that facilitate electrolyte transport. The scalable solid-state synthesis developed in this work is promising for a green chemical approach to the preparation of supercapacitor electrode materials with high performance. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201410 [article] A Solid - state reaction route to anchoring Ni(OH)2 nanoparticles on reduced graphene oxide sheets for supercapacitors [texte imprimé] / Zhipeng Sun, Auteur ; Xianmao Lu, Auteur . - 2012 . - pp. 9973-9979. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 9973-9979 Mots-clés : Nanoparticle Solid state reaction Résumé : A mechanically assisted solid-state reaction method is employed to prepare graphene[Ni(OH)2 nanocomposites for supercapacitor electrode materials. Morphological analyses reveal that, at a loading 50 wt % Ni(OH)2, nanoparticles with an average size of ∼10 nm are formed and uniformly dispersed on the surface of reduced graphene oxide sheets functionalized with benzenesulfonate. Electrochemical measurements of the composite material show a high specific capacitance of 1568 F g―1 (based on nickel hydroxide) at a current density of 4 A g―1, significantly higher than that of bare Ni(OH)2 nanoparticles prepared without the use of graphene. This much improved electrochemical performance is enabled by both the well-dispersed Ni(OH)2 nanoparticles that offer large accessible surface area and the hydrophilic functional groups on graphene surface that facilitate electrolyte transport. The scalable solid-state synthesis developed in this work is promising for a green chemical approach to the preparation of supercapacitor electrode materials with high performance. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201410

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