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dc.contributor.authorZhao, B.
dc.contributor.authorZheng, Y.
dc.contributor.authorYe, F.
dc.contributor.authorDeng, X.
dc.contributor.authorXu, X.
dc.contributor.authorLiu, M.
dc.contributor.authorShao, Zongping
dc.identifier.citationZhao, B. and Zheng, Y. and Ye, F. and Deng, X. and Xu, X. and Liu, M. and Shao, Z. 2015. Multifunctional Iron Oxide Nanoflake/Graphene Composites Derived from Mechanochemical Synthesis for Enhanced Lithium Storage and Electrocatalysis. ACS Applied Materials and Interfaces. 7 (26): pp. 14446-14455.

Composites consisting of nanoparticles of iron oxides and graphene have attracted considerable attention in numerous applications; however, the synthesis methods used to achieve superior functionalities are often complex and unamenable to low-cost large-scale industrial production. Here, we report our findings in exploring a simple strategy for low-cost fabrication of multifunctional composites with enhanced properties. In particular, we have successfully prepared FeO(OH) nanoflake/graphene and nano-Fe3O4/graphene composites from commercially available Fe powders and graphite oxides using a simple and low-cost solid-state process, where the metallic Fe is converted to FeO(OH) nanoflake and graphite oxide is reduced/exfoliated to graphene. The resultant nano-Fe3O4/graphene composite is multifunctional, demonstrates specific capacities of 802 and 629 mA h g–1, respectively, at 1000 and 2000 mA g–1 as an electrode material for lithium-ion batteries (LIBs), and also displays efficient catalytic activity for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER); the nominal overpotentials are lower than those for previously reported metal-based catalysts (e.g., IrO2, RuO2, and Pt/C). The dramatically enhanced properties are attributed to the synergistic mechanochemical coupling effects between iron oxide and graphene introduced by the facile process, which is well suited for large-scale cost-effective fabrication.

dc.publisherAmerican Chemical Society
dc.titleMultifunctional Iron Oxide Nanoflake/Graphene Composites Derived from Mechanochemical Synthesis for Enhanced Lithium Storage and Electrocatalysis
dc.typeJournal Article
dcterms.source.titleACS Applied Materials and Interfaces
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

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