Design of Fe_3-xO₄ raspberry decorated graphene nanocomposites with high performances in lithium-ion battery

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• 作者：Olivier Gerber^a ; ^c ; Sylvie Bé ; gin-Colin^a ; Benoit P. Pichon^a ; Elodie Barraud^c ; Sé ; bastien Lemonnier^c ; Cuong Pham-Huu ; ^d ; ^{cuong.pham-huu@unistra.fr" class="auth_mail" title="E-mail the corresponding author} ; Barbara Daffos^b ; Patrice Simon^b ; Jeremy Come ; ^b ; ^{jeremy0come@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Dominique Bé ; gin ; ^d ; ^{dominique.begin@unistra.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Graphene ; Fe3&ndash ; xO4 raspberry shaped nanostructures ; Fe3&ndash ; xO4/graphene nanocomposites ; Lithium-ion battery ; Reversible capacity
• 刊名：Journal of Energy Chemistry
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：25
• 期：2
• 页码：272-277
• 全文大小：2308 K

文摘

Fe_3–xO₄ raspberry shaped nanostructures/graphene nanocomposites were synthesized by a one-step polyol-solvothermal method to be tested as electrode materials for Li-ion battery (LIB). Indeed, Fe_3–xO₄ raspberry shaped nanostructures consist of original oriented aggregates of Fe_3–xO₄ magnetite nanocrystals, ensuring a low oxidation state of magnetite and a hollow and porous structure, which has been easily combined with graphene sheets. The resulting nanocomposite powder displays a very homogeneous spatial distribution of Fe_3–xO₄ nanostructures at the surface of the graphene sheets. These original nanostructures and their strong interaction with the graphene sheets resulted in very small capacity fading upon Li⁺ ion intercalation. Reversible capacity, as high as 660 mAh/g, makes this material promising for anode in Li-ion batteries application.