Iron Oxide Nanoparticle and Graphene Nanoribbon Composite as an Anode Material for High- Performance Li-Ion Batteries
Iron Oxide Nanoparticle and Graphene Nanoribbon Composite as an Anode Material for High- Performance Li-Ion Batteries
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DOI：
10.1002/adfm.201303023
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发表时间：
2014-04-01
影响因子：
19
通讯作者：
Tour, James M.
中科院分区：
文献类型：
--
作者：
Lin, Jian;Raji, Abdul-Rahman O.;Tour, James M.
由石墨烯纳米带和氧化铁纳米颗粒制成的复合材料为具有高比容量和循环稳定性的锂离子电池阳极提供了一条显着的途径。在100 mA/g的倍率下，该材料在134次循环后表现出类似于910 mAh/g的高放电容量，这是氧化铁的理论锂离子存储容量的>90%。炭黑、碳纳米管和石墨烯薄片已被研究人员用于实现锂离子电极材料的导电性和稳定性。在本文中，使用石墨烯纳米带作为其上形成氧化铁纳米颗粒的导电平台结合了长碳纳米管和平坦石墨烯表面的优点。在长时间循环中实现的高容量是由于导电石墨烯纳米带的电致变色网络与氧化铁纳米颗粒的高锂离子存储能力之间的协同作用。
A composite material made of graphene nanoribbons and iron oxide nanoparticles provides a remarkable route to lithium-ion battery anode with high specific capacity and cycle stability. At a rate of 100 mA/g, the material exhibits a high discharge capacity of similar to 910 mAh/g after 134 cycles, which is >90% of the theoretical li-ion storage capacity of iron oxide. Carbon black, carbon nanotubes, and graphene flakes have been employed by researchers to achieve conductivity and stability in lithium-ion electrode materials. Herein, the use of graphene nanoribbons as a conductive platform on which iron oxide nanoparticles are formed combines the advantages of long carbon nanotubes and flat graphene surfaces. The high capacity over prolonged cycling achieved is due to the synergy between an electrically percolating networks of conductive graphene nanoribbons and the high lithium-ion storage capability of iron oxide nanoparticles.