Strongly veined carbon nanoleaves as a highly efficient metal-free electrocatalyst.
Strongly veined carbon nanoleaves as a highly efficient metal-free electrocatalyst.
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DOI：
10.1002/anie.201403363
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发表时间：
2014-07
影响因子：
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通讯作者：
Tiannan Ye;Li-Bing Lv;Xinhao Li;Miao Xu;Jie‐Sheng Chen
中科院分区：
文献类型：
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作者：
Tiannan Ye;Li-Bing Lv;Xinhao Li;Miao Xu;Jie‐Sheng Chen
将一维碳纳米纤维（CNF）和二维碳片有效地整合到三维（3D）导电框架中对于它们作为电极材料的实际应用是至关重要的。本文通过尿素和细菌纤维素的简单热缩合反应制备了一种新型的碳纳米纤维与氮掺杂石墨烯（NG）的“脉-叶”型三维复合物。在3D复合物CNF@NG的形成过程中，石墨烯物质通过碳-碳键与CNF连接。这种互连的3D网络有利于电化学反应的电子转移和质量扩散。
Effective integration of one-dimensional carbon nanofibers (CNF) and two-dimensional carbon sheets into three-dimensional (3D) conductive frameworks is essential for their practical applications as electrode materials. Herein, a novel "vein-leaf"-type 3D complex of carbon nanofibers with nitrogen-doped graphene (NG) was prepared through a simple thermal condensation of urea and bacterial cellulose. During the formation of the 3D complex CNF@NG, the graphene species was tethered to CNF via carbon-carbon bonds. Such an interconnected 3D network facilitates both the electron transfer and mass diffusion for electrochemical reactions.