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用于锂电池应用的氮掺杂石墨烯薄膜的合成。

Synthesis of nitrogen-doped graphene films for lithium battery application.

机构信息

Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas 77005, United States.

出版信息

ACS Nano. 2010 Nov 23;4(11):6337-42. doi: 10.1021/nn101926g. Epub 2010 Oct 8.

Abstract

We demonstrate a controlled growth of nitrogen-doped graphene layers by liquid precursor based chemical vapor deposition (CVD) technique. Nitrogen-doped graphene was grown directly on Cu current collectors and studied for its reversible Li-ion intercalation properties. Reversible discharge capacity of N-doped graphene is almost double compared to pristine graphene due to the large number of surface defects induced due to N-doping. All the graphene films were characterized by Raman spectroscopy, transmission electron microscopy, and X-ray photoemission spectroscopy. Direct growth of active electrode material on current collector substrates makes this a feasible and efficient process for integration into current battery manufacture technology.

摘要

我们通过基于液体前驱体的化学气相沉积(CVD)技术展示了氮掺杂石墨烯层的可控生长。氮掺杂石墨烯直接在 Cu 集电器上生长,并研究了其可逆锂离子嵌入性能。与原始石墨烯相比,由于氮掺杂引起的大量表面缺陷,N 掺杂石墨烯的可逆放电容量几乎增加了一倍。所有石墨烯薄膜均通过拉曼光谱、透射电子显微镜和 X 射线光电子能谱进行了表征。活性电极材料直接在集电器衬底上生长,这使得该方法成为一种可行且高效的工艺,可以集成到当前的电池制造技术中。

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