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首页> 外文期刊>Advanced Functional Materials >A Self-Standing and Flexible Electrode of Li_4Ti_5O_(12) Nanosheets with a N-Doped Carbon Coating for High Rate Lithium Ion Batteries
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A Self-Standing and Flexible Electrode of Li_4Ti_5O_(12) Nanosheets with a N-Doped Carbon Coating for High Rate Lithium Ion Batteries

机译：具有高浓度锂离子电池的N掺杂碳涂层的Li_4Ti_5O_（12）纳米片的自固定和柔性电极

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摘要

Flexible energy-storage devices have attracted growing attention with the fast development of bendable electronic systems. Thus, the search for reliable electrodes with both high mechanical flexibility and excellent electron and lithium-ion conductivity has become an urgent task. Carbon-coated nanostructures of Li_4Ti_5O_(12) (LTO) have important applications in high-performance lithium ion batteries (LIBs). However, these materials still need to be mixed with a binder and carbon black and pressed onto metal substrates or, alternatively, by be deposited onto a conductive substrate before they are assembled into batteries, which makes the batteries less flexible and have a low energy density. Herein, a simple and scalable process to fabricate LTO nanosheets with a N-doped carbon coating is reported. This can be assembled into a film which can be used as a binder-free and flexible electrode for LIBs that does not require any current collectors. Such a flexible electrode has a long life. More significantly, it exhibits an excellent rate capability due to the thin carbon coating and porous nanosheet structures, which produces a highly conductive pathway for electrons and fast transport channels for lithium ions.
机译：随着可弯曲电子系统的快速发展，柔性储能设备已引起越来越多的关注。因此，寻找兼具高机械柔韧性和优异的电子及锂离子传导性的可靠电极已成为当务之急。 Li_4Ti_5O_（12）（LTO）的碳包覆纳米结构在高性能锂离子电池（LIB）中具有重要的应用。但是，这些材料仍需要与粘合剂和炭黑混合并压在金属基材上，或者在将它们组装成电池之前通过沉积在导电基材上，这会使电池柔韧性降低且能量密度低。在本文中，报道了一种简单且可扩展的工艺来制造具有N掺杂碳涂层的LTO纳米片。可以将其组装成膜，该膜可用作不需要任何集电器的LIB的无粘合剂柔性电极。这样的柔性电极寿命长。更重要的是，由于具有薄的碳涂层和多孔的纳米片结构，它具有出色的速率能力，从而为电子提供了高传导性的通道，为锂离子提供了快速的传输通道。

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  • 来源
    《Advanced Functional Materials》 |2013年第43期|5429-5435|共7页
  • 作者

    Na Li; Guangmin Zhou; Feng Li; Lei Wen; Hui-Ming Cheng;

  • 作者单位

    Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD, Shenyang 110016, China,Department of Materials Science &. Engineering School of Chemistry and Materials Science University of Science and Technology of China Hefei 230026, China;

    Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD, Shenyang 110016, China;

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