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A Mesoporous Iron-Based Fluoride Cathode of Tunnel Structure for Rechargeable Lithium Batteries

机译：可充电锂电池隧道结构的介孔铁基氟化物阴极

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摘要

A fluoride-based cathode (FeF_·0.33H_2O) for lithium batteries, the synthesis of which has been reported recently (C. L. Li et al. Adv. Mater. 2010,22,3650), is described in terms of structure, morphology, and performance. A self-assembled mesoporous morphology connected with a high specific surface area is obtained through the soft template role of the ionic liquid. The fluoride exhibits a one-dimensional tunnel structure produced by continuous hexagonal cavities, in which hydration water molecules are located. The high Li-intercalation activity of carbon-free FeF_3·0.33H_2O is expected to be associated with various factors, including electrolyte-infiltratable mesoporosity, wide Li~+-insertable channels, and medium conductivities. A single solid-solution reaction mechanism is indicated by potentiostatic intermittent titration technique and ex situ X-ray diffraction at different reactive potentials.
机译：关于锂电池的基于氟化物的阴极（FeF_·0.33H_2O），其结构，形态和结构均已在最近报道（CL Li等，Adv。Mater。2010,22,3650）。性能。通过离子液体的软模板作用获得了具有高比表面积的自组装介孔形态。氟化物显示出由连续六边形腔产生的一维隧道结构，水化水分子位于其中。预计无碳FeF_3·0.33H_2O的高Li嵌入活性与多种因素有关，包括电解质可渗透的介孔率，Li〜+不可渗透的通道宽和中等电导率。恒电位间歇滴定技术和在不同反应电势下的异位X射线衍射表明了单一的固溶反应机理。

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  • 来源
    《Advanced Functional Materials》 |2011年第8期|p.1391-1397|共7页
  • 作者

    Chilin Li; Lin Gu; Jianwei Tong; Susumu Tsukimoto; Joachim Maier;

  • 作者单位

    Max Planck Institute for Solid State Research HeisenbergstraSe 1, D-70569 Stuttgart, Germany;

    WPI Advanced Institue for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Max Planck Institute for Solid State Research HeisenbergstraSe 1, D-70569 Stuttgart, Germany;

    WPI Advanced Institue for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Max Planck Institute for Solid State Research HeisenbergstraSe 1, D-70569 Stuttgart, Germany;

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