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首页> 外文期刊>Advanced energy materials >ZnFe2O4-C/LiFePO4-CNT: A Novel High-Power Lithium-Ion Battery with Excellent Cycling Performance
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ZnFe2O4-C/LiFePO4-CNT: A Novel High-Power Lithium-Ion Battery with Excellent Cycling Performance

机译：ZnFe2O4-C / LiFePO4-CNT：具有出色循环性能的新型大功率锂离子电池

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摘要

An innovative and environmentally friendly battery chemistry is proposed for high power applications. A carbon-coated ZnFe2O4 nanoparticle-based anode and a LiFePO4-multiwalled carbon nanotube-based cathode, both aqueous processed with Na-carboxymethyl cellulose, are combined, for the first time, in a Li-ion full cell with exceptional electrochemical performance. Such novel battery shows remarkable rate capabilities, delivering 50% of its nominal capacity at currents corresponding to ≈20C (with respect to the limiting cathode). Furthermore, the pre-lithiation of the negative electrode offers the possibility of tuning the cell potential and, therefore, achieving remarkable gravimetric energy and power density values of 202 Wh kg−1 and 3.72 W kg−1, respectively, in addition to grant a lithium reservoir. The high reversibility of the system enables sustaining more than 10 000 cycles at elevated C-rates (≈10C with respect to the LiFePO4 cathode), while retaining up to 85% of its initial capacity.
机译：针对高功率应用，提出了一种创新且环保的电池化学成分。碳涂层的ZnFe2O4纳米颗粒阳极和LiFePO4的多壁碳纳米管阴极，都经过Na-羧甲基纤维素水处理，首次在具有优异电化学性能的锂离子全电池中结合使用。这种新颖的电池具有出色的倍率能力，在相当于≈20C的电流（相对于极限阴极）下可提供其标称容量的50％。此外，负极的预锂化提供了调节电池电势的可能性，因此，除了获得了优异的电导率外，还获得了分别为202 Wh kg-1和3.72 W kg-1的显着重量能量和功率密度值。锂储层。该系统的高可逆性使它能够在提高的C速率（相对于LiFePO4阴极约为10C）下维持超过10,000个循环，同时保留高达其初始容量的85％。

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  • 来源
    《Advanced energy materials》 |2014年第10期|1-9|共9页
  • 作者

    Alberto Varzi; Dominic Bresser; Jan von Zamory; Franziska MÜller; Stefano Passerini;

  • 作者单位

    Institute of Physical Chemistry MEET Battery Research Center University of Muenster MÜnster Germany;

    Institute of Physical Chemistry MEET Battery Research Center University of Muenster MÜnster Germany;

    Institute of Physical Chemistry MEET Battery Research Center University of Muenster MÜnster Germany;

    Institute of Physical Chemistry MEET Battery Research Center University of Muenster MÜnster Germany;

    Institute of Physical Chemistry MEET Battery Research Center University of Muenster MÜnster Germany;

    Helmholtz Institute Ulm Ulm Germany;

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  • 正文语种 eng
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  • 关键词

    lithium-ion batteries; ZnFe2O4; LiFePO4; nanoparticles; carbon nanotubes;

    机译：锂离子电池ZnFe2O4LiFePO4纳米粒子碳纳米管;

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