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首页> 外文期刊>RSC Advances >High-rate and long-life of Li-ion batteries using reduced graphene oxide/Co3O4 as anode materials
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High-rate and long-life of Li-ion batteries using reduced graphene oxide/Co3O4 as anode materials

机译：使用还原的石墨烯氧化物/ CO3O4作为阳极材料的锂离子电池的高速和长寿命

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Metal oxides as Li-ion battery anodes have received a great deal of attention because they offer a higher specific capacity than state-of-the-art commercial graphite. However, a large volume change and severe particle aggregation during battery operation have greatly impeded their practical application. Herein, we report a facile one-step microwave-assisted route for growing Co _(3) O _(4) nanoparticles on reduced graphene oxide that results in a high performance anode material for Li-ion batteries. The lithium battery performances of several systems with varied reduced graphene oxide contents were studied. The optimized composites exhibit a high surface area of 222 m ~(2) g ~(?1) , and a wide pore size distribution of 1.4 to 300 nm. More importantly, the Li-ion battery shows a high capacity of ～1300 mA h g ~(?1) at a high rate of 1C (1C = 890 mA g ~(?1) ), long life of over 600 cycles, good capacity retention, and excellent rate capability. The synthesis process is simple, energy efficient, and time-saving, providing a new path in designing high-performance electrodes for Li-ion batteries.
机译：金属氧化物作为锂离子电池阳极的收到大量的关注，因为它们提供比最先进的商业石墨更高的特定容量。然而，电池操作期间的大体积变化和严重的颗粒聚集极大地阻碍了它们的实际应用。在此，我们报告了用于在还原的氧化石墨烯氧化物上生长CO _（3）Oα（4）纳米颗粒的容易一步微波辅助途径，这导致锂离子电池的高性能阳极材料。研究了几种具有变化的石墨烯含量的锂电池性能。优化的复合材料表现出222m〜（2）g〜（α1）的高表面积，宽孔径分布为1.4至300nm。更重要的是，锂离子电池高容量为〜1300 mA hg〜（α1），高速率为1c（1c = 890 ma g〜（Δ1）），长寿命超过600周期，容量良好保留和优异的速度能力。合成过程简单，节能和节省时间，在设计锂离子电池的高性能电极方面提供了新的路径。

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