Carbon/ZnO Nanorod Array Electrode with Significantly Improved Lithium Storage Capability.
Carbon/ZnO Nanorod Array Electrode with Significantly Improved Lithium Storage Capability.
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DOI：
10.1021/jp9034612
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发表时间：
2009-03
影响因子：
3.7
通讯作者：
Jinping Liu;Yuanyuan Li;Ruimin Ding;Jian Jiang;Yingying Hu;X. Ji;Q. Chi;Zhihong Zhu;Xintang Huang
中科院分区：
文献类型：
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作者：
Jinping Liu;Yuanyuan Li;Ruimin Ding;Jian Jiang;Yingying Hu;X. Ji;Q. Chi;Zhihong Zhu;Xintang Huang
通过在氩气中500°C下对预先吸附在氧化锌阵列上的葡萄糖进行简单碳化，在镍基底上大面积制备了碳/氧化锌纳米棒阵列。证实了在氧化锌纳米棒表面均匀包覆了平均厚度为6纳米的碳壳。这种新型阵列结构兼具碳的电活性以及导电基底上阵列结构的电化学优势。当用作锂离子电池的阳极时，它在循环稳定性和倍率性能方面表现出显著提高的性能。所观察到的锂存储能力在迄今为止报道的基于氧化锌的阳极中处于最佳之列。我们认为这种新型碳包覆方法具有普遍性，并且可以扩展到其他金属氧化物纳米阵列电极。
Carbon/ZnO nanorod arrays on nickel substrate have been fabricated over a large area by the simple carbonization of preadsorbed glucose on ZnO arrays at 500 °C in argon gas. The uniform coating of average 6 nm carbon shell on ZnO nanorod surface is confirmed. The novel array architecture possesses both the electroactivity of carbon and the electrochemical advantages of array structure on conductive substrate. When used as anode for Li ion batteries, it displays significantly improved performance in terms of cycling stability and rate capability. The observed lithium storage ability ranges among the best reported to date for ZnO-based anode. We believe that the novel carbon-coating route is general and can be extendable to other metal oxide nanoarray electrodes.