五氧化二铌
锂(药物)
纳米材料
材料科学
电极
电化学
透射电子显微镜
化学工程
离子
扩散
热液循环
扫描电子显微镜
水平扫描速率
纳米技术
电池(电)
分析化学(期刊)
铌
化学
复合材料
冶金
色谱法
物理化学
量子力学
医学
功率(物理)
内分泌学
有机化学
工程类
物理
循环伏安法
热力学
作者
Mechthild Lübke,Afriyanti Sumboja,I. Johnson,Dan J. L. Brett,Paul R. Shearing,Zhaolin Liu,Jawwad A. Darr
标识
DOI:10.1016/j.electacta.2016.01.226
摘要
Nano-sized, semi-crystalline niobium pentoxide (Nb2O5) was synthesized in a single step via a continuous hydrothermal process. The nanomaterial was characterized using a range of analytical techniques including powder X-ray diffraction and transmission electron microscopy. The “as-prepared” Nb2O5 nanomaterial was investigated as negative electrode for a lithium-ion battery and was shown to be stable during electrochemical cycling (98.6 % capacity retention after 800 cycles) and showed promising high rate performance, with a specific capacity of 43 mAh g−1 at an applied current of 10,000 mA g−1 (in the wide potential range of 0.05 to 3 V vs Li/Li+). Scan rate tests were used to investigate the proportion of stored charge from diffusion-limited processes and that from surface effects, which showed that at higher currents, charge storage from the latter was dominant.
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