摘要
Nitrogen doping is one of the resultful means to modify electrode materials to get improved storage capacity. However, scientific problem of the effect of single pyridine-N on capacity has not yet been discovered. This paper developed a new way for precise preparation of pyridinic-N doped carbon materials. Different N/C ratios of graphdiyne were obtained by accurate adjustment and superior lithium and sodium storage capacities were realized. At 0.05 A g-1, for Li and Na ions batteries with the asprepared samples as electrodes, the maximum specific capacities could reach up to 1812 and 680 mAh g-1, respectively. Relationship between specific capacity and nitrogen content was not positively correlated and the maximum value occurs when monomers ratio was 1:1, suggested that besides N/C ratios, morphologies, interlayer spacing, and wettability also take effect on the behavior of battery performances. This investigation makes a new insight and provides guidance to heteroatom doping in energy storage.
源语言 | 英语 |
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文章编号 | 025032 |
期刊 | 2D Materials |
卷 | 7 |
期 | 2 |
DOI | |
出版状态 | 已出版 - 2020 |
已对外发布 | 是 |