Precise and controllable N/C ratio in graphdiyne for superior Li and Na ions storage capacities

Juan Gao, Ning Wang, Jianjiang He, Ze Yang, Changshui Huang

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24 引用 (Scopus)

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
文章编号025032
期刊2D Materials
7
2
DOI
出版状态已出版 - 2020
已对外发布

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Gao, J., Wang, N., He, J., Yang, Z., & Huang, C. (2020). Precise and controllable N/C ratio in graphdiyne for superior Li and Na ions storage capacities. 2D Materials, 7(2), 文章 025032. https://doi.org/10.1088/2053-1583/ab70eb