| NMAP夹层抑制锂硫电池穿梭效应 |
| NMAP Interlayer for Inhibiting Shuttle Effect of Lithium-Sulfur Battery |
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| 摘要: 利用水热合成法制备纳米NiO与多壁碳纳米管（MWCNTs）以及芳纶纸（AP）制备出一种新型复合夹层（NMAP）。NMAP夹层具有三维多孔结构，不但减小了活性物质的损失，还可以捕获可溶性多硫化物；NMAP夹层具有较强的化学吸附聚硫化物的能力。利用透射电子显微镜（TEM）、扫描电镜（SEM）、X射线衍射（XRD）等对复合夹层进行结构和性能的表征。电化学测试结果表明，NMAP夹层高性能锂硫电池在0.05C倍率下首次放电比容量达到1 437 mAh·g-1，活性物质的利用率高达85.8%；在4C大倍率下放电比容量仍然达到668 mAh·g-1，且库伦效率仍然保持在99.1%；显示出良好的倍率和循环性能。 |
| 关键词: 锂硫电池 穿梭效应 锂多硫化物 碳纳米管 夹层 |
| 基金项目: 江西省科技厅（No.20142BBE50071）和江西省教育厅（No.KJLD13006）资助。 |
| Abstract: Nano-NiO was prepared by hydrothermal synthesis and cross-linked with multi-walled carbon nanotubes (MWCNTs) and aramid paper (AP) to form a novel composite interlayer (NMAP). The NMAP interlayer has a three-dimensional porous structure, which not only reduces the loss of active materials, but also captures soluble polysulfides; NMAP material has strong chemical adsorption capacity for adsorbing polysulfide. The morphology and structure of the composite interlayer were observed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD). The electrochemical test results showed that the first discharge capacity of electrode with NMAP interlayer reached 1 437 mAh·g-1 at a rate of 0.05C, and the utilization rate of active material was as high as 85.8%. The specific discharge capacity still reached 668 mAh·g-1 at 4C, and the coulomb efficiency remained at 99.1%,showing excellent magnification and cycling performance. |
| Keywords: lithium-sulfur batteries shuttle effect lithium polysulfides carbon nanotube interlayer |
| 投稿时间：2019-09-12 修订日期：2020-02-26 |
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| 李锐,孙晓刚,邹婧怡,何强.NMAP夹层抑制锂硫电池穿梭效应[J].无机化学学报,2020,36(4):673-680. |
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