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| Hauptverfasser: | , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2403.05951 |
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| _version_ | 1866916155268005888 |
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| author | Xu, Yuxuan Chen, Guo Du, Fei Li, Ming Wu, Liangfei Yao, Deyuan Ding, Junfeng Zeng, Zhi Lin, Haiqing Wang, Xianlong |
| author_facet | Xu, Yuxuan Chen, Guo Du, Fei Li, Ming Wu, Liangfei Yao, Deyuan Ding, Junfeng Zeng, Zhi Lin, Haiqing Wang, Xianlong |
| contents | Cubic gauche nitrogen (cg-N) has received wide attention due to its high energy density and environmental friendliness. However, existing synthesis methods for cg-N predominantly rely on the high-pressure techniques, or the utilization of nanoconfined effects using highly toxic and sensitive sodium azide as precursor, which significantly restrict the practical application of cg-N as high energy density materials (HDEM). Here, based on the first-principles simulations, we find that the adsorption of potassium on the cg-N surface exhibits superior stabilization compared to sodium. Then, we chose the safer potassium azide as raw material for synthesizing cg-N. Through plasma-enhanced chemical vapor deposition treatment, the free-standing cg-N was successfully synthesized without the need of high-pressure and nanoconfined effects. Importantly, it demonstrates excellent thermal stability up to 760 K, and then a rapid and intense thermal decomposition occurs, exhibiting typical behaviors of HDEM thermal decomposition. Our work has significantly promoted the practical application of cg-N as HDEM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05951 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Free-standing cubic gauche nitrogen stable at 760 K under ambient pressure Xu, Yuxuan Chen, Guo Du, Fei Li, Ming Wu, Liangfei Yao, Deyuan Ding, Junfeng Zeng, Zhi Lin, Haiqing Wang, Xianlong Materials Science Cubic gauche nitrogen (cg-N) has received wide attention due to its high energy density and environmental friendliness. However, existing synthesis methods for cg-N predominantly rely on the high-pressure techniques, or the utilization of nanoconfined effects using highly toxic and sensitive sodium azide as precursor, which significantly restrict the practical application of cg-N as high energy density materials (HDEM). Here, based on the first-principles simulations, we find that the adsorption of potassium on the cg-N surface exhibits superior stabilization compared to sodium. Then, we chose the safer potassium azide as raw material for synthesizing cg-N. Through plasma-enhanced chemical vapor deposition treatment, the free-standing cg-N was successfully synthesized without the need of high-pressure and nanoconfined effects. Importantly, it demonstrates excellent thermal stability up to 760 K, and then a rapid and intense thermal decomposition occurs, exhibiting typical behaviors of HDEM thermal decomposition. Our work has significantly promoted the practical application of cg-N as HDEM. |
| title | Free-standing cubic gauche nitrogen stable at 760 K under ambient pressure |
| topic | Materials Science |
| url | https://arxiv.org/abs/2403.05951 |