Lead-free (Ag,K)NbO3 materials for high-performance explosive energy conversion
文献类型：期刊论文
| 作者 | Liu, Z; Lu, T; Xue, F; Nie, HC; Withers, R; Studer, A; Kremer, F; Narayanan, N; Dong, XL; Yu, DH |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2020-05-01 |
| 期号 | 21 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.aba0367 |
| 文献子类 | Article |
| 英文摘要 | Explosive energy conversion materials with extremely rapid response times have broad and growing applications in energy, medical, defense, and mining areas. Research into the underlying mechanisms and the search for new candidate materials in this field are so limited that environment-unfriendly Pb(Zr,Ti)O-3 still dominates after half a century. Here, we report the discovery of a previously undiscovered, lead-free (Ag0.935K0.065)NbO3 material, which possesses a record-high energy storage density of 5.401 J/g, enabling a pulse current similar to 22 A within 1.8 microseconds. It also exhibits excellent temperature stability up to 150 degrees C. Various in situ experimental and theoretical investigations reveal the mechanism underlying this explosive energy conversion can be attributed to a pressure-induced octahedral tilt change from a(-)a(-)c(+) to a(-)a(-)c(-)/a(-)a(-)c(+), in accordance with an irreversible pressure-driven ferroelectric-antiferroelectric phase transition. This work provides a high performance alternative to Pb(Zr,Ti)O-3 and also guidance for the further development of new materials and devices for explosive energy conversion. |
| WOS关键词 | ROOM-TEMPERATURE ; DENSITY ; NIOBATE ; PHASE |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28088]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Liu, Z,Lu, T,Xue, F,et al. Lead-free (Ag,K)NbO3 materials for high-performance explosive energy conversion[J]. SCIENCE ADVANCES,2020(21). |
| APA | Liu, Z.,Lu, T.,Xue, F.,Nie, HC.,Withers, R.,...&Wang, GS.(2020).Lead-free (Ag,K)NbO3 materials for high-performance explosive energy conversion.SCIENCE ADVANCES(21). |
| MLA | Liu, Z,et al."Lead-free (Ag,K)NbO3 materials for high-performance explosive energy conversion".SCIENCE ADVANCES .21(2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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