Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch

doi:10.1126/science.abh1619

GSTDTAP > 气候变化

DOI	10.1126/science.abh1619
	Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch
	Quinn D. Gibson; Tianqi Zhao; Luke M. Daniels; Helen C. Walker; Ramzy Daou; Sylvie Hébert; Marco Zanella; Matthew S. Dyer; John B. Claridge; Ben Slater; Michael W. Gaultois; Furio Corà; Jonathan Alaria; Matthew J. Rosseinsky
	2021-08-27
发表期刊	Science
出版年	2021
英文摘要	Low thermal conductivity is important for barrier coatings, thermoelectrics, and other applications. Gibson et al. combined two complementary methods that manipulate internal interface properties to dramatically decrease the thermal conductivity of the inorganic material BiO2Cl2Se (see the Perspective by Kim and Cahill). The authors took advantage of both in-plane structural distortions and weak bonding layers to push the conductivity down to 0.1 watts per kelvin per meter, which is only four times that of air. The principles should be applicable to other systems and provide a method for developing crystals with extremely low thermal conductivity. Science , abh1619, this issue p. [1017][1]; see also abk1176, p. [963][2] The thermal conductivity of crystalline materials cannot be arbitrarily low, as the intrinsic limit depends on the phonon dispersion. We used complementary strategies to suppress the contribution of the longitudinal and transverse phonons to heat transport in layered materials that contain different types of intrinsic chemical interfaces. BiOCl and Bi2O2Se encapsulate these design principles for longitudinal and transverse modes, respectively, and the bulk superlattice material Bi4O4SeCl2 combines these effects by ordering both interface types within its unit cell to reach an extremely low thermal conductivity of 0.1 watts per kelvin per meter at room temperature along its stacking direction. This value comes within a factor of four of the thermal conductivity of air. We demonstrated that chemical control of the spatial arrangement of distinct interfaces can synergically modify vibrational modes to minimize thermal conductivity. [1]: /lookup/doi/10.1126/science.abh1619 [2]: /lookup/doi/10.1126/science.abk1176
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/336666
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Quinn D. Gibson,Tianqi Zhao,Luke M. Daniels,et al. Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch[J]. Science,2021.
APA	Quinn D. Gibson.,Tianqi Zhao.,Luke M. Daniels.,Helen C. Walker.,Ramzy Daou.,...&Matthew J. Rosseinsky.(2021).Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch.Science.
MLA	Quinn D. Gibson,et al."Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch".Science (2021).