Hexagonal boron nitride nanosheets doped pyroelectric ceramic composite for high-performance thermal energy harvesting
| Autor: | Qingping Wang, Shenglin Jiang, Christopher R. Bowen, R. W. C. Lewis, Wen Lei, Jun Chen, Ming-Yu Li, Haibo Zhang |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Pyroelectric ceramic 02 engineering and technology 010402 general chemistry Ceramic matrix composite 01 natural sciences Zirconate Thermal conductivity Materials Science(all) General Materials Science Ceramic Thermal energy harvesting SDG 7 - Affordable and Clean Energy Composite material Electrical and Electronic Engineering Renewable Energy Sustainability and the Environment Doping 021001 nanoscience & nanotechnology Titanate Hexagonal boron nitride 0104 chemical sciences Pyroelectricity visual_art Heat transfer visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Wang, Q, Bowen, C R, Lewis, R, Chen, J, Lei, W, Zhang, H, Li, M Y & Jiang, S 2019, ' Hexagonal boron nitride nanosheets doped pyroelectric ceramic composite for high-performance thermal energy harvesting ', Nano Energy, vol. 60, pp. 144-152 . https://doi.org/10.1016/j.nanoen.2019.03.037 |
| DOI: | 10.1016/j.nanoen.2019.03.037 |
| Popis: | Recently, recycling energy from wasted heat with pyroelectric materials has received significant attention. However, pyroelectric energy harvesters generally suffer from a low energy efficiency due to the low rates of heat transfer. Here, we report high-performance thermal energy harvesting using novel hybrid pyroelectric ceramics with greatly improved heat transfer and rate of temperature changes. This is achieved by evenly dispersing 0.1 wt% hexagonal boron nitride (hBN) nanosheets into a Pb[(Mn 1/3 Nb 2/3 ) 1/2 (Mn 1/3 Sb 2/3 ) 1/2 ] 0.04 (Zr 0.95 Ti 0.05 ) 0.96 O 3 (lead magnesium niobate-lead antimony-manganese-lead zirconate titanate: PMN-PMS-PZT) ceramic matrix. Due to the vibrations of whole chain and phonon scattering, heat transfer through the hybrid crystalline chain is more efficient than that of unfilled PMN-PMS-PZT. It is demonstrated that the harvested power was increased by up to 65.6%. This work paved an efficient and cost-effective way to largely improve the traditional pyroelectric ceramic for thermal energy harvesting. |
| Databáze: | OpenAIRE |
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