Journal of Materials Chemistry C
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2023
·Vol. 11
·期 42
·14671-14679
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IF 6.4
Derui Kong,Jizhen Zhang,Zihao Hou,Xu Zhao,Ting Ren,Chuang Liu,Jinlong Tao,Na Kong,Yumei Gong
In response to the increasingly diverse demands for clothing, self-cooling functional composite fibers composed of boron nitride (BN) nanosheets and aramid nanofibers (ANFs) were produced by using a scalable wet spinning technique. In this technique, the thermal conductive BN nanosheets were aligned along the fiber axis and acted as internal thermal transfer paths, while the ANFs completely wrapped BN sheets around and built a 3D interconnected network, providing excellent mechanical strength to the fibers. The thermal conductivity was significantly improved along the composite fiber axis compared to that of pure ANFs. The thermal imaging study of the fabrics knitted using composite fibers showed prominent heat transfer properties along the fiber axis. This study demonstrates that controlling the alignment of BN nanosheets along the fiber axis plays an important role in manipulating the thermal conductivities of fabrics and could contribute to the generation of self-cooling clothes.
研究领域:
材料科学
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纺织工程
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热管理技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Junhai Xiao,Fucai Wu,Chunyan Hu,Zhijia Zhu,Baojiang Liu
In agricultural production, the substantial consumption of water and electricity resources is an urgent issue that needs to be addressed.In this work, we address this challenge by repurposing discarded cotton fabric and employing a unidirectional ice templating freezing technique to construct a cellulose hydrophilic aerogel featuring a biomimetic structure with unidirectional vertical channels, hereafter referred to as UVC-aerogel. This innovative material facilitates the conversion of low-grade waste heat (LGWH) into both water resources and electrical energy.The UVC aerogel exhibits remarkable evaporation performance, achieving an efficient evaporation rate of 9.18 kgm −2 h −1 , while demonstrating significant resistance to salt accumulation. Moreover, the evaporation effect synergistically enhances its thermoelectric power generation capacity. Through integration with a self-cooling open thermoelectric battery system, the UVC aerogel capitalizes on the concentration gradient formed within the evaporation system to augment the Seebeck coefficient (6.86 mVK −1 ) and power density (0.015 Wm −2 K −2 ).This work present a green and sustainable solution to the water and electricity challenges encountered in agriculture, carrying substantial implications for both environmental conservation and agricultural advancement.
研究领域:
材料科学
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农业工程
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能源技术
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产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2018
·Vol. 2
·期 6
·1323-1331
·
IF 0
Lihua Jiang,Qingsong Wang,Ke Li,Ping Ping,Lin Jiang,Jinhua Sun
The rational design of flame-retardant electrolytes is essential for improving the safety of lithium ion batteries. Cooling is the key to curbing thermal runaway and compatibility is the basis to ensure electrochemical performance. Here we design a composite electrolyte with a double safety protection mechanism with self-cooling and flame-retardant effects simultaneously. N,N-Dimethylacetamide (DMAC) as a Lewis base can improve the thermal stability and perfluoro-2-methyl-3-pentanone (PFMP) with a self-cooling function can act as an internal micro-fire-extinguisher. Acceptable electrochemical performance is ensured via the introduction of a fluorocarbon surfactant (FS) that can improve the interface compatibility. This composite electrolyte is a good alternative for lithium ion batteries as it presents beneficial properties both in electrochemical performance and thermal stability.
研究领域:
电化学
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材料科学
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能源存储
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电池安全
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功能材料
✓ 已验证
DOI
Journal of Bionic Engineering
·
2024
·
IF 4.9
Fu Huide,Wang Ben,He Rui,Yang Yongpu,Li Hongyuan,Guo Zhiguang
Photovoltaic (PV) power generation is highly regarded for its capability to transform solar energy into electrical power. However, in real-world applications, PV modules are prone to issues such as increased self-heating and surface dust accumulation, which contribute to a reduction in photoelectric conversion efficiency. Furthermore, elevated temperatures can adversely affect the components’ operational longevity. To augment the efficiency and extend the lifespan of PV modules, it is crucial to implement cooling strategies and periodic surface dust removal. In this research, we introduce a composite PV module design that amalgamates a hygroscopic hydrogel with self-cleaning attributes. The design incorporates a superhydrophobic polydimethylsiloxane (PDMS) film as its exposed surface layer and employs a PAM-CaCl 2 -SiC hygroscopic hydrogel for rear cooling. This arrangement is intended to facilitate efficient surface self-cleaning and passive cooling of the composite PV module. Experimental studies were conducted to evaluate the performance of this innovative composite PV module design, and the results showed that the composite PV panel had an increase of about 1.39% in power generation compared to an ordinary PV panel in the spring of Shenzhen, China.
研究领域:
可再生能源
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材料科学
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环境工程
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能源工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Da Zu,Zhanpeng Zhang,Dongliang Shan,Wenjun Cao,Yunya Liu
The thermal failure bottleneck in high-power polymer capacitors severely limits their energy storage performance breakthroughs. Composite materials combining excellent thermal management capabilities with high energy storage density represent an effective solution to this problem. This study proposes an integrated energy storage-thermal management design strategy: using a relaxor ferroelectric polymer P(VDF-TrFE-CFE) as the matrix and incorporating Ba 0.6 Sr 0.4 TiO 3 (BST) nanoparticles with varying weight fractions (0–23.08 wt.%) to construct high-performance polymer-based nanocomposites. By synergistically regulating the interfacial polarization effect and polarization entropy change, dual breakthroughs in electrocaloric (EC) cooling and energy storage performance are achieved. This study employs infrared thermal imaging technology to directly measure the EC response of composite films. Experimental results show that when the BST weight fraction is 16.67 wt.%, the composite achieves optimal overall performance: under an electric field of 110 MV m −1 , the recoverable energy density W rec reaches 4.26 J cm −3 , which is a 20.34% improvement over the pure polymer, with the η of 70.17%; under an electric field of 100 MV m −1 , the EC temperature change reaches 5 °C, representing a 32.63% enhancement compared to the pure polymer. Therefore, this work achieves a synergistic enhancement of dielectric energy storage and EC cooling performance within a single material system.
研究领域:
材料科学
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能量存储
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介电材料
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热管理
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铁电聚合物
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纳米复合材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）