ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Rui Zhang,Hanli Zhang,Shaowen Dong,Yongfeng Yang,Jinjin Li
Polar regions hold significant potential for energy and resource development, but extreme temperatures and persistent ice pose challenges to commercial shipping, resource exploration, and scientific research. Here, a super-slippery oleogel ice-phobic coating (CP_U80@L-Ppy) with ultra-low temperature applicability is developed using expanded lamellar graphite networks and temperature-controlled deformed microspheres modified with linear polypyrrole. The ice adhesion strength at −30 °C is reduced to ≈ 3.76 kPa in the horizontal shear mode and remains below 10 kPa after 231 icing/shear detachment cycles. At ultra-low temperatures (−100–−70 °C), the ice adhesion strength stays below 30 kPa due to the vertical modulus mismatch between the ice and coating, along with the tangential modulus mismatch between the surface components. The coating also exhibits photo- and electro-responsive anti-icing/ice-phobic functionalities, broadening its potential for all-weather applications. Under “1 sun” irradiation at −30 °C, rapid defrosting (1 min) and ice detachment (2.8 min) are achieved. Additionally, electro-responsive defrosting and ice detachment periods of 1.4 and 2.6 min, respectively, are obtained using only two standard batteries in series (3.5 V) at −15 °C, demonstrating high energy efficiency. This work offers a promising strategy for developing efficient ice-phobic technologies suited to ultra-cold environments, with practical potential for polar applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Weiluo Guo,Runxi Wang,Lulu Liu,Lingzhi Xie,Yujun Feng,Hongyao Yin
The classical lyotropic liquid crystals (LLCs) prepared in pure water are not adapted to subzero temperatures. However, the fabrication of cryogenic LLCs is highly significant for gaining profound insights into self-assembly at extremely low temperatures. A proficient solution strategy, namely introducing alcohol antifreeze to water, faces a challenge in balancing frozen resistance and efficient self-assembly. Herein, we address this unmet challenge by selecting four alcohols with comparable structure to fabricate cryogenic LLCs system through the supramolecular self-assembly of a long-chain non-ionic surfactant. The freezing point, surfactant solubility, and self-assembly behavior at subzero temperatures were investigated. The alcohol antifreeze plays a significant role in depressing water freezing point and governing assembled microstructures. Both experimental and computational results revealed that alcohols bearing more hydroxyl groups are efficient to lower water freezing point while remain the capability to induce surfactant self-assembly. They can realize solvophobic balance and strong hydrogen-bond interactions. A simple approach based on Gordon parameter was established to evaluate the suitability as an anti-freezing medium for amphiphile self-assembly. Strikingly, a new LLCs system capable of withstanding the extremely low temperature of −80 °C was developed, which shows interestingly continuous phase transitions as temperature lowers to subzero. Overall, this study provides valuable insights into cryogenic supramolecular self-assembly, and offers a significant foundation and evaluation method for the selection of appropriate alcohol antifreeze for cryogenic self-assembly.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-16
·
IF 31.6
Bai Jie,Jia Jian Hui,Wang Yu,Yang Chun Cheng,Jiang Qing
Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at − 20 °C or lower. However, the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported. Herein, a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue, which is synthesized via a high temperature shock method. Such a hybrid shows an unprecedented rate performance (237.9 mAh g−1 at 2 A g−1) at − 60 °C, outperforming all reported SIB anode materials. Coupled with a Na3V2(PO4)3 cathode, the energy density of the full cell can reach to 181.9 Wh kg−1 at − 40 °C. Based on this work, a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.
研究领域:
材料科学
·
能源存储技术
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产品关联
DOI
PubMed
高影响因子
Energy & Environmental Science
·
2020
·Vol. 13
·期 4
·1205-1211
·
IF 30.289
Hucheng Song,Sheng Wang,Xiaoying Song,Jue Wang,Kezhu Jiang,Shihua Huang,Min Han,Jun Xu,Ping He,Kunji Chen,Haoshen Zhou
We propose an innovative solar photothemal battery technology to develop all-solid-state lithium–air batteries operating at ultra-low temperatures where a plasmonic air electrode can efficently harvest solar energy and convert it into heat, enabling efficient charge storage and transmission in electrolyte/electrode materials. Such batteries demonstrate a high discharge capacity (∼3600 mA h g−1) at −73 °C and record-cycle life both at −73 °C and room temperature.
研究领域:
材料科学
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能源技术
·
纳米科技
✓ 已验证
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Ruyu Bai,Haibo Jiang,Minxin Wang,Geyuan Jiang,Gaojin Lyu,Dawei Zhao
Ionogels consist of polymers and ions have emerged as promising application in flexible electronic devices. However, challenges remain in achieving the mechanical properties and low-temperature tolerance of ionogels. Here, a cellulose ionogel is reported by triggering the mechano-induced alignment of cellulose molecular chains and incorporating Ca 2+ complexation interactions. This cellulose ionogel presents outstanding mechanical properties and ionic conductivity, featuring a tensile strength of 6.84 MPa, an elastic modulus surpassing 100 MPa, and an ionic conductivity of 31.7 mS·cm −1 . Furthermore, the Ca 2+ complexation networks provide the cellulose ionogel with remarkable freezing resistance, allowing it to maintain flexibility even at temperatures as low as −196 °C, while the assembled electronic skin displays reliable sensing performance. The combination of robust mechanical strength, high ionic conductivity, biocompatibility, and extreme temperature tolerance underscores the potential applications of this cellulose ionogel, ensuring the stable operation of flexible electronic devices in highly challenging environments.
研究领域:
材料科学
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柔性电子
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）