ACS Applied Materials & Interfaces最新文献

Boosting the Thermoelectric Properties of Ge0.94Sb0.06Te via Trojan Doping for High Output Power 通过特洛伊掺杂提升 Ge0.94Sb0.06Te 的热电特性以获得高输出功率

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-13 DOI: 10.1021/acsami.4c13775

Yuanxin Jiang, Yu Zhang, Xiaoqiang Wang, LeLe Chen, Jiye Zhang, Yusong Du, Weiwei Xing, Jing-Tai Zhao, Shuankui Li, Kai Guo

{"title":"Boosting the Thermoelectric Properties of Ge0.94Sb0.06Te via Trojan Doping for High Output Power","authors":"Yuanxin Jiang, Yu Zhang, Xiaoqiang Wang, LeLe Chen, Jiye Zhang, Yusong Du, Weiwei Xing, Jing-Tai Zhao, Shuankui Li, Kai Guo","doi":"10.1021/acsami.4c13775","DOIUrl":"https://doi.org/10.1021/acsami.4c13775","url":null,"abstract":"GeTe stands as a promising lead-free medium-temperature thermoelectric material that has garnered considerable attention in recent years. Suppressing carrier concentration by aliovalent doping in GeTe-based thermoelectrics is the most common optimization strategy due to the intrinsically high Ge vacancy concentration. However, it inevitably results in a significant deterioration of carrier mobility, which limits further improvement of the zT value. Thus, an effective Trojan doping strategy via CuScTe2 alloying is utilized to optimize carrier concentration without intensifying charge carrier scattering by increasing the solubility of Sc in the GeTe system. Because of the high doping efficiency of the Trojan doping strategy, optimized hole concentration and high mobility are obtained. Furthermore, CuScTe2 alloying leads to band convergence in GeTe, increasing the effective mass m* in (Ge0.84Sb0.06Te0.9)(CuScTe2)0.05 and thus significantly improving the Seebeck coefficient throughout the measured temperature range. Meanwhile, the achievement of the ultralow lattice thermal conductivity (κL ∼ 0.34 W m–1 K–1) at 623 K is attributed to dense point defects with mass/strain-field fluctuations. Ultimately, the (Ge0.84Sb0.06Te0.9)(CuScTe2)0.05 sample exhibits a desirable thermoelectric performance of zTmax ∼ 1.81 at 623 K and zTave ∼ 1.01 between 300 and 723 K. This study showcases an effective doping strategy for enhancing the thermoelectric properties of GeTe-based materials by decoupling phonon and carrier scattering.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning Crystalline Preferred Orientation of SnSe2 Anode by Co-doping to Enhance Pseudocapacitive Behaviors for High-Performance Sodium Storage 通过共掺杂调整 SnSe2 阳极的晶体优选取向，增强高性能钠存储的伪电容行为

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-13 DOI: 10.1021/acsami.4c13110

Dejian Liu, Jiarui Zhong, Zhiyi Cai, Zijian Zhan, Cheng Zheng, Shaoming Huang

{"title":"Tuning Crystalline Preferred Orientation of SnSe2 Anode by Co-doping to Enhance Pseudocapacitive Behaviors for High-Performance Sodium Storage","authors":"Dejian Liu, Jiarui Zhong, Zhiyi Cai, Zijian Zhan, Cheng Zheng, Shaoming Huang","doi":"10.1021/acsami.4c13110","DOIUrl":"https://doi.org/10.1021/acsami.4c13110","url":null,"abstract":"SnSe2 has attracted great attention due to its unique 2D-layered structure, which makes it capable of sodium ion storage and higher theoretical capacities compared to traditional anode materials like hard carbon for sodium ion batteries (SIBs). However, SnSe2-based materials will cause structural damage due to volume expansion during ion storage, leading to poor cycle stability and rate capacity. In this work, Co-doped SnSe2 (Co-SnSe2) with preferred crystal orientation was fabricated by a one-step solvothermal method. It has been found that after doping Co, the lower (001) crystal plane located at 14.4° replaced the higher (101) plane at 30.7° as the dominant crystal plane in Co-SnSe2, which significantly promoted ion diffusion and enhanced the pseudocapacitance behavior. Therefore, this Co-SnSe2 anode achieves a high capacity of 504 mAh g–1 at 1 A g–1, and a high-rate cycle stability, delivering a reversible capacity of 302 mAh g–1 at 5 A g–1 after 1800 cycles with a retained capacity rate of 94%. Moreover, the Na3V2(PO4)3||Co-SnSe2 full cell exhibits a stable cycle performance of over 300 cycles at 1 A g–1, demonstrating great promise for practical applications. This work provides an effective reference for the exploration of high-performance sodium storage anode materials.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copper Polypropylene Metal Plastic Composite Copper Foil: Future-Proof Anode Current Collector Solution for Lithium-Ion Batteries with High Energy Density 铜聚丙烯金属塑料复合铜箔：面向未来的高能量密度锂离子电池阳极集流解决方案

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c08053

Jing Niu, Xianli Huang, Hui Yang, Datuan Li, Xingxu Gao, Ling Yang, Qian Chen, Ao Sun, Kejun Zheng, Tao Wang, Jianping He

{"title":"Copper Polypropylene Metal Plastic Composite Copper Foil: Future-Proof Anode Current Collector Solution for Lithium-Ion Batteries with High Energy Density","authors":"Jing Niu, Xianli Huang, Hui Yang, Datuan Li, Xingxu Gao, Ling Yang, Qian Chen, Ao Sun, Kejun Zheng, Tao Wang, Jianping He","doi":"10.1021/acsami.4c08053","DOIUrl":"https://doi.org/10.1021/acsami.4c08053","url":null,"abstract":"Composite copper foil is considered to be the future-proof anode current collector solution for lithium-ion batteries (LIBs) with high energy density, for its light weight and low cost. Polypropylene (PP) film is widely used as the support layer of composite copper foil current collectors (CCs) due to its excellent mechanical properties and chemical stability. However, the interface adhesion between the PP layer and the copper layer is weak, due to the significant difference in surface energy. In this study, we prepared a hydrophilic PP film by air plasma treatment. After magnetron sputtering and electroplating, the composite copper foil (PP@Cu-1) with strong adhesion was then successfully prepared. In the T-peel test, for PP@Cu-1, the pull required to separate PP from the copper layer is approximately 7 times that of PP@Cu-0. The PP@Cu-1 composite copper foil exhibits excellent electrochemical properties when applied to LIBs. As an anode CC material, it could be a favorable competitor to conventional commercial Bare Cu and holds broad prospects for application in high-energy-density LIBs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Full-Visible-Spectrum White LEDs Enabled by a Blue-Light-Excitable Cyan Phosphor 利用可激发蓝光的青色荧光粉实现全可见光谱白光 LED

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c12244

Xiaoyuan Chen, Xiaoyong Huang

{"title":"Full-Visible-Spectrum White LEDs Enabled by a Blue-Light-Excitable Cyan Phosphor","authors":"Xiaoyuan Chen, Xiaoyong Huang","doi":"10.1021/acsami.4c12244","DOIUrl":"https://doi.org/10.1021/acsami.4c12244","url":null,"abstract":"Efficient blue-light-excitable broadband cyan-emitting phosphors may yield full-visible-spectrum white light-emitting diodes (WLEDs) with ultrahigh color rendering (Ra > 95). However, this requires closing the “cyan gap” in the 480–520 nm region of the visible spectrum, which is challenging. Herein, a well-performed cyan-emitting garnet phosphor Ca2LuAlGa2Si2O12:Ce3+ (CLAGSO:Ce3+) is reported. Under 430 nm excitation, the optimal CLAGSO:5%Ce3+ compound exhibits a broadband cyan emission (peak, 496 nm; bandwidth, 102 nm) with a high internal quantum efficiency of 85.6% and an excellent thermal resistance performance (69.1% at 423 K). Importantly, this as-prepared cyan-emitting phosphor provides sufficient cyan emission and enables filling the well-known so-called “cyan gap” between the blue LED chip and the commercial Y3Al5O12:Ce3+ (YAG:Ce3+) yellow phosphor. Impressively, a WLED device fabricated with the optimal CLAGSO:5%Ce3+ sample shows a low correlated color temperature (4053 K) and an ultrahigh color rendering index (Ra = 96.6), as well as an excellent luminous efficacy (74.09 lm W–1). These results highlight the importance of blue-excited broadband cyan-emitting phosphors in closing the cyan gap and enabling human-centric full-visible-spectrum warm WLED devices for high-quality solid-state lighting.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning Dielectric Properties with Nanofiller Dimensionality in Polymer Nanocomposites 用聚合物纳米复合材料中的纳米填料尺寸调节介电性能

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c16329

Farzana Hasan Likhi, Maninderjeet Singh, Hitesh Ravi Potdukhe, Pulickel M. Ajayan, Muhammad M. Rahman, Alamgir Karim

{"title":"Tuning Dielectric Properties with Nanofiller Dimensionality in Polymer Nanocomposites","authors":"Farzana Hasan Likhi, Maninderjeet Singh, Hitesh Ravi Potdukhe, Pulickel M. Ajayan, Muhammad M. Rahman, Alamgir Karim","doi":"10.1021/acsami.4c16329","DOIUrl":"https://doi.org/10.1021/acsami.4c16329","url":null,"abstract":"Polymer nanocomposites hold great potential as dielectrics for energy storage devices and flexible electronics. The structural architecture of the nanofillers is expected to play a crucial role in the fundamental mechanisms governing the electrical breakdown and dielectric properties of the nanocomposites. However, the effect of nanofiller structure and dimensionality on these properties has not been studied thoroughly to date. This study explores the critical relationship between nanofiller dimensionality and dielectric properties in polymer nanocomposites. We fabricated polyvinylidene fluoride (PVDF) nanocomposites by incorporating a range of carbon-based nanofillers separately, including zero-dimensional (0D) carbon black (CB), one-dimensional (1D) multiwalled carbon nanotubes (MWCNT), 1D single-walled carbon nanotubes (SWCNT), two-dimensional (2D) reduced graphene oxide (rGO), and three-dimensional (3D) graphite. The frequency-dependent (1 kHz to 1 MHz) dielectric permittivity (k) of the nanocomposites at the same concentration of nanofillers demonstrated a hierarchical order, with MWCNT showing the highest permittivity (∼400%), succeeded by rGO (∼360%), CB (∼290%), SWCNT (∼230%), and graphite (∼70%), respectively. The temperature-dependent (50–150 °C) dielectric spectroscopy revealed high k with increasing temperature due to the enhanced dipole movement. However, their dielectric breakdown strength and energy densities were not correlated to k and exhibited the following order: SWCNT > MWCNT > CB > rGO > graphite. As the electrical breakdown depends upon the nanocomposites’ mechanical strength, we correlated the mechanical properties with the nanofiller dimensionality, and Young’s modulus followed the 1D ≈ 2D > 0D > 3D order. These findings will provide fundamental insights into designing tunable, conducive nanofiller-based nanocomposites in next-generation flexible electronics and capacitive energy storage devices.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Selenization Condition for Efficiency CIGSe Solar Cells Based on Postselenization of CuInGa Precursors 基于 CuInGa 前驱体后硒化的高效 CIGSe 太阳能电池硒化条件优化

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c08578

Hanpeng Wang, Daming Zhuang, Ming Zhao, Hao Tong, Mengyao Jia, Junsu Han, Zhihao Wu, Qianming Gong

引用次数: 0

Oil-Resistant Underoil Superhydrophilic Metallic Foams for Lampblack Prefiltration 用于灯黑预过滤的耐油油底超亲水金属泡沫

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c13153

Junxu Chen, Weilin Deng, Wei Wang, Jing Liu, Mengyang Zhang, Xingyu Liu, Yihao Hu, Pengfei Zhang, Xinquan Yu, Youfa Zhang

{"title":"Oil-Resistant Underoil Superhydrophilic Metallic Foams for Lampblack Prefiltration","authors":"Junxu Chen, Weilin Deng, Wei Wang, Jing Liu, Mengyang Zhang, Xingyu Liu, Yihao Hu, Pengfei Zhang, Xinquan Yu, Youfa Zhang","doi":"10.1021/acsami.4c13153","DOIUrl":"https://doi.org/10.1021/acsami.4c13153","url":null,"abstract":"Superwetting/repelling coatings have been utilized to address the issue of oil contamination on lampblack prefiltration metallic foam by both academia and industry. Nevertheless, the widely adopted superamphiphobic coatings are currently costly and suffer from poor wear resistance. In this study, we propose an oil-resistant underoil superhydrophilic (LSH) coating by a dip-coating method. The subsequent heating process at 200 °C for 5 min strengthens the designed coating based on lithium polysilicate cross-linking reinforcement. The LSH coating with a minimal water contact angle up to 3.4° under soybean oil can spontaneously achieve oil desorption within 7 s under water. Moreover, the coating retains its superhydrophilicity after enduring 900 friction cycles under a 500 g load or being immersed in 50 °C soapy water for 48 h. Hence, the LSH coating with great durability on metallic foam for lampblack prefiltration resulted in a 9.3% decrease in the oil absorption weight ratio after a 17-day cooking test. This work underscores the potential application of the LSH coating in lampblack prefiltration components, presenting promising technological advancements in self-cleaning for the catering industry.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Biomimetic Electrical Stimulation System Inducing Osteogenic Differentiations of BMSCs 诱导 BMSCs 成骨分化的仿生电刺激系统

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI: 10.1021/acsami.4c11890

Zengzilu Xia, Huiwen Zhang, Qing Li, Chao Yi, Zhijian Xing, Zizhen Qin, Huilin Zhao, Jing Jing, Chuanrong Zhao, Kaiyong Cai

{"title":"The Biomimetic Electrical Stimulation System Inducing Osteogenic Differentiations of BMSCs","authors":"Zengzilu Xia, Huiwen Zhang, Qing Li, Chao Yi, Zhijian Xing, Zizhen Qin, Huilin Zhao, Jing Jing, Chuanrong Zhao, Kaiyong Cai","doi":"10.1021/acsami.4c11890","DOIUrl":"https://doi.org/10.1021/acsami.4c11890","url":null,"abstract":"Electrical stimulation has been used clinically as an adjunct therapy to accelerate the healing of bone defects, and its mechanism requires further investigations. The complexity of the physiological microenvironment makes it challenging to study the effect of electrical signal on cells alone. Therefore, an artificial system mimicking cell microenvironment in vitro was developed to address this issue. In this work, a novel electrical stimulation system was constructed based on polypyrrole nanowires (ppyNWs) with a high aspect ratio. Synthesized ppyNWs formed a conductive network in the composited hydrogel which contained modified gelatin with methacrylate, providing a conductive cell culture matrix for bone marrow mesenchymal stem cells. The dual-network conductive hydrogel had improved mechanical, electrical, and hydrophilic properties. It was able to imitate the three-dimensional structure of the cell microenvironment and allowed adjustable electrical stimulations in the following system. This hydrogel was integrated with cell culture plates, platinum electrodes, copper wires, and external power sources to construct the artificial electrical stimulation system. The optimum voltage of the electrical stimulation system was determined to be 2 V, which exhibited remarkable biocompatibility. Moreover, this system had significant promotion in cell spreading, osteogenic makers, and bone-related gene expression of stem cells. RNA-seq analysis revealed that osteogenesis was correlated to Notch, BMP/Smad, and calcium signal pathways. It was proven that this biomimetic system could regulate the osteogenesis procedure, and it provided further information about how the electrical signal regulates osteogenic differentiations.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Titanium Nitride as an Effective Interphase for Carbon-Fiber-Reinforced Silicon Carbide Ceramic Matrix Composites. 氮化钛作为碳纤维增强碳化硅陶瓷基复合材料有效中间相的研究。

IF 8.3 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-11 DOI: 10.1021/acsami.4c13081

Kaveendra Yasas Wickramathilaka, Joseph Valus, Seth Shuster, Ryan Purgay, Yara Suleiman, Steven L Suib

{"title":"Investigation of Titanium Nitride as an Effective Interphase for Carbon-Fiber-Reinforced Silicon Carbide Ceramic Matrix Composites.","authors":"Kaveendra Yasas Wickramathilaka, Joseph Valus, Seth Shuster, Ryan Purgay, Yara Suleiman, Steven L Suib","doi":"10.1021/acsami.4c13081","DOIUrl":"https://doi.org/10.1021/acsami.4c13081","url":null,"abstract":"Ceramic matrix composites (CMCs) have played a significant role in increasing the efficiency of gas turbine engines. CMCs combine the high temperature resistance of ceramics with the high mechanical strength of ceramic fibers into a single unit. Interphase layers are a crucial component in CMCs, as they prevent ceramic fibers from oxidation and introduce strengthening mechanisms into the composite. Hexagonal boron nitride and pyrolytic carbon are the most commonly used interphase layers in the aerospace industry. Other than that, very few materials have been evaluated as interphase layers. In this study, we explore the possibilities of using titanium nitride as an interphase layer in single-tow CMCs (mini composite) representative of a unidirectional composite at a smaller scale. T-300 carbon fibers were coated with TiN by atmospheric pressure chemical vapor infiltration using TiCl4, N2, and H2. The deposition temperature, precursor flow rate ratio, total precursor flow rate, and deposition time were optimized to obtain high-quality coatings. The best coating was produced at 800 °C, 4:1 H2 [TiCl4]/N2 ratio, 125 standard cubic centimeters per minute (N2 + H2 [TiCl4]) total flow precursor flow rate, and 2 h of deposition time. At these conditions, the coatings displayed good fiber coverage, good fiber adhesion, minimum fiber linkage, and minimum surface roughness. There was minimum fiber degradation after TiN coating, with a retention of 95% of the initial Young's modulus and 26% of the ultimate tensile strength of the carbon fiber. Adding the TiN interphase coating to the Cf/SiC CMC increased the ultimate tensile strength of the composite by 1122% and Young's modulus by 150%.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142398624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robustly Flexible, Highly Transparent, and Polymerization-Regulated Polyimide Aerogel Membranes as Efficient Thermal Insulators for Solar Collection. 坚固柔韧、高透明、聚合调节型聚酰亚胺气凝胶膜作为太阳能收集的高效隔热材料。

IF 8.3 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2024-10-11 DOI: 10.1021/acsami.4c13806

Jia Chen, Zhilin Chen, Xianbo Hou, Liming Chen

{"title":"Robustly Flexible, Highly Transparent, and Polymerization-Regulated Polyimide Aerogel Membranes as Efficient Thermal Insulators for Solar Collection.","authors":"Jia Chen, Zhilin Chen, Xianbo Hou, Liming Chen","doi":"10.1021/acsami.4c13806","DOIUrl":"https://doi.org/10.1021/acsami.4c13806","url":null,"abstract":"Efficient thermal insulators that can maintain their efficacy at extreme temperatures are in pressing demand, particularly in fields such as energy saving, aerospace, and sophisticated equipment. Herein, a novel and facile polymerization-regulated optimal strategy is adapted to realize the comprehensive performance of polyimide (PI) aerogel membranes with mechanical robustness, high flexibility, hydrophobicity, light transmittance, and efficient thermal insulation. Benefiting from the hydrolysis of monomers and chemical imidization reaction process verified by a thermo-chemo-mechanically coupled theoretical model, the viscosity of precursors, shrinkage rate, and microstructure of aerogels are precisely controlled, leading to a low thermal conductivity range of 0.023-0.044 W/(m·K). The fabricated PI aerogel membranes, which undergo a remarkable transformation from their initial brittle and opaque nature to a state of high flexibility and transparency, exhibit a 3.0 times increase in tensile strength (4.6 MPa) and a 8.4 times improvement in elongation at break (20.6%) over previous studies while demonstrating an exceptional light transmittance of 92.5% across a wide spectral range from 500 to 2500 nm. Additionally, the PI aerogel membranes possess superior mechanical properties and a wide temperature resistance range extending from -196 to 300 °C. These flexible PI aerogel membranes can be effectively adjusted to meet the practical application of a circular ring solar thermal collector, which displayed a high solar heat collection temperature of 135 °C at a thickness of 0.5 mm. The coordination between the thermophysical properties and mechanical properties of the PI aerogel membranes in this work holds great promise for application requirements of thermal insulators in optical elements under harsh environments.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142398628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0