Energy Materials
·
2025
·Vol. 5
·期 3
·N
·
IF 11.2
Yulin Xie,Qingyun Dou,Guosheng Li,Yuecong Chen,Xingbin Yan
Zinc-ion batteries (ZIBs) are being explored as a potential alternative to lithium-ion batteries owing to the growing demand for safer, more sustainable, cost-effective energy storage technologies. In such systems, electrolytes, as one of the key components, have a decisive impact on their electrochemical performance. However, Zn anodes in traditional aqueous electrolytes exhibit drawbacks such as severe hydrogen evolution reactions, Zn corrosion and passivation especially at high temperatures, leading to poor cycling performance of ZIBs. Herein, we designed and evaluated a series of hybrid electrolytes consisting of zinc tetrafluoroborate hydrate [Zn(BF4)2·xH2O] as the solute and various organic solvents [tetraglyme (G4), propylene carbonate, and dimethylformamide] for high-temperature ZIBs. Comparative analysis revealed that G4-based hybrid electrolytes exhibit a unique Zn2+ solvation structure primarily surrounded by organic solvent rather than H2O, which substantially reduces H2O-related side reactions and thus promotes more reversible Zn deposition than propylene carbonate-based and dimethylformamide-based hybrid electrolytes. The superiority of G4-based hybrid electrolyte is further confirmed by long stable cycling life of the corresponding Zn||Zn symmetric cell (> 350 h) and Zn-ion capacitor full cell (over 1,400 cycles with 90.7% capacity retention) at 60 °C.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Mengyue Wang,Wentao Dong,Xi Lu,Qin Yang,Bin Yan
In this work, we developed a high-performance two-component epoxy adhesive from two biobased triple-functional and hexa-functional epoxy monomer from lignin-derived monomer eugenol, and a cellulose-derived furfuryl diamine for metal substrates. Through a tight cross-linked network and rich electronegative structure, the adhesives showed excellent adhesive performance to various metal substrates, especially for Fe. It demonstrated a high lap shear strength up to 19.8 MPa to Fe substrate, surpassing most reported epoxy adhesives. Moreover, these adhesives exhibited excellent long-term adhesion properties in high-temperature and acidic/base aqueous environments. It can maintain more than 95% of the adhesive strength to Fe substrate after soaking in different acid-base environments for 7 days, and achieved a maximum adhesion strength of 16.46 MPa to Fe substrates at 200 °C only 14.2% decrease when compared to that at room temperature. Molecular simulations revealed that these two adhesives could rapidly achieve dynamic equilibrium with Fe (110) surface in 15 and 22 ps which was much shorter than that to Cu and Al, suggesting a stronger binding energy between these adhesive and Fe surfaces and was consistent with the adhesion performance. This work widens the way for high-performance bio-based epoxy adhesives to be used in more demanding environments.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Qi You,Zhongyang Wu,Yongjun Li,Ya Zhong,Sisi Shang,Man Yuan,Yichen Ou,Huanhuan Xu,Sheng Cui
Mullite aerogel is considered a promising candidate for thermal protection. However, structural collapse and poor temperature resistance limit its application at high temperature. Herein, amorphous SiOC-coated mullite aerogels (MAs) were prepared by high-temperature calcination, using Al 2 O 3 nanorods and SiO 2 particles as precursor units. The one-dimensional submicron skeleton prevents weak pearl chain connections and high surface energy, while the nanoscale amorphous SiOC layer protects the encapsulated mullite skeleton, ensuring a strong skeleton and pores at high temperatures. MAs exhibit a low thermal conductivity of 0.0375 W/(m·K) at room temperature, a robust compressive strength of 0.369 MPa, and good thermal stability: after 30 min of annealing at 1500 ℃, the minimal linear shrinkage of MAs was 0.72 %. Interestingly, the amorphous SiOC layer grew into nanowires under a butane flame, which reconstructed the network and impeded the heat flow. Thus, the novel MAs exhibit considerable thermal insulation advantages in harsh environments.
研究领域:
材料科学
·
热防护技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Fan Yang,Yongpeng Dong,Yuqiu Wang,Jimei Xue,Shangwu Fan,Xiaomeng Fan,Laifei Cheng
For electromagnetic wave absorbing ceramic matrix composites, it is crucial to control the loss mechanism to achieve stable high-temperature broadband absorption performance. In this work, multiscale structural design is utilized to enrich EMW loss mechanism, synergistically improving the EMW absorption capacity and bandwidth. Firstly, based on the tunability of the fiber preform, three-dimensional carbon fiber periodic units were constructed on an N610 fiber cloth. Then, the intrinsic electromagnetic properties of the N610 fibers were modified by introducing nanoscale absorption units, namely carbon nanowires. The carbon nanowires were diffusely distributed in transparent N610/SiOC composites by controlling the reaction conditions, forming a large number of heterogeneous interfaces and conductive networks. The carbon fiber and carbon nanowires, together with the notable conductivity difference with respect to the N610/SiOC composites, significantly enhance the polarization loss and conductive loss. Besides, the periodically arranged carbon fibers can trap the incident EMWs and reduce their transmission, promoting reflection, scattering, and absorption. The designed N610/SiOC composites exhibit superior EMW absorption performance from room temperature to 600 ℃, with a reflection loss less than −8 dB across the entire investigated band and an effective absorption bandwidth exceeding 10.7 GHz at 4–18 GHz. This innovative multiscale design approach, characterized by a discrete distribution of absorbing units with a high electronegativity difference, represents a fresh avenue for advancing the development of high-temperature and wide-band EMW-absorbing CMCs.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 13
·3235
·
IF 3.1
Xiang Zhang,Xueying Zhang,Zhongyan Wang,Yunjia Xue,Anran Guo,Liwen Yan,Feng Hou,Jiachen Liu
Mullite fiber felt is a promising material that may fulfill the demands of advanced flexible external thermal insulation blankets. However, research on the fabrication and performance of mullite fiber felt with high-temperature resistance and thermal stability is still lacking. In this work, mullite fibers were selected as raw materials for the fabrication of mullite fibrous porous materials with a three-dimensional net structure. Said materials’ high-temperature resistance and thermal stability were investigated by assessing the effects of various heat treatment temperatures (1100 °C, 1300 °C, and 1500 °C) on the phase composition, microstructure, and performance of their products. When the heat treatment temperature was below 1300 °C, both the phase compositions and microstructures of products exhibited stability. The compressive rebound rate of the product before and after 1100 °C reached 92.9% and 84.5%, respectively. The backside temperature of the as-prepared products was 361.6 °C when tested at 1500 °C for 4000 s. The as-prepared mullite fibrous porous materials demonstrated excellent high-temperature resistance, thermal stability, thermal insulation performance, and compressive rebound capacity, thereby indicating the great potential of the as-prepared mullite fibrous porous materials in the form of mullite fiber felt within advanced flexible external thermal insulation blankets.
研究领域:
材料科学
·
高温材料研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Lubricants
·
2024
·Vol. 12
·期 5
·155
·
IF 3.1
Weidong Zhou,Yong Li,Shutian Cheng,Yongdi He,Jinou Song,Qiang Zhang
In this study, layered double hydroxide (LDH) and molybdenum disulfide (MoS2) were used as additives to prepare lubricants. The morphology and particle distribution of the LDH and MoS2were characterized using a scanning electron microscope and a laser particle size analyzer, respectively. Thermogravimetric analysis was used to compare the performance of the lubricants at high temperature. The extreme pressure and wear resistance performance of the lubricants were tested using a four-ball machine and a fretting-wear machine. Then, the lubricants were applied in a bolt fastener. The loosening torque and surface wear condition at high temperature were compared. By adding LDH and MoS2to the lubricants, the extreme pressure and wear resistance performance and anti-seize performance at high temperature were improved significantly. The LDH showed better anti-seize performance than the MoS2because of its strong and stable structure at high temperature. The MoS2showed better anti-wear performance under a high load because of its soft layered structure. The MoS2with a larger particle size showed better extreme pressure performance under a high load. The LDH and MoS2played a synergistic effect under the conditions of high temperature and high load.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shuyang Zhou,Hang Zhao,Na Zhang,Lei Yin,Jinbo Bai
With the rapid development of electric vehicles, aerospace technology, and other emerging applications, the demand for polymer film capacitors capable of operating under extreme conditions is increasing rapidly. However, the significant rise in conduction losses at high temperatures and high electric fields results in substantial deterioration in energy storage performance of polymer dielectrics. Thus, designing composite dielectrics in structural to effectively mitigate their conduction losses remains a critical challenge. This study introduces a typical sandwich-structured high-temperature polymer-based composite dielectric, incorporating surface-charged kaolinite nanosheets (KLNS) and the organic molecular semiconductor 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) with high electron affinity in different polyetherimide (PEI) layers, respectively. This construction introduces differential charge traps into the composites to modulate charge migration and capture the charges that injected from electrodes or excited in the dielectric. Experimental results demonstrate that this construction effectively reduces leakage current caused by Poole-Frenkel emission and hopping conduction, thereby suppressing the conduction losses of composites at high temperatures. Consequently, the sandwich-structured composite exhibits an excellent high-temperature stability in electrical properties and the optimized composite filled with 0.2 wt% KLNS in the middle layer and 0.5 wt% NTCDA in the outer layers achieves an ultrahigh discharged energy density ( U e ) of 5.0 J/cm 3 and a high efficiency ( η ) of 88.7 % at 150 °C, representing improvements of 163 % and 41 % compared with pure PEI ( U e ∼ 1.9J/cm 3 , η ∼ 62.8 %), respectively. This study presents an effective strategy for designing composites with enhanced energy storage capabilities under high-temperature and high-electric-field conditions.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Zhuo Chen,Xiufang Cui,Yongzhi Jing,Guo Jin,Xiang Wang,Yongchao Fang,Xinhe Wang,Dianchao Liu,Bin Wang
This study utilizes modulation of ionic disorder and electronegativity differences for targeted component design of high-entropy ceramic compositions. A series of novel multicomponent ceramics with the general formula ( LaGdYSm ) x 2 Yb x 1 Zr 2 O 7 (x 1 +4x 2 = 2, x 1 = 0.6,0.4,0.2,0) were prepared by solid-state reaction. The evolution patterns of their microstructures were analyzed using XRD and TEM, and the anti-sintering ability and thermophysical properties were evaluated. The results confirm that the multicomponent ceramics gradually transform from the coexistence of pyrochlore/fluorite dual-phase structure to pyrochlore structure with the tuning of the size disorder degree. After 50h of exposure to air at 1500 °C, the ceramics retained excellent phase stability. Segregation of La and Yb elements with large differences in radius size occurs, forming a mixture of the La-rich pyrochlore and the Yb-rich fluorite phases. The specimen with the maximum size disorder exhibits the lowest grain growth rate and the greatest thermal insulation properties. Large lattice distortions and sluggish diffusion effects are responsible for the mutual inhibition of grain growth in the two-phase coexistence zone. The thermal insulation properties of the ceramics show well correlated with the degree of the size disorder, further validating the effectiveness of the component design. Meanwhile, the thermal expansion coefficients of prepared ceramic can reach 11.49 × ∼11.58 × 10 −6 K −1 at 1000–1100 °C. The customization principles used in this work fill a gap in the compositional design methodology for multicomponent lanthanum zirconate-based high-entropy ceramics. It is essential for developing rare-earth zirconates with tunable thermophysical properties in the area of thermal barrier coatings.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
Processes
·
2025
·Vol. 13
·期 2
·376
·
IF 2.8
Lifang Song,Chengwen Wang,Jingping Liu,Yang Li
A high-temperature resistant suspension stabilizer, SIAM-1, for high-density cement slurry used in deep/ultra-deep well cementing has been successfully developed. This suspension stabilizer is based on the temperature-resistant monomers 2-acrylamido-2-methylpropane sulfonic acid (AMPS) andN,N-dimethylacrylamide (NNDMA). Meanwhile, two functional monomers, long-hydrophobic-side-chain temperature-sensitive monomers and temperature-resistant monomer-modified nano-SiO2monomers, were introduced. To enhance the participation of two functional monomers in the polymerization process, a method combining a small amount of acrylamide (AM) and emulsion polymerization was employed, leading to the successful synthesis of SIAM-1 with a high content of functional monomers. The study also explores the effects of polymerization method and AM on the conformational characteristics of the resulting polymers. The results confirm that the polymer structure aligns with the designed configuration, and SIAM-1 demonstrates excellent high-temperature resistance, with a tolerance of up to 210 °C. The optimal dosage of AM was found to be 4% of the total monomer mass. SIAM-1 exhibits excellent high-temperature rheological properties, maintaining a viscosity as high as 128 mP·s at 210 °C. Moreover, it effectively improves the suspension stability of the cement slurry at 210 °C. The density differences in the conventional-density and high-density cement slurries are 0.006 g∙cm−3and 0.039 g∙cm−3, respectively. This research is beneficial for increasing the viscosity of the cement slurry at high temperatures, effectively preventing the settlement of solid-phase particles under high-temperature and high-pressure well conditions. Consequently, it enhances the cementing effect of deep/ultra-deep wells and reduces cementing-related risks.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
eTransportation
·
2023
·
IF 11.9
Yuanzheng Long,Jialiang Lang,Kai Liu,Kuangyu Wang,Yulong Wu,Haitian Zhang,Meicheng Li,Yang Jin,Xiangming He,Hui Wu
Along with the rapid development of electric vehicles (EVs) and intermittent renewable energy, energy storage for EVs has received much attention over the past decade. Rechargeable batteries have been considered a feasible solution to utilize intermittent renewable energy with higher efficiency. Rechargeable batteries with promising safety, lifespan, low expenditure, durable components, or mature electric control systems are desired for energy storage systems . Recently, solid electrolyte-based liquid lithium (SELL) batteries have demonstrated excellent performances and great potential for energy storage applications by manipulating different cathode materials . Herein, a new type of SELL battery with Li 4 Ti 5 O 12 cathode (SELL-LTO battery) is reported. Li 4 Ti 5 O 12 is a distinctive electrode material with good rate performance, high-standard safety, moderate cost, and superior cycling stability at 280 °C, which make it an excellent cathode material for SELL batteries. The assembled SELL-LTO full cell has been cycled 100 times with an average energy efficiency of 92%. Moreover, the cell also exhibits good rate performance and can recover after being cooled and thawed.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Lingjie Li,Zhonghao Ning,Wenyan Huang,Liang Liao,Yinong Zheng,Kun Zhuang,Siqi Lan,Yinggan Zhang,Rongqian Yao
An ingenious strategy to prepare in-situ formed SiC(Al, rGO) bulk polymer-derived ceramics (PDCs) from re-pyrolyzing SiC(Al, rGO) p /polyaluminocarbosilane-vinyltriethoxysilane-graphene oxide (PACS-VTES-GO, PAVG) blends is highlighted. Flexible PAVG modified by Al with highly cross-linked structure effectively improves molecular weight and formability of precursors. Rigid SiC(Al, rGO) p fillers provide high mechanical properties owing to their unique microstructure which is consistent with SiC(Al, rGO) bulk PDCs. β-SiC nanocrystals are well dispersed in amorphous SiO x C y /C free , and rGO exhibits good compatibility with SiO x C y /C free . Besides, possible Al 2 O 3 is beneficial to relaxing thermal stress at β-SiC nanocrystalline boundaries. Interestingly, introduction of Al could avoid coarsening of β-SiC grains to enhance elevated temperature resistance. Furthermore, effect of re-pyrolysis temperature on the formation and microstructure of SiC(Al, rGO) bulk PDCs was also investigated. Particularly, lightweight samples re-pyrolyzed at 1300 °C display optimal fracture toughness (3.32 MPa m 1/2 ), compressive strength (177.16 MPa) and flexural strength (51.25 MPa), high ceramic yield (94.46%) and low linear shrinkage (4.38%), by far superior to those of most PDCs. As treated via precursor infiltration and pyrolysis (PIP) route and heated by butane gun flame in air, such products possess stable structures under elevated temperatures and have potential emerging uses in aerospace components.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2020
·Vol. 23
·期 5
·863-872
·
IF 1.654
Xuepeng Wu,Jianwu Zhen,Bitao Song,Shuyang Gao,Zhaohui Song,Junbin Jin
A pH-responsive amphiphilic surfactant stearic amide 3-(N , N-dimethylamino)propylamide (SAA) was synthesized and served as a thickener in aqueous solution to construct a switchable viscoelastic surfactant fluid (VES fluid). The structure of SAA was studied by 1 H NMR, and the viscoelastic behavior of VES fluid was studied in detail by rheological measurements. The viscosity of this VES fluid can be switched reversibly from low to high immediately by adjusting system pH value. Even at high shear rate (170 s −1 ) and high temperature (90 °C), excellent viscoelastic behavior of this VES fluid can be observed, which is a key performance for fracturing applications. Meanwhile, the recycled VES fluid can still maintain good pH-responsive behavior even after more than three cycles. These unique performances of this VES fluid not only enhanced our understanding of the transformation of wormlike micelles at high temperature, but also enriched a large potential of VES fracturing fluid in the development of oil and gas reservoirs.
研究领域:
化学工程
·
石油工程
·
材料科学
✓ 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）