Materials Chemistry Frontiers
·
2025
·
IF 6.4
Shi Wang,Huan Yang,Yukai Chen,Boyuan Hu,Peng Tian,Xiongbiao Xue,Yong Wang,Yu Li,Xinli Jing
Conducting polymer (CP) hydrogels that possess electronic and ionic conducting behaviors have attracted increasing attention as flexible electronic materials. Due to the insoluble and infusible nature of CPs (e.g., polyaniline (PANI), polypyrrole (PPy), etc.), the performance of their hydrogels is typically restricted, especially when the hydrogel was constructed through the in situ polymerization of aniline or pyrrole monomers. In this study, a method to prepare robust and highly conducting hydrogels at a large scale was developed with highly conducting PPy nanotubes (PPy NTs) and an interpenetrating network (IPN) of polyacrylic acid (PAA) and polyvinyl alcohol (PVA). The PVA/PAA IPN contains covalent cross-linking points, ionic coordination, and hydrogen bonding sites. This structure endows the hydrogel with excellent strength and toughness and provides effective stabilization for PPy NTs. The obtained PPyNT/PAA/PVA hydrogels exhibit tensile strengths higher than 4.0 MPa, and the conductivity reached 5.3 S m−1 with a PPy NT content of 0.63 wt%. As the PPy NTs effectively bonded with the hydrogel matrix network, the PPyNT/PAA/PVA hydrogels exhibit a linear relationship of conductivity change vs. strain in a wide strain range of 0–500%, with a steady gauge factor (GF) of ca. 1.38. Benefiting from preparation feasibility, the variation trends of hydrogel conductivity, deformation ability, and sensing properties were systematically studied, providing a reference for high-performance strain sensor materials.
研究领域:
材料科学
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高分子科学
·
纳米技术
·
柔性电子学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xin-ya Bu,Yan-li Zhu,Cong-jie Wang,Wei Li,Yu Xia,Yong Zhao
Thermal batteries are solid-state, thermally activated batteries with long storage times and high reliability. FeS2 is used as a cathode material commonly, but the high internal resistance and low voltage platform limit the improvement of battery performance. Herein, the 1T-phase vanadium disulfide (VS2) is prepared via the scalable hydrothermal method and applied to thermal battery cathode materials for the first time. 1T-VS2 lamellar flower clusters have high electronic conductivity (1.583 S cm–1) at room temperature, which is 75 times higher than FeS2 (0.021 S cm–1). Mechanism analysis shows that 1T-VS2@V2O3 can be formed based on the part of 1T-VS2 being oxidized to V2O3 at the discharge temperature. Benefiting from the synergistic effect of vanadium sulfide and vanadium oxide as a cathode for thermal batteries enhanced specific capacity (292.4 mA h g–1) and mass energy density (572.5 W h kg–1) when cutoff voltage is 1 V. Additionally, the discharge results indicate that the cells utilizing 1T-VS2 cathodes provided a higher voltage platform of 2.11 V than 1.84 V for FeS2. This impressive work can offer a good strategy for boosting cathode materials for a high-performance thermal battery.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Yanling Dong,Hanqing Li,Biao Zhang,Fugui Zhao,Feng Gao,Dong Liu
Microsized silicon (μSi) anodes take advantage of low-cost, high tap density, and high theoretical capacity (∼4200 mAh g–1). However, poor cycle stability is presented because of huge volume change during cycling, which seriously limits their practical application in commercial lithium-ion batteries. Herein, a tough composite network combining high electronic and ionic conductivity is developed to stabilize the operation of the μSi anode. The resultant μSi electrode exhibits a high capacity of 3789.0 mAh g–1 with a high initial Coulombic efficiency (ICE) of 92.2% at 100 mA g–1, high-rate capability (1636.0 mAh g–1 at 3 A g–1), and good cycle stability with a high capacity retention of 92.0% from 1908.7 mAh g–1 at 15th to 1755.9 mAh g–1 at 135th cycle under 2 A g–1. The excellent electrochemical performance is attributed to the high stretchability (560%) of the 3D structure of the composite network, which can preserve the integral electrode structure, providing rapid electronic conductivity and ionic conductivity during cycling and resulting in outstanding electrochemical performance. This work offers a facile strategy for the development of a tough network combining high electronic and ionic conductivity to enhance the electrochemical performance of high-capacity Si anodes and beyond for energy-dense batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 4
·378
·
IF 2.935
Xiaomin Luo,Wenjie Hu,Min Cao,Huijun Ren,Jianyan Feng,Mengyuan Wei
A large amount of research has been devoted to developing novel superhydrophobic coatings. However, it is still a great challenge to pursuean environmentally friendly method that leads to superhydrophobic coatings. Herein, we demonstrate for the first time, an environmentally friendly method for the preparation of conductive superhydrophobic coatings with sandwich-like structures by using aminoethylaminopropyl polydimethylsiloxane modified waterborne polyurethane (SiWPU) andN-octadecylamine functionalized multi-wall carbon nanotubes. These environmentally friendly coatings with the sheet resistance of 1.1 ± 0.1 kΩ/sq exhibit a high apparent contact angle of 158.1° ± 2° and a low sliding angle below 1°. The influence of the surface texture before and after heat treatment on the wetting properties is discussed. In addition, the coatings can be electrically heated by 3~113 °C with a voltage of 12~72 V, and thus, can be used for deicing. Furthermore, the resulting coatings demonstrate good performance of wear resistance and ultraviolet resistance, which will have broad application potential in harsh environments.Keywords:environmentally friendly;conductivity;polyurethane
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
WOOD SCIENCE AND TECHNOLOGY
·
2023
·Vol. 57
·期 6
·1467-1483
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IF 3.4
Ba Zhichen,Liang Daxin,Xiao Zefang,Wang Yonggui,Wang Haigang,Xie Yanjun
In living spaces where wood is commonly used for both construction and decoration, it is crucial to minimize electromagnetic pollution and the risk of fire. In this study, we applied aniline treatment to wood in situ and examined its impact on electromagnetic shielding and fire resistance. By enabling in situ polymerization and the deposition of polyaniline particles within the wood, we enhanced the wood’s conductivity while maintaining its porous structure, thereby improving its ability to absorb microwaves. The results indicated that wood species with low density exhibited higher electromagnetic shielding efficiency after treatment due to their greater polyaniline loading. Specifically, an specific electromagnetic shielding efficiency up to 65.8 dB cm −3 g −1 was achieved on the cross sections of treated wood. Furthermore, the total heat release and smoke production decreased by 43.9% and 66.7%, respectively, while the wood char mass increased by 66.3%. The results demonstrated that polyaniline-treated wood with bifunctional features could serve as a promising candidate in this field.
研究领域:
材料科学
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林学
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化学工程
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 38
·2203620
·
IF 15.153
Hongsheng Liang,Limin Zhang,Hongjing Wu
High density and skin effect restrict the research progress of metal predominated electromagnetic wave absorbing (EMA) materials. Although some works try to solve it, they do not focus on the metal itself and do not involve the optimization of the active site of the inherent defects of the metal. In this work, the modulation of morphology, composition, interface, defects, and conductivity is achieved by adjusting the ratio of copper salt to reducing agent chitosan. Uniquely, the appearance of twin boundaries (TBs) accelerates the ability of the homogeneous interfaces to transfer charges, resists the oxidation of metal Cu 0 , keeps the high electric conductivity of Cu 0 nanoparticles, and enhances the conduction loss, which provides a boost for electromagnetic wave dissipation. As a result, the metal Cu 0 predominated absorber (Cu-NC (N-doped carbon)−10,) exhibits an ultra-width effective absorption band of 8.28 GHz (9.72–18.00 GHz) at a thickness of 2.47 mm and the minimum reflection loss ( RL ) value of −63.8 dB with a thickness of 2.01 mm. In short, this work explores the EM regulation mechanism of TBs compared with grain boundaries (GBs), which provides a new insight for the rational design of metal predominated EMA materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Huimin He,Yanran Li,Hongzhen Liu,Yoonseob Kim,Aixin Yan,Lizhi Xu
Recent research on conductive hydrogels has revealed their potential for building advanced soft bioelectronic devices. Their mechanical flexibility, water content, and porosity approach those of biological tissues, providing a compliant interface between the human body and electronic hardware. Conductive hydrogels could be utilized in many soft tools such as neural electrodes, tactile interfaces, soft actuators, and other electroactive devices. However, most of the available conductive hydrogels exhibit weak mechanical properties, which hinders their application in durable biointegrated systems. Here, we report aramid nanofiber-based hydrogels providing a combination of high elasticity, strength, and electrical conductivity. Highly branched aramid nanofibers (ANFs) provide a robust three-dimensional (3D) framework resembling those in load-bearing soft tissues. When interlaced with poly(vinyl alcohol) (PVA) and cross-linked with both noncovalent and covalent interactions, the nanofiber composites exhibit a high water content of ∼76.4 wt %, strength of ∼7.5 MPa, ductility of ∼407%, and shape recovery of ∼99.5% under cyclic tensile stress of 0.3 MPa. Mobile ions impart a conductivity of ∼2 S/m to the hydrogels, enabling large-strain sensors with stable operation. In addition, the embedded silver nanoparticles afford broad-spectrum antimicrobial activities, which is favorable for medical devices. The versatility of aramid nanofiber-based composites suggests their further possibilities for functionalization and scalable fabrication toward sophisticated bioelectronic systems.
研究领域:
生物医学工程
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Longyan Zhang,Gang Zhao,Xinming Wu
Molybdenum disulfide (MoS 2 ) has been widely studied in supercapacitors due to its high theoretical capacity, but the lower intrinsic conductivity limits its further application. In this paper, Al, P-doped MoS 2 was grown in situ on carbon cloth using a one-step hydrothermal method, respectively, and the implementation of the doping strategy increased the layer spacing of MoS 2 while synergistically improving the conductivity and specific capacitance of the material. The results show that Al, P doping not only enhance the conductivity of pristine MoS 2 by 35.8% and 21.1%, respectively, but also improve the specific capacitance from 284.4 F g -1 (at a current density of 0.5 A g -1 ) to 424.6 F g -1 and 449.2 F g -1 , respectively. Surprisingly, the ASC device assembled with Al 0.05 -MoS 2 as the positive electrode and P 0.05 -MoS 2 as the negative electrode achieved an energy density of 30.07 Wh kg -1 at a power density of 1259.99 W kg -1 . These results demonstrate the superiority of Al, P-doped MoS 2 nanoflowers for high-performance supercapacitor applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Jing Dong,Dengyu Yu,Lingyue Zhu,Meng Wang,Di Gu,Dandan Yuan,Tingting Jiang,Hongjun Wu,Baohui Wang
The poor conductivity and stability of ferrate salts are key factors that hinder the application of super‑iron batteries. In the paper, double strategies of graphene-coated potassium ferrate follow-up encapsulation of chitosan were proposed and implemented for enhanced the conductivity and stability of ferrate (VI) battery. The characterization and electrochemistry of modified ferrates and battery were performed in the lab works. The graphene oxide (GO)-coated and follow-up chitosan(CS)-encapsulated ferrates were successfully fabricated by a confirming of SEM images. The electrochemical and cell performance of the modified ferrates was tested and evaluated in a 10 M KOH solution using a button cell configuration. Notably, the GO-CS modified potassium ferrate exhibited superior cell performance and stability in high current discharge. Electrochemical impedance spectroscopy (EIS) reveals that the 1.75 wt% GO-CS coated sample exhibits the lowest charge transfer impedance. Discharge tests indicate that this sample outperforms the uncoated ferrate at 100 Ω while showing comparable performance at 200 Ω. UV analysis further showed that the 1.75 wt% GO-CS coating sample achieved optimal phenol degradation at both 15 mg and 20 mg doses, while the 1.05 wt% and 2.45 wt% coatings performed poorly.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 9
·2028
·
IF 4.6
Jialu Qu,Xingyu Duan,Ke Xue,Shengli An
Solid-state electrolytes (SSEs) have emerged as the most promising alternative to liquid electrolytes in batteries due to their enhanced stability and safety. Among these, the garnet-type Li7La3Zr2O12(LLZO) solid electrolyte has attracted significant research interest due to its wide electrochemical stability window and good air stability. However, the ionic conductivity of LLZO is lower due to its high sintering temperature and unstable phase structure. In this study, Li6.4+xFe0.2La3Zr2−xBixO12(x = 0, 0.05, 0.1, 0.15) solid electrolytes were synthesized using a conventional solid-state reaction method by co-doping LLZO with Fe3+and Bi3+ions. Compared with pure LLZO, doping with Fe3+effectively stabilizes the cubic phase, thereby enhancing the ionic conductivity. Moreover, Bi3+doping significantly lowers the sintering temperature of the electrolyte, which in turn reduces energy consumption during the processing. The co-doping of Fe3+and Bi3+not only improves the density of the LLZO electrolyte, achieving a relative density of up to 95%, but also increases the ionic conductivity, with a maximum value of 7.57 × 10−4S·cm−1observed at the optimal composition (Li6.4+xFe0.2La3Zr2-xBixO12, x = 0.1).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Chao Song,Ting Hu,Yan Liu,Rong Guo,Jie Han,Juqun Xi,Lei Fan
Conventional industrial conductive lubricants often contain various components to meet their functional requirements for long-term stabilization, lubrication, and conductivity. The complexity of these components makes their preparation, storage, and recycling difficult. To solve this problem, a simple three-component lamellar liquid crystals (LLCs) containing surfactant Brij30, H 2 O, and ionic liquid [C 10 mim]Br was designed and prepared. The results demonstrated that the Brij30/[C 10 mim]Br/H 2 O LLCs system has high stability, lubricity, and conductivity. In the friction test, compared with LLCs without ionic liquids, LLCs with 70 wt% [C 10 mim]Br content showed the best antiwear performance, reducing wear depth by 64.96 % and wear volume by 61.79 %. The lowest coefficient of friction was 0.0877 in the extended cycle test. The conductivity test illustrated the LLCs exhibited high electric conductivity in the [C 10 mim]Br concentration range of 40 wt% to 60 wt%. The addition of ionic liquid not only acts as a co-surfactant in the liquid crystal system to promote the assembly of the surfactant but also improves the lubrication performance and enhances the conductivity of the liquid crystal system. The generation of friction chemically reaction and physically adsorption films formed by LLCs at the friction interface has a synergistic effect on lubrication in the sliding friction process. The spherical wear particles generated by the friction process facilitate rolling friction to promote lubrication. In addition, LLCs can easily realize reusability by removing the wear debris generated by the friction process using the magneto-thermal method. These advantages make the LLCs a promising green, efficient conductive lubricant system.
研究领域:
材料科学
·
化学工程
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Biaobiao Yan,Xiaoting Liao,Tianlei Sun,Leilei Wu,Zhenfei Guo,Man Zhou,Yuanyuan Yu,Qiang Wang,Chaobin He,Ping Wang
Achieving multifunctional integration with comfortability and durability comparable to conventional textiles is one of the ultimate pursuits of personal protective wearables. Herein, a multi-protective textile with breathable, moisture-permeable and washable properties is reported, which is realized by cross-linking of electroactive MXene@gallic acid (MG) with the cationized cotton. Cationic modification reduces the charge repulsion between MG and cotton fibers, and promotes the deposition of conductive media on textile surface. After borax (STB) cross-linking, the obtained textile exhibits superior service stability and can be subjected to conventional washing, exhibiting antioxidant stability during natural storage. Importantly, the cross-linked textile inherits the properties of good breathability, softness and bendability as the original fabric. With the outstanding conductivity (260 mS/cm) and high absorptivity of the solar spectrum (0.920), the textile was used for Joule heating and solar heating, demonstrating their potential in the field of thermal management. Meanwhile, the textile demonstrates excellent antibacterial activity against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus , and maintained satisfactory antibacterial effect (>90 %) even after ten washing cycles. This facile strategy for fabricating personal protective textiles, based on cross-linking cotton fiber with electroactive mediators offers favorable durability, comfortability and multifunctionality, providing a scalable and sustainable approach for manufacturing multi-protective wearables.
研究领域:
材料科学
·
纺织工程
·
生物医学工程
✓ 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）