POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Jirui Qu,Yusheng Tong,Yujiao Bi,Wenbo Sun,Yanyue Shi,Zexuan Zhao,Zhihui Liu,Shaofeng Wang,Lei Liu,Xilei Chen,Chuanmei Jiao
In recent years, P-N based hybrids flame retardants have received more and more attention in the field of fire safety due to their synergistic effect in the gas and condensed phases, which makes it easy to achieve efficient flame retardancy. However, their flame retardant mechanism in the gas phase rests more on the increase of non-flammable gases than on the conversion of harmful gases to harmless gases, and their hybrids are often not sufficiently stable. Therefore, in this study, P-N hybrids were encapsulated and modified using MXene, which has high thermal stability and outstanding catalytic ability, to prepare a novel flame-retardant hybrid, MDAPP, which was incorporated into rigid polyurethane foam (RPUF) to achieve more efficient fire safety performance. The results showed that MDAPP significantly enhanced the fire safety properties of RPUF composites. Specifically, RPUF-2.0MDAPP resulted in 40.98%, 63.16, and 60.00% decreases in total heat release (THR), total smoke release (TSP), and CO production rate (COPR) of RPUF, respectively. Moreover, the system also achieves synergistic flame retardant effects in the gas and condensed phases. At the same time, RPUF-2.0MDAPP has excellent thermal shielding performance, with a temperature reduction of 88.14% compared to RPUF in a fire source heating test when placed in a vertical position. In addition, the compressive strength and hydrophobicity of RPUF-2.0MDAPP have been improved to ensure its longevity in complex environments. This study proposes a solution to the problem of reducing the fire risk of RPUFs and promotes the widespread use of RPUF.
研究领域:
消防安全工程
·
材料科学
·
高分子科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Bowei Liu,Rui Feng,Ling Zhou,Tong Zhou,Peng Su,Guanghui Zhao,Lijie Dong
Flexible multiferroic materials with lightweight, wearability, portability and high magnetoelectric conversion present significant potential for applications in wearable, wireless and self-powered device engineering. However, simultaneously achieving high magnetoelectric conversion and ideal flexibility remains a demanding challenge of multiferroic composite materials. Here, novel flexible magnetoelectric nanocomposite films are developed based on the self-synthesized ultra-fine magnetostrictive nanofibers and electrostrictive polymer P(VDF-TrFE). The ultra-fine magnetostrictive nanofibers have been tailored into 15 nm of average diameter by utilizing an ultra-fine polymer template ( s PPTA). This design aligns with the dimensions of P(VDF-TrFE) crystals to ensure optimal interfacial compatibility and effective stress transfer between the magnetostrictive and electrostrictive phase. Remarkably, a small amount (3 wt%) of nanofibers in the nanocomposite films enables a synergistic output effect of magnetoelectric coupling coefficient of 43.0 mV·cm −1 ·Oe −1 . The incorporation of ultra-fine and low-content nanofillers contributes to the lightweight and flexible nature of the nanocomposite films with the elongation at a break of 9 %. Moreover, the magneto-machine-electric conversion shows 7 % enhancement with a magnetic field application to verify the active effect of the magnetic field on strain response. This approach opens up a new avenue for the design and modulation of flexible magnetoelectric films and paves the way for wireless and wearable multifunctional devices.
研究领域:
材料科学
·
电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2023
·Vol. 39
·期 4
·690-696
·
IF 3.1
Xu Pengfei,Hua Yezhen,Jin Kangpeng,Xu Biao
Tin selenide(SnSe) material exhibits very excellent thermoelectric properties in both p- and n-type single crystals, benefiting from advantageous electronic structure and ultra-low lattice thermal conductivity. However, poor mechanical properties and time-consuming production limit its practical application, and polycrystalline SnSe has attracted great attention in recent years. Herein, the SnSe microplates are prepared by a facile solvothermal method and compacted by spark plasma sintering (SPS). With enhanced electrical conductivity( σ ) and optimized Seebeck coefficient( S ) benefited from the Sn vacancies and increased density of states effective mass by the incorporating of heavy rare earth element Gd, an enhanced power factor(PF) value of about 0.86 mW/(m·K 2 ) is realized in the p-type polycrystalline Sn 0.985 Gd 0.015 Se sample. Combined with the medium total thermal conductivity k tot and lattice thermal conductivity k lat of 0.7 and 0.56 W/(m·K), respectively, an enhanced peak dimensionless figure of merit( ZT ) of ca. 1.1 was achieved at 873 K along vertical to the SPS pressing direction. The average ZT was also improved as compared to that of the pristine SnSe sample.
研究领域:
材料科学
·
热电学
·
固体物理
✓ 已验证
DOI
高影响因子
Nature Energy
·
2024
·
IF 49.7
Meng Hongguang,Mao Kaitian,Cai Fengchun,Zhang Kai,Yuan Shaojie,Li Tieqiang,Cao Fangfang,Su Zhenhuang,Zhu Zhengjie,Feng Xingyu,Peng Wei,Xu Jiahang,Gao Yan,Chen Weiwei,Xiao Chuanxiao,Wu Xiaojun,McGehee Michael D.,Xu Jixian
The manufacturing of perovskite solar cells under ambient conditions is desirable, yet the efficiency of p–i–n perovskite solar cells fabricated in air still lags behind those made in an inert atmosphere. Here we introduce an ionic pair stabilizer, dimethylammonium formate (DMAFo), into the perovskite precursor solution to prevent the degradation of perovskite precursors. DMAFo inhibits the oxidization of iodide ions and deprotonation of organic cations, improving the crystallinity and reducing defects in the resulting perovskite films. We show the generation of additional p-type defects during ambient air fabrication that suggests the need for improving bulk properties of the perovskite film beyond surface passivation. Upon addition of DMAFo, we demonstrate that the efficiency of inverted p–i–n solar cells based on perovskite layers with 1.53-eV and 1.65-eV bandgaps fabricated under ambient conditions (25–30 °C, 35–50% relative humidity) increases by 15–20%. We achieve a certified stabilized efficiency of 24.72% for the 1.53-eV cell, on a par with state-of-the-art counterparts fabricated in an inert atmosphere.
研究领域:
材料科学
·
太阳能
·
化学
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Ziyue Wang,Huan Liu,Yicheng Peng,Jiyang Xie,Chengding Gu,Wanbiao Hu
Enhancing the breakdown strength (Eb) and polarization of the polymer-based composites through improving the effective interface bonding between the inorganic fillers and polymer matrix is always pursued to achieve high electrostatic energy storage performances. Along with this, paraelectric–ferroelectric (P–F) structured bipolymer PMMA-P(VDF-HFP) was copolymerized and blended to maintain the high Eb but reduce the residual polarization, and meanwhile, potassium triniobate (KNb3O8) rods synthesized by a molten salt (KCl and K2SO4) method were surface-modified using a polydopamine (PDA) shell to form fillers for the fabrication of the composite films that were prepared by a solution casting process. The fabricated PDA@KNb3O8/PMMA-P(VDF-HFP) composite film by filling only a tiny amount of PDA@KNb3O8 (1.0 wt %) exhibits a much enhanced dielectric constant (ε ∼ 9) and polarization (Pmax ∼ 6.9) and large Eb (∼600 MV m–1), therefore giving rise to a high energy density of 15.30 J cm–3 combined with a discharge energy efficiency of 65%. The results herein can be comparative and superior to those of many high-energy storage inorganic–polymer systems that may render this system much potential for dielectric energy storage capacitors.
研究领域:
材料科学
·
电气工程
·
复合材料
·
能量存储
✓ 已验证
DOI
高影响因子
Advanced Electronic Materials
·
2025
·Vol. 11
·期 8
·2400738
·
IF 5.3
Guodong Han,Song Zhao,Sai Sui,Bo Feng,Yudeng Wang,Junxiang Zhou,Zhuolun Li,Xiaoxia Tian,Yuxiang Jia,Jiafu Wang,Shaobo Qu
Metal–Organic-Frameworks (MOFs) are commonly used as microwave-absorbing materials after pyrolysis treatment. Rare researchers treat MOFs as non-conductive materials and use them as absorbing materials directly. In this paper, MOFs@P-C-800 composite materials are prepared adopt to hydrothermal and ultrasonic dispersion methods by regulating the morphological characteristics of MOFs and the content of P-C-800. As for the Co-BDC-P-C-800, the maximum reflection loss reaches −18.4 dB at 14.29 GHz and the effective absorption bandwidth (EAB) achieves 3.87 GHz from 13.5 to 17.37 GHz. After the contents of P-C-800 is adjusted, the Co-BDC-P-C-800 (0.05 g) exhibited excellent microwave absorption performance, the maximum RL value of −60 dB at 13 GHz with a thickness of 2.0 mm, and the EAB achieves 5.91 GHz from 12.02 to 17.93 GHz. This paper not only provides new application direction for MOFs, but also offers a promising direction for the research and development of absorbing materials.
研究领域:
材料科学
·
微波吸收材料
·
纳米复合材料
·
电磁功能材料
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2025
·
IF 21.1
Huangwei Zhang,Yuluo Chen,Xiaoyu Ge,Kai Huang,Jiulin Wang,Jia-Qi Huang,Zhen Li,Yunhui Huang
High energy density and long cycle life are considered to be incompatible in battery design. Lithium metal batteries often have high energy density but poor cycle stability, while graphite (Gr)-based batteries usually have long cycle life but are limited in energy density. Therefore, mixing lithium with Gr as the anode is expected to balance high energy density and long cycle life. Reducing the negative/positive areal capacity (N/P) ratio to less than 1 is the simplest means to achieve a hybrid anode. The battery with sulfurized poly(acrylonitrile) (SPAN) as the cathode and an ultra-low N/P ratio (N/P=0.6) is expected to leverage the significant advantage of its cathode’s energy density far exceeding that of traditional cathodes, while maintaining stable cycling performance. This makes it a highly promising battery system. Through the design of anion-mediated electrolyte engineering, the capacity retention rate of the SPAN||Gr pouch cell at N/P=0.6 after 300 cycles was 92%, and its energy density was increased by 24% compared with that at N/P=1.1, achieving a balance between energy density and cycling stability. This strategy establishes N/P engineering coupled with electrolyte design as a scalable paradigm for next-generation energy-dense batteries.
研究领域:
储能
·
电化学
·
电池技术
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Yang Lin,Song He,Zhiyong Ouyang,Jianchao Li,Jie Zhao,Yanhe Xiao,Shuijin Lei,Baochang Cheng
Hierarchical porous carbon co-doped with heterogeneous atoms has attracted much attention thanks to sizable internal void space accommodating electrolyte, high-density microporous structure physically confining polysulfides (LPS), and heterogeneous atoms serving as active sites to capture LPS. However, solely relying on carbon material defects to capture LPS proves ineffective. Hence, metal compounds must be introduced to chemisorb LPS. Herein, cobalt ions are in-situ grown on the polydopamine layer coated on the surface of biomass-derived S, N, P co-doped hierarchical porous carbon (SNP-PC). Then a layer of nitrogen-doped porous carbon (MPC) dotted with CoSe nanoparticles is acquired by selenizing. Thus, a strong-polar/weak-polar composite material of SNP-PC studded with CoSe nanoparticles is obtained (SNP-PC@MPC@CoSe). Button cells assembled with SNP-PC@MPC@CoSe-modified separator enable superb long-cycle stability and satisfactory rate performance. An excellent rate capacity of 796 mAh g −1 at a high current rate of 4 C with an ultra-low capacity fading of 0.06% over 700 cycles can be acquired. More impressively, even in a harsh test condition of 5.65 mg cm −2 sulfur loading and 4 μL mg −1 ratio of electrolyte to active materials, the battery can still display a specific capacity of 980 mAh g −1 (area capacity of ∼5.54 mAh cm −2 ) at 0.1 C. This work provides a promising route toward high-performance Li-S batteries.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Sike Xie,Yujie Huang,Yanjian Xie,Wei Zhang,Yijian Zhong,Zhihao Liu,Zhixin Liang,Jintao Qi,Yangyang Huang,Jian Peng,Shaoming Huang
Sodium metal anodes (SMAs) are pivotal for high-energy-density batteries but suffer from uncontrolled dendrite growth and interfacial instability caused by infinite volume expansion and a fragile solid electrolyte interphase (SEI). Herein, an innovative strategy is proposed, in which a p-block matrix is in-situ formed from NiTe 2 nanocrystals onto N-doped carbon hollow microspheres (NiTe 2 @NC) during electrochemical activation to overcome these challenges. The p-block matrix with sodiophilic Na 2 Te and conductive metallic nickel effectively reduces the nucleation barrier and establishes bi-continuous ion/electron conduction networks, guiding uniform Na plating. Critically, Na 2 Te dominates the formation of a gradient inorganic-rich SEI with high Young's modulus and low Na⁺ diffusion barrier, significantly enhancing mechanical resilience and ion transport kinetics. Consequently, the NiTe 2 @NC electrode achieves exceptional cyclability (1,000 cycles at 1.0 mA cm − 2 /1.0 mAh cm − 2 with an average Coulombic efficiency of 99.79%). When configured in full-cells with a Na 4 Fe 3 (PO 4 ) 2 P 2 O 7 cathode, it maintains the capacity retention of over 96.1% (103.9 mAh g − 1 ) after 1,200 cycles at 10.0 C. Critically, the full-cell maintains superior electrochemical resilience with high discharge-capacity and >90% retention at low-temperatures (−20 and −40 °C), demonstrating exceptional practicality for sodium metal batteries. This work establishes a new paradigm for stabilizing reactive metal anodes via in-situ-constructed multifunctional interfaces.
研究领域:
储能与转换
·
电化学
·
材料科学
·
电池技术
·
纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2015
·Vol. 122
·期 1
·349-358
·
IF 2.042
Yu Guo-Min,Wang Li-Sheng,Sun Jian,Shao Xian-Zhao
A phosphorous flame retardant of phosphoric acid, P, P′-1, 4-phenylene P, P, P′, P′-tetraphenyl ester (PAPTE) was synthesized by diphenyl chlorophosphate and hydroquinone. The structural features of PAPTE were investigated with mass spectrometry, infrared spectroscopy, X-ray powder diffraction and nuclear magnetic resonance methods. The thermal behavior of PAPTE was carried out with thermogravimetric (TG) analysis instruments. The kinetic parameters, including the activation energy and pre-exponential factor of the decomposition process for the title compound, were calculated through the Friedman method, the Kissinger–Akahira–Sunose method and the Flynn–Wall–Ozawa method, while the thermal decomposition mechanism was also studied with the invariant kinetic parameters (IKP) method based on a set of TG data obtained at different heating rates. It was shown that the activation energies calculated for the decomposition reaction by different methods were found to be consistent with the conversion functions calculated by means of the IKP method which depend on a set of kinetic methods.
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2025
·
IF 4.7
Xinxin Li,Lianjie Du,Zhou Wan,Doudou Xu,Chen Liu
In this study, novel ZnO/BiOI/AgI ternary heterojunction photocatalysts were synthesized via a facile precipitation method to address challenges in organic pollutant degradation and microbial disinfection under visible light irradiation. The composites were systematically characterized (XRD, SEM, TEM, XPS, BET, UV-vis DRS, and PL), showing significantly enhanced visible light absorption, efficient charge carrier separation, and superior photocatalytic performance, compared to binary and single-component counterparts. The optimized ZnO/BiOI/AgI-3030 sample achieved 98.1% degradation of Rhodamine B (RhB) and 59.1% degradation of Norfloxacin (NOR) within 3 hours, attributed to the synergistic effects of the heterojunction structure, which facilitated efficient charge transfer and promoted the generation of reactive oxygen species (ROS). Furthermore, the composite demonstrated remarkable antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and methicillin-resistant Staphylococcus aureus (MRSA), with bactericidal rates exceeding 99.8%. Cytotoxicity assays revealed 88.79% inhibition of DLD-1 colorectal cancer cells. Mechanistic studies confirmed the formation of a unique n–p–n heterostructure, enabling effective charge carrier separation and strong redox capabilities. Additionally, the photocatalysts exhibited excellent stability and reusability over four consecutive degradation cycles, maintaining high catalytic efficiency. These findings underscore the potential of ZnO/BiOI/AgI ternary composites as efficient and sustainable photocatalysts for environmental remediation and antimicrobial applications.
✓ 已验证
产品关联
DOI
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
·
2024
·
IF 6.9
Sikai Deng,Weiwei Li,Qiyu Chen,Jianqun Shao,Junbo Zhang,Yuji Wang,Yinghuan Li
The mucus layer and intestine epithelium pose challenges to the bioavailability of orally administered paclitaxel (PTX). A novel P-glycoprotein inhibitor, (S)-2-decanoylamino-3-(1-naphthyl)propionyl-leucyl-valine (PgpI), was synthesized in this study. Its structure was characterized using 1 H NMR, 13 C NMR, ESI-MS and IR spectroscopies. The efficacy and in vivo toxicity of PgpI were comprehensively evaluated by R8-PEG@PLs&PgpI, i.e. , the oral combination of PgpI and octaarginine R8-PEG-DSPE modified PTX liposomes (R8-PEG@PLs), for lung cancer treatment. The joint forms between PgpI and R8-PEG@PLs were investigated and the affinity of PgpI for intestinal P-glycoprotein remained unaffected when combined externally with R8-PEG@PLs (R8-PEG@PLs&PgpI), compared to the diminished affinity for internal combination. The primary endocytic pathway for R8-PEG@PLs&PgpI in Caco-2 cells was the lipid raft, with increased percentage of macropinocytosis compared to unmodified PTX liposomes (PLs). The established physiology-based cellular kinetic models revealed that the net internalization rate of PTX was 2.3 times higher in R8-PEG@PLs&PgpI than in PLs, correlating with in vivo 2.2 times of antitumor rate. R8-PEG@PLs&PgpI may address the deficits of PLs in human lung A549 tumor-bearing mice due to the lower drug concentration than in normal mice. The external combination of R8-PEG@PLs&PgpI, offering maximal efficacy and security of PgpI, is promising for oral PTX delivery.
研究领域:
药学
·
肿瘤学
·
药物递送系统
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）