POLYMER COMPOSITES
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2025
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IF 4.7
Feng Qi,Chunyang Di,Jun Gao,Shiying Tang,Fugang Qi,Biao Zhang,Nie Zhao,Honghao Ma,Xiaoping Ouyang
Explosive blasts are considered a distinct hazard in modern military conflicts, which cause extensive damage to buildings and people. Although conventional impact-resistant materials, consisting of metals/ceramics and polymers, have been researched systematically, the study of lightweight polymer matrix materials on explosive blast attenuation is limited. Therefore, we designed two main structural materials to evaluate the protective ability and mechanical properties of polyurethane elastomer (PUE) and polyurea (PUA) engineering materials under explosive blast loads. The first material was obtained by doping reinforced carbon nanofibers into PUE composites, and the second material was designed based on the mechanical properties of the PUE and PUA single-layer plates. The attenuation rate of PUE nanocomposites with different nanofiller masses was found to be reduced by 48.44%. Involving multilayers between different types of polymers, PUE/PUA composite plates exhibited an attenuation rate of 84.82% by altering the structure and materials based on their mechanical properties under explosive loads. Therefore, they can provide a favorable and practical strategy for the preparation and structural design of protection materials to withstand the shock wave in vehicle applications, gas explosions, and military events. Highlights Lightweight polymer matrix materials on explosive blast attenuation were studied systematically. Composite plates were made up of polyurea and polyurethane elastomer. Two main structural materials were designed. Carbon nanofibers were used to enhance the composites. PUE/PUA composite plates exhibited an attenuation rate of 84.82% under the explosion.
研究领域:
材料科学
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防护工程
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产品关联
DOI
高影响因子
Nature Communications
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2025
·Vol. 16
·期 1
·1-14
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IF 15.7
Zhang Pengbo,Liu Yuzhu,Wei Jie,Wu Zuoao,Song Xinmei,Ding Guochun,Wang Huaizhu,Liang Junchuan,Tie Zuoxiu,Jin Zhong
Aqueous organic redox flow batteries offer promising prospects for large-scale, high-safety, and cost-effective energy storage systems with no reliance on scarce mineral resources. However, challenges such as limited water solubility and poor stability hinder the practical application of organic redox molecules in aqueous organic redox flow batteries. Herein, we report the design and synthesis of an artificial redox-active α-amino acid molecule by functionalizing 1,5-dihydroxyanthraquinone with natural cysteine side group, which exhibits enhanced aqueous solubility and redox reversibility in alkaline aqueous organic redox flow batteries. Owing to its unique zwitterionic structure and abundant hydrogen bonds, the negolyte based on artificial α-amino acid molecule exhibits a very low capacity decay rate of 0.00025% per cycle (equivalent to 0.011% per day) under 1 M electron transfer. Theoretical simulations and spectroscopic analyses underscore the importance of the symmetric distribution and abundant hydrogen-bonding interactions of amphipathic amino acid side chains in enhancing the stability of the anthraquinone redox core and reducing its dimerization, as well as enhancing its water solubility and redox reversibility. This study presents the promising potential of nature-inspired principles in designing electrochemically stable, redox-active organic molecules, contributing to the advancement of large-scale, biocompatible, and sustainable aqueous organic redox flow batteries.
研究领域:
能源化学
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材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Dongdong Zhu,Lu Li,Yunlong Ji,Pan Wang
Flow battery is a safe and scalable energy storage technology in effectively utilizing clean power and mitigating carbon emissions from fossil fuel consumption. In the present work, we demonstrate an aqueous colloid flow battery (ACFB) with well-dispersed colloids based on nano-sized Prussian blue (PB) cubes, aiming at expanding the chosen area of various nano redox materials and lowering the cost of chemicals. Taking advantage of the two redox pairs of PB, the developed all-PB cell employing a low-cost dialysis membrane with the synthesized PB on both sides displays an open-circuit voltage (OCV) of 0.74 V. Moreover, when paired with an organic tetra pyridine macrocycle the cell with PB as positive electrolyte exhibits an OCV of 1.33 V and a capacity fade rate of 0.039 %/cycle (0.8 %/day). Redox-active colloids exhibit enduring physicochemical stability, with no evident structural or morphological changes after extensive cycling, highlighting their potential for cost-effective and reliable ACFB energy storage.
研究领域:
材料科学
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能源存储技术
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2025
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IF 2.6
Nie Yujia,Qian Guangren,Chen Youdong,He Jia,Zhou Wei,Xiao Hanning
The proton ceramic fuel cell (PCFC) is a cutting-edge technology for achieving carbon-free and efficient energy conversion. It has garnered significant attention in the clean energy sector due to its environmental adaptability and fuel compatibility in the low to medium temperature range of 500 to 700 °C. The intrinsic properties of cathode materials significantly affect the electrochemical performance of PCFC. In this study, a novel Sc-doped La 0.6 Sr 0.4 CoO 3−δ cathode was designed and synthesized using the sol–gel method, and its electrochemical performance in the PCFC was systematically investigated. Test results under hydrogen fuel conditions demonstrated that the single cell using the La 0.6 Sr 0.4 Sc 0.4 Co 0.6 O 3−δ cathode exhibited a respectable power output capability at 700 °C, achieving a peak power density (PPD) of 556 mW cm −2 and polarization impedance of 0.217 Ω cm 2 . Notably, the cell exhibited a performance degradation rate as low as 0.013% h −1 after 100 h of operation at a constant current discharge of 342 mA cm −2 , with the open-circuit voltage and PPD maintaining 98.5% and 107% of their initial values, respectively. This study provides valuable reference for the design of perovskite cathodes for PCFC.
研究领域:
能源技术
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材料科学
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电化学
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陶瓷工程
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产品关联
DOI
高影响因子
Joule
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2025
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IF 35.4
Chenyang Wei,Cheng Liu,Zeyu Zhang,Kai Sun,Chengkun Xing,Wenjuan Shi,Youyong Li,Jian-Feng Li,Bo Zhang
Enhancing current density is a crucial strategy for reducing costs and improving the efficiency of green hydrogen production through water electrolysis. However, mass diffusion and proton transport limitations under high-current densities remain serious obstacles. Here, we proposed a novel strategy to construct a three-dimensional mesoporous skeleton structure of IrO 2 to address the limitations. By utilizing the dynamic loading of Ir nanoparticles during the La 2 O 3 template reconstruction process, high-density embedding of ultra-small Ir nanoparticles in the template is achieved. During the electrochemical process, in situ oxidation of Ir nanoparticles combined with template leaching results in the formation of a three-dimensional, mesoporous IrO 2 structure. The developed catalyst enables proton exchange membrane water electrolysis (PEMWE) to achieve stable operation for over 2,700 h at a current density of 5 A cm −2 with a voltage degradation rate of ∼0.38 μV h −1 , which meets the 2030 EU Clean Hydrogen JU target and 2026 US Department of Energy (DOE) target.
研究领域:
能源材料
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电化学
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纳米技术
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催化
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氢气生产
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水分解
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膜技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
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2024
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IF 24.4
Qiaowei Lin,Jiaxing Liang,Ruopian Fang,Changlong Sun,Aditya Rawal,Jun Huang,Quan-Hong Yang,Wei Lv,Da-Wei Wang
Electrocatalysts can optimize the sulfur/sulfide reaction kinetics in Li–S batteries to compete with the loss of lithium polysulfides (LiPSs) caused by the shuttling effect. However, the design rationale of electrocatalysts to drive roundtrip sulfur/sulfide conversion is lacking. Here, pairing Lewis acidic and Lewis basic active sites to reach collective adsorption of LiPSs and simultaneous activation of electrophiles and nucleophiles in LiPSs is proposed. This concept is validated by doping polyaniline with protonated metatungstate anions, which enables reduced activation energies for both sulfur reduction reaction and sulfide oxidation reaction and results in significantly improved kinetics. Such electrocatalysts enable a Li–S battery to reach a low capacity-decay rate of 0.029% per cycle for 1000 cycles. This work would offer insights into battery technologies where sulfur electrocatalysis will play pivotal roles.
研究领域:
材料科学
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电化学
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电池技术
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催化
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Xianfeng Guan,Wanzhen Wu,Shuyu Zhang,Guangpeng Ma,Xinpu Zhou,Cuicui Li,Di Yu,Yu Luo,Shuang Wang
ABSTRACT Achieving the right balance between electrical conductivity and long-term reliability in high-temperature proton exchange membrane (HT-PEM) technologies contributes to sustainable energy recycling. This study involves a groundbreaking effort to create amphiphilic polybenzimidazoles by incorporating 2-isocyanatopyridine into hydroxy-polybenzimidazole (OHPBI). A high hydrogen-bond density network is constructed through two-by-two interactions between the hydroxyl group, the imidazole molecule and quaternary ammonium group. Quaternary ammonium polymeric ionic liquid is introduced to maintain high phosphoric acid (PA) doping and PA retention. The PA retention of the amphiphilic polybenzimidazole membrane is 87.5% after 240 h at 160 °C/0% RH. Furthermore, the peak power density of the amphiphilic polybenzimidazole membrane reach 837.8 mW cm -2 at 180 °C and the voltage decay rate is 0.23 mV h -1 after long-term operation. More specifically, the amphiphilic polybenzimidazole membranes show a conductivity of 138.9 mS cm -1 at 180 °C. This indicates that the amphiphilic polybenzimidazole membrane has both high power output and long-term stability. This work introduces an innovative method to improve the efficiency of PBI-based HT-PEM.
研究领域:
材料科学
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化学工程
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能源技术
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聚合物化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Meng Zhang,Shiqun Geng,Gaojie Yan,Jincheng Dong,Haifeng Ji,Yi Feng,Xiuli Hu,Binyuan Liu,Xiaojie Zhang
Problems such as cathode collapse caused by volume change and shuttle effect of lithium polysulfides (LiPSs) limit the commercialization of Lithium-Sulfur (Li-S). Herein, we developed a sulfhydryl-containing multifunctional binder prepared by the nucleophilic ring-opening reaction of thiocyclic carbonates with amino groups. The binders (CNP-T and CNP-F) form sulfur-containing polymers with sulfur through the wet-slurry process, thereby effectively suppressing the shuttle effect. The abundant polar functional groups (e.g., -NH 2 , -CS(NH)-) in CNP-T and CNP-F can effectively adsorb LiPSs to weaken the shuttle effect, which is confirmed by both density functional theory (DFT) and experimental results. At the same time, their own hyperbranched network structure can also limit the volume change of the sulfur cathode. Therefore, the Li-S battery exhibits an initial specific capacity of 924.02 mAh/g and a decay rate of 0.033% when cycled at 1C for 500 cycles.
研究领域:
材料科学
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电化学
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电池技术
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聚合物化学
✓ 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）