CARBON
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2026
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IF 12.7
Yuting Luan,Hao Wu,Xiaoyu Jiang,Xinyue Hou,Li Li,Yongfu Lian
Ru nanoparticles anchored on a heteroatom-doped carbon matrix enriched in pentagonal defects are prepared. • Synergy of pentagonal defects and heteroatoms tunes Ru electronic structure for HzOR and HER. • Ru on S-doped carbon enriched in pentagonal defects delivers superior HER and HzOR activity, surpassing Pt/C. • HzOR-assisted HER system needs only 0.485 V to reach 1 A cm −2 in a flow electrolyzer. Replacing the anodic oxygen evolution reaction with the hydrazine oxidation reaction (HzOR) enables energy-saving hydrogen production but demands efficient bifunctional electrocatalysts. Herein, an electrocatalyst based on ruthenium nanoparticles (Ru NPs) anchored on a uniquely engineered carbon matrix that integrates pentagonal defects and non-metal heteroatoms (Ru/PDXC, X = S, N or P) is designed. Through the synergistic coupling of pentagonal defects and non-metal heteroatoms, the electronic structure of Ru NPs is tailored, thereby enabling modulation of the adsorption energetics of key intermediates for both HzOR and hydrogen evolution reaction (HER). The synthesized Ru/PDSC catalyst delivers outstanding bifunctional activity, requiring a working potential of −70 mV for HzOR and an overpotential of 17 mV for HER to reach a current density of 10 mA cm −2 , outperforming commercial Pt/C. In a two-electrode HzOR-assisted HER system, a low cell voltage of 28 mV is sufficient to achieve a current density of 10 mA cm −2 . Moreover, the flow electrolyzer yields an industrially relevant current density of 1 A cm −2 , requiring a cell voltage of just 0.485 V. This study contributes a fundamental insight for the design and synthesis of advanced bifunctional Ru-based electrocatalysts by engineering the pentagonal defects and non-metal heteroatoms of a carbon matrix. Download: Download high-res image (458KB) Download: Download full-size image
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高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Jialei Dong,Jixing Bai,Liu Yang,Haiyan Zhang,Junbo Qi,Saina Zheng,Yue Wang,Huiyan Zhang,Qi Cao
Layer engineering is widely applied in two-dimensional materials to achieve tunable and optimal properties. Graphene oxide (GO) nanosheets, as carbon-based carriers, offer various advantages for electromagnetic wave (EMW) absorption, including high specific surface area, tunable conductivity, and abundant polar functional groups. Nevertheless, the regulation of layer numbers of GO-based composite absorbents, and comprehensive understanding of the underlying mechanisms influencing the EMW absorption properties remain insufficient. This study converts ZIF-67/GO into Co/rGO composites, and employs the layer engineering via ultrasonic-assisted calcination, to investigate the influences of GO layer numbers on the material’s EMW absorption performance. In the optimized Co/rGO, few-layer GO forms a better conductive network, while the well-dispersed Co nanoparticles introduce magnetic loss and assist in achieving impedance matching. As a result, this sample delivers considerable absorption performance, with a minimum reflection loss of −49.86 dB and an effective absorption bandwidth of 5.35 GHz. Following additional heteroatom doping, the Co/rGO composite could further achieve an absorption efficiency of above 99.9999% (−68.02 dB), which efficiently reduce EMW signals from highly reflective targets to background noise level. This study confirms the effectiveness of layer engineering in regulating electromagnetic properties and thereby enhance the absorption performance of carbon-based composites to achieve strong and broadband EMW absorption. Through layer engineering and doping treatment, Co/rGO composites achieve strong and broadband EMW absorption performance. This study comprehensively reveal the correlations between microstructure and electromagnetic properties of 2D Co/rGO composites. Download: Download high-res image (201KB) Download: Download full-size image
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高影响因子
VACUUM
·
2026
·
IF 4.3
Zhongping Dong,Kangting Sun,Heyou Yang,Shuyan Xiao
Magnéli phase Ti 6 O 11 ceramics were prepared by the solid-state reduction of TiO 2 with graphite. By adding zinc oxide during processing, dual energy-filtering systems comprising defect clusters and carbon layers were formed in the ceramics. The power factor showed a significant increase with the addition of zinc oxide during preparation. At 973 K, the sample with x = 0.03 exhibited a power factor of 380 μWm −1 K −2 , representing a 15% enhancement compared to the sample prepared without it. When sintered at 1400°C, the ceramic sample underwent gradual zinc volatilization, promoting the formation of defect cluster structures and carbon layers that filtered out low-energy electrons and consequently increased the absolute value of the Seebeck coefficient. Additionally, the zinc oxide acted as a fluxing agent, increasing the ceramic density by 4.5%, and the carrier mobility at 323 K was improved by 16%. The synergistic effect of the dual energy filtering mechanism and densification played important roles in the overall optimization of electrical transport performance in the materials. Finally, at 973 K, the sample with x = 0.03 achieved a thermoelectric figure of merit of 0.14, which was 12% higher than that of the sample without added zinc oxide.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 8
·e70481
·
IF 12.1
Long Jiang,Zhuang Wu,Qi Fan,Shengchao Wang,Wenjie Zhang,Lijing Yu,Dirong Gong,Yunlei Zhou,Kun Liang
en This link goes to a English section zh This link goes to a Chinese section Lithium–sulfur batteries have attracted extensive interest owing to their exceptionally high theoretical energy density and environmental benignity. However, their practical performance remains severely constrained by intrinsic challenges, including the polysulfide shuttle effect and large volume expansion during cycling, which markedly compromise energy efficiency and fall far short of the requirements for commercialization. To address these challenges, we modify a commercial separator (PP) with a dual-transition-metal Mo 2 Nb 2 C 3 MXene, whose surface terminations are precisely regulated via distinct etching strategies, thereby substantially enhancing the electrochemical performance of lithium–sulfur batteries. Compared with cells employing the pristine commercial separator, all PP@Mo 2 Nb 2 C 3 -based cells deliver superior rate performance at a high current density of 3C. Notably, the PP@Mo 2 Nb 2 C 3 -Cl cell retains a high discharge capacity of 589 mAh g −1 after 200 cycles, nearly doubling that of the cell with the commercial PP separator (307 mAh g −1 ). At all tested C-rates, the PP@Mo 2 Nb 2 C 3 -based cells delivered higher discharge capacities than those employing the commercial PP separator. Overall, modification of Celgard 2500 with the dual-transition-metal Mo 2 Nb 2 C 3 MXene effectively suppresses the polysulfide shuttle, enhances sulfur utilization, and substantially prolongs the cycle life of lithium–sulfur batteries. This work provides valuable insights into the rational design and application of MXenes as functional modifiers for advanced lithium–sulfur batteries. 摘要 en This link goes to a English section zh This link goes to a Chinese section 锂硫电池因其高理论能量密度和对环境友好受到广泛关注,但其在工作中产生多硫化物引起的穿梭效应、体积膨胀等问题严重影响电池的效率,远不足以达到商业化的要求。针对这些问题,本文研究了双过渡金属Mo 2 Nb 2 C 3 MXene对商用Celgard 2500进行改性,通过不同的刻蚀方法调控Mo 2 Nb 2 C 3 MXene端基,进而有效提升了锂硫电池的性能。与商用Celgard 2500隔膜相比,所有基于PP@Mo 2 Nb 2 C 3 的电池在3C倍率下均表现出更优异的倍率性能。值得注意的是,PP@Mo 2 Nb 2 C 3 -Cl电池在200次循环后仍保持589 mAh g −1 的高放电比容量,几乎是使用商用Celgard 2500隔膜电池(307 mAh g −1 )的两倍。在不同倍率下,PP@Mo 2 Nb 2 C 3 电池均表现出比使用商用Celgard 2500隔膜电池更高的放电比容量。总体而言,采用双过渡金属Mo 2 Nb 2 C 3 MXene对Celgard 2500隔膜进行改性,能够有效抑制多硫化物穿梭,提高硫利用率,并延长锂硫电池的循环寿命。这项工作为合理设计和应用MXene作为先进锂硫电池的功能改性材料提供了有价值的见解。
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高影响因子
MEASUREMENT
·
2026
·
IF 6.1
Yang Liu,Changyuan Xu,Yuqin Zhu,Jianxin He,Quanhua Xie,Yuanyuan He,Lei Wu,Dong Lai,Fei Fu,Qiongyao He,Bowen Jing,Guoqing Zhang,Nianbing Zhong
Moss-induced biocorrosion of stone heritage is a slow yet persistent deterioration process that alters the physicochemical conditions within porous stones, leading to structural damage and loss of cultural value. To conduct in-situ decoding of the pathogenic mechanism of mosses on sandstone, we developed a fiber Bragg grating (FBG)–based multi-parameter sensing system. The sensing system integrates three types of FBGs—temperature-sensing (T-FBG), strain-sensing (S-FBG), and polyacrylic acid–polyvinyl alcohol (PAA-PVA) coated pH-sensing FBG (H-FBG). The sensitivities and resolutions of T-FBG, S-FBG and H-FBG are 9.69 pm/℃ (0.01 ℃), 1.23 pm/με (0.1 με) and 38.63 pm/pH (0.02 pH units), respectively. A decoupling model based on a 3 × 3 sensitivity matrix was established to eliminate cross-sensitivity effects. During 60 days of Funaria hygrometrica colonization, the system captured dynamic variations including a maximal pH decrease of 0.5, a temperature fluctuation of 3.2 ℃, and an internal microstrain increase of 11.3 με. Microscopic and porosity analyses further confirmed the dual biochemical–mechanical degradation caused by metabolite secretion and rhizoid penetration. This work provides quantitative insights into moss-induced biocorrosion mechanisms and indicates the feasibility of optical fiber sensing as an early-warning strategy for preventive conservation of stone relics.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Hongbo Liu,Xiaohua Jia,Ziwei Li,Haojie Song
Traditional lignocellulose-based composite films, due to the random arrangement of the matrix and lubricating domains, fail to establish effective load-transfer networks and continuous lubrication pathways, thereby exhibiting inferior mechanical and tribological properties. Inspired by the ordered multilayer structure of nacre, highly dispersible graphene was prepared via intercalation and exfoliation using 1-hexadecyl-3-methylimidazolium chloride ionic liquid and subsequently blended with lignocellulose to form a crosslinked “brick-mortar” network. A nacre-mimetic multilayer composite film was then fabricated through vacuum-assisted directional deposition. Compared with LC, the LCIGP exhibits a simultaneous enhancement in mechanical strength (90.8 MPa), toughness (5.56 MJ/m 3 ), and self-lubricating properties (coefficient of friction of 0.106), with its tensile strength up by 58.7% and toughness by 71.6%, together with a 69.3% reduction in friction coefficient. Molecular dynamics simulations showed that the ionic liquid-functionalized graphene strengthened interfacial interactions with the lignocellulose matrix and increased the number of hydrogen bonds, with the simulated mechanical and tribological properties confirming the experimental results and providing further molecular-level understanding of the reinforcement and self-lubrication mechanisms.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zhenyu Tian,Yan Liu,Wanfeng Zhu,Shiji Wang,Wenjia Li
Metal-supported solid oxide fuel cells (MS-SOFCs) are recognized as a critical pathway toward high-efficiency energy conversion and global sustainable development, owing to high mechanical robustness, low cost. However, MS-SOFCs are still limited by gas diffusion. To address this challenge, this study proposes an open graded-pore structure Ni-Fe (GP-NF) support fabricated via a double layer tape casting with a phase inversion process. A Ni-Fe layer is cast onto a graphite sacrificial layer. Through a dynamic solvent/non-solvent exchange process, a graded-pore structure consisting of a skin layer and finger-like pore layer is formed within the Ni-Fe support layer, while the sponge pore layer is generated within the graphite sacrificial layer. Subsequently, the graphite sacrificial layer beneath the Ni-Fe layer decomposes at high temperatures, thereby directly exposing the finger-like pore to air and forming the GP-NF support. The GP-NF support exhibits a high porosity of 53.2%. The polarization resistance ( R p ) of the GP-NF support SOFC is 0.21 Ω·cm 2 , which is 19.2% lower than that of a conventional single-layer tape casting Ni-Fe support (NF, 0.26 Ω·cm 2 ) SOFC. Therefore, the GP-NF support SOFC achieves a peak power density of 1.05 W·cm -2 at 800°C, representing a 72.1% enhancement over the NF support SOFC (0.61 W·cm -2 ). This work demonstrates an improvement in gas transport through strategic structural design, providing a feasible pathway for developing high-performance, highly reliable, and cost-effective MS-SOFCs.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Lei Dai,Fan Wu,Dekai Meng,Weiwei Meng,Yuehua Li,Ling Wang
Flake-like La 2 CrO 6 /LaCrO 3 sensing electrodes (SEs) were synthesized via a one-pot molten-salt method (MSM) for impedancemetric NO 2 sensors based on yttria-stabilized zirconia (YSZ) electrolyte. The MSM-derived La 2 CrO 6 precursor underwent self-phase separation during high-temperature calcination, yielding a La 2 CrO 6 /LaCrO 3 composite SE with abundant heterointerfaces. Structural characterizations confirmed that the molten-salt-derived flakes provide a highly accessible surface and abundant La 2 CrO 6 /LaCrO 3 heterointerfaces after calcination, which effectively amplify the electrode/electrolyte interfacial electrochemical reactions toward NO 2 . Consequently, compared with single-phase LaCrO 3 , the La 2 CrO 6 /LaCrO 3 composite SE exhibits excellent sensitivity, which is attributed to the synergistic coupling effect in the sensing mechanism. La 2 CrO 6 provides strong adsorption sites, while LaCrO 3 ensures thermodynamic stability. By optimizing the temperature and time of the MSM reaction and the calcination parameters, the SE morphology and sensing performance were systematically improved. The optimal La 2 CrO 6 /LaCrO 3 sensing electrode, which was prepared by reacting at 500 °C for 1.5 h and then calcined at 800 °C, exhibited an outstanding sensitivity of 12.51 °/decade to NO 2 (25-700 ppm) at a working temperature of 400 °C. Additionally, the sensor exhibited superior repeatability, humidity resistance, and high anti-interference capabilities against various exhaust gases (H 2 , NH 3 , CH 4 , CO 2 , and NO). This work confirms that the molten salt method is a highly effective strategy for constructing high-performance composite sensing electrodes.
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高影响因子
IEEE SENSORS JOURNAL
·
2026
·
IF 4.5
Enyu Zhou,Dou Che,Yeshun Zhang,Hui Yan
Thiamethoxam (THI), a widely used neonicotinoid pesticide, is of crucial significance for the accurate detection of THI in terms of environmental and food safety. In this study, a portable fluorescent aptasensor was developed for the rapid and sensitive detection of thiamethoxam (THI). Based on the principle of fluorescence resonance energy transfer (FRET), the sensor system consists of THI-specific aptamers (UCNPs-apt) and upconversion nanoparticles (UCNPs) functionalized with graphene oxide (GO). Compared to conventional fluorophores, UCNPs exhibit minimal background fluorescence, thereby minimizing interference in complex matrices such as food samples. Key parameters, including GO concentration (0.15 mg/mL), UCNPs/GO incubation time (40 min), pH (7.4), and THI reaction time (30 min), were optimized to maximize fluorescence quenching and target-induced recovery. The sensor showed a linear detection range of 0.1–100 ng/mL and a limit of detection (LOD) of 0.088 ng/mL, with excellent selectivity and reproducibility. The method was validated using peach and mulberry leaf samples, yielding results consistent with ELISA (recoveries: 98.79–113.04%; relative standard deviations: 0.46–1.92%). The integrated portable system, leveraging aptamer specificity and compact instrumentation, enables on-site monitoring and addresses the urgent need for rapid field-deployable detection of THI residues.
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高影响因子
CARBON
·
2026
·
IF 12.7
Kaixuan Li,Jiali Wang,Yueteng Gao,Yang Xiao,Jin Liang,Yujie Zhu,Baohua Li,Feiyu Kang,Dengyun Zhai
text Graphite is considered as a promising anode for potassium ion batteries due to low voltage plateau and reversible intercalation mechanism. However, it suffers from low initial Coulombic efficiency because of the undesired interfacial chemistry. Herein, an effective chemical prepotassiation strategy with K-4,4′-dimethylbiphenyl complex in the co-solvent of 1,2-diethoxyethane and cyclopentyl methyl ether is rationally designed. With a low redox potential of 0.18 V, this reagent enables effective prepotassiation for graphite anode via a certain soaking time. Moreover, benefitting from the dual weak solvation structure, it manifests exceptional weak solvation capability, which effectively protects the graphite structure after de-potassiation. Consequently, the prepotassiated graphite anode achieves a high ICE of 98.79 %. When paired with 3,4,9,10-perylenetetracarboxylic dianhydride cathode in a full cell, it delivers outstanding cycling stability exceeding 400 cycles at 500 mA g −1 with a capacity retention of 77.14 %. Characterization results of the interfacial formation pathway reveal that the pre-intercalation steps promote the preferential decomposition of anions in conventional carbonate electrolyte, leading to a thin and robust interface. Our work shows new perspectives in designing feasible prepotassiation system for high performance potassium ion batteries.
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高影响因子
CORROSION SCIENCE
·
2026
·
IF 10.3
Yunlei Lv,Yongsheng Liu,Binghui Zhang,Mengzhu Liu,Shaolin Fu,Yejie Cao,Jingxin Li,Yansong Liu,Zbigniew Pedzich
HfB 2 -SiC-MoSi 2 composites with varying MoSi 2 contents were fabricated via gel-casting molding combined with reactive melt infiltration (RMI) at a relatively low temperature of 1500℃, achieving high density with porosity less than 1 % and uniformly distributed constituent phases. The composites exhibited excellent oxidation resistance during isothermal oxidation at 1650 °C, with mass gains of 15.40, 8.50, 7.38, and 11.31 mg/cm² after 100 h. The oxide layer grew thicker and tended to be uniform and dense over time. The oxidation process all followed a parabolic law. The addition of MoSi 2 significantly reduced the oxidation rate. The mechanism is attributed to the fact that the oxidation of MoSi 2 can promote the formation of additional SiO 2 glass, facilitating the rapid development of a dense protective oxide layer, thereby effectively blocking oxygen diffusion and suppressing the formation of a SiC-depleted layer. An appropriate amount of MoSi 2 , specifically 20 wt% MoSi 2 , optimizes the fluidity of the glass layer and enhances pore filling; however, excessive MoSi 2 reduces HfO 2 content and weaken viscosity. The formation of the HfSiO 4 phase with high-melting-point further improves the structural stability and oxygen resistance of the oxide scale, extending the service life at 1650°C. This work provides valuable guidance for designing oxidation-resistant materials for prolonged aerospace applications.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Rumeng Shao,Fanglin Liu,Chuanbo Li,Yang Wang
The human skin possesses the capability to detect thermal and mechanical stimuli simultaneously. Ingenious flexible sensors have been explored to mimic such functionalities by integrating multiple sensing elements or adopting multimodal sensing principles. However, the widespread application of these sensors has faced obstacles such as complicated manufacturing processes, signal mismatches between different components, and high power consumption. Here, we report a single-mode self-powered flexible sensor capable of simultaneously detecting both temperature and pressure stimuli through the seamless integration of complementary and compatible thermoelectric and triboelectric sensing mechanisms. The resulting hybrid thermoelectric–triboelectric sensor exhibits unique features that are difficult to achieve with existing approaches, including single-mode output (voltage signal only), significantly simplified operation (single-measurement device), ultralow power consumption, adaptive response behavior, and excellent discriminative capability for complex stimuli. Additionally, a deep learning regression model has been implemented to dispose of the single-mode signals, achieving an impressive accuracy of 94.7% in distinguishing contact objects. This work presents an innovative design that substantially simplifies both fabrication and operation while simultaneously enhancing the functionality and energy efficiency of next-generation flexible sensing systems.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）