JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Kai Lan,Ting Feng,Zheng Gong,Honglei Zhang,Fengzhang Ren,Fang Wang
To break the inherent limitations of poor conductivity and electrochemical activity in transition metal selenides, electronic structure engineering is regarded as the most feasible strategy. Herein, leveraging the advantage that high mobility of Cu 2+ can easily form non-stoichiometric compounds, a rapid coordination-coupled one-step selenization strategy is employed to prepare Cys-CS-Se composite, which is Sb/S co-doped and rich in copper vacancies. The active groups of cysteine can coordinate with Cu 2+ to fabricate a sulfur-containing precursor with an ordered stacked nanosheet. This unique nanostructure facilitates the exposure of active sites and electron transfer, thereby accelerating reaction kinetics. Notably, the simultaneous incorporation of Sb/S can not only modulate the electronic structure of Cu 2-X Se, enhance its intrinsic electrical conductivity, and enable rapid charge transfer, but also provide additional sodium adsorption sites, thereby boosting sodium storage capacity. Furthermore, the formed Cu-vacancies further enhance sodium adsorption capability and create more adsorption sites. Based on these advantages, the optimized Cys-CS-Se offers an outstanding initial discharge capacity of 498.4 mAh g −1 at 0.1 A g −1 , excellent cycling performance (318 mAh g −1 over 550 cycles at 3 A g −1 ), and rate capability. This work provides a reference for the design of novel transition metal chalcogenide anodes with dual doping.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Haoyu Yue,Zhongnan Guo,Wenjing Guo,Ruonan Yao,Shuang Zhen,Qiansu Ma,Ming Chen,Jiawei Lin,Wenxia Yuan
The high-entropy strategy offers a viable pathway to activate the inert basal plane of transition metal dichalcogenides (TMDs) for electrocatalysis. This work demonstrates that the “lattice distortion effect”, one of the core effects of high-entropy materials, plays a crucial role in activating the basal plane of TMDs. A high-entropy diselenide (ReNbTaMoW)Se 2 (denoted as HESe 2 ) is synthesized via solid-state reaction. Single-crystal X-ray diffraction and atomic resolution scanning transmission electron microscopy reveal a unique fivefold-modulated structure in HESe 2 , which unexpectedly distorts the rigid trigonal prismatic motif. HESe 2 exhibits exceptional activity for hydrogen evolution reaction (HER), showing a low overpotential of 31 mV at a current density of 10 mA cm −2 , comparable to state-of-the-art precious metal catalysts. In situ X-ray photoelectron spectroscopy indicates that the distorted structure of HESe 2 remains stable during the HER process. A proton exchange membrane (PEM) electrolyser assembled with HESe 2 cathodic catalyst shows competitive performance and durability with negligible degradation over 400 h. Density functional theory calculations reveal the electron accumulation regions induced by lattice distortion as high-activity sites, thereby driving the augmented HER performance of HESe 2 . This work presents a universal strategy for boosting the basal plane activity of layered materials through unique lattice distortion effect.
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Rong Zou,Wenwu Liu,Binhang Zhao,Jie Zhang,Lei Zhao,Xuejun Ren,Haifei Zhang,Fen Ran
Sulfur-containing polymers are promising cathode materials for lithium batteries, offering a novel pathway toward high-energy batteries. Moreover, tuning the frontier orbital energy levels of sulfur-containing polymers can accelerate the electrochemical reaction kinetics. Herein, an organic cathode material containing selenium is synthesized using a selenium sulfide solid solution via a previously proposed thiol-sulfur click chemistry reaction, which is a rubber-like material with good mechanical properties. According to front-line orbital theory, the introduction of a selenium group VI element like sulfur leads to sp3 hybridization and S–Se covalent bond formation. Owing to the electronegativity disparity between sulfur and selenium, electrons accumulate near sulfur atoms, creating nucleophilic sites and continuous negative regions that promote Li+ transport. As a result, the Li+ diffusion coefficient increases from 9.7 × 10–13 cm2 S–1 to 2.7 × 10–12 cm2 S–1. The bandgap narrows from 4.14 to 3.89 eV, facilitating the lithiation process and enhancing electrochemical performance. Among the cathode materials with different selenium contents, the fabricated materials exhibit a superior initial capacity of 580 mAh g–1 at 0.05 C and longer cycle stability. This study reveals how doping-modulated frontier orbital energy levels can be employed to enhance reaction kinetics, offering insights for improving sulfur containing polymers–lithium batteries’ performance.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Advanced Dielectrics
·
2025
·
IF 2.4
Weixiang Huang,Shiliang Kang,Long Chen,Yanqing Fu,Linling Tan,Chengwei Gao,Wenjie Xie,Changgui Lin
Fiber infrared evanescent wave-temperature dual sensor can detect both organic molecules and temperature, demonstrating potential applications in healthcare, petrochemical industries and advanced energy storage systems. However, current fiber sensors are strictly limited to either infrared evanescent wave or temperature sensing, primarily due to the absence of suitable fiber sensing media. Here, a high-performance infrared evanescent wave-temperature dual sensor based on single Ge 2 1 Se 3 Te 7 6 chalcogenide glass fiber is developed. The obtained fiber exhibits a high Seebeck coefficient of 1410 μ V/K, a precise temperature resolution of 0.03 K, a fast response time of 6 s and superior infrared evanescent wave sensing performance. Furthermore, the fibers can be integrated into a textile to detect temperature distribution and simultaneously detect organic substances such as ethanol and urea. These findings highlight that the fiber with superior infrared evanescent wave-temperature sensing performance may find potential applications in multifunctional sensing.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Zhenliang Li,Yuan Ren,Yujian Rao,Rui Ma,Ao Xu,Zejun Han,Tuo Zhang,Xueqiong Cui,Qiongfeng Shi,Li Tao
A rapid and highly sensitive detection of harmful gas molecules is crucial in artificial olfaction (electronic nose), which plays a significant role in areas such as environmental monitoring and healthcare. However, it remains a significant challenge to construct highly sensitive molecular sensors with fast response at room temperature due to the limitations in structures and properties (e.g., porosity, crystallinity, and carrier mobility) of the sensing materials. Herein, this study proposes a facile method to enable highly crystalline mesoporous WSe2/WO3 (m-WSe2/WO3) semiconductor heterostructures through controllable interfacial self-assembly of polyoxometalate (POM) clusters and amphiphilic block copolymers combined with a thermal-assisted conversion process. It allows uniform pore size, open channels, large specific surface area, highly crystalline framework, and abundant transition metal chalcogenide/metal oxide heterojunction interfaces. The m-WSe2/WO3-based chemiresistive semiconductor sensor achieves efficient detection of NO2 at room temperature, including ultrafast response (5 s), high selectivity (SNO2/Sgas > 5), high sensitivity (62.5%@50 ppm), low detection limit (50 ppb), and long-term stability (>30 days). Thanks to the synergistic improvement of sensing dynamics between mesostructure and heterojunction, such a few-second response time has been reduced by half of the reported values in most existing counterparts based on two-dimensional materials. Our work paves the way for the application of high-performance and cost-effective molecular sensors in artificial olfaction, electronic skins, and wearable integrated circuits at room temperature.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuhan Cui,Jing Sun,Yining Wang,Lijie Zhao,Jiawei Wang,Yue Song,Ruixiang Xu,Zhongmin Su
Reasona ble structural frame modification and further optimization design of traditional substrates are favorable schemes to break through the current insufficient energy density of electrode materials for supercapacitors. Transition metal chalcogenides are being investigated as electrode materials for supercapacitors due to their exceptional energy storage capacity. However, single transition metal selenides, transition metal sulfides, or traditional transition metal selenides all have the problems of insufficient conductivity and structural collapse caused by charging and discharging, which limit their path to marketization. In this work, an isomorphic cobalt‑manganese‑selenium sulfide supported by MXene quantum dots (MQDs) based on ZIF was developed using a two-step hydrothermal method to address the energy storage disadvantages of chalcogenides. Thanks to the unique isomorphic skeleton design (enhancing the synergistic effect of selenium and sulfur) and the advantages of MQDs (short-range ion diffusion path) wrapped inside and outside selenium sulfide, MQDS@Mn 0.6 Co 0.4 Se/Mn 0.77 Co 0.23 S composite as supercapacitor electrode broke through the voltage window (0.5 V) of transition metals in alkaline environment, and its charge-discharge window was as high as 0.55 V when the specific capacitance was 1 A g −1 . The assembled asymmetric supercapacitor (ASC) can operate within a large voltage window of 1.6 V. When the power density reaches 817.52 W kg −1 , the energy density is as high as 83.91 Wh kg −1 . At 1.6 V (0.1 V above traditional), capacitance retention drops by only 13.09 % over 10,000 cycles. This study proposes a novel approach to the rational design of transition metal chalcogenides and the transformation of MXene substrates, resulting in electrode materials with prolonged charge-discharge times and a wide voltage window. This discovery provides a new avenue for developing advanced supercapacitor electrodes.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULAR BIOLOGY REPORTS
·
2025
·Vol. 53
·期 1
·82
·
IF 2.8
Qi Xue,Hu Yanjun,Yang Jinghan,Jiang Mingxuan,Zhang Junhao,Du Yanting,Hu Changmin
Background The pathogenesis of bovine mastitis involves inflammation and cell death, with pyroptosis being a key factor in its development. Currently, antibiotics remain the primary therapeutic option for bovine mastitis, however, the increasing prevalence of antibiotic resistance constitutes a major public health threat. Selenium (Se) has been reported to alleviate inflammation primarily through its antioxidant properties, but the mechanism by which Se regulates pyroptosis in bovine mastitis remains unclear. Methods and results In this study, an in vitro mastitis model was established by infecting MAC-T cells with inactivated Staphylococcus aureus ( S. aureus ) (MOI = 10, 12 h). The results revealed that the mitochondrial membrane potential of the MAC-T cells in the infection group decreased significantly. Moreover, the accumulation of Reactive oxygen species (ROS) was accompanied by the activation of NOD-like receptor family containing pyrin domain 3 (NLRP3), the expression of the pyroptosis-related genes gasdermin D amino terminal fragment (GSDMD-N), and cysteine aspartate specific protease 1 (cleaved-caspase 1). Pretreatment with Se, the NLRP3 inhibitor MCC950 and the antioxidant N-acetylcysteine (NAC) attenuated mitochondrial damage, ROS accumulation, and the inhibition of pyroptosis. An in vivo mastitis model was established in mice fed a high-selenium diet (containing 1.5 mg/kg Se) and intramammarily injected with inactivated S. aureus (1 × 10 8 CFU/mL). Histological analysis revealed intact alveolar structure and reduced inflammatory cell infiltration in mice fed the high-selenium diet. The expression of the inflammasome NLRP3 downregulated, and the expression of GSDMD-N, a direct executor of pyroptosis, upregulated. Conclusion Our in vitro and in vivo results confirmed that Se alleviate mitochondrial damage and pyroptosis by inhibiting the NLRP3 pathway, ultimately alleviating mastitis. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Yi Feng,Zhi-Yuan Song,Yuan-Na Zhu,Cai-Li Lv,Lin-Lin Fan,Yun-Dong Cao,Hong Liu
Rechargeable potassium-ion batteries (PIBs) have emerged as promising sustainable alternatives to lithium-ion systems. However, their practical application is limited by the scarcity of high-performance electrode materials that can effectively accommodate the relatively large size of K+ ions. Herein, we present a defect-engineering strategy aimed at activating the basal planes of MoSe2 through the controlled introduction of selenium vacancies (VSe-MoSe2) using a plasma-mediated discharge etching process. The optimized vacancy concentrations substantially narrow the bandgap from 1.43 to 0.38 eV, enhance electronic conductivity, and generate multidimensional K+ ion diffusion pathways. Furthermore, the introduction of structural defects can significantly enhance the pseudocapacitive contribution of the VSe-MoSe2 electrode. In situ XRD, ex situ XPS/TEM, and DFT calculations collectively elucidate a highly reversible conversion mechanism for potassium storage, confirming the critical role of selenium vacancies in stabilizing the host structure and facilitating rapid K+ ion adsorption. Consequently, the optimal electrode exhibits a high reversible capacity of 286.2 mAh g−1 at a current density of 1 A g−1 after 100 cycles and maintains a capacity of 134.9 mAh g−1 even at 5 A g−1 after 300 cycles. This study highlights the transformative potential of precisely engineered defects in unlocking durable, high-rate potassium storage within layered transition metal dichalcogenides.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Zheng Jiang,Shengqiang Cui,Shan Wang,Yajing Wang,Xinxin Wang,Guangmeng You,Xueke Gu,Pengli Si,Gui Yang,Chao Wang
Enhancing phonon scattering has emerged as an effective strategy for suppressing lattice thermal conductivity (κL), thereby improving the performance of bulk thermoelectric materials. Compared with other strategies, the primary purpose of introducing more grain boundaries is to enhance the scattering of mid to low-frequency phonons, consequently reducing the κL at the near-room temperature, which proves advantageous for enhancing the thermoelectric properties of Bismuth telluride-based materials. In this study, MnS/MoS2 as a heterojunction compound was incorporated into a Bi2Te2.7Se0.3 matrix, resulting in the formation of a unique (Bi2Te2.7Se0.3 → MnS → MoS2) three grain boundary interface structure, which significantly enhanced phonon scattering. Additionally, the MnSe secondary phase was observed and confirmed through both X-ray diffraction (XRD) and transmission electron microscopy (TEM). The introduction of 0.3% MnS/MoS2 leads to a reduction in the κL from 0.58 W m−1 K−1 to 0.41 W m−1 K−1 at 300 K. Simultaneously, the synergistic optimization of electrical properties results in a PF of 33 µW cm−1 K−2 at 300 K. Finally, a high ZT value ∼1.17 (375 K) and an average ZTave ∼ 1.08 (300–500 K) were achieved for Bi2Te2.7Se0.3–0.3% MnS/MoS2, which was enhanced 54% and 57% compared with those of the Bi2Te2.7Se0.3 alloy, respectively.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiayu Gu,Chen Wei,Jinhao Xu,Xiu Zhang,Chunjie Zhu,Da Teng,Leyi Liu,Meizhi Lan,Wenjing An,Yingying Xu,Pengxiang Qiu,Shuxian Hu
This study demonstrates a strategic paradigm in photocatalytic nitrogen fixation by engineering semiconductor hole oxidation dynamics to circumvent ammonium degradation. Diverging from conventional approaches focused on light absorption and carrier mobility enhancement, we develop a sacrificial agent-free system leveraging attenuated hole oxidation capacity to fundamentally suppress oxidative depletion of NH 4 + . Bi 2 O 2 Se (BOS) serves as an archetypal catalyst, revealing mechanistic correlations between weak hole oxidizing environments and nitrogen reduction efficiency. Experimental analyses confirm BOS's superior performance over traditional photocatalysts, attributed to its intrinsic capacity to prevent NH 4 + oxidation while enabling effective product enrichment. Remarkably, the catalyst maintains equivalent nitrogen fixation efficiency in ambient air and inert atmospheres, demonstrating exceptional oxygen compatibility. Furthermore, BOS exhibits panchromatic photon utilization extending into near-infrared regions (AQE = 0.12 % at 700 nm). The unmodified bulk-phase characteristics of BOS highlight its inherent catalytic superiority, challenging conventional modification-dependent catalyst design frameworks. This work establishes oxidation potential modulation as a critical determinant in photocatalytic nitrogen fixation while providing a material platform and conceptual blueprint for sustainable ammonia synthesis technologies.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Sana Nazeer,Syed Ejaz Hussain,Junjie Qi
Semiconducting 2H-phase MoS 2 often performs poorly in the hydrogen evolution process and has low conductivity. Se increases stability, electrical conductivity, and catalytic activity when added to MoS 2 . Using carbon cloth as the substrate and several sulfur sources, such as Thioacetamide, L-cysteine, and Thiourea, this study developed an effective hydrothermal synthesis process to produce a MoS 2(1-x) Se 2x ternary alloy. When used as an electrocatalyst for HER, the TAA-MoSSe/CC alloy with an S/Se balance of 1:1 reaches at overpotential of 120 mV at the conventional current density of about 10 mA/cm 2 , whereas the observed Tafel slope value is 41 mV/dec. Furthermore, the strength of the Ternary alloys covered by the present investigation is enhanced by testing for air stability and durability. According to the characteristics of these ternary alloys, the creation of MoS 2(1-x) Se 2x depends critically on the temperature at which the sulfur precursor decomposes. Improved HER catalytic performance results from the rapid release of sulfur ions from sulfur precursors, which decompose at lower temperatures. These sulfur ions replace more Se ions in MoS 2(1-x) Se 2x .
✓ 已验证
产品关联
DOI
高影响因子
Microstructures
·
2025
·Vol. 5
·期 3
·N
·
IF 9
Fulong Liu,Yuqing Sun,Zhihao Li,Panpan Peng,Chunlei Wang,Hongchao Wang
Quaternary chalcogenides have garnered considerable interest within the field of thermoelectric due to their intrinsic low thermal conductivity, wide bandgap and high element enrichment advantages. In this work, the thermoelectric performance of Cu2MnSnSe4 was enhanced by co-optimizing the carrier concentration and lattice thermal conductivity through self-doping with Cu and doping with Te. A series of Cu2MnSnSe4 and Cu2.1Mn0.9SnSe4-xTex (x = 0, 0.01, 0.05, 0.10) samples were prepared by ball-milling and hot-pressing methods. The carrier concentration of the samples was significantly increased after Cu self-doping, leading to optimized electrical transport performance. The notable reduction in lattice thermal conductivity was attributed to the scattering effect caused by Te substitution-induced point defects. At 673 K, the lattice thermal conductivity of the Cu2.1Mn0.9SnSe3.9Te0.1 sample obtained the lowest value of 0.62 W m-1K-1. Finally, it achieved a maximum zT ~ 0.5 at 673 K in the Cu2.1Mn0.9SnSe3.9Te0.1 sample, roughly twice that of the Cu2MnSnSe4 sample.
✓ 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）