IONICS
·
2025
·
IF 2.6
Zhao Chenhao,Fan Jianming,Hu Zhibiao,Tu Fengzhang
Nickel selenides’ structural and composition diversity offers promising avenues for advanced battery anodes, yet their practical implementation faces persistent challenges of structural instability and sluggish kinetics. Addressing these limitations, We developed a spatially confined architecture using a template-directed hydrothermal method. This approach readily produced uniform Ni 3 Se 4 nanoparticles (size ~ 110 nm) encapsulated within conductive carbon nanoplates. Time-dependent XRD analysis confirms continuous selenization-driven phase evolution, while XPS/TGA verify the composite (26.8 wt% carbon) comprises Ni 2+ , Se 2 2− , and Se 2− species. This dual-role design—where carbon simultaneously serves as electron highway and volume-change buffer—enables breakthrough lithium storage performance: 586.2 mAh g −1 after 100 cycles (0.2 A g −1 ) with exceptional 375.5 mAh g −1 retention at ultrahigh 5 A g −1 . Electrochemical analysis demonstrates carbon spacers reduce charge-transfer resistance by > 40% versus bare counterparts. The strategically engineered interface provides critical insights for stabilizing conversion-type anodes. This is significant because, although the sodium storage performance remains challenging (167.9 mAh g −1 after 100 cycles), our study reveals fundamental differences when nickel selenide/carbon composites are employed as its anode materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xue-Hui Shi,Zhendong Zhu,Changlin Shen,Ya Li,Zhuang Qian,Yonghao Wu,Huifeng Chen,Qing-Qing Ye,Chaojie Hu,Yifan Song,Lei Wang,Zhimou Yang,Wenjie Ren
Fluorescent semiconductor quantum dots (QDs) had the potential to revolutionize biological imaging, but their applications were limited by the difficulties of obtaining biocompatible and high fluorescent-quality QDs due to the difficulty in manipulating surface properties. Here, we explored a facile and effective ligand exchange approach, which enabled sequential surface functionalization and phase transfer of QDs while maintaining QDs fluorescence intensity, size and morphology. Nitrosonium tetrafluoroborate (NOBF 4 ) was employed to substitute for the original organic ligands attached to the QDs surface, stabilizing the QDs in polar and hydrophilic media N , N -dimethylformamide for 60 days without aggregation or precipitation. This method was applicable to a wide range of QDs of different compositions, fluorescence emission wavelengths and sizes. The obtained hydrophilic QDs can subsequently be further functionalized with various capping molecules, which can endow the different surface functionalization of QDs according to the modified molecules employed. Among these, Ag 2 Te QDs after NOBF 4 treatment could undergo sequential surface functionalization, which achieved high-quality in vivo fluorescent imaging. This work offered a versatile ligand exchange strategy for QDs surface functionalization and was a significant step toward controllably engineering the QDs surface properties.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaobo Ma,Zeyu Yin,Zhen Cao,Baolong Shi,Xin Yan,Di Wu,Yueyue Wang,Chaoqing Dai,Min Hong
Self-powered operation and broadband spectral adaptability are critical for the next generation of photodetectors, enabling sustainable performance and multispectral functionality. The broadband wavelength response capability can expand the application scenarios of a photodetector. However, achieving both broadband photoresponse and accurate wavelength recognition remains a significant challenge. Herein, we develop a self-powered photoelectrochemical photodetector based on Bi 2 Te 0.6 Se 2.4 /MoSe 2 heterojunctions, capable of identifying 254, 365, 546, and 650 nm and simulated sunlight with the assistance of machine learning. To achieve precise energy band alignment with MoSe 2 and enhance the heterojunction interface, the selenium content in Bi 2 Te 3-x Se x and the mass ratio of the composite components were systematically optimized. These structural optimizations improve charge carrier separation and transport via band structure engineering and interfacial modulation, resulting in superior photoelectrochemical performance. By integrating material design with machine-learning-assisted wavelength discrimination, this study demonstrates a multidisciplinary approach to broadband detection and highlights the potential of such devices in optical communication, environmental monitoring, and multispectral imaging applications.
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Journal of Materiomics
·
2025
·
IF 9.6
Shaozhen Huang,An Wang,Jiahua Liao,Xiangli Zhong,Hongjia Song,Chao Zhong,Zhongming Wang,Yuejiao Chen,Kecheng Long,Jinbin Wang,Libao Chen
The high-energy-density lithium metal batteries (LMBs) is expected to drive the development of the low-altitude economy and electro vehicles. Nevertheless, the practical application of lithium anodes is hampered by well-known issues of unstable interfacial electrochemistry. For the cathode materials with or without Li in the lithium metal batteries, the mechanisms and problems faced on the interfacial stabilization regulation of the Li anodes are different. Herein, based on in-depth consideration of lithium-free cathode (S) and lithium-containing cathode (NCM811) systems, respectively, we present a friction coating strategy to create an interlayer on the lithium foil anodes (LS@Li and LSe@Li) and lithium boron alloy anodes (LS@LiB and LSe@LiB), which can compensate for sulfur loss and achieve dendrite-free lithium plating. Deeply discuss and reveal the differences of interfacial electrodeposition of LS and LSe interlayers based on the interfacial capacitance. By using this modified interface layer design, we have achieved simultaneous improvement in the performance of both Li||S batteries and Li||NCM811 batteries (lifespan increased by 1.3 times and capacity increased by 1.8 times for Li||S as well as lifespan increased by 2.8 times for Li||NCM811). This strategy forms a stable interlayer based on incomplete mechanochemical reactions, which paves a new way for high-energy-density LMBs.
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NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Bolong Li,Qian Ma,Pan Gao,Huayushuo Zhang,Xiaoxia Yang,Mingming Song,Chao Li,Xiaomei Jiang
Direct X-ray detection technology, enabled by its rapid response, high special resolution and simple system configuration, has witnessed widespread applications in medical imaging, industrial non-destructive testing and scientific research. This drives the need for high-performance X-ray detection materials aiming for high sensitivity and low detection limits. Sulfides face significant challenges in X-ray detection performance due to the low atomic number of sulfur, intrinsic defects such as sulfur vacancies, and surface oxidation susceptibility. Herein, a series of rod-like clustered Bi2S3/Bi2Se3 composites with tunable S/Se molar ratios were synthesized via a facile hydrothermal method. Precise control of Se incorporation effectively modulated the morphology of nanorod-assembled Bi2S3 clusters, enhancing their structural and optoelectronic properties. Notably, the optimized Bi2S3-8% Se composite exhibited enlarged dimensions and denser nanorod clusters, leading to significantly improved X-ray detection performance. Under 40 kV X-ray irradiation, detectors based on Bi2S3-8% Se pellets achieved a remarkable sensitivity of 1025.37 μC·Gyair-1·cm-2, representing 3.5 times higher than pure Bi2S3. Furthermore, its detection limit was drastically reduced to 130 nGyair·s-1. The enhanced performance is attributed to the formation of Bi2S3/Bi2Se3 heterostructures, which facilitate efficient charge separation and transport, thereby boosting X-ray photoconversion efficiency. These findings highlight the potential of Bi2S3/Bi2Se3 composites as high-performance direct X-ray detectors, offering a promising strategy for developing advanced radiation detection materials.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Ning Wei,Lipeng Zhang,Kexin Li,Yanyan Xu,Fan Zhao,Yaqiu Sun
Developing cost-effective, efficient, and durable oxygen evolution reaction (OER) electrocatalysts is essential for advancing water splitting to produce clean hydrogen, enabling sustainable energy conversion while reducing reliance on noble metals. Herein, we present a feasible approach for synthesizing a trimetallic selenide catalyst Ni 3 Se 2 @CoSe 2 @FeSe (Ni–CoFe–Se) with ultra-thin nanosheets morphology via the facile selenization of NiCoFe Prussian blue analogues (PBAs) to enhance the OER performance. By leveraging the synergistic interactions within the trimetallic selenide heterostructures and the rationally engineering rich heterointerfaces and defect, the electronic structure of Ni–CoFe–Se was optimized and high-density active sites were generated. The optimal Ni–CoFe–Se catalyst demonstrates excellent OER performance, achieving a low overpotential of 176 mV at 10 mA cm −2 in alkaline conditions, and exhibiting a low Tafel slope of 59 mV·dec −1 . The developed catalyst also possesses excellent stability and long-term durability in electrocatalytic applications. This work offers an effective strategy for designing non-noble metal catalysts through the collaborative integration of chemical composition tuning and structural engineering.
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Journal of Energy Storage
·
2025
·
IF 9.8
Xiao-liang Zhang,Jia-le Wang,Wan-ying Hou,Zhun Gao,Wen-chao Hou,Ya-hui Zhang,Shao-hua Luo,Qing Wang,Xin Liu,Sheng-xue Yan
This study centers on the synthesis and sodium-storage properties of CoSe 2 /FeSe 2 and its carbon-coated composite (CoSe 2 /FeSe 2 @C) derived from CoFe-based Prussian blue analogues (PBAs). The material offers high theoretical capacity for sodium-ion batteries (SIBs), but it suffers from severe structural degradation and poor electrical conductivity during cycling, leading to rapid capacity decay. Carbon coating is introduced to address these challenges by enhancing electronic conductivity, buffering volume changes, and improving ion diffusion kinetics. The CoSe₂/FeSe₂@C composite with a hollow nanostructure was obtained, which was prepared via co-precipitation, selenization, and carbon coating. Electrochemical measurements reveal that the composite boasts excellent electrochemical performance. It delivers a high reversible capacity of 443.5 mAh·g −1 at 0.1 A·g −1 , with 93.4 % capacity retention after 100 cycles, and 310.3 mAh·g −1 at 2 A·g −1 , maintaining 80.1 % retention after 500 cycles. The carbon coating significantly enhances conductivity, structural stability, and ion diffusion, endowing the material with superior cycling and rate capabilities. Through ex-situ XRD scanning and other characterization verifications, this work highlights the great potential of Prussian blue analogue (PBA)-derived materials as high-performance anodes for sodium-ion batteries.
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Nanomaterials
·
2025
·Vol. 15
·期 13
·1010
·
IF 4.3
Qiya Liu,Min Zhang,Xinsheng Yang,Tixian Zeng,Minghu Pan
Topological insulators (TIs) can be widely applied in the fields of ultrafast optical and spintronic devices owing to the existence of topologically protected gapless Dirac surface states. However, the study of ultrafast dynamics of carriers in TIs remains elusive. In this work, the carrier dynamics of Li-doped Bi2−xSe3single crystals were investigated by femtosecond (fs) transient optical spectroscopy (ΔR/R(t) signals). The temperature dependence for the relaxation rates of the electron–electron interaction and electron–phonon coupling is consistent with the results of electrical transport, which indicates the carrier dynamics of TI is highly related with carrier concentrations. We find that the carrier type and concentration of Bi2Se3can be tuned by Li doping, leading to a metal-insulation transition at low temperatures (T ≤ 55 K), indicating that electron–electron interactions are dominant at low temperature. For T > 55 K, electron–phonon coupling in the bulk carriers becomes the main electric transport mechanism.
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PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 45
·期 15
·117636
·
IF 6.2
Shaoqing Lu,Shengmao Sha,Jian Wang,Lulu Huang,Yu Liu,Jian Yan,Yucheng Wu
PbSe is a promising thermoelectric (TE) material with excellent carrier transport properties and an economic advantage due to the lower cost of selenium compared to tellurium, making it a potential alternative to PbTe. Improving its TE performance through dual-element doping represents a widely employed approach. In this study, the TE properties of n-type PbSe are improved through the simultaneous incorporation of Sn and Cu into the PbSe matrix. By precisely controlling the Pb content, we enable Sn dopants to occupy both interstitial sites and substitutional Pb positions, thereby significantly enhancing electrical conductivity . Meanwhile, interstitial Cu exhibits a temperature-dependent dissolution-precipitation behavior, dynamically turning the carrier concentration and improving electrical transport properties. The dual-doping strategy also introduces abundant point defects , effectively scattering phonons and reducing the lattice thermal conductivity . As a result, the electrical transport properties of the co-doped Pb 0.99 Sn 0.01 Se-0.7 %Cu sample are further improved by Pb regulation, achieving a power factor of 24.2 mW cm⁻¹K⁻² and a peak zT value of 1.80 at 728 K. These results demonstrate the effectiveness of the Sn and Cu co-doping approach in enhancing the TE performance of PbSe, offering promise for the development of cost-effective and high-performance TE materials.
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Energy & Environmental Materials
·
2025
·
IF 14.1
Wenying Wang,Xinglong Wang,Lin Bo,Wenying Zhou,Changcun Li,Zheng Zhang,Futian Liu,Degang Zhao
Cu 3 SbSe 4 -based compounds have attracted considerable potential in the realm of thermoelectric research owing to their distinctive physical properties and environmental compatibility. The material was efficiently synthesized via rapid microwave melting processing, aiming to improve its viability as a cost-effective thermoelectric option for practical applications. This study emphasizes the stepwise optimization of thermoelectric transport properties. The foremost effort involved improving transport electrical transport properties through the co-alloying of Sn and Te to determine optimal compositional configurations for superior thermoelectric performance. Iterative refinement enabled increased hole carrier concentration, which effectively addressed the intrinsic limitation of low electrical conductivity, thereby increasing the power factor by three times. Based on this foundation, a hierarchical multiscale structure was developed through the incorporation of AgCuTe as a secondary phase, which enhanced phonon scattering across multiple scales and consequently reduced thermal conductivity by 65% relative to pristine samples. The synergistic optimization of electronic and thermal transport properties culminated in a significant improvement in zT . The optimized Cu 3 SbSe 4 –1.0 wt% (Sn, Te)-2.5 wt% AgCuTe composite demonstrated a peak zT of 1.21 at 650 K and an average zT avg of 0.52 across the range of 300–650 K, contributing to a deeper understanding of the transport properties for chalcogenide-based thermoelectric compounds.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 44
·37953-37961
·
IF 9.5
Yao Dai,Yubo Luo,Yingchao Wei,Tianshun Xiong,Chengwei Sun,Wenjie Shu,Guanzheng Luo,Linyao Wu,Shuhui Zhang,Qinghui Jiang,Xin Li,Zheng Ma,Yao Luo,Yan Liu,Dan Zhang,Junyou Yang
Inorganic plastic thermoelectric materials have attracted much attention for breaking the brittle bottleneck of traditional inorganic thermoelectric materials. The Ag2(S, Se, Te) system is one of the most novel and promising thermoelectric semiconductors. To enhance its thermoelectric performance, substitution of Na for Ag is adopted to modulate the electrical and thermal transport properties of Ag2S1/3Se1/3Te1/3, through enhancing phonon scattering and effective mass. It enables us to achieve a record high average power factor (PF) of 7.4 μW cm−1 K−2 in the temperature interval of 300–500 K and a room-temperature thermoelectric figure of merit (ZT) of 0.50 and a peak ZT of 0.84 at 500 K in Ag2(S, Se, Te), respectively. In addition, the slip mode of Ag2S1/3Se1/3Te1/3 plastic deformation is also revealed for the first time, in which the crystal slip behavior is dominated by the {112}〈111〉 slip regime, instead of the conventional {110}〈111〉 view. The obtained high thermoelectric performance, as well as the maintained plastic performance, shows broad application prospects in waste heat recovery and wearable devices.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Rui Chen,Jinjie Wang,Yuhang Wang,Xin Liu,Zhiqi Yang,Yiping Ren,Yunan Yang,Tianshu Zou,Yan Yan,Liqi Wei,Biao Zhang,Lili Wang,Yining Chen,Hongxia Ma,Yan Cheng
The emergence of multidrug-resistant bacteria and persistent inflammatory responses have exacerbated the therapeutic difficulty of bacteria-infected pneumonia. There is an urgent need to find new strategies for synchronous sterilization and inflammation regulation for pneumonia. Herein, we developed maleimide-modified and alantolactone (Ala)-loaded copper indium selenide nanoparticles (ACIS NPs) to achieve near-infrared II (NIR-II) light-triggered photodynamic immunotherapy for multidrug-resistant Pseudomonas aeruginosa-infected pneumonia. After intranasal administration, they can quickly penetrate the mucus layer and then target P. aeruginosa and attach to its biofilm, achieving bacterial inactivation and biofilm elimination under NIR-II light irradiation. Simultaneously, ACIS NPs can also release Ala at the lesion site. They can not only stimulate the maturation of phagolysosomes in macrophages to increase phagocytosis efficiency but also downregulate the expression of NF-κB to reduce inflammatory cytokines and relieve the inflammatory level, thus promoting the polarization of macrophages toward an anti-inflammatory phenotype. Both in vitro and in vivo experiments have demonstrated that ACIS NPs can accumulate in lung tissues for killing P. aeruginosa and regulating macrophages, exhibiting high therapeutic efficacy against bacteria-infected pneumonia. This study demonstrates the potential of ACIS NPs as an alternative to traditional antibiotics, offers hope against bacterial resistance and the inhibition of biofilm formation, regulates the disordered inflammatory environment of the body, and provides a new strategy for bacteria-infected pneumonia therapy.
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