Nanomaterials
·
2026
·Vol. 16
·期 14
·861
·
IF 4.8
Bing Yang,Qiao Guo,Hongmin Li,Gang He,Shanshan Jiang,Longwei He,Xiang Li,Peng Yu
In this work, a post-annealing rapid cooling and aging treatment process is innovatively proposed to build high-performance zinc tin oxide (ZTO) thin-film transistors. The relaxation effect on the abundant oversaturated oxygen vacancy deep-level traps contributes to the shallow donor formation during the aging period. The TFTs aged in an air environment for 10 days possess significantly improved electrical performance, including a clearly increased on/off current ratio of 7 × 106from 2 × 104and a markedly increased saturation mobility of 5.9 from 2.2 cm2·V−1·s−1, verifying the facile method to improve the electrical property of polycrystalline TFTs, and the method has been investigated using the grain boundary defect relaxation model and energy band theory. It is worth mentioning that the TFTs aged under vacuum conditions realized more effective regulation and control on off-state current and demonstrated a wider aging time window. The distinctive illumination interface stability was studied in depth using a charge trapping model and electron–hole pair model, which embody the potential application in photoelectric detectors.
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WOOD SCIENCE AND TECHNOLOGY
·
2026
·Vol. 60
·期 3
·53
·
IF 3.2
Wu Ling,Liu Yang,Zhang Tingwei,Jin Yongcan,Xiao Huining
Silicon (Si) is regarded as one of the most promising lithium-ion storage materials owing to its large theoretical specific capacity (4200 mAh/g) and low operating potential. However, during lithiation/delithiation processes, the tremendous volume change (~ 300%) and poor conductivity of Si materials restrict their large-scale application in the field of electrodes. Herein, a novel encapsulating strategy was proposed to prepare silicon/carbon composites (650-4-glu). The self-assembly process, driven by electrostatic interaction between lignosulfonate and chitosan, initially enwrapped silicon nanoparticles. Furthermore, glucose was introduced through simple grinding with the lignin-Si-chitosan assembly. After carbonization, physicochemical characterization revealed that the carbon framework derived from lignin-chitosan largely coated silicon, and glucose-derived carbon served as a supplementary phase to enhance the encapsulation effect. The formation of Si-O-C linkages between carbon and silicon tightly bound the silicon particles, which was crucial for improving cycling stability and rate performance. Sample 650-4-glu exhibited an excellent specific capacity, retaining 734.3 mAh/g after 200 cycles at 0.5 A/g and 584.1 mAh/g after 500 cycles at 1.0 A/g. This work demonstrated a sustainable and effective approach for utilizing lignosulfonate, a byproduct in the papermaking industry, in high-performance lithium-ion battery electrodes.
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Nature Communications
·
2026
·
IF 18.1
Yi Xuannuo,Han Haoran,Chang Aosheng,Liu Ziyuan,Hui Qingxue,Zhu Chongqin,Zhang Zhaoqiang,Liu Shasha,Wang Wei
The confinement effect is increasingly recognized as a critical factor influencing guest–framework interactions in molecular sieves, yet its impact on adsorption kinetics remains largely unexplored. Conventional ensemble measurements on milligram-scale particle assemblies yield apparent adsorption kinetics that conflate dynamic molecular interactions with macroscopic mass transport. Here, we present an optical imaging approach that quantitatively monitors interaction-dominated adsorption by reducing the sample size to the single-nanoparticle level (sub-picogram scale). The results enable the determination of intrinsic rate constants and activation energy barriers for elementary adsorption and desorption steps. A confinement-induced reversal of adsorption kinetics, relative to proton affinities, is observed among homologous light olefins on the same ZSM-5 nanoparticle. This finding reveals that confinement—rather than interaction strength—primarily governs adsorption kinetics at the single-nanoparticle level and provides a general platform for probing and rationally designing molecular sieves for diverse applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Chong Xu,Junjie Fu,Ye Wang,Dongming Jiang,Changwei Cao,Miao Gao,Yun Fu,Guang Ma,Shuang Liu,Gong Cheng,Dongyuan Zhang,Yan Jia,Yongfeng Li
Silicon nanoparticles (Si NPs) are regarded as one of the most promising anode materials for lithium-ion batteries (LIBs) owing to their exceptionally high theoretical capacity. Nevertheless, their practical application is severely restricted by intrinsically low electrical conductivity and pronounced volume expansion during lithiation and delithiation. Here, we report the construction of a homogeneous Fe/C composite coating on silicon particles via a facile surface deposition approach, enabling the simultaneous modulation of both bulk-phase structural stability and the chemical composition of the solid electrolyte interphase (SEI). Structural characterization reveals that the continuous carbon layer functions as a highly conductive network, establishing efficient electron transport pathways, while also acting as a physical confinement barrier that suppresses detrimental electrode-electrolyte interfacial reactions. Concurrently, uniformly dispersed Fe nanoclusters catalytically regulate SEI formation kinetics, inducing the preferential decomposition of LiPF 6 to generate a compact, inorganic-rich interfacial layer. This tailored SEI enhances lithium-ion conductivity while preserving its electronic insulation, thus achieving concurrent optimization of ionic and electronic transport properties. When paired with a LiNi 0.8 Mn 0.1 Co 0.1 O 2 cathode in a full-cell configuration, the Fe/C-Si anode delivers a discharge capacity of 152.67 mAh g −1 with 86.34% capacity retention after 200 cycles. This Fe/C composite coating strategy provides a robust and effective route for stabilizing both the bulk structure and the interfacial chemistry of high-strain anode materials, offering new insights into the design of next-generation high-performance LIBs.
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International Journal of Minerals Metallurgy and Materials
·
2026
·Vol. 33
·期 2
·716-726
·
IF 8.8
Yu Guoqing,Xie Mingzhuang,Zheng Zhihao,Wu Zegang,Wang Yi,Zhao Hongliang,Liu Fengqin
Waste graphitization cathode carbon blocks are a type of hazardous solid waste generated during the aluminum electrolysis process, and their proper disposal is a key step in the resource utilization of discarded graphite. This study utilizes the porous “defect advantage” of a cathode carbon block matrix to prepare silicon-doped and asphalt-coated detoxified and purified waste graphitization cathode carbon blocks for use as high-performance silicon/carbon composite anode materials. The results show that the uniformly silicon-doped silicon/carbon composite material features a unique amorphous carbon-encapsulated “locked silicon” structure, which effectively addresses issues such as cathode volume expansion, excessive growth of the solid electrolyte interphase (SEI) film, and poor electrical contact between active materials. Consequently, electrochemical performance is enhanced. After assembly in a half-cell, the PSCC/10%Si@C (purified waste graphitization cathode carbon/10%Si@C) material exhibits optimal electrochemical stability, with an initial charging specific capacity of 514.5 mAh/g at 0.1 C (1 C = 170 mA/g) and a capacity retention rate of 95.1% after 100 cycles. At a charge rate of 2.0 C, a specific capacity of 216.9 mAh/g is achieved. This technology provides a new pathway for the economical and high-value utilization of waste cathode carbon blocks and the development of low-cost, high-performance anode materials.
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DALTON TRANSACTIONS
·
2026
·
IF 3.3
Junfeng Shi,Siqi Hou,Weiyan Li,Dafang He,Maolei Huang,Jiawei Xia,Xingyue Qian,Haiqun Chen
Due to its high theoretical specific capacity and abundant natural reserves, silicon (Si) is regarded as one of the most promising candidates for the next generation of lithium-ion batteries (LIBs). However, the poor conductivity and significant volume expansion of Si during the lithiation/delithiation process seriously hinder the commercialization of Si anode for LIBs. Herein, polydiallyl dimethylammonium chloride (PDDA) was introduced to modify the surface charge of Si nanoparticles (NPs) and then encapsulated with a graphene framework, followed by covering them with a carbon layer to form the Si-C composite (Si@PDDA@RGO/C). Specially, the pyrolytic carbon not only mitigates the large volume change of Si but also ensures good contact with graphene, thereby preserving the structural integrity of the electrode during cycling. The flexible lamellar structure of graphene provides ample space for the dispersion of Si NPs, improving the conductivity of the composite while also suppressing the volume change of Si. The results demonstrate that the double-layer carbon-coated Si NPs improves the cycling stability of the anode material with the initial charge-discharge capacity of 783.48/1292.24 mAh g -1 , a coulombic efficiency of 60.63%, and a discharge capacity of approximately 620.13 mAh g -1 after 100 cycles at 0.2 A g -1 , as well as excellent rate performance and electrochemical reaction kinetics.
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INTEGRATED FERROELECTRICS
·
2023
·
IF 0.7
WenHao Li,Shaopeng Wu,Xusheng Liu,Yuanchao Cheng,Xiaolan Cai,Lei Zhou,YanKun Wang,QingLan Huang
Using micron silicon as raw material and multi-layer graphene as carbon source, a sandwich-type silicon-carbon composite material is prepared by high-energy ball milling, in which micro-silicon particles are uniformly embedded between the layers of multi-layer graphene. In the process of lithium deintercalation, the graphene sheet can effectively suppress the volume expansion of silicon, thereby improving the high cycle performance and electronic conductivity of the negative electrode of lithium ion batteries. The results show that the average discharge specific capacities are 3094.8, 2406.1, 1845.2, 1210.1, 657.3mAh/g at current densities of 200, 400, 800, 2000, and 4000mAh/g. Each current density is cycled for 5 cycles. When returning from high current to low current, the capacity can still remain at 1729.4 mAh/g, which is greatly improved compared to 671.4 mAh/g of pure silicon. important meaning. It is of great significance for the application of high-capacity silicon carbon anodes.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jinghong Pan,Chuxiao Sun,Jiajun Liu,Xishan Zhao,Chunxiao Jiao,Chengkai Wang,Qi Wang
Si-based materials are the most potential high-capacity anode material for lithium-ion batteries due to their theoretical specific capacity of 4200 mAh g −1 , significantly higher than the current commercial graphite anode (372 mAh g −1 ). However, the significant volume change (>300%) of Si-based materials during the embedding of lithium ions into Si NPs results in various issues, such as short cycle life and low electrical conductivity , which significantly restricts their commercial development. This study introduces a new flower-like Si@NiO/reduced graphene oxide (rGO) ternary composite synthesized using a straightforward and low-pollution one-step synthesis technique. A distinctive composite flower-like structure is created by wrapping Si NPs in NiO nanoflowers and embedding the rGO nanosheets in the NiO "petal" structure. This structure can shorten the lithium-ion transport path, provide a superb conductive network, effectively reduce the electrode's bulk effect and improve the structural stability of the anode material. Additionally, the structure provides more capacity for the electrodes. At a current density of 1 A g −1 and after 700 cycles, the Si@NiO/rGO anode displays a discharge-specific capacity of 1081.34 mAh g −1 thanks to its one-of-a-kind flower-like structure. At various current densities, the Si@NiO/rGO anode likewise demonstrates outstanding electrochemical performance. Additionally, the volume growth of the flower-like Si@NiO/rGO anode material after 700 cycles is approximately 15.08%, substantially less than that of Si NPs. The new flower-shaped Si@NiO/ rGO ternary composite, synthesized in a simple and cost-effective way, offers not only an alternative for the preparation of Si-based electrode materials that can alleviate their drastic volume expansion but also an effort to create new renewable green energy storage devices.
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SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Yanan Wei,Xiaofei Cao,Jun Hu,Neng Li,Li Sun,Weihua Li,Hongwei Liu
The hydration of wettable materials can help to improve their anti-biofouling effect, but their hydration stability under high salinity conditions is a challenge considering the future applications in natural marine environments. Inspired by the self-cleaning properties of crustaceans, chitosan (CS)/Poly (vinyl alcohol) (PVA) hydrogels have been prepared, and their anti-biofouling and salt tolerant mechanism were deeply investigated using surface analysis and molecular dynamics simulation . Interestingly, it is found that CS/PVA hydrogels can be controllably triggered at a low pH, and they can self-adjust to enhance anti-biofouling performance following the changes of environmental conditions. The hydration of CS/PVA hydrogels is enhanced in seawater because of a low salt sensitivity factor ( f ) of these hydrogels with a value of less than 0. Super hydrophilicity of CS/PVA hydrogels makes water drop achieve super spreading within 66.5 ms. Compared to PVA hydrogels, almost no crude oil, protein and algae can adhere to the surface of the prepared CS/PVA (0.2:1) hydrogel. The field tests in the south sea of China also demonstrate that CS/PVA (0.2:1) hydrogel has an excellent anti-biofouling ability after 6 months of testing. The anti-biofouling mechanism is also discussed according to the experimental results and molecular dynamics simulation.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Zhiliang Li,Zheng Su,Hongxia Zhang,Qing Wang,Jianglong Wang,Xin Qian,Qian Cao,Zhihai Ding,Jing-Feng Li,Shufang Wang
Higher manganese silicide (HMS) is a naturally abundant, environmentally friendly, and mechanically robust P-type thermoelectric (TE) semiconductor. Isoelectronic doping elements Re and Ge are used to partially occupy cation (Mn) and anion (Si) sites, respectively. Compared with the single Re-doped strategy, TE performance is further improved in the isoelectronic double-doped Mn 0.96 Re 0.04 (Si 0.96 Ge 0.04 ) 1.79 composition. The electrical conductivity (∼54.2 × 10 3 S m –1 at 823 K) is double that of pure HMS (∼26.1 × 10 3 S m –1 ), whereas the power factor increases from ∼1.42 × 10 –3 W m –1 K –2 to ∼1.80 × 10 –3 W m –1 K –2 due to the increase in carrier concentration caused by the decreased band gap (from 0.82 eV to 0.74 eV), as well as the embedding of the Si, Ge nanodispersions with low work functions. Furthermore, the substitution of Re and Ge increases the amounts of lattice defects, and the presence of nanoscale Ge precipitates cause the broadband phonon-scattering effect in the HMS matrix. Finally, the lattice thermal conductivity at 673 K decreases from ∼2.18 W m –1 K –1 to ∼1.60 W m –1 K –1 . The zT value at 823 K increases by ∼36% from 0.45 to 0.61. The strategy of cation and anion double doping can effectively improve the TE properties of materials, which has significance for the optimization of other materials.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Aolin Xie,Bei Zhang,Yicheng Ge,Ke Peng,Ping Xu,Xiaodong Wang,Zhirong Feng,Maozhong Yi,Zhe Zhou
To maintain the thermal stability of SiC nanowires during SiC coating fabrication process, carbon and SiC double protective layers were covered on the surface of nanowires. And SiC nanowires with double protective layers toughened SiC coating were prepared by pack cementation. The results showed that after introducing the SiC nanowires with double protective layers, the fracture toughness of the SiC coating was increased by 88.4 %. The coating protected C/C for 175 h with a mass loss of 3.67 %, and after 51 thermal shock cycles, the mass losses of the oxidized coating were 3.96 %. The double protective layers are beneficial to improve the thermal stability of nanowires, leading to good fracture toughness and thermal shock resistance of SiC coating. SiC nanowires consume the energy of crack propagation by fracture, pullout and bridging, leading to an increase in fracture toughness.
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Advanced Optical Materials
·
2023
·Vol. 11
·期 16
·2300736
·
IF 9
Jiazheng Zhou,Linan Wang,Yu Chu,Hongshan Wang,Shilie Pan,Junjie Li
The exploration of antilaser damage wide bandgap infrared (IR) nonlinear optical (NLO) materials is urgent but challenging. Herein, by introducing the idea of fluorination into chalcogenides, a wide bandgap IR NLO material Na 3 SiS 3 F with unprecedented [SiS 3 F] tetrahedra is designed and synthesized. Na 3 SiS 3 F shows a wide bandgap of 4.75 eV (the largest one in the reported quaternary metal chalcogenides), resulting in a high laser damage induced threshold of ≈5 × AgGaS 2 (AGS). Meanwhile, the compound has a moderate NLO response (≈0.3 ×AGS) with phase-matching behavior, large birefringence (0.15@1064 nm), and wide IR transparent region. The introduction of fluorine breaks the structural symmetry and broadens the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap, polarizability anisotropy, and hyperpolarizability of the Si–S tetrahedral unit. The results indicate that Na 3 SiS 3 F is a promising IR NLO material for the high-power laser application and open an avenue for the design of new wide bandgap IR NLO materials based on NLO-active [SiS x F 4− x ] ( x = 1, 2, 3) mixed anionic tetrahedral group.
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