International Journal of Minerals Metallurgy and Materials
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2021
·Vol. 28
·期 10
·1647-1655
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IF 2.232
Duan Meng-ting,Wu Meng-rong,Xue Kai,Bian Zheng-xu,Shi Jing,Guo Xing-mei,Cao Fu,Zhang Jun-hao,Kong Qing-hong,Zhang Feng
To improve the sulfur loading capacity of lithium-sulfur batteries (Li-S batteries) cathode and avoid the inevitable “shuttle effect”, hollow N doped carbon coated CoO/SnO 2 (CoO/SnO 2 @NC) composite has been designed and prepared by a hydrothermal-calcination method. The specific surface area of CoO/SnO 2 @NC composite is 85.464 m 2 ·g −1 , and the pore volume is 0.1189 cm 3 ·g −1 . The hollow core-shell structure as a carrier has a sulfur loading amount of 66.10%. The initial specific capacity of the assembled Li-S batteries is 395.7 mAh·g −1 at 0.2 C, which maintains 302.7 mAh·g −1 after 400 cycles. When the rate increases to 2.5 C, the specific capacity still has 221.2 mAh·g −1 . The excellent lithium storage performance is attributed to the core-shell structure with high specific surface area and porosity. This structure effectively increases the sulfur loading, enhances the chemical adsorption of lithium polysulfides, and reduces direct contact between CoO/SnO 2 and the electrolyte.
研究领域:
材料科学
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能源存储
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电化学
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CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Minhui Zheng,Yang Liu,Qiang Ru,Jun Zhang,Zikang Pan,Yuqing Gao,Francis Chi-Chung Ling,Li Wei
The mesh-like hard carbon loaded SbPO 4 (SbPO 4 /NTC) was harvested and employed as anode material for sodium ion batteries. Profiting from prominent capacitance, porous structure, and sufficient buffering space, the composite realizes high electrochemical kinetics for sodium ion storage. The SbPO 4 /NTC composite gains impressive battery properties, such as high discharge capacity of 413.7 mAh g −1 under 0.5 A g −1 after 200 cycles and conspicuous rate performance of 365.7 mAh g −1 even at 6 A g −1 . In addition, the composite demonstrates a wide operation-temperature window with favorable capacities of 194.3–397.6 mAh g −1 from −10 °C to 60 °C at 0.1 A g −1 . The phase transition and sodium storage mechanism are elucidated by density functional theory (DFT) calculation. Therefore, the SbPO 4 /NTC composite has a great potential for high-efficient sodium ion storage.
研究领域:
材料科学
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电化学
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IONICS
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2026
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IF 3.4
Shang Dong,Ju Xiaocheng,Jia Feiyang,Pan Yuede,Muhammad Naik,Zhang Guoli,Yang Zhewei,Li Gang,Wang Congwei
This work reports the preparation of N/S co-doped titanium dioxide (N/S-TiO 2 ) via in-situ sulfur doping assisted by alkaline hydrolysis followed by subsequent nitrogen doping and the lithium storage application. TiCl 4 is used as the titanium source, and sodium sulfide (Na 2 S) solution provides the alkaline hydrolysis environment and sulfur source, thus enabling the synthesis of S doped anatase TiO 2 (S-TiO 2 ). Urea is applied as the nitrogen source under high-temperature annealing, resulting in N/S co-doped anatase TiO 2 (N/S-TiO 2 ) materials. In addition, oxygen vacancies, which might enhance the electronic/ionic conductivity, is created. Consequently, N/S-TiO 2 (10:1) exhibits excellent rate performance (85.6 mAh g − 1 at 20 C) and long-term cycling stability (116.22 mAh g − 1 after 1500 cycles at 3 C). Further analysis using cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS) shows an enhanced pseudocapacitive contribution, increased lithium-ion diffusion coefficient, and reduced charge transfer resistance. These findings provide new insights for developing high-performance, structurally tunable metal oxide anode materials.
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JOURNAL OF MATERIALS RESEARCH
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2026
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IF 2.9
Zuo Guangling,Ye Hongyong,Du Jia,Ding Xin
An S-scheme Ag/CdS/Fe 2 O 3 (Ag/CS/FO) heterojunction was fabricated via a sequential solvothermal and photodeposition method. The microstructure and optoelectronic properties of the synthesized ternary composite were verified by a series of characterization methods. The transfer of photogenerated electron–hole pairs (e − /h + pairs) follows an S-scheme pathway, driven synergistically by the interfacial electric field (IEF) and band bending. That directs electrons (e − ) to the conduction band (CB) of CdS (CS) and holes (h + ) to the valence band (VB) of Fe 2 O 3 (FO), achieving efficient e − /h + pairs separation while maintaining high redox capabilities. Additionally, the incorporated Ag nanoparticles enhance visible-light harvesting via the surface plasmon resonance (SPR) effect and function as electron-transfer bridges, collectively promoting charge migration. Consequently, the composite exhibits high photocatalytic activity, degrading 98.68% of amoxicillin (AMX) under visible light. It also maintains 91.6% efficiency after four cycles, confirming sound stability. Notably, the material demonstrates superior performance in real-life water matrices (tap and river water), highlighting its strong application potential. Graphical abstract
The alternative text for this image may have been generated using AI.
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ACS Applied Materials & Interfaces
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2026
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IF 8.2
Yuzhu Li,Tian Liang,Yuanfei Gao,Dan Zhang,Xueke Zhang,Jiahao Zhang,Bingke Li
The development of advanced carbon anodes is pivotal for enabling high-performance sodium-ion batteries (SIBs). However, their reaction dynamics and cycling stability remain a formidable challenge. In this work, we report a novel three-dimensional (3D) carbon framework anode (S-CNS@CNF), featuring engineered carbon nanosheet arrays coupled with a sulfur and nitrogen codoping strategy. Specifically, nickel hydroxide is employed as a structural inducer to facilitate the vertical anchoring of carbon nanosheet arrays onto porous carbon nanofibers, thereby constructing an interconnected 3D porous architecture. This hierarchical structure affords a wealth of active sites for Na+ adsorption while simultaneously facilitating highly efficient pathways for electron transport. Furthermore, N, S codoping introduces a high density of defect sites and enlarges the interlayer spacing of the carbon nanosheets. Experimental findings combined with theoretical calculations reveal that the incorporation of sulfur into the carbon further enhances the Na+ storage kinetics and increases Na+ adsorption energy. Benefiting from the synergistic effects between interconnected 3D porous architectures and N, S doping, the as-prepared anode delivers a high reversible capacity of 399.5 mAh g–1 at 0.1 A g–1 and outstanding rate capability, retaining 146.7 mAh g–1 at 20 A g–1. When Na3V2(PO4)3 (NVP) is employed as the cathode, the NVP//S-CNS@CNF full cell outputs a specific capacity of 117.6 mAh g–1 at 2 A g–1.
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ORGANIC PROCESS RESEARCH & DEVELOPMENT
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2026
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IF 3.5
Jinnai Liu,Jiawei Tang,Hao Chen,Li Zhang,Ganlan Li,Fuli Zhang,Shaoxin Chen,Jun Yu
(S)-3-Bromo-2-(1-methoxyethyl)pyridine 1 is a key intermediate of RMC-6236. In this report, we detail the development and optimization of a highly enantioselective chemoenzymatic and kilogram-scale process for 1. The developed process for intermediate (S)-1-(3-Bromopyridin-2-yl)ethanol 3 was performed on 1 kg scale with a substrate concentration of 70.0 g/L, achieving a yield of 93.0% and an ee value of >99.9%. Subsequently, a simple and effective NaHMDS/CH3I methylation system afforded the title compound 1, in 95.0% yield and with >99.9% ee, achieving 88.4% overall yield from intermediate 1-(3-bromopyridin-2-yl)ethanone 2. This represents a notable increase compared to the early stage process (overall yield 55.5%). This optimized highly efficient and sustainable process was demonstrated during kilogram-scale production of 1.
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Polymer Chemistry
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2026
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IF 3.9
Mengchao Zhang,Sifan Li,Zhaohui Zhang,Hongkun Li
The direct conversion of carbon dioxide (CO2) into value-added polymeric materials has garnered considerable research interest in recent decades. Multicomponent tandem polymerization (MCTP), as an emerging synthetic strategy, demonstrates exceptional efficiency in constructing functional polymers. Nevertheless, CO2-involved MCTP systems have been rarely reported. Herein, we developed a one-pot MCTP involving CO2, alkynes, alkyl bromide, and thiol, enabling the efficient transformation of CO2 into structurally well-defined regioregular polymers. The polymerization process mediated by Ag2WO4 and Cs2CO3 under ambient pressure in N,N-dimethylacetamide upon heating produced four soluble poly(β-thioacrylate)s with high weight-average molecular weights (up to 11 500 g mol−1) and Z-stereoregularities (up to 84%). Notably, the tetraphenylethene-containing polymer exhibited aggregation-induced emission features, demonstrating its potential as a dopant in liquid crystalline polymer networks. The resulting film displayed circularly polarized luminescence properties with an exceptional luminescence dissymmetry factor of −0.88. Intriguingly, the polymer/polyamide 6 (PA6) composites manifested room-temperature phosphorescence featuring long emission lifetimes up to 510 ms. Furthermore, the polymers could be post-modified by the thiol–ene click reaction to produce sulfur-rich polymers. This work provides a robust platform for converting CO2 into stereoregular polymeric materials with tailorable photophysical properties, offering promising applications in advanced optoelectronic materials and sustainable technologies.
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Science Advances
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2026
·Vol. 12
·期 13
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IF 13.9
Yuxiang Zhan,Kunpeng Zhao,Hexige Wuliji,Yifan Yuan,Xiang Liu,Tian-Ran Wei,Ting Zhang,Min Zhu,Xun Shi
(Ag,Cu) 2 (S,Se,Te) alloys, as rare examples of p-type inorganic ductile semiconductors, have emerged as promising candidates for wearable electronics because of their mechanical flexibility and favorable processability. However, the multicomponent nature of this system introduces diverse microstructures and intricate defect landscapes that complicate the optimization of thermoelectric performance. Here, we reveal the presence of compositionally inhomogeneous yet structurally coherent nanoscale chemical fluctuations within this alloy system. These fluctuations, together with abundant dislocations and twin boundaries, serve as efficient phonon scattering centers to suppress the lattice thermal conductivity to approach glass-like levels. Concurrently, tuning the cation ratios and vacancies allows for precise control over the carrier concentration and thereby leads to enhanced power factors. Last, a peak zT of 0.98 at 360 kelvins is achieved, marking a record for Ag-based ductile thermoelectrics. This study highlights the essential role of chemical fluctuations in modulating phonon and charge transports and offers valuable insight into the microstructure-defect–property interplay in ductile materials.
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MOLECULES
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2026
·Vol. 31
·期 7
·1172
·
IF 5.1
Bing Chen,Yiwen Li,Chaojiang Fan,Qingpei Zhou,Wenhu Li,Hang Su,Cong Li,Shixiong Zhang,Chenhui Yang,Teng Wang
Lithium–sulfur (Li-S) battery technology has attracted significant research interest owing to sulfur’s remarkable theoretical capacity and exceptional energy density potential. Nevertheless, the low conductivity of sulfur and the “shuttle effect” pose challenges to its practical applications. To enhance electrochemical performance, this work developed nitrogen-doped graphene (NG) nanosheets as a separator coating for Li-S battery. As a modification layer for separators, NG acts as a physical barrier that prevents polysulfides from migrating across the separator to reach the anode, thereby mitigating the shuttle effect. Additionally, NG improves the conductivity of the separator and enhances wettability between the separator and electrolyte, facilitating uniform transmission of lithium ions. Notably, NG functionalized separators demonstrate excellent mechanical flexibility, contributing to improved cycle stability for batteries. Furthermore, theoretical calculations indicate a strong interaction between NG and lithium polysulfides (LiPSs), effectively inhibiting polysulfide migration. The Li-S battery utilizing the NG modified separator maintains a capacity retention rate of 51.5% after 100 cycles at 0.1 C with a sulfur loading of 1.47 mg/cm2and exhibits a capacity decay rate of only 0.092% after 500 cycles at a discharge rate of 1 C. This work highlights the potential advantages of employing NG as a separator coating layer in enhancing the electrochemical performance of the Li-S battery.
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Functional Materials Letters
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2026
·
IF 1
Yang Sheng,Xinyu Zhu,Xingyu Liu,Peng Zhang,Yixin Sun,Rong Zhang
Developing novel materials to improve the global food supply is vital to combat hunger, achieve food security and promote sustainable agriculture. To address this issue, we employed red-emitting Ag-In-S-Zn (AISZ) quaternary quantum dots (QDs) as light converters to fabricate AISZ QDs-loaded ethylene vinyl acetate (EVA) copolymers (AISZ/EVA) films to improve the light conditions for crop growth. The synthesis of AISZ QDs was optimized to achieve a high quantum yield (73%) and an emission band matching the absorption window of chlorophyll a and b. Using EVA resin as the matrix, efficient ultraviolet-to-red light-converting AISZ/EVA films with varying AISZ content were prepared by the solvent evaporation method. The fluorescence and transmittance of these light-conversion films along with a blank EVA control, were characterized. Subsequent 28-day lettuce cultivation under controlled light illumination revealed that the 1.0 wt.% AISZ/EVA film induced maximal growth enhancement. The fresh weight and dry weight were increased by 28.2% and 34.4%, respectively, while the contents of total chlorophyll, chlorophyll a, chlorophyll b, carotenoid, soluble sugars and proteins were increased by 48.8%, 51.3%, 43.8%, 40.8%, 33.6% and 37.2%, respectively. The results demonstrate that broad-emitting AISZ QDs served as efficient light converters to fabricate agricultural light-conversion films, highlighting their broad application prospects and promising commercial potential in controlled environment agriculture.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Yuan-Yuan Feng,Hua-Shuai Hu,Jin Liu,Zi-Heng Liu,Dan Zhang,Dong-Xing Tan
● S,Fe-NiFeO x H y /NF shows an ultra-low OER overpotential of 305 mV at 1000 mA cm −2 . ● The catalyst exhibits a promising stability for over 40 h without activity decay. ● The total preparation process of S,Fe-NiFeO x H y /NF electrocatalyst only takes 6 min. ● The high performance stems from electronic interactions among S, Fe and NiFeO x H y . Water electrolysis is considered an ideal route for producing high-purity hydrogen, yet its widespread application remains severely constrained by the anodic sluggish oxygen evolution reaction (OER). Herein, we present a high-performance S,Fe-NiFeO x H y /NF electrocatalyst for OER that markedly reduces the overpotential of OER to 196 mV at the benchmark current density of 10 mA cm −2 . Even at high current densities of 500 and 1000 mA cm −2 , the overpotentials are only 291 and 305 mV, respectively, outperforming most previously reported Ni/Fe-based catalysts. The catalyst also exhibits promising long-term stability, maintaining a high current density of 500 mA cm −2 for over 40 h without activity decay. Notably, the entire catalyst preparation takes just 6 min, and this cost-effective and facile synthetic strategy is key to enabling practical water electrolysis. Our findings open up a new avenue for developing non-noble metal catalysts with both high activity and durability for water electrolysis. Download: Download high-res image (267KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Ruyue Zheng,Shaohong Guo,Jingyi Wang,Jinhua Yang,Jingchun Jia,Ying Chang,Meilin Jia,Jiang Wang
A sulfide–sulfide ZnIn 2 S 4 /ZnS heterojunction establishes an S-scheme charge-transfer pathway with intimate interfacial coupling. • Ce act as additional regulation centers to modulate interfacial electronic structure and carrier dynamics. • The S-scheme charge-transfer mechanism is supported by XPS, KPFM, DFT calculations, and ultrafast spectroscopy. • Ce-mediated electronic regulation synergistically enhances CO 2 adsorption, activation, and surface reduction kinetics. • The optimized C2ZZ2 catalyst achieves 140.6 μmol g −1 h −1 CO production through coordinated interface and electronic regulation. Solar-powered photocatalytic CO 2 reduction represents a promising strategy for achieving carbon neutrality through sustainable solar-to-chemical energy conversion. Nevertheless, inefficient charge separation and sluggish interfacial reaction kinetics markedly limit its performance. Herein, Ce-regulated ZnIn 2 S 4 /ZnS S-scheme heterojunctions were synthesized via a facile one-step in situ hydrothermal strategy to regulate interfacial charge transfer and surface reaction processes. The ZnIn 2 S 4 /ZnS interface establishes an S-scheme charge-migration pathway, facilitating directional migration and utilization of photogenerated carriers, while Ce incorporation induces electronic redistribution and modulates the local electronic environment. Experimental investigations combined with theoretical calculations reveal that Ce-mediated electronic modulation cooperates with the S-scheme heterointerface to strengthen CO 2 adsorption, accelerate interfacial charge transfer, and reduce the energy barrier of CO 2 reduction. Benefiting from this synergistic electronic regulation, the optimized C2ZZ2 catalyst achieves a CO evolution rate of 140.6 μmol g −1 h −1 , approximately 4.5-fold higher than pristine ZnIn 2 S 4 . This work provides mechanistic insights into rare-earth-mediated electronic regulation in metal sulfide photocatalysts, offering a deeper understanding of the relationship among electronic modulation, interfacial charge-transfer dynamics, and CO 2 reduction kinetics. An S-scheme heterojunction, in which ZnS nanospheres are anchored to a defect-containing cerium-doped ZnIn 2 S 4 micro-flowers structure (CxZZy composite), was synthesized via a one-step in situ solvothermal method. This material exhibits outstanding CO 2 catalytic performance under visible light irradiation. Download: Download high-res image (118KB) Download: Download full-size image
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