Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 18
·11020-11027
·
IF 10.7
Wenhao Zheng,Xiao Peng,Wenjing Zhai,Lin Huang,Peizhuo Chen,Penghui Shi,Xiaohui Zhou,Jianguo Wan,Zhibo Yan,J.-M. Liu
Tin-based halide perovskites have become the prospective photoelectric materials due to their remarkable optoelectronic properties and relatively low toxicity. However, the rapid crystallization and easy oxidation of Sn2+ to Sn4+ made it challenging to fabricate efficient photoelectric devices. Herein, benzylamine boron trifluoride (BBF) was introduced into the FASnI3 precursor solution to tune the crystal quality and photoelectric properties of FASnI3 films. It was demonstrated that the BBF passivates the film defects, reduces the content of Sn4+, enhances the PL intensity and stability, and improves the responsivity at wavelengths from 415 to 980 nm. The treatment of BBF with an optimal concentration of 1.5 mg mL−1 improves the responsivity of the device from 0.89 to 2.6 A W−1. The coordination of BBF with the anions/cations in the perovskite precursor is suggested to account for the improvement of crystal quality and the photoelectric properties of FASnI3 films.
研究领域:
材料科学
·
光电子学
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高影响因子
Energy Materials
·
2026
·Vol. 6
·期 8
·N
·
IF 11.9
Leyan She\u003Csup\u003E1\u003C\u002Fsup\u003E,Jiaxin Meng\u003Csup\u003E1\u003C\u002Fsup\u003E,Lide Li\u003Csup\u003E1\u003C\u002Fsup\u003E,Litao Liang\u003Csup\u003E1\u003C\u002Fsup\u003E,Routong Chen\u003Csup\u003E1\u003C\u002Fsup\u003E,Shiyi Tan\u003Csup\u003E1\u003C\u002Fsup\u003E,Guozhen Zhang\u003Csup\u003E1\u003C\u002Fsup\u003E,He Liu\u003Csup\u003E1\u003C\u002Fsup\u003E,Cong Guo\u003Csup\u003E1\u003C\u002Fsup\u003E,Weizhai Bao\u003Csup\u003E1\u003C\u002Fsup\u003E,Jingfa Li\u003Csup\u003E1\u003C\u002Fsup\u003E,Qian Liu\u003Csup\u003E2\u003C\u002Fsup\u003E,Feng Yu\u003Csup\u003E1,\u003C\u002Fsup\u003E,Hongxia Wang\u003Csup\u003E2,\u003C\u002Fsup\u003E
Aqueous bromine batteries hold promise for safe and low-cost large-scale energy storage, but their practical energy density is limited by the restricted voltage of conventional single-electrolyte systems. Herein, we develop a pH-asymmetric aqueous Sn-Br battery by decoupling an acidic bromine catholyte from an alkaline Sn anolyte using a bipolar membrane. The acidic catholyte maintains reversible Br-/Br3- conversion, whereas the alkaline anolyte enables low-potential Sn hydroxo-complex redox chemistry. This acid-alkaline configuration converts the pH-dependent redox asymmetry of Sn into an enlarged full-cell voltage window. A surface-regulated Sn anode is further employed to improve interfacial stability and redox reversibility, while the voltage enhancement primarily originates from pH-decoupled Sn-Br redox chemistry. Potential-alignment analysis shows that switching Sn from acidic Sn/Sn2+ redox to alkaline hydroxo-complex redox increases the theoretical Sn-Br potential gap from approximately 1.2 V to above 2.0 V. In situ Ultraviolet-Visible (UV-vis) Absorption spectroscopy confirms reversible bromine-species evolution during charge/discharge, demonstrating the compatibility of bromine redox chemistry with high-voltage operation. The resulting pH-asymmetric Sn-Br full cell achieves a voltage window of up to 2.3 V, delivers a specific capacity of approximately 172.2 mAh g-1 at 3 A g-1, and maintains 98% capacity retention over 6,000 cycles with Coulombic efficiency above 97%. This study highlights pH decoupling as a powerful strategy for designing high-voltage aqueous conversion batteries based on pH-dependent metal redox chemistry.
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Journal of Physical Chemistry C
·
2025
·
IF 3.2
Jian Gong,Aijing Hao,Wenlu Liu,Ensheng Zhan,Wenjie Shen
SnBeta nanocrystals, i.e., SnBeta zeolite with a crystal size of ∼20 nm, high framework Sn content (∼2.2 wt %), and enhanced active site accessibility, were prepared by liquid grafting of SnCl4·5H2O onto dealuminated SiBeta in dimethyl sulfoxide (DMSO) solution. The use of β nanocrystals with high Al content as a precursor provided enhanced mass transportation and abundant silanol nests (after dealumination) for Sn anchoring, while the reaction at 413 K in DMSO solution also facilitated the reaction between SnCl4 and silanols, thus substantially promoting Sn utilization efficiency. Specifically, a high framework Sn content of up to 1.0 wt % was obtained with a Sn utilization efficiency above 60% at a low Sn feeding of 0.14 mmolSn·gzeolite–1. Moreover, all samples with Sn contents ranging from 0.4 to 2.2 wt % showed identical active Sn structure, resulting in similar intrinsic activity toward Baeyer–Villiger oxidation of 2-adamantanone, with turnover frequencies approaching 62–72 mol2-Ad·molSn–1·h–1.
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MATERIALS LETTERS
·
2025
·
IF 2.7
Peigen Zhang,Cheng Zhang,Xinxin Xia,Zhenglin Zou,Wei Zheng,ZhengMing Sun
Tin (Sn) whiskers pose significant reliability risks in electronics, especially with the transition to lead-free solders. Mitigating Sn whisker growth remains a significant challenge. Here, Ti 2 SnC is used as a model to provide atomized Sn, which is the key driver for Sn whisker growth, and graphene is introduced to inhibit Sn whisker growth. Mechanochemical decomposition of Ti 2 SnC via ball milling releases atomized Sn, which is incorporated into a Sn matrix by thermo-compression to assess its effect on whisker formation. Adding graphene to the composite restricts long-range Sn diffusion, significantly reducing whisker length and density. Graphene's two-dimensional structure forms nanoscale diffusion barriers, hindering atomic migration and aggregation. These dispersed graphene nano-walls inhibit whisker growth effectively without damaging the bulk matrix, providing a promising approach to enhance reliability in lead-free solder systems.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Zhao Hengyu,Wang Baoyu,Yang Shiqing,Zhu Huamiao,Zhang Zihao,Li Wenyao,Yang Xiangmin,Fang Bin,Liang Ying,Zhang Zhen
As conductive fillers, the uniformity and compactness of composite metal powders are crucial for preparing high-performance conductive pastes. In this study, a self-circulating electroplating method was proposed, which could efficiently deposit Sn plating on the seed of Cu micro-flakes to prepare composite metal powders. The effects of total electroplating time, single electroplating time, loading mass of Cu seeds on the cathode support, and the bath temperature on Sn plating layer have been systematically investigated and optimized. And the influence mechanisms of electroplating parameters on coating coverage, compactness, and uniformity of Sn plating layer were proposed. The Sn-coated Cu micro-flakes with compact plating layer of 142.9 nm thickness were obtained with the total electroplating time of 60 min, the single electroplating time of 3 min, and the loading mass of Cu seeds of 18 mg/cm 2 at the bath temperature of 15 °C. Finally, the as-prepared Sn-coated Cu micro-flakes were used as fillers to prepare conductive pastes, which exhibited good antioxidation performance at 85℃ and 85%R.H. Graphical abstract
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ADVANCED ENGINEERING MATERIALS
·
2025
·
IF 3.3
Yixiao Zheng,Wen Zhang,Guanghui Chen,Lin Zong,Yilun Yang,Jingtao Xin,Lianqing Zhu
2 μm laser systems offer superior eye safety and wide-ranging applications in remote sensing, biomedical fields, and industrial applications. The increasing demand for high-power 2 μm lasers faces challenges from thermal instability at fiber splice points during high-power operation. To address this, a novel Tm–Sn codoped fiber combining photosensitivity and gain properties through modified chemical vapor deposition and liquid-phase doping is developed. The fabricated fiber features a core/cladding diameter of 9.03/125.50 μm with 0.54 μm concentricity, demonstrating a refractive index fluctuation of 2.591 × 10 − 3 and Tm 2 O 3 concentration of 2.70 wt%. Characterization by Raman and fluorescence spectroscopy confirms successful Tm–Sn codoping. The fiber shows exceptional compatibility with standard single-mode fibers (0.04 dB splice loss) and enhanced photosensitivity, achieving a refractive index change of 6.75 × 10 − 5 under 248 nm UV exposure—surpassing Ge-doped fibers by 3 × 10 − 5 . This innovative design enables integrated gain medium-resonator structures without fusion splices, providing a robust solution for high-power 2 μm laser development. The fiber's unique combination of optical properties addresses critical thermal stability issues while maintaining performance efficiency.
研究领域:
光学工程
·
光纤通信
·
激光技术
·
生物医学光子学
·
材料科学
·
集成光子学
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高影响因子
Crystals
·
2024
·Vol. 14
·期 9
·802
·
IF 2.4
Tengteng Li,Fupeng Ma,Yafeng Hao,Huijia Wu,Pu Zhu,Ziwei Li,Fengchao Li,Jiangang Yu,Meihong Liu,Cheng Lei,Ting Liang
Sn-Pb perovskite solar cells, which have the advantages of low toxicity and a simple preparation process, have witnessed rapid development in recent years, with the power conversion efficiency for single-junction solar cells exceeding 23%. Nevertheless, the problems of poor crystalline quality of Sn-Pb perovskite films arising from rapid crystallization rate and facile oxidation of Sn2+to Sn4+have become key issues for the further development of Sn-Pb perovskite solar cells. Herein, we report the incorporation of triazinamide (N-(6-methyl-3-oxo-2,5-dihydro-1,2,4-Triazin-4(3H)-YL) acetamide) as an additive to regulate the crystalline growth of Sn-Pb perovskite films, resulting in films with low trap density and large grain size. The triazinamide additive effectively passivated defects in the perovskite films. As a result, the triazinamide-modified perovskite solar cells achieved a higher efficiency of 15.73%, compared with 13.32% for the control device, significantly improving device performance. Notably, the optimal triazinamide-modified perovskite solar cell maintained 72% of its initial power conversion efficiency after being stored in an air environment for nearly 300 h, while only 18% of the power conversion efficiency of the control perovskite solar cell was retained. This study proposes an effective strategy for fabricating highly efficient and stable Sn-Pb perovskite solar cells.
研究领域:
材料科学
·
能源科学
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高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Chunxiao Li,Yuying Feng,Jiahui Jiang,Jingjing Zhu,Heju Gao,Ting Zhao,Guancheng Xu,Li Zhang
Nickel-based sulfides have been proven to be excellent oxygen evolution reaction (OER) electrocatalysts due to their excellent electrical conductivity, but their poor stability hinders their application in practical applications. To address this issue, defect engineering has been proposed as a viable strategy to enhance the electronic structure of the catalyst and further boost the OER performance. Herein, a MOF-derived Sn-doped NiS/Ni3S2 nanostructure grown in situ on nickel foam (Sn–NixSy/NF) has been designed as an active OER electrocatalyst. The morphology of the material was significantly impacted by the addition of the Sn elements, nanorods modified with nanoparticles providing more active sites. Moreover, the introduction of Sn elements induced the generation of sulfur vacancies (Vs), enhanced electron transfer, promoted electron redistribution, and increased the charge transfer rate. All of these endow the Sn–NixSy/NF-T with exceptionally low overpotentials of 104 and 286 mV to achieve a current density of 10 and 100 mA cm–2 for OER. Moreover, the Sn–NixSy/NF-T showed long-term stability, maintaining 100 h at current densities of 100 mA cm–2. In short, this work opened a route for engineering defects to boost the OER.
研究领域:
材料科学
·
电化学
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高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2020
·Vol. 35
·期 2
·272-279
·
IF 0.64
Li Zhi,Shen Wenjian,Zhao Juan,Ying Hangkai,Wu Zhengli,Liu Yifan,Li Wangnan,Ku Zhiliang,Peng Yong,Huang Fuzhi,Cheng Yibing,Zhong Jie,Fu Zhengyi
A novel aqueous Sn-S complex solution was applied as precursor to fabricate SnO 2 electron selective layers (ESLs) for the hybrid perovskite solar cells (PSCs). The tin and sulfur powder were directly dissolved in a (NH 4 ) 2 S water solution to form Sn-S precursor. After depositon and annealing, the SnO 2 film was formed, presenting as a low cost and enviromental friendly method for preparation of ESL. The films showed excellent transmittance at visible wavelength range. Moreover, the method exhibited high compatibility for doping using Cu, Cd, Li, and Zn elements. Zn doping (0.05 M) in the as-prepared SnO 2 ESL significantly improved perovskite solar cells (PSCs) performance. The highest PCE of 13.17% was achived with 15% enhancement compared to that of undoped SnO 2 ESL samples. TiCl 4 modifications on SnO 2 film improved photovoltaic performance to 14.45%, but resulted in the poor long-term stability, around 80% more degredation than that of PSCs based on Zn-doped SnO 2 films.
研究领域:
材料科学
·
能源技术
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 15
·13180-13187
·
IF 2.324
Wang Yan,Wang Yishu,Ma Limin,Han Jing,Guo Fu
Due to the asymmetric structure of Sn unit cell, the electromigration behaviors of Sn based solder joints were significantly depended on the crystal orientation of Sn grain. The present investigation illustrated the effect of Sn grain c -axis on the intermetallic compounds (IMCs) growth under current stressing. The Cu particles reinforced Sn3.5Ag solder joint was selected to obtain various observed surfaces of the sample after 46 days current stressing. The front side, back side, right side and anode side of the sample represented different phenomena, which reflected and proved the importance of c -axis orientation on Cu atomic migration in three-dimension space. Besides, another composite solder joint was polished severe times on the observed surface which was full of IMCs. It showed that the IMCs were covered on the Sn-based solder, and there was crack at the cathode underneath the front surface after 38 days current stressing. The IMC growth behavior would be well understood by systematic study in this work.
研究领域:
材料科学
·
电子工程
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Sachin Mane,Yu-Xia Li,Xiao-Qin Liu,Lin-Bing Sun
The use of porous carbons for selective CO2 separation attracts increasing attention. Owing to low thermostability of porous polymers, low yield is the major concern of porous carbons. To obtain porous carbons with high yield, the development of thermostable porous polymers is highly expected. Herein, high yielded (70% for 700 °C and 64% for 800 °C) Sn-doped porous carbons (SnPCs) have been constructed through KOH-assisted carbonization of Sn-containing polymer. Notably, SnPC-700 (218.5 mg·g–1) demonstrates higher CO2 adsorption capacity than the reference sample prepared without KOH, SnPC-700r (188.3 mg·g–1), indicating the importance of KOH-assisted activation. Carbonization temperature has an effect on the adsorption capacity of resultant materials, and high carbonization temperature leads to better adsorption capacity on CO2. SnPC-800 is able to capture 242.8 mg·g–1 of CO2, which is better than some benchmarks including BILP-7 (193.0 mg·g–1), PAF-1–450 (196.4 mg·g–1), and FCTF-1 (205.5 mg·g–1). More importantly, SnPC-800 demonstrates good selectivity of CO2 over CH4 (31.1). Thus, high yield and good performance upon CO2 adsorption capacity and selectivity over CH4 make SnPCs attractive candidates for the removal of CO2 from natural gas.
研究领域:
材料科学
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环境工程
·
化学工程
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2014
·Vol. 132
·期 13
·
IF 1.64
Shiquan Lai,Yan Gao,Li Yue
An attapulgite-supported Sn catalyst (Sn-palgorskite) was successfully prepared by ion-exchange co-impregnation method. The catalytic effect of Sn-attapulgite on the melt polycondensation reaction of poly(butylene succinate) (PBS) was examined by comparing with that of anhydrous SnCl 2 and a blank experiment. The structures and properties of the PBS products synthesized with the three catalytic systems were characterized by means of Fourier transform-infrared spectra (FT-IR), viscosity measurements, wide angle X-ray diffraction (WARD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). Meanwhile, the acidolysis degradation behaviors of the PBS samples were also studied. It was found that the intrinsic viscosities and the number-average molecular weights of the PBS were remarkably increased under the catalysis of Sn-attapulgite, further leading to an increase in the decomposition temperature, the crystallization temperature, and the viscous flow activation energy, while a decrease in the melting temperature, the relative degree of crystallinity, and the rate of degradation. Additionally, no significant differences were observed in the crystal structures of all the samples, regardless of the reaction system with or without catalyst. The experiment results confirmed that Sn-attapulgite was an effective heterogeneous catalyst for the synthesis of PBS, and the recycled Sn-attapulgite still exhibited higher activity than anhydrous SnCl 2 under identical reaction conditions. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41729.
研究领域:
材料科学
·
催化化学
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高影响因子
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