IONICS
·
2023
·Vol. 29
·期 12
·5073-5084
·
IF 2.8
Zhang Xiangyang,Xin Yu,Shen Qianyun,Wang Feifei,Xiao Wei
A facile and feasible strategy is carried out combined with the subsequent heat treatments to encapsulate SnO 2 /Cu 3 Sn nanoparticles into N-doped carbon nanofibers (CNFs) by electrospinning to fabricate the SnO 2 /Cu 3 Sn@CNFs nanofibers as anode materials for lithium-ion batteries. The one-dimensional composite nanofibers are well interconnected with each other and randomly intertwined to construct the distinctive three-dimensional networks, which not only shorten Li + transfer pathways and accelerate Li + diffusions in the axial direction, but also improve the electronic conductivity of whole composite electrodes. Furthermore, the fully active SnO 2 phases dominate the lithium storage behaviors of composite electrodes to guarantee the excellent lithium storage capacity, and the relatively active Cu 3 Sn phases play the role of buffer matrixes to accommodate the huge volume expansion of SnO 2 phases. When the dosages of SnCl 2 salts are controlled at 5 mmol, the SnO 2 /Cu 3 Sn@CNFs-5 electrode delivers the excellent comprehensive electrochemical properties, whose initial discharge specific capacity is 1279.1 mAh/g at 100 mA/g and maintains to 560.7 mAh/g after 200 cycles. Moreover, the SnO 2 /Cu 3 Sn@CNFs-5 electrode is endowed with the high-specific capacity of 359.2 mAh/g at 500 mA/g after 1000 cycles and the satisfactory pseudocapacitive contribution of 49.60% at 1.0 mV/s. The new insights into the electrospinning strategy of encapsulating SnO 2 and Cu 3 Sn nanoparticles into CNFs matrixes can contribute to offer a guide for the application of next-generation SnO 2 -based anodes for energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mingchen Xu,Xinfa Zhu,Gaoning Fan,Xiyu Jia,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Pengyu Zhou,Chao Fan
Visible photodetectors based on two-dimensional tin disulfide (SnS2) have attracted interest for applications in optical communication, information capture, and military reconnaissance owing to their high absorption efficiency, atomic-scale thickness, and nontoxicity. However, their intrinsic bandgap limits their spectral detection range, hindering further practical applications. Herein, we introduce VIII B-nickel (Ni) with a similar ionic radius to Sn to form Ni-doped SnS2 few-layers via micromechanical exfoliation. As the Ni-doping concentration increases, the bandgap decreases from 2.14 (SnS2) to 1.95 eV (Sn0.9Ni0.1S2). Subsequently, Ni-doped SnS2-based photodetectors are fabricated and characterized. These devices exhibit an extended spectral detection range and excellent performance, with a maximum responsivity of 2009 A W–1 and high normalized detectivity of 2.47 × 1012 cm Hz1/2 W–1. Furthermore, to suppress dark current and noise, SnS2/Ni-doped SnS2 homostructures and their corresponding photodetectors are fabricated. The built-in electrical field of the homostructure effectively reduces the dark current of the homostructure photodetector to 110 nA. Consequently, the responsivity is enhanced to 3350 A W–1 and the response time is reduced to 3.5 ms, outperforming most other 2D material–based and commercial photodetectors. And Ni-SnS2 VPDs show an application potential in imaging and visible-light communication systems. Thus, this study presents an effective approach to extend the detection spectrum of SnS2-based photodetectors and pave the way for their future applications.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2018
·Vol. 5
·期 4
·932-938
·
IF 5.106
Haocheng Yuan,Yuqiang Jin,Jinle Lan,Yuan Liu,Yunhua Yu,Xiaoping Yang
The poor reversibility of the first conversion reaction (SnO2 + 4Li+ + 4e− → Sn + 2Li2O) and the inferior electrical conductivity of the resulting Li2O make tin oxides not make full use of their lithium storage performance. In this study, various amounts of SnSe nanorods were in situ incorporated into SnOx@CNFs via electrospinning and thermal treatment processes. Binder-free SnSe/SnOx@CNFs exhibit a greatly enhanced lithium-ion storage performance due to their higher electrical conductivity, faster Li-ion diffusivity, and better reversible ability. The optimal SnSe/SnOx@CNFs exhibited a higher initial coulombic efficiency (86.5%) and better reversible capacity (740.7 mA h g−1 at 200 mA g−1 after 70 cycles) than pristine SnOx@CNFs (68.1%, 552 mA h g−1 at 200 mA g−1 after 70 cycles). Moreover, the high capacity of the SnSe/SnOx@CNF electrode can be maintained as high as 345 mA h g−1 at 1 A g−1 over 1000 cycles, demonstrating its robust long-term stability. This work provides new insights for designing high-performance tin-based anode materials for lithium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Jiaxiong Xu,Xiao Tian,Lei Qiu
Fluorine doped tin oxide (FTO) has low lattice mismatch with Cu 2 ZnSnS 4 (CZTS) thin film and has been considered as a suitable substrate material for CZTS. The interface properties between CZTS and FTO play an important role in the photovoltaic performance of CZTS thin film solar cells. However, studies on the properties of the CZTS/FTO interface are scarce. In this work, the phase structures, compositions, morphologies, and electrical contact properties of the CZTS/FTO interfaces were investigated. CZTS thin films with annealing temperature from 500 °C to 580 °C were deposited on FTO-coated glass substrate by sol-gel, spin-coating, and annealing processes. The CZTS/FTO interfaces were characterized by X-ray diffraction, Raman spectroscopy , energy-dispersive spectroscopy, secondary ion mass spectroscopy , scanning electron microscopy, resistivity, and current–voltage ( I – V ) characteristic curve measurement. The results show the successful formation of CZTS/FTO interfaces. No interfacial layer was found at all the CZTS/FTO interfaces, indicating the stability of the CZTS/FTO interface during high temperature treatment. The I – V curves of all the CZTS/FTO structures were near linear, revealing the formation of ohmic contact between CZTS and FTO. The experimental results in this work indicate the feasibility of FTO as a substrate and back electrode for CZTS thin films.
研究领域:
材料科学
·
光伏技术
·
薄膜太阳能电池
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 32
·2301125
·
IF 29.4
Lishuai Huang,Hongsen Cui,Wenjun Zhang,Dexin Pu,Guojun Zeng,Yongjie Liu,Shun Zhou,Chen Wang,Jin Zhou,Cheng Wang,Hongling Guan,Weicheng Shen,Guang Li,Ti Wang,Wenwen Zheng,Guojia Fang,Weijun Ke
Narrow-bandgap (NBG) mixed tin/lead-based (Sn-Pb) perovskite solar cells (PSCs) have attracted extensive attention for use in tandem solar cells. However, they are still plagued by serious carrier recombination due to inferior film properties resulting from the alloying of Sn with Pb elements, which leads to p-type self-doping behaviors. This work reports an effective tin oxide (SnO x ) doping strategy to produce high-quality Sn-Pb perovskite films for utilization in efficient single-junction and tandem PSCs. SnO x can be naturally oxidized from tin diiodide raw powders and successfully incorporated into Sn-Pb perovskite films. Consequently, Sn-Pb perovskite films doped with SnO x exhibit dramatically improved morphology, crystallization, absorption, and more interestingly, upward-shifted Fermi levels. The resulting narrow-bandgap Sn-Pb PSCs with natural SnO x doping have considerably reduced carrier recombination, therefore delivering a maximum power conversion efficiency (PCE) of 22.16% for single-junction cells and a remarkable PCE of 26.01% (with a steady-state efficiency of 25.33%) for two-terminal all-perovskite tandem cells. This work introduces a facile doping strategy for the manufacture of efficient single-junction narrow-bandgap PSCs and their tandem solar cells.
研究领域:
材料科学
·
光伏技术
·
能源研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Yu He,Chenxi Zhao,Zecheng Lu,Ning Guo,Hongmei Luan,Yanchun Yang,Ruijian Liu,Chengjun Zhu
Indium tin oxide (ITO) and intrinsic ZnO (i-ZnO) are usually used as the window layer of Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells within a typical structure. The optoelectronic properties of the window layer play a crucial role in determining the efficiency of solar cells. In this work, two types of CZTSSe solar cells with and without i-ZnO layers were fabricated using dimethyl sulfoxide (DMSO) and dimethylformamide (DMF) as solvents, respectively. The impact of the window layer on the performance of CZTSSe solar cells was investigated. The results suggest that the device without i-ZnO still exhibits a high power conversion efficiency (PCE) compared to conventional bilayer i-ZnO/ITO structures. By removing i-ZnO and optimizing the thickness of ITO, the highest power conversion efficiency (PCE) of DMSO and DMF-based CZTSSe solar cells has been up to 10.17% and 10.27%, respectively, with an increase in open-circuit voltage (V OC ) of 15 mV (in DMSO system) and 10 mV (in DMF system), as well as an enhancement in fill factor (FF) by ∼5 percentage points. These performance improvements are mainly attributed to the reduction of series resistance (R s ) of the window layer due to the removal of i-ZnO layer. Further analysis shows that the generation and collection of photon-generated carriers in CZTSSe solar cells can be affected by the optimized window layer due to optical interference effects and its resistance. Our research may provide insights for the preparation of high efficient CZTSSe solar cells with new structures of the i-ZnO free window layer.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2017
·Vol. 10
·期 11
·3929-3940
·
IF 7.354
Fang Hao,Chen Yuting,Wen Ming,Wu Qingsheng,Zhu Quanjing
A desirable methanol oxidation electrocatalyst was fabricated by metal atom diffusion to form an alloy of an assembled three-dimensional (3D) radial nanostructure of SnNi nanoneedles loaded with SnNiPt nanoparticles (NPs). Herein, metal atom diffusion occurred between the SnNi support and loaded Pt NPs to form a SnNiPt ternary alloy on the catalyst surface. The as-obtained catalyst combines the excellent catalytic performance of the alloy and advantages of the 3D nanostructure; the SnNiPt NPs, which fused on the surface of the SnNi nanoneedle support, can dramatically improve the availability of Pt during electrocatalysis, and thus elevate the catalytic activity. In addition, the efficient mass transfer of the 3D nanostructure reduced the onset potential. Furthermore, the catalyst achieved a favorable CO poisoning resistance and enhanced stability. After atomic interdiffusion, the catalytic activity drastically increased by 45%, and the other performances substantially improved. These results demonstrate the significant advantage and enormous potential of the atomic interdiffusion treatment in catalytic applications.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Liu Xinyu,Li Mingzhao,Shi Chonghua,An ShuQing,Wang Jing,Yao Shaowei
SnO 2 has a high theoretical capacity when used as an anode material for sodium-ion batteries, but has poor electrical conductivity. In this work, to enhance its electrochemical performance, Sn/SnO 2 /C composites were fabricated through a facile approach. Sn/SnO 2 /C composites were obtained by mechanical grinding of SnC 2 O 4 mixed with acetylene black and subsequent heat treatment in an inert atmosphere. In this material, SnO 2 provides higher capacity, while Sn not only provides higher capacity, but also increases the conductivity of the material. Additionally, the added carbon both improves the conductivity of the material and helps to distribute the material uniformly to alleviate the volume expansion of the Sn-based material. Results indicate that Sn/SnO 2 /C-519 exhibits excellent cyclic and rate performance. This paper provides valuable references for designing simple and low-cost anode materials for sodium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 2
·486-494
·
IF 2.047
Wang Xiaochun,Zhou Zhiwei,Lin Xuesong
In this work, we introduced two-dimensional (2D) WSe 2 with the lowest heat conductivity to enhance thermoelectric properties of the non-toxic and cost-effective SnTe. On one hand, the improved power factor can be attributed to the enhancement of Seebeck coefficient due to the decrease of low-energy carriers and minority carriers by the addition of WSe 2 -SnTe p - p -type heterojunction interface barriers. On the other hand, the thermal conductivity also decreased sharply by the heightened phonon scattering from the high-density stacking faults and multiscale hierarchical architectures. Ultimately, benefiting from the dual regulation effect of the introduction of 2D WSe 2 on the electro-acoustic decoupling, an improved figure of merit ( ZT ) of 1.0 is achieved for the composition of SnTe + 6 wt% WSe 2 at 873 K, which is enhanced by 134% in comparison with the pure SnTe sample. Moreover, the meaningful attempt represents an effective and feasible strategy for mixing SnTe with other compounds by the method of ball milling. Graphical Abstract
研究领域:
材料科学
·
热电学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2025
·Vol. 27
·期 2
·1-15
·
IF 2.6
Hui Xianghe,Fang Dong,Wang Guifang,Ran Feng,Zhang Xin,Fu Zewei,Ruzimuradov Olim
Perovskite hydroxystannate (MSn(OH) 6 ) has garnered considerable interest in recent years as a novel flame retardant characterized by its low toxicity and environmentally benign properties. In order to improve the flame retardancy and smoke suppression properties of epoxy resin (EP) matrices, transition metal hydroxystannate (MSn(OH) 6 , M = Fe, Co, Mn) was prepared by a ultrasonic-coprecipitation method and used as flame retardants. The synthesized composites were assessed for their flame retardant characteristics and mechanical properties through the measurement of the limiting oxygen index (LOI), the cone calorimetry test (CCT), and universal tensile testing. Upon the incorporation of 10 wt% of the MSn(OH) 6 flame retardants, the flame retardant of EP composites exhibited marked enhancement, especially manganese hydroxystannate (MHS). Compared with pure EP, the EP/MHS-10 composite demonstrated the best performance, reducing the peak of heat release rate (pHRR), total heat release (THR), total smoke production (TSP) by 60.0%, 14.4%, and 32.6%, respectively. During the process of combustion, the decomposition of MSn(OH) 6 results in the generation of non-flammable gases and water vapor. In the condensed phase, tin (Sn) and transition metals contribute to the formation of a more protective char residue. The residue serves as a physical barrier, effectively isolating the underlying epoxy (EP) matrix material from heat and oxygen.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Weijie Fan,Bingbing Bao,Yihang Li,Li Chen,Hui Dan,Yi Ding
Tin-based materials are promising for iodine capture. However, they suffer from the instability of adsorption product SnI 4 that is easily hydrolyzed even in atmospheric environment due to the presence of moisture. Herein, we report a strategy of constructing the hydrophobic microenvironment on Sn 0 @SBA-15 materials, which isolates moisture and subsequently stabilizes SnI 4 . Hydrophobic Sn 0 @SBA-15 materials (P-Sn 0 @SBA-15) were fabricated by polymethylhydrosiloxane (PHMS) modification and applied for iodine capture. The obtained P-Sn 0 @SBA-15 exhibited a record high iodine adsorption capacity (2599 mg/g) among inorganic adsorbents . The dominant adsorption mechanism was found that Sn 0 reacted with I 2 to form SnI 4 . Remarkably, SnI 4 in P-Sn 0 @SBA-15 was stable up to 3 months exposure to humid atmosphere, while almost all SnI 4 in Sn 0 @SBA-15 was hydrolyzed. The obtained P-Sn 0 @SBA-15 could be added to the list of iodine adsorbents due to its excellent adsorption capacity and stability. Moreover, the facile strategy could provide reference for the development of other functional materials .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 4
·805-813
·
IF 1.3
Xu Tianxing,Wu Jie,Li Yajuan,Xiao Hong
We synthesized size-controllable nanoparticles with homogeneous distribution of carbon and Sn/SnO 2 by a solvothermal method. The effects of different carbon content and hydrothermal time on the composition, morphology and electrochemical properties of the materials were investigated. Compared with bulk materials, nanoparticles materials not only have high specific surface area, but also can provide abundant reaction sites, thus enhancing the electrochemical activity of electrode materials. More importantly, the optimized microspheres Sn/8C-24 delivers a superior electrochemical performance, achieving a specific discharge capacity of 700.4 mAh·g −1 after 150 cycles at 0.5 A·g −1 , and the Coulomb efficiency reaches 98.65%, which is promising for anode of LIBs.
研究领域:
材料科学
·
能源存储与转换
✓ 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）