Nano Energy
·
2021
·
IF 17.881
Lin-bo Tang,Bao Zhang,Tao Peng,Zhen-jiang He,Cheng Yan,Jing Mao,Kehua Dai,Xian-wen Wu,Jun-chao Zheng
As a two-dimensional layered material, SnS is considered a promising candidate anode material for sodium storage due to its high theoretical capacity (1022 mA h g −1 ) and large interlayer spacing (4.33 Å). However, its application is hindered by its large volume expansion and low electronic conductivity . Herein, a unique MoS 2 /SnS@C hollow hierarchical nanotube with self-supporting structure was synthesized through a facile solvothermal reaction. The results indicate that the hollow nanotube structure can support the material structure and provide a large sodium-ion migration channel. In addition, the heterojunction that formed between SnS and MoS 2 can effectively reduce the kinetic barrier of sodium-ion diffusion. Furthermore, the hollow hierarchical nanotube can effectively alleviate the radial and hoop stresses of the SnS sodiation process, inhibit the volume expansion of the material, and increase the capacitance contribution ratio of the material at a high rate. The MoS 2 /SnS@C composites used as anode materials in sodium-ion batteries (SIBs) delivered excellent rate and cycle performance. The discharge capacity was about 325 mA h g −1 at a high current density of 15 A g −1 , and it remained at about 292 mA h g −1 after 2000 cycles at 5 A g −1 current density.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
He Tian,Xiancheng Meng,Juehan Yang,Chao Fan,Shuo Yuan,Xia An,Chun Sun,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Zhongming Wei,Erping Li
Two-dimensional (2D) nanomaterials have been attracting intensive interest due to their unique physical and optoelectronic properties. Van der Waals nanolayered heterostructures based on different 2D nanomaterials provide a state-of-the-art platform for investigating the physical phenomena and have extended the applications of 2D nanomaterials, leading to an era of next-generation high-performance electronic and optoelectronic technology. Herein, vertical 2D SnS/SnS2 p–n and SnSe2/SnS2 n–n nanolayered heterostructures are constructed by exfoliating individual materials and stacking them artificially. The two types of back-gate field-effect phototransistors show clear rectifying behaviors with the existence of band offset and excellent optoelectronic performances. The SnS/SnS2 p–n nanolayered heterostructure shows an ambipolar behavior with a hole mobility of 6.96 cm2·V–1·s–1 and electron mobility of 0.68 cm2·V–1·s–1, while the SnSe2/SnS2 n–n nanolayered heterostructure shows an intense n-type behavior with electron mobility of 3.78 cm2·V–1·s–1 and a high on/off ratio of over 105. Interestingly, due to the band alignments and built-in potentials in the two types of nanolayered heterostructures, the phototransistors exhibit enhanced responsive performances to illuminations of three-primary-color lasers (λ = 405, 532, and 650 nm) compared to the individual components. The SnS/SnS2 phototransistor shows a high photoresponsivity of 3567 A W–1, a high detectivity of 3.64 × 1013 Jones, and a fast response time of 0.8 ms. The SnSe2/SnS2 phototransistor also exhibits a high photoresponsivity of 1793 A W–1 and a fast response time of 15.4 ms.
研究领域:
材料科学
·
纳米技术
·
光电技术
✓ 已验证
产品关联
DOI
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
·
2014
·
IF 2.613
Yoshiaki Oda,Heping Shen,Lin Zhao,Jianbao Li,Mitsumasa Iwamoto,Hong Lin
An environmentally friendly solid-state quantum dot sensitized solar cell (ss-QDSSC) was prepared by combining colloidal SnS QDs as the sensitizer and organic hole scavenger spiro-OMeTAD (2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobifluorene) as the solid-state electrolyte, and the energy alignment of SnS and TiO2 was investigated. The bandgap of colloidal SnS QDs increased with decreasing particle size from 14 to 4 nm due to an upshift of the conduction band and a downshift of the valence band. In TiO2/SnS heterojunctions, the conduction band minimum (CBM) difference between TiO2 and SnS was as large as ∼0.8 eV; this difference decreased with decreasing particle size, but was sufficient for electron injection from SnS nanoparticles of any size into TiO2. Meanwhile, the sensitizer regeneration driving force, that is, the difference between the valence band maximum (VBM) of SnS and the work function of the electrolyte, showed an opposite behaviour with the SnS size due to a downward shift of the SnS VB. Consequently, smaller SnS QDs should result in a more efficient charge transfer in heterojunctions, revealing the advantages of QDs vs larger particles as sensitizers. This prediction was confirmed by the improved photovoltaic performance of ss-QDSSCs modified with SnS nanoparticles, which peaked for 5–6 nm sized SnS nanoparticles due to the balance between electron injection and sunlight absorption.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2017
·
IF 4.873
Xuejiang Cheng,Lei Wang,Xin Wang,Guangming Chen
Organic polymer/inorganic thermoelectric (TE) composites are emerging green energy materials for diverse applications including harvesting waste or low-quality heat, local cooling, sensing and wearable electronics . Here, we report flexible films of new TE composites by employment of SnS nanobelt into polymer matrix . First, the SnS nanobelts with high purity were prepared by a convenient hydrothermal process. Then, the poly (3,4-ethylenediox-ythiophene): poly (styrenesulfonate) (PEDOT:PSS)/SnS nanobelt composites were obtained by a solution mixing procedure aided by ultrasonication . The structure and morphology of the SnS nanobelts as well as the PEDOT:PSS/SnS composites were characterized by X-ray diffraction (XRD) and field-emission scanning electroscopic (FESEM) techniques. The effects of the SnS content and the dispersing agent (organic solvent) on the dispersion state and the TE performance for the composites were investigated. The highest power factor at room temperature reached 27.8 ± 0.5 μW m −1 K −2 for the PEDOT:PSS/SnS nanobelt composite prepared in N , N -Dimethylformamide. The present study opens a novel avenue to exploit of excellent polymer TE composites by introduction of inorganic nanoparticles with large Seebeck coefficients .
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
C.-H. Sun,X.-Q. Li,T.-M. Zhu,H.-Y. Yu,Y.-M. Liang,Y.-H. Sun,J.-M. Nan
SnS is a promising anode material for sodium-ion batteries (SIBs) due to its high theoretical specific capacity, but the poor intrinsic conductivity, bulk expansion and shuttle effects brought by polysulfides seriously limit its practical use. Here, soft/rigid SnS&TiS 2 compounds with carbon nanotubes (ST@CNTs) is designed to overcome the shortcomings. The rigid TiS 2 , as the strong backbone of SnS&TiS 2 , relieves the expansion stress caused by SnS after sodiation, together with CNTs improve the materials conductivity. TiS 2 generates many sulfur defects under the synergistic effect of SnS, which can regulate the sodium-ion embedding sites to stabilize the compound structure and decrease the sodium-ion diffusion energy barrier. Moreover, rigid TiS 2 can adsorb polysulfides induced by SnS, thus suppresses the shuttle effect and improves the cycling and rate performances. Fortunately, the above conclusions are confirmed by the DFT calculations. The ST@CNTs provide a specific capacity of 550 mAh/g at 1.0 A/g after 300 cycles, and a high-rate capability of 443 mAh/g at 2.0 A/g. This soft/rigid misfit strategy combines the advantages of high modulus of rigid layers and high sodium-ion storage capacity of soft layers, which gives an idea for the development of new anode candidates for SIBs.
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
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Meng Lan,Xiaoli Dong,Nan Zheng,Yubo Zhang
The construction of green and efficient photocatalysts for the treatment of heavy metals in wastewater through simple strategies is still an extremely huge challenge. Herein, SnS/Bi 2 S 3 Z-scheme heterostructure photocatalyst with abundant sulfur vacancies was fabricated by one-pot hydrothermal approach and exploited for the efficient elimination of hexavalent chromium (Cr(VI)). Due to the tight contact interface of the in-situ heterostructures, charge transfer was carried out quickly and photogenerated carrier separation was accelerated. Moreover, the unique charge transmission path of the Z-scheme can efficiently inhibit the reorganization of active carriers. The abundant sulfur vacancies can further improve the photogenerated carrier separation efficiency. SnS/Bi 2 S 3 -2 can achieve effective reduction of Cr(VI) with the efficiency of 91.6 % under 30 min visible light illumination. This study provides a promising photocatalyst for the treatment of chromium hexavalent sewage, and effectively promotes the exploration of one-step construction of heterostructure photocatalyst in the field of water environment remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Limei Xu,Lin Ma,Xiaoping Zhou,Yan Ling,Xiaolang Wang,Meifeng Chen
A simple hydrothermal plus annealing method has been developed to fabricate SnS/NC nanocomposites and their electrochemcial Li-storage performance has also been investigated. The as-prepared composites are characterized by XRD, SEM, EDS, Raman, BET and XPS. In this composite, ultrathin SnS nanosheets are well hybridized with glucosamine-derived nitrogen-doped carbon to form hierarchical porous architectures with large surface areas. Benefiting from the desirable structural merits as well as the generated synergism between components, the SnS/NC composite electrode delivers an enormously enhanced electrochemical lithium-storage performance including large reversible capacity of 832 mA h g −1 after 100 cycles, enhanced cyclability and superior high-rate capability.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 5
·056513
·
IF 4.386
Jiale Deng,Juan Gao,Mei Liu,Yanfen Wang,Lingcheng Zheng,Yang Li,Yin Liu
TiO2/SnS/MoS2 ternary nanorod arrays were synthesized on a fluorine-doped tin oxide (FTO) conductive glass by a successive hydrothermal method. The morphology, microstructure, optical properties, photodegradation activity, photoelectrochemical performance, and charge transport mechanism of TiO2/SnS/MoS2 were systematically studied. It was found that SnS and MoS2 with a narrow bandgap can facilitate light absorbance of TiO2/SnS/MoS2 heterostructures across the visible range, improving the utilization of sunlight. TiO2/SnS/MoS2 exhibits the maximum photodegradation rate (61.54%) for Rhodamine B (RhB) in 60 min with a pseudo-first-order rate constant (0.0122 min−1), which is about 5.16 times better than that of TiO2. As a photoanode, TiO2/SnS/MoS2 has the highest photocurrent (0.841 mA cm−2), which is approximately 8.32 times better than those of TiO2. The enhanced photocatalytic and photoelectrochemical performance of TiO2/SnS/MoS2 is ascribed to the Z-scheme mechanism determined by the detection of active species and the synergistic effect of SnS and MoS2 co-decoration.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Haijun Ye,Hongqin Li,Fangqing Jiang,Jiao Yin,Hui Zhu
Tin-based compounds have incurred tremendous attention due to their higher specific capacities than their analogues for lithium storage. Unfortunately, the undesirable electrical conductivities and huge volume variations during cycling processes coupled with Li + intercalation and de-intercalation will lead to severe capacity fading and poor cycling stability. To address these problems, nitrogen-doped carbon-coated SnO 2 /SnS (SnO 2 /SnS@N-C) composite was in situ synthesized by virtue of a simple solvothermal reaction and subsequent post-treatment. Herein, the heterostructures between SnO 2 and SnS were designed to accelerate charge transfer by using the effect of internal electric field and improve the dispersion among particles. While coating the nitrogen-doped carbon on heterostructures aimed to improve electrical conductivities and relieve huge volume alterations during the processes of Li + insertion and de-insertion. To our satisfactory, the as-prepared SnO 2 /SnS@N-C composite as anodes for lithium-ion batteries can display a high specific capacity (1050 mAh g −1 at 100 mA g −1 ), enhanced rate capability, and long cycle life (550 mAh g −1 after 100 cycles), which outperforms both SnO 2 @N-C and SnS@N-C. The promotion of electrochemical performance demonstrates that Tin-based anode materials with such optimized structures have broad prospects in the applications of energy storage field.
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 ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Dongyu Bian,Xiaoqin Cheng,Huijun Li,Senrong Qiao,Xiaomin Wang
SnS has been extensively studied as an anode material for sodium storage owing to its high capacity and unique layer spacing. However, the rapid capacity decay and sluggish reaction kinetics result in SnS exhibiting poor electrochemical performance , which prevents its practical application. Herein, the hollow SnS/ZnS nanoboxes (ZSS@NC) with rich phase boundaries have been constructed and utilized as the anode material of SIBs . The in-situ XRD analysis clearly illustrates the structural transformation of the electrode material during sodium storage and the regeneration of the heterointerface. Furthermore, kinetic analysis combined with ex-situ tests show that the excellent properties of heterostructure composites are inextricably linked to the synergistic effect of heterojunction surfaces. As expected, the ZSS@NC heterostructure provides a reversible capacity of 553.5 mA h g −1 at 0.2 A g −1 and good rate capability with an average capacity of 62.3% at 5 A g −1 compared to 0.1 A g −1 . The elevated Na-storage properties indicate that the heterointerface engineering strategy has a broad promise for improving the application of electrode materials.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2020
·
IF 6.984
Bin Xu,Chuanhe Ma,Xiaoshuang Lu,Yulin Liu,Qiao Zhang,Ye Chen,Pingxiong Yang,Junhao Chu,Lin Sun
Cu 2 ZnSn(S,Se) 4 (CZTSSe) has received considerable attention as the promising absorber for thin-film solar cells. For traditional selenization process, the issues of Sn-loss, lower S/(S + Se) ratio, and unsuitable back contact interface extensively exist in CZTSSe solar cells. In present work, SnSe and SnS powder is introduced during selenization process, respectively. The effects of SnSe and SnS powder on CZTSSe films and the Mo/CZTSSe interface have been comprehensively studied. We discover that SnS not only can provide the Sn-contained vapor in selenization process but also offer S-vapor. Due to the presence of Sn-contained vapor, the number of voids in the CZTSSe absorber and Mo/CZTSSe interface decreases remarkably and the Sn-loss is effectively suppressed. The thickness of Mo(S,Se) 2 layer is significantly reduced, and the S/(S + Se) ratio in CZTSSe bulk obviously increases owing to the presence of S-vapor. As a consequence, the open-circuit voltage and fill factor of the solar cell significantly increase and the CZTSSe solar cell with efficiency of 10.07% (total area) is successfully fabricated.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yangyang Li,Ji Li,Ting Li,Xiaoli Cheng,Yingming Xu,Shan Gao,Lihua Huo
Chlorine (Cl 2 ), a toxic and hazardous gas with a pungent odor, has already posed threat to air quality and human health. Therefore, developing chlorine sensors with high response and low power consumption is crucial. In this work, raspberry-like SnO 2 decorated uniformly with SnS nanoparticles was synthesized via a facile solvothermal method followed by an in-situ sulfurization process, which can be used for highly selective and sensitive detection of Cl 2 at 50 °C. The SnS/SnO 2 sensor exhibits ultrahigh response (R g /R a = 1136) toward 10 ppm Cl 2 at optimal working temperature of 50 °C, achieving low detection limit down to 0.05 pp m (S = 1.52), which is 2.5 times higher than that of pure SnO 2 sensor. Its superior sensing performance can be attributed to the formation of the p-n heterostructure, which accelerates electron transfer within the material. More importantly, the as-prepared SnS/SnO 2 sensor still exhibits effective and stable detection performance toward residual chlorine in daily life, significantly extending its practical applicability and providing valuable reference for developing high-performance near room-temperature gas sensors.
研究领域:
材料科学
·
气体传感技术
·
纳米技术
·
环境监测
✓ 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）