JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Haoxiang Zhong,Lingzhi Zhang
The low sulfur utilization and the serious shuttle effect of polysulfides severely hamper practical application of Li-S batteries. Herein, sulfur cathodes with the multi-functional structures, featured with double-layered hollow carbon sphere with up to 50 nm interlayer space (DLHC-50) in situ grown Co-SnS catalytic layer is designed and synthesized for lithium sulfur batteries. Co-SnS/DLHC-50 can encapsulate 72% sulfur, higher than 63% for Co-SnS/DLHC-20 due to the large interlayer spaces of DLHC-50. Meanwhile, polysulfides are also effectively restricted via physical entrapment from DLHC-50 as well as chemical binding between Co-SnS and polysulfides. Benefiting from the well-constructed host framework, Co-SnS/DLHC-50 @S shows higher specific capacity/capacity retention of 760.4 mA h g −1 /72.9% after 500 cycles at 0.5 C, than that of 546.5 mA h g −1 /62.2% and 668.9 mA h g −1 /62.2%, for DLHC-50 @S, and Co-SnS/DLHC-20 @S, respectively. In addition, the strategy can be also extended to prepare other metal oxides (sulfides)/DLHC-50 for wide applications. Therefore, this work demonstrates a promising route to combat some bottlenecks such as low sulfur utilization, and the shuttle effect of polysulfides for Li-S 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 ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Hanxiao Yan,Min Yang,Li Liu,Jing Xia,Yiting Yuan,Junfang Liu,Yue Zhang,Su Nie,Xianyou Wang
SnS/C nanofibers membrane (SnS/C NFM) has been synthesized by low-temperature vulcanization from SnO 2 /C nanofiber membrane (SnO 2 /C NFM), which is obtained via electrospinning using commercial nano SnO 2 as raw material followed by high-temperature carbonization. This method not only forms the high conductivity and stable carbon fiber skeleton in high temperature but also avoids the losing of tin source. The self-standing SnS/C NFM shows outstanding electrochemical properties as anode for sodium-ion batteries (SIBs) without adding any conductive agent and binder. Additionally, it exhibits much better performance compared to SnO 2 /C NFM and nano SnO 2 particles. After 200 cycles at 200 mA g −1 , it can provide high capacity of 324 mA h g −1 (up to 84.8% capacity retention rate), and also display a good rate performance. Such superb electrochemical performance can be attributed to the interconnection of the 3D conductive network to enhance the electrical conductivity of SnS, and effectively suppress the aggregation of SnS particles during the cycling process. Therefore, the self-standing SnS/C NFM is considered as promise anode materials for sodium-ion batteries.
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
CHEMISTRY-A EUROPEAN JOURNAL
·
2023
·Vol. 29
·期 23
·e202300009
·
IF 4.3
Qian Li,Fuyuan Yu,Yaru Cui,Juan Wang,Yan Zhao,Jianhong Peng
Graphical This work aims to improve conductivity and cycle stability of bare SnO 2 through constructing special p-n heterostructures and graphene oxide (GO) modification to promote charge transfer and electrochemical reversibility, protect the intrinsic materials and alleviate volume expansion. Further, the band structure and charge state density of SnS−SnO 2 @GO were simulated by first principles, whose accuracy was verified in the practical experiments subsequently. SnO 2 is a theoretically excellent transformed anode material with high theoretical capacity for SIBs. However, SnO 2 faces serious volume effect and high resistance, which greatly damages its electrochemical performance. Given that, the SnS−SnO 2 heterostructures is constructed with special internal electric field, which is beneficial to promote the transfer ability of sodium ions. Besides, the graphene oxide (GO) modification is carried out to isolate the intrinsic materials from direct contact with electrolyte, and alleviate volume expansion of the anode, ultimately promote the electrochemical performance. Furthermore, the structure and the conductivity characteristics of SnS, SnO 2 , SnS−SnO 2 and SnS−SnO 2 @ GO are simulated respectively by first principles and are compared with the correspondence experiment results to verify the accuracy of established models. Owing to the special p-n junction in SnS−SnO 2 @GO heterostructures, the resistance of SnS−SnO 2 @GO can be reduced to 36.23 Ω, much lower than that of SnO 2 (Rct=341.9 Ω). Notably, the combination of GO has effectively alleviated the volume expansion of SnS−SnO 2 @GO electrodes, and present excellent capacity higher than 384.7 mAh g −1 after 100 cycles. Thus, the efficient synthesis of SnS−SnO 2 @GO heterostructure electrodes with excellent performance for sodium storage is expected to provide valuable direction for SIBs anode materials.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Hao Sun,Martin R. Tillotson,Dawei Wang,Xu Zhao
The construction of a heterojunction piezo-photocatalyst is one of the most effective strategies to accelerate charge transfer and improve catalytic performance. A novel ternary heterojunction was synthesized by introducing SnS nanoparticles (NPs) onto the surface of a NiAl-LDH/g-C 3 N 4 (LDH/CN) nanosheets via a facile hydrothermal method. The separation and transfer paths of carriers was studied for the piezo-photocatalytic degradation of tetracycline (TC), a common antibiotic, under ultrasonic and visible light irradiation. The SnS/LDH/CN piezo-photocatalyst generated a built-in electric field by the piezoelectric effect, which was beneficial for the separation of electron-hole pairs. Furthermore, the Z-scheme heterojunction endowed with a larger surface area, abundant active sites, and improved light-harvesting capacity further improved piezo-photocatalytic performance for TC. In particular, a CLS-30 (30 wt% of SnS on LDH/CN) heterojunction exhibited the highest degradation efficiency with 98.5 % removal of TC (20 mg/L) in 60 min, which was higher than that of ultrasonic vibration (38.2 %) and visible light illumination (79.4 %). TC degradation efficiency remained at almost 90 % after 4 consecutive cycles. This work provides a novel viewpoint for designing high-performance and stable heterojunction piezo-photocatalysts for energy limited wastewater remediation applications.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yu Tong,Xi Chen,Hong-Peng Zhang,Jian-Yu Ling,Hao-Qun Zeng,Ke-Wei Zhang,Ming-Zhe Zhang
Ferroelectric materials exhibit switchable polarization and non-volatile characteristics, promising for applications in neural morphology calculations. Among them, multiferroic materials have garnered significant attention due to their simultaneous ferroelectricity and ferromagnetism. We synthesize Sm-doped SnS 2 wafer with interlayer screw dislocations through the vapor-liquid phase chemical deposition, high-temperature and high-pressure methods. Manufacturing a memory device based on Sm-doped SnS 2 wafer, which exhibits stable memory characteristics with a retention time of 10 6 s and can be repeated for up to 10 6 cycles. It can simulate the functional characteristics of biological synapses, such as excitatory postsynaptic currents, paired-pulse facilitation, and the transition from short-term to long-term plasticity. The recognition accuracy rate for handwritten numbers is as high as 92.5 %. Therefore, the addition of Sm leads to the formation of interlayer screw dislocations in the SnS 2 layers, which disrupts the symmetry of the system and causes the ferroelectric properties to emerge. The substitution of Sm for Sn closely integrates with the SnS 2 lattice, providing a stable local magnetic moment. The 4f electrons occupy the energy band near the Fermi level and undergo orbital hybridization with S, resulting in the formation of ferromagnetic exchange interactions, achieving the ferromagnetism. This work opens prospects for fabricating synaptic devices based on ferroelectric switching, which can be used in neuromorphic systems.
研究领域:
材料科学
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神经形态工程
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凝聚态物理
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铁电与多铁材料
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纳米电子学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Jinyong Hu,Yu Zhao,Bohao Liu,Yong Zhang
The exploitation of visible-light-activated gas sensors based on molybdenum disulfide (MoS 2 ) has been extensively investigated and is expected to hold tremendous potential in emerging fields of indoor gas sensing applications activated by daylight lamp. Enlightened by the localized surface plasmon resonance (LSPR) effect of Au nanoparticles in visible light spectrum and the abundant active sites of SnS quantum dots, an indoor white light activated gas sensor based on Au@MoS 2 /SnS nanocomposites is rationally developed for the high sensitive detection of nitrogen dioxide (NO 2 ). Under the white light irradiation, the as-proposed gas sensor demonstrates an enhanced response exceeding 25-folds toward 1 ppm of NO 2 compared with the pristine MoS 2 gas sensor. Moreover, the white light-activated Au@MoS 2 /SnS gas sensor manifests excellent repeatability, rapid response/recovery speed (7/8 s), ppb-level detection limit, favorable long-term stability, and remarkable selectivity toward NO 2 . These enhanced gas sensitive performances principally stem from the interfacial charge transfer effect within the Au@MoS 2 /SnS composite material and the multiplied gas-sensitive pathways facilitated by the LSPR effect originating from the Au nanoparticle cores. This work paves an efficacious avenue for the development of high-performance gas sensitive devices operable at room temperature, thereby facilitating innovative advancements of gas sensing technology in various Internet of Things (IoTs) applications.
研究领域:
材料科学
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环境科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yuting Tang,Fei Wang,Chang Nie,Haoxi Dong,Yiming Bai,Mingshu Zhao,Sen Yang
Current application of SnS 2 -based anodes in sodium-ion batteries fails to meet the demand for higher Na + storage capacity due to the structural pulverization induced by significant volume changes during cycling. Herein, a novel composite of hollow C@SnS 2 /SnS@C cubes with excellent diffusion kinetics and structural stability from stepwise Na + storage is designed. The SnS with gentle pseudocapacitive reaction acts as the self-supporter to prevent the collapse of SnS 2 /SnS heterostructure during the Na + insertion/extraction. Together with the clamping of double carbon layers and hollow construction, the volume change caused structural instability in heterostructure is effectively alleviated. The rapid transport of electrons and ions within the built-in electric field of heterostructure endows the composite an excellent diffusion kinetics, which is generated from the narrow bandgap and outstanding Na + absorption of heterostructure according to the first-principle calculation. Thus, the as-prepared composite maintains a remarkable capacity of 547.9 mAh g −1 after 200 cycles at current density of 0.5 A g −1 . Even a capacity of 502.5 mAh g −1 with a low attenuation rate of 0.035 % per cycle is achieved at 2 A g −1 after 1000 cycles. The work proposes an effective approach to achieve effective Na + storage of SnS 2 -based anodes with long-lasting structural stability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zijian Zhang,Xiuyang Tang,Yu Gao,Xinming Ma,Kaihan Chang,Lipin Chen,Song Xue,Gangri Cai,Jin Shi Zhao
Two-dimensional (2D) materials have drawn extensive interest for applications in thin-film electronics, optoelectronics, and sensing. Among them, tin disulfide (SnS 2 ) is particularly attractive owing to its low cost, environmental friendliness, and excellent chemical and thermal stability. Importantly, the synthesis and deposition strategies for 2D materials play a critical role in controlling sulfur vacancies, tuning crystal phase and morphology, and ultimately determining device performance. Here, we demonstrate a solution-processed memristor based on SnS-SnS 2 composite thin films fabricated by spin-coating followed by sequential thermal reduction. Partial conversion of SnS 2 into SnS produces a phase-engineered architecture, where vertically aligned SnS domains are embedded within the SnS 2 matrix. Optimizing the SnS/SnS 2 ratio enhances resistive switching (RS) characteristics and synaptic emulation. The improved device behavior is mainly attributed to the controlled generation and migration of sulfur vacancies, together with internal phase modulation enabled by the vertical stacking structure. This scalable, low-temperature strategy provides a promising route toward high-performance neuromorphic memory devices.
研究领域:
材料科学
·
纳米电子学
·
神经形态计算
·
薄膜技术
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2024
·Vol. 26
·期 12
·1779-1788
·
IF 2.6
Songwei Ye,Zunxian Yang,Yuliang Ye,Zhiming Cheng,Hongyi Hong,Zhiwei Zeng,Zongyi Meng,Qianting Lan,Hui Zhang,Ye Chen,Jiaxiang Wang,Yuting Bai,Xudong Jiang,Benfang Liu,Jiajie Hong,Tailiang Guo,Shen Xu,Zhenzhen Weng,Yongyi Chen
A carbon layer usually covers the outside of SnS/MoS2 nanosheets produced by a traditional C-layer cladding process, resulting in a material with a lower specific surface area and fewer active sites. Therefore, it is difficult for these as-obtained SnS and MoS2 materials to be directly employed as electrode materials. There is a great need to develop a new C-layer coating process that can effectively coat active materials and simultaneously increase the specific surface area. In this study, novel SnS@C/MoS2 nanotubes were designed and synthesized by a self-sacrificing template method (SSTM). Specifically, MoO3 nanoribbons were first coated with Sn to produce Sn-MOF, and SnS@C/MoS2 nanotubes with a particular nanosheet architecture preserved were achieved via an elegant SSTM vulcanization strategy. This SSTM preparation method not only retains the nanosheet microstructure of the surface but also leaves a thin layer of amorphous carbon on the surface, which greatly improves the conductivity and effectively improves the cycling stability. In addition to above-mentioned advantages, there is a synergistic effect between the various components of the SnS@C/MoS2 nanotubes, which has a positive effect on the electrochemical performance. When used as the anode of a lithium-ion battery (LIB), the SnS@C/MoS2 composite can maintain a specific discharge capacity of 970.9 mAh g−1 after 500 cycles at a current density of 1 A g−1, and a specific discharge capacity of 778.1 mAh g−1 even after 1000 cycles at a current density of 2 A g−1. This method provides a reference for the synthesis of other nanostructured materials.
研究领域:
材料科学
·
纳米技术
·
电化学
·
能源存储
·
无机合成
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Shuo Yu,Kui Hao,Na Zhu,Le Sun,Fangzhou Zhang,AiJun Li,Jianxin Tu
High-capacity Sn-based anodes for sodium-ion batteries (SIBs) face challenges from volume expansion, active material aggregation, and poor conductivity, collectively hindering electrochemical performance. Herein, we propose a synergistic spatial confinement strategy: Ultrafine SnO₂-SnS heterojunctions are uniformly anchored within a hierarchical porous graphene aerogel (GA/CSOS) via controlled sequential hydrothermal-sulfidation and SDS-assisted self-assembly. The GA/CSOS composite delivers exceptional stability and rate capability, achieving 554 mAh g⁻¹ after 200 cycles at 0.1 A g⁻¹ (with almost Coulombic efficiency >95 % after initial activation) and retaining 234 mAh g⁻¹ at 2 A g⁻¹ . The remarkable electrochemical performance originates from: (i) spatially confined ultrafine heterojunctions with uniform distribution suppressing aggregation/pulverization, and (ii) the hierarchical graphene providing conductive networks and volume buffering via mesopores. This structural design dramatically releases the theoretical capacity of the active material and promotes efficient charge transfer kinetics through continuous electronic pathways and layered ion diffusion channels. Our work establishes a novel design paradigm for high-energy-density SIBs through spatial confinement of uniformly dispersed ultrafine heterojunctions in hierarchical conductive frameworks.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
Science Bulletin
·
2022
·
IF 20.577
Ying Wang,Hongguan Li,Silin Chen,Boyin Zhai,Shuanlong Di,Guangying Gao,Sangwook Lee,Sangeun Chun,Shulan Wang,Li Li
As a star representative of transition metal sulfides , SnS is viewed as a promising anode-material candidate for sodium ion batteries due to its high theoretical capacity and unique layered structure. However, the extremely poor electrical conductivity and severe volume expansion strongly hinder its practical application while achieving a high reversible capacity with long-cyclic stability still remains a grand challenge. Herein, different from the conventional enhancement method of elemental doping, we report a rational strategy to introduce PO 4 3− into the SnS layers using phytic acid as the special phosphorus source. Intriguingly, the presence of PO 4 3− in the form of Sn–O–P covalent bonds can act as a conductive pillar to buffer the volume expansion of SnS while expanding its interlay spacing to allow more Na + storage, supported by both experimental and theoretical evidences. Profiting from this effect combined with microstructural metrics by loading on high pyridine N -doped reduced graphene oxide , the as-prepared material presented an unprecedented ultra-long cyclic stability even after 10,000 cycles along with high reversible capacity and excellent full-cell performances. The findings herein open up new opportunities for elevating electrochemical performances of metal sulfides and provide inspirations for the fabrication of advanced electrode materials for broad energy use.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Yuanyuan Dong,Jinming Li,Lei Zhang
Epinephrine (EP) is a catecholamine neurotransmitter produced from l -tyrosine (L-TY), which usually coexists with each other in biological fluids. Moreover, their abnormal concentrations are related to multiple diseases, so sensitive simultaneous determination of EP and l -TY is important. Herein, we delicately designed 3D SnS@Co ,N- C hierarchical hollow microrod assembled from 2D SnS nanoplates vertically anchored on the MOF derived cobalt, nitrogen co-doped carbon rod (Co ,N- C) as electrode materials using one-step hydrothermal method, followed by thermal annealing in N 2 , and accompanying sequential phase transformation (2D SnS 2 nanoplates in-situ reduced to SnS phase). Obtained hierarchical hollow carbon microrod with beneficial heteroatom doped not only provided sufficient electroactive sites, but also increased the conductivity of the materials. As-fabricated strongly coupled 3D SnS@Co ,N- C microrod displayed enhanced electrochemical performance, offering highly sensitive sensing responses toward biomolecules EP and L-TY. Differential pulse voltammetry (DPV) study indicated that the sensor offered wide linear ranges of 0.01–300.0 and 0.01–250.0 μmol/L, and low detection limits of 3.3 and 3.1 nmol/L for EP and L-TY respectively. The constructed sensor was successfully applied to monitor simultaneously EP and L-TY in milk, human urine and serum samples with high accuracy and reliability.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）