Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 27
·10719-10726
·
IF 8.262
Yong Jiang,Yazhi Feng,Baojuan Xi,Shuangshuang Kai,Kan Mi,Jinkui Feng,Junhao Zhang,Shenglin Xiong
Well-distributed graphene sheets doped with nitrogen (NGSs) were prepared via a thermal annealing strategy with the use of cyanamide. The cyanamide can efficiently restrain the conglomeration of the resultant graphene sheets and simultaneously ensure the doping of nitrogen. Followed by the next-step of the low-temperature solvothermal route, uniform ultrasmall tin sulfide (SnS2) nanocrystals were readily grown on the preformed NGS (denoted as SnS2–NGS). Benefiting from the synergistic function between NGSs and SnS2, the resultant composites exhibit excellent electrochemical performance. When evaluated as anode materials for lithium-ion batteries (LIBs), SnS2–NGS with a moderate weight ratio of SnS2 delivers outstanding electrochemical performance giving a high reversible capacity of 1407 mA h g−1 at 200 mA g−1 after 120 cycles. The composites can also maintain a reversible capacity of about 200 mA h g−1 at a high current density of 10 A g−1. The lithium-ion storage ability of the prepared SnS2–NGS electrode is at the top rank in comparison with those of other studies. The obtained composites also achieved good sodium storage ability.
研究领域:
材料科学
·
能源存储
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Jianhui Li,Shaobo Han,Chenyu Zhang,Wei Wei,Meng Gu,Lingjie Meng
SnS2 has received tremendous attention as an anode material for lithium-ion batteries owing to its high theoretical capacity and low cost. However, its applications are limited by its inferior cycling stability and poor rate performance. In this study, graphene@SnS2 heterojunction nanocomposites are synthesized using a microwave-assisted solvothermal approach on liquid-phase exfoliated graphene (LEGr). Compared with graphene oxides, LEGr layers with an intrinsic atomic structure show extraordinary conductivity and serve as robust substrates for in situ growth of SnS2 with improved interfacial contact. A LEGr-derived SnS2 hybrid shows remarkable storage capacity, superior rate capability, and excellent cycling stability. The storage capacity remains at 664 mAh g–1 after 200 cycles at 300 mA g–1 current density. Furthermore, lithiation-induced reactivation of LEGr-based SnS2 is investigated using in situ transmission electron microscopy, giving an in-depth explanation of the electrochemical reaction mechanisms.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
PubMed
高影响因子
IEEE ELECTRON DEVICE LETTERS
·
2024
·
IF 4.1
Xiyu Jia,Weishuai Duan,Mingchen Xu,Gaoning Fan,Pengyu Zhou,Yonghui Zhang,Hongxing Zheng,Mengjun Wang,Chao Fan
Near-violet (NV) detectors based on two-dimensional materials have attracted much attention due to their atomic-scale thickness and various band gaps. Among them, tin disulfide (SnS
2
) has demonstrated significant potential for high-performance NV detectors due to its unique photoelectric properties. However, SnS
2
-based NV detector still have drawbacks such as low responsivity and high dark current. In this work a tri-layer van der Waals heterojunction of tin disulfide/h-boron nitride/tin selenide (SnS
2
/h-BN/SnSe) is proposed. The detector based on such tri-layer heterojunction exhibits an excellent self-powered detection performance to 405-nm NV illumination with a responsivity of 1.5 AW
-1
, a low dark current of 2.6 pA, and a high fill factor of 51.8%, superior to detectors based on SnS
2
/SnSe bi-layer heterojunctions and most other two-dimensional materials. This study provides an efficient optimizing strategy for SnS
2
-based self-powered detector, thereby offering an opportunity for implementing innovation in NV detectors.
研究领域:
材料科学
·
光电子学
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Jinhui Liu,Jing Cheng,Wanqing Wu,Jiaqi Niu,Ziyang Zhang,Ping Guo,Min Du
The rapid detection of polyethylene terephthalate (PET) nanoplastics (PET NPs) is hindered by their low concentration, high mobility and lack of a distinguishable interface with other nanoplastics. In this study, we developed an SnS 2 @MoS 2 /APTES amino-functionalized photoelectrochemical sensor capable of detecting PET NPs with high specificity. The SnS 2 @MoS 2 heterojunction synthesized via in situ hydrothermal synthesis and the APTES self-assembled amino-functionalized interface enable PET NPs to interact with amino-functionalized interface at multiple sites through oxygen-containing groups such as ester groups, carbonyl oxygen and ether oxygen. The sensor exhibits a detection range of 0.5-800 μg mL −1 for PET NPs, with a detection limit of 0.17 μg mL −1 . DFT calculations further indicate that the PET-APTES system exhibits a lower adsorption energy (−1.37 eV) and a more significant interfacial charge rearrangement, demonstrating that the APTES amino siloxane interface exhibits a polymer structural selectivity toward PET. Furthermore, this PEC sensor exhibits good recovery rates (96.04%-102.76%) in practical water samples such as seawater, bottled water and tap water. It provides a new method for interface recognition and signal conversion for the specific PEC detection of PET nanoplastics.
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Energy & Environmental Materials
·
2026
·
IF 13.8
Han Zhang,Mingyu Gao,Jiajia Deng,Yan Wang,Yingru Li,Xinjian Song,Rong Li,Jianfeng Tan
Traditional inorganic semiconductor gas sensors operate at elevated temperatures and exhibit inherent rigidity and brittleness, thereby limiting their application in wearable electronics. Herein, organic–inorganic YSZ@PANI/SnS 2 heterojunction composite nanofiber film are fabricated through a sequential process involving electrospinning, oxidative polymerization, and hydrothermal treatment. Benefited from the employment of PANI interfacial layer, biomimetic “branch-leaf” structure featuring vertically grown, network-like SnS 2 nanosheets, the stress and energy are dispersed and dissipate effectively, therefore enhance the mechanical flexibility. Simultaneously, the vertically staggered SnS 2 nanosheets accelerating the gas diffusion/transmission and providing abundant active sites. The formation of PANI/SnS 2 heterojunction, which endows the composite with elevated conductivity, reaction activity, and carrier transport separation efficiency. At room temperature (RT, 25 °C), the device exhibits high response value and response/recovery times of 9.35 and 12/25 s to 2 ppm NO 2 , respectively. Furthermore, the device maintains satisfactory responsiveness even under bending conditions. This research presents a promising novel approach for fabricating organic–inorganic composite nanofibers, which may contributes to the development of flexible RT gas sensors.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2016
·
IF 2.331
Xueliang Li,Linbo Chu,Yiyi Wang,Lisheng Pan
Tin sulfide-anchored sulfur-hollow carbon nanospheres (S/AHCNS-SnS 2 ) composites are synthesized by uniformly dispersing conductive SnS 2 particles into hollow carbon nanospheres activated with potassium hydroxide, followed by impregnating sulfur. Surface morphology and structure of this composite are characterized using a field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), Brunauer–Emmett–Teller (BET) method, X-ray power diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The first discharge capacity of the sample containing 10 wt.% SnS 2 exhibits a high special capacity value of about 1237.5 mAh g −1 at 0.2 C, and after 200 cycles retains 924 mAh g −1 . Tin sulfide particles play a favorable role on adsorption towards polysulfides which would influence electrochemical process. This strategy of immobilization of sulfur with small amount of metal sulfide particles anchored in AHCNS provides a considerable approach to elevate the sulfur loading, coulombic efficiency, and cycling stability for Li–S batteries.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Long Li,Huyin Su,Licheng Zhou,Zhixiang Hu,Tiankun Li,Bingbing Chen,Hua-Yao Li,Huan Liu
Metal sulfide-based gas sensors have the advantage of high sensitivity at room temperature, enabling high integration and low power consumption. However, a trade-off between low baseline resistance and good long-term stability at room temperature still needs to be addressed. Therefore, a single-atom Ce-targeted regulation strategy for p-SnS/n-SnS 2 was proposed. By doping different amounts of Ce, the amount and size of SnS quantum dots on the surface of SnS 2 can be regulated. Furthermore, Sn-S-Ce bonds are formed by combining single-atom Ce with SnS, which effectively hinders the growth and oxidation of SnS quantum dots, as evidenced by STEM, XPS, DFT, FTIR and EAXFS methods. Due to the unique energy band structure of p-SnS and n-SnS 2 , Ce-doped SnS quantum dots serve as electronic sensitizers, effectively increasing the carrier concentration in SnS 2 . The optimal gas sensor based on the 1% Ce-doped SnS/SnS 2 composites enables high sensitivity (with a response of 22.1 to 1 ppm NO 2 ), ultralow detection limit (1 ppb), excellent long-term stability at room temperature, and a lower baseline resistance. This engineering strategy of metal sulfide semiconductor heterostructures through single-atom targeted regulation provides new insights for further optimizing the composite system.
研究领域:
材料科学
·
半导体物理
·
传感技术
·
纳米材料
·
表面化学
·
环境监测
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高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 23
·5006-5015
·
IF 6.569
Ruozhen Wu,Juanyuan Hao,Tingting Wang,Shengliang Zheng,You Wang
The two-dimensional layered metal dichalcogenides (LMDs) SnS2 is an interesting candidate for high-performance NO2 gas sensors. However, most SnS2-based NO2 sensors are usually inert for detecting ppb-level NO2 at room temperature (RT) because of the intrinsic features of a large bandgap, poor conductivity, and lack of active sites. Herein, we successfully endowed SnS2 with ppb-level NO2 detection at RT by using a carbon (C)-doping strategy. Compared to the pristine SnS2 showing a negligible response toward NO2 at RT, the C-doped SnS2 exhibited an excellent response (481.3% for 1 ppm and 146.5% for 100 ppb) with full recovery. The sensitivity toward ppb-level NO2 was as high as 1200% ppm−1. Moreover, the experimental and theoretical limit of detection (LOD) were down to 10 ppb and 0.3 ppb, respectively. Such impressive gas-sensing performance of C-doped SnS2 at RT was due to the doping-mediated synergistic effect of energy-band modification and the presence of an S vacancy. The results provide a real solution for developing high-performance LMDs-based gas sensors.
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Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 6
·3300-3310
·
IF 11.301
Shundong Guan,Xiuli Fu,Bo Zhang,Ming Lei,Zhijian Peng
As a new type of electrochemical energy storage system, aqueous battery–supercapacitor hybrid (BSH) devices are attracting increasing interest due to their high energy and power density, high security, and low cost. Herein, hierarchical NiS/SnS2 heterogeneous nanowall arrays on carbon cloth (NiS/SnS2@CC) are synthesized via a simple cation-exchange method using SnS2@CC as the precursor. Benefiting from the maximum use ratio of the active materials and the synergistic effects between the SnS2 core and the NiS shell, NiS/SnS2@CC delivered an ultrahigh specific capacity of 430.38 mA h g−1 at a current density of 2.5 mA cm−2 (1.16 A g−1) with excellent rate capability of 185.08 mA h g−1 at a very high current density of 40 mA cm−2 (23.26 A g−1) and satisfactory cycling stability (82.6% of capacity retention after 1000 cycles). Moreover, all-solid-state BSH devices could be assembled using NiS/SnS2@CC as the battery-type cathode and Fe2O3/rGO@CC as the supercapacitor-type anode. With a maximum working voltage of 1.6 V, such a device exhibited a very high energy density of 104.23 W h kg−1 at a power density of 301 W kg−1 with excellent cycling stability and flexibility. This rational design and preparation strategy may provide new insight into the development of high-performance electrode materials for electrochemical devices.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Jiawei Ji,Zheng Zhou,Chaoze Liu,Song Yan,Shaobo Yang,Rongjuan Zhang,Yanming Xue,Chengchun Tang
The two-dimensionally layered material tin disulfide (SnS2) has a large layer spacing (0.59 nm) that accelerates the diffusion of Li+ and electrons. However, the poor conductivity and huge volume expansion limit its further use. Herein, a covalently tightly assembled SnS2@NRGO hybrid nanostructure with high porosity was successfully synthesized by sacrificing PMMA template support strategies. The high porosity and pore volume of SnS2@NRGO not only increases the permeability of active material and electrolyte and improves the utilization of active material, but also provides buffer space for the huge volume expansion of ultrathin SnS2 during the charging and discharging process. In addition, the strong synergistic effect of the covalent bonding and stable hybridization nanostructure provides an efficient Li+ transport path through the 3D tightly connected NRGO network. N doping introduces a large number of defects and adds more active sites for lithium intercalation. The SnS2@NRGO-3 used as the anodes for LIBs deliver excellent rate performance (540.1 mAh g–1 at a rate of 30 A g–1) and outstanding cycle stability (1031.9 mAh g–1 after 500 cycles at 5 A g–1; the capacity degradation rate of 0.048% per cycle), which attributed to stable hybrid nanostructure and high pore volume. Therefore, the SnS2@NRGO created by us would be a very promising candidate for the future advanced high-rate long-life Li+ storage anode.
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ANALYTICAL BIOCHEMISTRY
·
2023
·
IF 2.9
Bo Yang,Huan Li,Cuijie Nong,Xiaokun Li,Suxiang Feng
In this work, a label-free electrochemical immunosensor using tin sulfide/nickel cobalt metal-organic frameworks (SnS 2 /NiCo MOFs) was established for the sensitive detection of cortisol. First, SnS 2 /NiCo MOFs were synthesized by doping SnS 2 with NiCo MOF nanocubes by a hydrothermal method . Then, gold nanoparticles (AuNPs) were grown in situ on SnS 2 /NiCo MOFs for electrochemical detection . The use of SnS 2 /NiCo MOFs promoted the electron transfer rate of AuNPs and enhanced the electrochemical sensing performance of AuNPs@SnS 2 /NiCo MOFs-modified electrodes. The large specific surface area of AuNPs@SnS 2 /NiCo MOFs provides more active sites for antibody loading. After the prepared immunosensor was incubated with the target analyte, cortisol, the electron transfer impedance increased and the amperometric response decreased, thus establishing a highly sensitive immunosensing method. The sensor had a linear range of 100 fg/mL to 100 ng/mL and a low detection limit of 29 fg/mL. The sensor showed good accuracy and practicability and could be used for the determination of cortisol in saliva.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Qian Li,Fuyuan Yu,Yaru Cui,Juan Wang,Yan Zhao,Jianhong Peng
SnS and SnS 2 are two promising anode materials with excellent theoretical capacity for Sodium ion batteries . However, severe volume collapse and low electric charge conductivity dramatically affect the electrochemical performance of SnS and SnS 2 . As a consequence, SnS-SnS 2 heterostructures are constructed to improve the conductivity of the anode material. The volume effect is prevented by compounding with Graphene Oxide (GO) to ensure cyclic stability and improve the initial coulombic efficiency of anode materials. The first-principles simulation is used to simulate SnS, SnS 2 , SnS-SnS 2 and SnS-SnS 2 @GO respectively, and the comparison is made through actual experiments. Experimental studies indicate that SnS-SnS 2 @GO processes superior conductivity and cycle stability, unique nano-flake structure and the composite modification of GO can restrain the volume effect and ensure long cycle stability of the anode material (450.6 mAh·g −1 after 100 cycles). Moreover, attributing to the p-n heterostructures, the internal charges transfer and improve the electrical conductivity of SnS-SnS 2 can be promoted obviously. Simultaneously, it has been detected that the multilayer SnS-SnS 2 heterostructures combining GO effectively improve the conductivity and ensure good structure stability. Therefore, SnS-SnS 2 @GO composites can be considered as an ideal anode material for sodium ion batteries.
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