Polymers
·
2024
·Vol. 16
·期 7
·921
·
IF 4.7
Sheng Wu,Qian Liu,Wei Zhang,Ruizhe Wu,Hongping Tang,Yulin Ma,Wenqiang Xu,Shufang Jiang
As a promising candidate for high-energy-density rechargeable lithium metal batteries, Li/FeS2batteries still suffer from the large volume change and severe shuttle effect of lithium polysulfides during cycling. To improve the electrochemical performance, great efforts have been made to modify FeS2cathodes by constructing various nanocomposites. However, energy density is sacrificed, and these materials are not applicable at a large scale. Herein, we report that the electrochemical performance of commercial FeS2can be greatly enhanced with the application of a double-layer MoS2-CNTs-PVA (MCP)/PVA separator fabricated by electrospinning. The assembled Li/FeS2batteries can still deliver a high discharge capacity of 400 mAh/g after 200 cycles at a current density of 0.5 C. The improved cycling stability can be attributed to the strong affinity towards lithium polysulfides (LiPSs) of the hydroxyl-rich PVA matrix and the unique double-layer structure, in which the bottom layer acts as an electrical insulation layer and the top layer coupled with MoS2/CNTs provides catalytic sites for LiPS conversion.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Wei Zhiqiang,Zhou Meipan,Zhang Huining,Bai Jinglong,Ding Meijie,Li Zhiming,Yu Qingsong
In this study, transition metal sulfide composites were synthesized through a cost-effective and simple hydrothermal method, intended for use as electrode materials in supercapacitors. Studies have shown that the material has excellent electrochemical properties. During the preparation of MoS 2 /carbon nanotubes (CNTs), when 1 mmol of cobalt nitrate replaces sodium molybdate, the composite material achieves a specific capacitance of 1560 A g −1 at a current density of 1 A g −1 and 1335 A g −1 at 10 A g −1 , demonstrating excellent rate performance. After 5000 charge/discharge cycles at a current density of 10 A g −1 , the material maintains a capacity retention of 83.1%, with a coulombic efficiency close to 100%. When assembled into a hybrid capacitor, the specific capacitance still reaches 128.9 F g −1 at a current density of 1 A g −1 , still has 54% capacity retention at a current density of 10 A g −1 , and provides an energy density of 45.83 W h kg −1 at a power density of 800.92 W kg −1 , demonstrating its potential application value in high-efficiency energy storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Guang-Lan Li,Ying-Ying Miao,Xiang-Yue Qiao,Tian-Yu Wang,Fei Deng
Boosting the hydrogen and oxygen evolution reaction (HER/OER) on MoS 2 -based catalysts is a challenging scientific issue due to the activity of MoS 2 is significantly rely on the edge site which is limited in regular structure. Herein, a highly dispersed edge site-rich NiS 2 /MoS 2 /CNTs heterojunction catalyst is successfully developed via facile etching the nanoflower-like NiS 2 /MoS 2 spheres on carbon nanotubes (CNTs). Through expanding the lattice spacing of 2H-MoS 2 , generating abundant Mo-S edge sites ( i.e . generating a large number of unsaturated S atoms) together with enhancing the dispersity of NiS 2 /MoS 2 nanosheets, the etching posttreatment significantly regulates the electronic and geometric structure of NiS 2 /MoS 2 /CNTs. Further combining the extremely intimate electronic interaction between MoS 2 /NiS 2 heterogeneous interfaces, the optimal NiS 2 /MoS 2 /CNTs presents a preeminent alkali water splitting performance with overpotentials of 149 for HER and 315 mV for OER at 10 mA cm −2 , which are 29 and 35 mV lower than the catalyst before etch treatment (NiS 2 /MoS 2 /CNTs-p), respectively. Moreover, the electrolyzer assembled with NiS 2 /MoS 2 /CNTs drives a voltage of 1.73 V at 10 mA cm −2 and a continuous stable operation of 50 h toward overall water splitting.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Panpan Liu,Yang Li,Zhaodi Tang,Junjun Lv,Piao Cheng,Xuemei Diao,Yu Jiang,Xiao Chen,Ge Wang
Developing advanced nanocomposite integrating solar-driven thermal energy storage and thermal management functional microwave absorption can facilitate the cutting-edge application of phase change materials (PCMs). To conquer this goal, herein, two-dimensional MoS 2 nanosheets are grown in situ on the surface of one-dimensional CNTs to prepare core-sheath MoS 2 @CNTs for the encapsulation of paraffin wax (PW). Benefiting from the synergistic enhancement photothermal effect of MoS 2 and CNTs, MoS 2 @CNTs is capable of efficiently trapping photons and quickly transporting phonons, thus yielding a high solar-thermal energy conversion and storage efficiency of 94.97%. Meanwhile, PW/MoS 2 @CNTs composite PCMs exhibit a high phase change enthalpy of 101.60 J/g and excellent long-term thermal storage durability after undergoing multiple heating–cooling cycles. More attractively, PW/MoS 2 @CNTs composite PCMs realize thermal management functional microwave absorption in heat-related electronic application scenarios, which is superior to the single microwave absorption of traditional materials. The minimum reflection loss (RL) for PW/MoS 2 @CNTs is −28 dB at 12.91 GHz with a 2.0 mm thickness. This functional integration design provides some insightful references on developing advanced microwave absorbing composite PCMs, holding great potential towards high-efficiency solar energy utilization and thermally managed microwave absorption fields.
研究领域:
材料科学
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纳米技术
·
能量存储
·
热管理
·
微波吸收
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Mian Gao,Zhitao Shen,Gentian Yue,Chen Dong,Jihuai Wu,Yueyue Gao,Furui Tan
Developing a synthesis method for large-scale preparation of efficient and economical non noble metal counter electrode (CE) electrocatalytic materials with good catalytic ability and stability is an ideal choice for the commercialization of dye-sensitized solar cells (DSSCs). In this paper, a novel micro-nanostructured composite of CE was prepared by fixing the In 4 SnS 8 and MoS 2 on carbon nanotubes (CNTs) and using a one-step hydrothermal strategy. The devices based on the In 4 SnS 8 @MoS 2 @CNTs composite CE performs high power conversion efficiency of 8.72%, far more than that of the device with the control ones (7.57%). The In 4 SnS 8 @MoS 2 composite were homogeneously distributed on the CNTs surface to form a new In 4 SnS 8 @MoS 2 @CNTs composite network heterojunction . This distinctive porous structure can provide greater contact area and electronic transmission channel to ensure fast charge transport of electrolyte. The prefect electrochemical properties of the In 4 SnS 8 @MoS 2 @CNTs CE for the I − /I 3 − electrolyte also have been demonstrated by a series of electrochemical tests. As a result, it can be considered that the In 4 SnS 8 @MoS 2 @CNTs will replace the Pt CE and has broad application prospects in DSSCs.
研究领域:
材料科学
·
能源科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Wei Guo,Xiaofeng Li,Taihua Zhang,Yan An
Flexible freestanding PANI/MoS 2 /CNTs (PMC) composite films were fabricated using a simple drop-casting method. The introduction of metallic 1T-MoS 2 nanosheets significantly increased the Seebeck coefficient ( S ) of the polyaniline (PANI) matrix through its intrinsic high S and the interfacial energy-filtering effect. The incorporation of highly conductive carbon nanotubes (CNTs) constructed an efficient percolated network, which dramatically enhanced carrier mobility and electrical conductivity ( σ ). The optimized PMC2.5 film achieved a peak power factor ( PF ) of 45.12 μW m −1 K −2 at 378 K and a low thermal conductivity ( κ ) of 0.226 W m −1 K −1 at 298 K, leading to a thermoelectric figure of merit ( ZT ) of 0.036. The film exhibited excellent flexibility, retaining over 91% of its initial σ and 98% of its S after 1000 bending cycles. A flexible thermoelectric generator assembled from these films generated stable voltage output under a small temperature gradient, demonstrating the potential of this ternary composite system for wearable energy harvesting applications.
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Chenzhi Ding,Yao Ding,Kao Wang,Zhaobo Zheng,Fang Liu,Xuyun Guo,Mohsen Tamtaji,Zhengtang Luo
Heterojunction engineering, serving as a key framework for building blocks between diverse functional materials, has emerged as a highly promising strategy to address the demand for efficient catalysts in lithium–sulfur (Li–S) batteries. However, achieving full matrix electronic control in the bulk phase is a bottleneck in regulating the electrochemical catalytic behavior of heterostructure catalysts. Herein, we report a “tube-in-tube” multifunctional catalyst that can strengthen the sulfur redox reaction (SRR) in Li–S batteries. Benefiting from a large-scale and oriented two-dimensional (2D) superlattice interface, the tailored heterostructure catalysts (MoSe2/MoS2@CNTs) show a “1 + 1 > 2” synergistic effect in lithium polysulfide (LiPSs) adsorption and catalytic conversion during SRR. In situ studies and theoretical results reveal that this 2D Moiré superlattice interface not only optimizes the adsorption of polysulfides but also moderates the overall electronic density of catalysts. Consequently, Li–S batteries assembled with MoSe2/MoS2@CNTs-PP as a modified separator deliver an outstanding discharge capacity of 1225 mAh g–1 at 0.2 C with a Ketjenblack/S cathode while maintaining a specific capacity of 870 mAh g–1 even at 5 C. Additionally, due to the inhibited “shuttle effect” by heterostructure catalysts, the modified separators exhibit a less capacity fading of 0.063% per cycle after 1000 cycles (1 C) even with a high sulfur loading (3.8 mg cm–2). This work focuses on designing an adsorption–catalysis synergistic interface within a full matrix of catalysts for Li–S chemistry and providing insights into the design of multifunctional catalysts for energy-storage systems based on the catalytic reaction, e.g., Zn–I2 and metal–air batteries, etc.
研究领域:
储能
·
材料科学
·
电化学
·
纳米技术
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 17
·8203-8214
·
IF 3.925
Lingli Zhang,Han Tao,Chun Ji,Qiaoling Wu,Xiao Wang,Yuangeng Wu
As an alternative to bisphenol A (BPA), bisphenol S (BPS) is widely used in many consumer goods and industrial products. However, BPS has similar genotoxic, reproductive and endocrine disrupting effects to BPA and can enter the body through the food chain or by dermal absorption to endanger human health. This paper presents a rapid and direct electrochemical sensing technique for ultra-trace BPS determination on the basis of the signal amplification of the 1T phase & 2H phase hybrid MoS2 nanosheets (1T&2H-MoS2) and amino-functionalized carbon nanotube (CNTs-NH2) composites. The cooperative electrocatalytic effect and high-electrically active surface area of 1T&2H-MoS2/CNTs-NH2 composites not only facilitated the electron transfer between BPS and the electrode, but also promoted the adsorption of BPS on the electrode. Hence, the 1T&2H-MoS2/CNTs-NH2 modified electrode exhibited excellent electrocatalytic activity with a lower oxidation potential and higher peak current for BPS. Under the optimized conditions, the peak current response of BPS showed a good dose-dependent relationship with its concentration in the range of 0.02–1.0 μM and 1.0–70.0 μM, while the detection limit was as low as 8.6 nM. The proposed method was used to determine BPS in the mineral water bottle and orange juice samples with satisfactory spiked recoveries between 92.31% and 104.20%, demonstrating its reliability and practicality in real sample analysis. Furthermore, the sensing method has the characteristics of facile electrode fabrication, fast response (<4 min) and good reproducibility.
研究领域:
环境科学
·
分析化学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
Bingjie Ma,Jing Luo,Jiao Peng,Zhenyu Wu,Ting Xing,Hong Liu,Chun Wu,Zhigao Luo,Xianyou Wang
SiO x is proposed as one of the most promising high-performance anodes for its favorable capacity and stable lithium insertion/extraction electric potential, however its effective commercial application still faces giant challenge. To overcome poor electrical conductivity and huge volume effect of silicon oxide-based material, we adopt a valid strategy to synthesis the SiO x nanosphere double-wrapped by MoS 2 and multi-walled carbon nanotubes (CNTs) as anode material. The influences of MoS 2 and CNTs on the structure, morphology and electrochemical performances of nanohybrid are probed detailly by transmission electron microscopy , X-ray photoelectron spectroscopy and charge-discharge measurements. The results show that as-prepared nanohybrids release a steady reversible capacity of 798 mAh g −1 with high capacity retention of 81.4% at 500 mA g −1 after 300 cycles. The outstanding electrochemical properties can be ascribed to the facts that the hollow mesoporous structure affords ample buffer space and the introduction of MoS 2 with a two-dimensional layered structure can provide more exposed active-sites for lithium adsorption, as well as the CNTs wrapping can form a favorable conductivity matrix, endowing the nanocomposites with great structural stability. Accordingly, this new structure design by means of a heterogeneous dual-wrapped architecture develops a significant strategy for the development of high-performance SiO x -based anode materials.
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
CARBON
·
2025
·
IF 11.6
Haotian Jiang,Yanxiang Wang,Chengjuan Wang,Yingfan Li,Shichao Dai,Bohan Ding,Jinghe Guo,Yanru Yuan,Dongming Liu,Hui Li
To develop multi-functional microwave-absorbing materials, the FeCoNi/MoS 2 @carbon nanotubes (CNTs)/carbon nanofibers (CNFs) aerogels were synthesized by anchoring FeCoNi and MoS 2 onto an aerogel skeleton via directional freeze-drying and catalytic chemical vapor deposition (CCVD). Through CCVD, a diverse array of heterointerfaces was successfully constructed and defect-containing CNTs were introduced, thereby improving the impedance mismatch of carbon-based aerogels while achieving outstanding microwave absorption performance. The composite aerogel results in a minimum reflection loss of −84.18 dB at the thickness of 1.85 mm and an effective absorption bandwidth of 5.40 GHz at the thickness of 1.75 mm with a 13 % filler ratio. The excellent electromagnetic wave absorbing ability is mainly ascribed to the formation of three-dimensional conduction network, abundant heterogeneous interfaces, and the introduction of magnetic loss. Density functional theory calculations further elucidate that the enhanced dielectric properties arise from asymmetric charge distribution at heterogeneous interfaces (FeCoNi–C and MoS 2 –C), which amplifies interfacial polarization, while the increased density of states optimizes conduction loss. Additionally, the composite aerogels exhibit exceptional thermal insulation and infrared stealth performance. This work pioneers a novel pathway method for multifunctional aerogels using CCVD.
研究领域:
材料科学
·
纳米复合材料
·
功能材料
·
电磁学
·
热物理学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-14
·
IF 5.3
Wang Yilin,Zhao Zixia,Wang Yuefan,Liu Zhifang,Chen Leyao,Qi Jin,Xie Yixi,Zhao Pengcheng,Fei Junjie
GO/Co-MOF/PPy-350 (GPC-350) was synthesized by in situ growth of ultrafine Co-MOF on graphene oxide (GO), followed by encapsulation with polypyrrole (PPy) and calcination at 350.0℃. Meanwhile, MoS 2 -MWCNTs (MoS 2 -CNTs) were produced via the in situ synthesis of MoS 2 within multi-walled carbon nanotubes (MWCNTs). The electrochemically superior GPC-350/MoS 2 -CNTs nanocomposite was then achieved by combining GPC-350 with MoS 2 -CNTs. The polypyrrole encapsulation serves to protect the ultrafine Co-MOF, preventing its degradation during the calcination process. The linear detection range of the GPC-350/MoS 2 -CNTs/GCE sensor for the determination of catechin (CA) in phosphate buffered saline (PBS) was from 5.0 to 1800.0 nM with a limit of detection of 1.78 nM. In addition, the materials were characterized using SEM, EDX, TEM, XRD, EIS, XPS, FTIR, and Raman. These results indicate that the synthesis of GPC-350/MoS 2 -CNTs nanocomposites is successful and CA in beverages samples can be effectively detected using electrochemical sensors. Additionally, the reaction mechanism of CA was explored through cyclic voltammetry. The application of GPC-350/MoS 2 -CNTs nanocomposites in sensor technology offers innovative approaches for the ultrasensitive detection of flavonoids. Graphical abstract
研究领域:
材料科学
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）