Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2023
·
IF 3.6
Yuchuan Ren,Zhanwei Xu,Ying Wang,Fanyu Lu,Yaze Zhao,Kai Yao,Hao Fu,Hao Luo
Applications of sodium ion batteries (SIBs) are inseparable from scalable anode materials with high electrical conductivity and excellent stability. In this work, coal tar pitch activated carbon was functionalized (FAC) and employed as a substrate, followed by a hydrothermal process to fabricate MoS 2 /FAC nanocomposite with tight bonding. The MoS 2 exhibits a homogeneous integrated structure with an enlarged interlayer spacing of 0.65 nm in the obtained MoS 2 /FAC. When employed as anode material for SIBs, the MoS 2 /FAC electrode delivers a promising reversible capacity of 174.0 mAh g −1 at 2 A g −1 , with a decay rate of 0.148%·cycle −1 after 500 cycles. The ultrahigh rate of sodium storage is mainly attributed to uniform MoS 2 nanosheets anchored on the FAC through C-O-Mo bonding, and the wide layer spacing of the ultrathin MoS 2 nanosheets.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Saisai Xia,Yirui Wang,Yi Liu,Chenghao Wu,Minghong Wu,Haijiao Zhang
Rational design of advanced electrode materials is extremely important for high-performance lithium-ion batteries (LIBs). Herein, we report a facile one-pot hydrothermal approach for formation of MoS 2 /nitrogen-doped graphene (MoS 2 /N-graphene) composite with excellent lithium storage properties as anode for LIBs. The controlled experiment results indicate that polyethyleneimine (PEI) functionalizes not only as the nitrogen source for in-situ nitrogen doping, but also as a binder for inducing and regulating the uniform growth of MoS 2 nanosheets onto graphene. As a result, ultrathin MoS 2 nanosheets are vertically grown onto the nitrogen-doped reduced oxide graphene (RGO), generating a distinct honeycomb-like hybrid structure. More significantly, the first principles theoretical calculations results manifest that there is a strong interaction at the interface of MoS 2 and nitrogen-doped graphene, thus boosting the charge transfer. The constructing MoS 2 /N-graphene architecture demonstrates the improved electrochemical performances for reversible lithium storage. It shows a high reversible capacity of 1025.1 mAh/g at a current density of 100 mA/g and the superior rate capability, which is mainly attributed to the pseudocapacitance contributions.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2020
·Vol. 7
·期 13
·2497-2505
·
IF 5.958
Tong Liu,Changji Fang,Bansui Yu,Yu You,Haihong Niu,Ru Zhou,Junjun Zhang,Jun Xu
Two-dimensional layered MoS2 nanosheets are regarded as a promising catalyst for electrocatalytic hydrogen generation but suffer from limitations of catalytically inert basal planes and poor intrinsic conductivity. In this work, we report a simple hydrothermal method to synthesize defect-rich MoS2 nanosheets featuring vanadium (V) doping, widely expanded interlayer spacings, and a high content of metallic 1T-phase towards the efficient hydrogen evolution reaction (HER). The structural characteristics of V(IV)&V(II) co-doping, mixed 1T&2H phases and wide interlayer expansion endow the nanosheets with plentiful disorders and rich defects, thereby resulting in abundant active sites. Furthermore, V(IV)&V(II) co-doping brings in electronic benefits of a narrowed bandgap, improved intrinsic conductivity and optimized hydrogen adsorption free energy of basal planes. By tuning the V dopant content, the 10%V-MoS2 catalyst shows an optimized HER performance with a low overpotential of 146 mV at 10 mA cm−2 and a small Tafel slope of 48 mV dec−1, and a long operational stability of 80 h. Our work opens up new opportunities for improving the electrochemical HER performance of layered transition metal dichalcogenides (TMDs) by synergistic structural and compositional modulations.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Zhijin Xiong,Ganwen Zhang,Yuxiang Ding,Junjie You,Siqing Cheng
The thin-walled hollow MoS 2 microsphere was synthesized by a facile released online NH 3 -blowing during the reduction of ammonium tetrathiomolybdate ((NH 4 ) 2 MoS 4 ) in N-methylpyrrolidone (NMP) solvent by hydrazine hydrate at 80 ℃ and investigated electrochemically as sulfur host for lithium sulfur battery. The results show that the as-prepared MoS 2 @S electrode delivers an initial specific capacity of as high as 1801 mAh g −1 , albeit partly due to the formation of SEI membrane, indicating the modulation of MoS 2 on the electrochemical reaction of sulfur when compared with bare sulfur electrode. Moreover, the as-prepared MoS 2 @S electrode exhibits excellent cycling stability and good rate capability, corroborating the interaction of MoS 2 with lithium polysulfides (LiPSs) due to the severe shuttling effect in lithium sulfur battery, which is further authenticated by cyclic voltammetry, Tafel plot and electrochemical impedance spectroscopy techniques. This is anticipated to be a straightforward strategy for the practical implementation of lithium sulfur battery as an alternative to the state-of -the-art lithium ion battery.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Changjiang Nie,Mingming Yin,Ye Zhao,Chuanwen Zhao,Butian Zhang,Xinxin Song,Xin Yi,Youwei Zhang,Liang Luo,Shun Wang
Two-dimensional layered MoS2 has attracted tremendous attention because of its unique physical and chemical properties and promising application prospects. To further expand its applications to areas such as gas sensing, biosensing, drug delivery, and photothermal therapy, surface functionalization has been employed to engineer its properties according to multiple perspectives. Herein, we demonstrate a scalable surface modification method to generate functionalized MoS2 flakes by the step-by-step covalent assembly of lipoic acid (LA) and fluorescein isothiocyanate (FITC) molecules. In our approach, reactive disulfide-containing LA molecules were first chemically bonded to the sulfur vacancies (SVs) of MoS2 surfaces. FITC was then linked to MoS2 through LA by a condensation reaction between the amino group of FITC and the carboxyl group of LA. It was demonstrated that the initial LA functionalization enhanced the electronic mobility via the filling of SVs, and the second-step functionalization with FITC induced electron doping of MoS2. Moreover, the covalent attachment of FITC decorated the PL spectrum of MoS2 with an additional green fluorescence at ∼530 nm. This strategy is a universal route to construct a versatile platform for chemical modification of functional groups and provides new opportunities of controlling the electronic and optical properties of transition-metal dichalcogenides.
研究领域:
材料科学
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化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 33
·11640-11649
·
IF 4.39
Zijian Liao,Mingliang Ma,Zhouyu Tong,Yuxin Bi,Kwok L. Chung,Mingtao Qiao,Yong Ma,Aijie Ma,Guanglei Wu,Xiang Zhong,Ranran Sun
New types of electromagnetic (EM) wave absorption materials with a light weight, strong absorption ability and wide absorption frequency have been widely explored. Nevertheless, it is still an intractable challenge to design the structure of the materials and rationalize multiple components. In this work, one-dimensional (1D) CoFe2/C@MoS2 composites were prepared via electrospinning technology, high-temperature carbonization and hydrothermal method. SEM and TEM images reveal that the as-prepared CoFe2/C fibers with a 1D structure are well coated with MoS2. The excellent absorption performance of the composites is mainly attributed to the 1D structure and the ideal impedance matching. CoFe2/C@MoS2 composites show strong absorption ability with an optimal reflection loss (RL) of −66.8 dB (13.28 GHz) at a matching thickness of 2.12 mm. Meanwhile, the composite possesses an effective absorption frequency range between 10.70 and 16.02 GHz with a bandwidth of 5.32 GHz. These results indicate that CoFe2/C@MoS2 composites will become promising lightweight and highly efficient MA materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Jiahao Li,Ren Liu,Xiangfeng Chu,Shiming Liang
Despite the recognized potential of two-dimensional transition metal dichalcogenides (2D TMDs) as effective sensitizers for metal oxides, comparative insights into their specific sensitization effects on spinel ferrites remain lacking. Herein, MoS 2 -CdFe 2 O 4 and WS 2 -CdFe 2 O 4 composites were synthesized via an in-situ solvothermal-calcination strategy. Characterization results confirmed that the incorporation of TMDs effectively modulated the microstructure and surface properties of CdFe 2 O 4 . Specifically, the WS 2 -CdFe 2 O 4 (WDF-10) had a larger specific surface area (10.14 m 2 /g) and pore volume than the MoS 2 -CdFe 2 O 4 (MDF-10), exposing more active sites. XPS suggests an increased fraction of defect-related/adsorbed oxygen species in the composites. Gas-sensing tests revealed performance differences: the WDF-10 sensor exhibited a remarkable response to 100 ppm formaldehyde at 140°C, approximately 2.5 times higher than the MDF-10. Meanwhile, the MDF-10 sensor demonstrated reduced response/recovery times, enhanced quantitative precision, and remarkable long-term stability. The sensitization mechanism is attributed to the synergistic effect of increased specific surface area and the proposed formation of p-n heterojunctions. Energy band analysis suggests that WS 2 , with its unique band alignment, may induce a stronger depletion layer modulation on CdFe 2 O 4 , thereby enhancing the response. This work demonstrates that surface sensitization with MoS 2 or WS 2 is an effective strategy to enhance the gas-sensing performance of spinel ferrites.
✓ 已验证
产品关联
DOI
高影响因子
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2026
·
IF 7
Yikai Wang,Wenjing Zhang,Chun Hu,Yang Yang,Jinghao Chen,Zhongxiang Li,Dezhi Zheng
A novel humidity sensor based on graphene foam combined with MoS2 was prepared in this paper. MoS2/graphene foam (MGF) composite materials were synthesized by the atmospheric pressure CVD method, then transferred onto a glass substrate, and had electrodes prepared to complete sensor fabrication. Due to the high surface - to - volume ratio and network structure of sensing materials, humidity sensors exhibit shorter response and recovery times by allowing water molecules to be absorbed and released more quickly. Besides, this type of sensor also shows relatively linear sensitivity (0.04%/%RH between 10% and 90% RH) and good repeatability (the maximum offset within 0.41% at 60% RH), so that it can be used for respiratory monitoring. This provides a unique method for respiratory monitoring that can be applied in medical monitoring, with great potential for use. Moreover, to further enhance the dynamic performance of humidity sensors, a dynamic compensation method combined with system identification and particle swarm optimization (PSO) is proposed. By employing this approach, the identified dynamic mathematical model agrees well with the actual measurement results (95.67% in absorption and 91.09% in desorption). In the process of moisture absorption, the sensor component's operational bandwidth is enhanced from 0.06 Hz to 1.91 Hz, and the response time is shortened from 2.06s to 0.29s. During desorption, the sensor component's operational bandwidth is enhanced from 0.02 Hz to 1.75 Hz, and the recovery time is shortened from 3.74s to 0.48s. This dynamic compensation method offers a practical approach to enhance these sensors' performance.
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2021
·Vol. 11
·期 5
·547
·
IF 2.881
Minyu Bai,Shuai Wen,Jijie Zhao,Yuxuan Du,Fei Xie,Huan Liu
The carrier gas flow field plays a vital role in the chemical vapor deposition (CVD) process of two dimensional (2D) MoS2crystal, which was studied by simulations and experiments. Different carrier gas flow fields were studied by utilizing three types of precursor carrier which affected the local gas flow field significantly. The experiment results showed that the appropriate precursor vapor concentration could be achieved by local carrier gas flow field conditioning, resulting in single 2D MoS2crystals of a large size and a high coating rate of 2D MoS2crystal on the target substrate surface. The carrier gas flow also contributed to the growth of the 2D MoS2crystal when it flew towards the target surface. The size of deposited single 2D MoS2crystal reached tens of micrometers and a few layers of 2D MoS2crystal were characterized and confirmed.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
高影响因子
CARBON
·
2020
·
IF 8.821
Zhicheng Liu,Fei Pan,Baiwen Deng,Zhen Xiang,Wei Lu
In this work, the 3D worm-like expanded graphite (EG)/2D MoS 2 nanosheets hybrids were synthesized by a facile in-situ self-assembled hydrothermal process. The 2D MoS 2 nanosheets were uniformly and vertically grown on the surface of the 3D worm-like graphite, and interconnected with each other to form a hierarchical network structure. The unique honeycomb-like porous microstructure of the worm-like EG was conducive to the multiple scatterings and reflections, interconnected conductive network and improved impedance matching. In addition, the abundant heterogeneous interfaces in the MoS 2 /EG hybrids lead to enhanced dipole polarization and interfacial polarization . As a result, the MoS 2 /EG hybrids exhibited high-efficiency electromagnetic wave (EMW) absorption performance with an ultra-low filling ratio of 7 wt %. The MoS 2 /EG composites displayed an optimal reflection loss ( RL ) value of −52.3 dB at 15.1 GHz and a wide effective absorption bandwidth (EAB) of 4.1 GHz with a thickness of only 1.6 mm. The present work provides a significant guidance for the design and fabrication of the ultra-lightweight EMW absorbers with high performances.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2019
·Vol. 323
·期 1
·641-649
·
IF 1.186
Kou Ying,Zhang Ling,Liu Bo,Zhu Lin,Duan Tao
Abstract In this work, a composite of phosphonate-functionalized MoS 2 supported on carbon cloth, MoS 2 -IP6 NRA/CC, was prepared by the hydrothermal method to effectively remove U(VI). Results showed that the saturated adsorption capacity of MoS 2 -IP6 NRA/CC for uranium was 183.3 mg g −1 . The adsorption process was in good agreement with Langmuir model and pseudo-second-order kinetics model. Besides, MoS 2 -IP6 NRA/CC showed good adsorption on uranyl ions under acidic conditions, and the material was recyclable, indicating that the material can be used as a potential radioactive nuclear processing material. Graphic abstract
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2019
·Vol. 48
·期 8
·4947-4958
·
IF 1.676
Yang Yong,Pu Hongbin,Li Lianbi,Di Junjie,Lin Tao,Hu Jichao,Zang Yuan,Zhang Shan
Chemical vapor deposition is one of the universally acknowledged methods to synthesize two-dimensional transition-metal dichalcogenides with high crystal quality and large size. However, variations in the process parameters directly influence the number of layers and the quality of molybdenum disulfide (MoS 2 ) films. Thus, achieving controllable growth of monolayer MoS 2 films is still a challenge. In this study, the immunity of the monolayer nature of MoS 2 domains to process parameters was systematically investigated by varying the vaporization/growth temperature, time of sulfur addition, ramp rate, and distance between the precursors and receiving substrate using a quasiclosed crucible in a modified atmospheric-pressure CVD system. The results indicated that incorporating a quasiclosed crucible could facilitate controllable growth of monolayer MoS 2 films where the monolayer nature is immune to process parameters. Further, we attempted to elucidate the growth mechanism of monolayer MoS 2 films, which will contribute toward precise control over the synthesis of MoS 2 and other transition-metal dichalcogenides within a broad processing window.
研究领域:
材料科学
·
纳米技术
·
凝聚态物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）