Advanced Materials Interfaces
·
2020
·Vol. 7
·期 6
·1901947
·
IF 4.948
Weiwei Xu,Wei Tian,Linxing Meng,Fengren Cao,Liang Li
Due to its suitable band energy level and small band gap, CdIn 2 S 4 is a promising photoanode for photoelectrochemical (PEC) water splitting. Nevertheless, the serious charge recombination at the back contact and photoelectrode/electrolyte interface severely hinders its PEC activity. Herein, a facile magnetron ion-sputtering strategy is adopted to fabricate TiO 2 underlayer and NiO overlayer to modify both sides of CdIn 2 S 4 photoanode. The TiO 2 underlayer serves as an electron transport layer to promote electrons transfer from CdIn 2 S 4 to fluorine-doped tin oxide substrate and hinder holes' transportation, thus suppressing the charge recombination at the back contact. NiO, as a p-type semiconductor, forms a p-n heterojunction with CdIn 2 S 4 , inducing a built-in electric field to facilitate charge transport. Meanwhile, NiO overlayer acts as a co-catalyst to enhance surface reaction kinetics, and thereby improves the carrier injection efficiency at photoelectrode/electrolyte interface. As a result, the optimum TiO 2 /CdIn 2 S 4 /NiO photoanode exhibits photocurrent as high as 0.6 mA cm −2 at 1.23 V versus reversible hydrogen electrode, which is about 2.3 times that of bare CdIn 2 S 4 . This work provides an effective strategy to manipulate the charge carrier dynamics to improve the PEC activity of photoanode.
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
·
2022
·
IF 11.307
Shuanglin Wu,Xiaolin Nie,Zhihui Wang,Zhifeng Yu,Fenglin Huang
Enhancing the adsorption and catalytic conversion of polysulfides is critical in improving the cycling stability of lithium–sulfur (Li–S) batteries. Herein, an ultralight typha-like carbon nanofiber (CNF) based interlayer (MoS 2 /Al 2 O 3 @CNF) is constructed by scalable electrospinning and eco-friendly magnetron sputtering, to act as a “police constable” between the cathode and separator. The co-sputtering of MoS 2 and Al 2 O 3 endows the interlayer with both chemical adsorption and catalytic conversion active sites. Besides, the typha-like nanofibrous interlayer serves as both membrane and brush filters, leading to more efficient polysulfide blocking. The structural superiority of this interlayer compared to the CNF membrane results in a 693.8% higher specific surface area of 254 m 2 g −1 . In addition to these benefits, the unique structure allows for a 6.9-fold increase in exposure of active sites. The cell with such an interlayer delivers stable long-term cycling performance with an ultralow capacity decay rate of 0.035% per cycle over 1000 cycles at 0.5C. The long-term cycling performance can be attribute to the structural stability of the typha-like nanofibrous membrane, as evidenced by the postmortem SEM images. This work provides a valuable strategy for designing functional interlayers toward the long-term cycling stable Li–S batteries.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Zhiyan Si,Cederick Cyril Amoo,Yu Han,Jian Wei,Jiafeng Yu,Qingjie Ge,Jian Sun
Catalytic conversion of CO 2 to high-value products is a crucial method to achieve targets of carbon dioxide emissions peak and carbon neutralization. However, realizing a controllable product distribution in a single CO 2 hydrogenation process is of great challenge. Herein, we prepared the CuFe nanoalloy catalyst that directly transforms CO 2 to alkanes using physical sputtering method in mild condition. The characteristic results show that the proximity between Cu and Fe is the crucial factor to tunable products among the different catalysts. The formation of unique coordination of FeCu 4 nanoalloys from high-energy sputtering process provides close interaction between Cu and Fe, which is favorable to formation of low carbon paraffin, however, a distant proximity and weak interaction will increase the selectivity of olefins and alcohols. This work provides a general strategy for tuning target chemicals and enriches the viewpoints in CO 2 hydrogenation.
研究领域:
催化化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2023
·Vol. 42
·期 11
·3741-3754
·
IF 8.8
Jiang Zhao-Yi,Pan Ming,Ren Fu-Meng,Chen Rui,Sun Zhen-Xing,Yang Zhi-Chun,Liu Zong-Hao,Chen Wei
Perovskite solar cells (PSCs) have attracted widespread attention because of their remarkable efficiency, low cost, and ease of fabrication. However, the operational stability of the PSCs still suffers from the corrosion of metal electrodes induced by metal-halide reactions. Herein, we propose a feasible strategy for improving the stability of inverted PSCs by using magnetron-sputtered Mo rear electrodes. Coupled with a bismuth (Bi) buffer layer prepared by thermal evaporation, the damage from the magnetron sputtering process toward the underlayers can be effectively relieved. Consequently, based on the Bi + Mo bilayer electrode, the inverted PSCs with a NiMgLiO hole transport layer exhibited a power conversion efficiency (PCE) of 18.82%. In addition to their excellent stability at high temperatures, compact Mo films can inhibit the decomposition of Perovskite (Pvk) films in the devices. The PSCs with the Bi/Mo bilayer electrode maintained 97.9% of its initial efficiency, showing better stability than PSCs with the traditional Ag electrode after aging for 3000 h under continuous light illumination. Graphic abstract
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 2
·264
·
IF 2.7
Zhenying Chen,Xiuqing Cao,Yuyang Huang,Shuang Zhang,Wenjian Pan,Wen Deng
Ti-doped ZnO (TZO) and Bi2O3thin films were designed and deposited by magnetron sputtering successively on ITO glass substrate to form a Ti-doped ZnO/Bi2O3(TZO/Bi2O3) heterojunction. Microstructure and photoelectric properties of TZO, Bi2O3, and TZO/Bi2O3films were tested and characterized. The results showed that TZO film with a hexagonal wurtzite structure was preferentially grown along the crystal plane (002), had a good crystallization state, and was an N-type semiconductor film with high transmittance (90%) and low resistivity (4.68 × 10−3Ω·cm). However, the Bi2O3film sputtered in an oxygen-containing atmosphere and was a polycrystalline film that was preferentially grown along the crystal plane (111). It had a lower crystallization quality than TZO film and was a P-type semiconductor film with low transmittance (68%) and high resistance (1.71 × 102Ω·cm). The I–V curve of TZO/Bi2O3composite films showed that it had an obvious heterojunction rectification effect, which indicates that the PN heterojunction successfully formed in TZO/Bi2O3films.Keywords:TZO film;Bi2O3film;TZO/Bi2O3heterojunction;magnetron sputtering;optoelectronic properties
研究领域:
材料科学
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Guanhua Cheng,Jiameng Sun,Yunfei Ran,Fuquan Tan,Wensheng Ma,Zhonghua Zhang
Highly effective free-standing electrocatalysts are demanded to reduce biomass-oriented aldehydes to alcohols. Magnetron sputtering is efficient to produce film-based catalysts, but depositing transition metals on carbon fiber paper (CFP) faces the challenge of weak adhesion. Here we introduced a strategy with sputtered Ti as a sublayer to enhance the adhesion between Ni and CFP, and systematically studied the changes in morphology and catalytic performances. Different from the dense structure of Ni directly sputtered on CFP, the Ni on Ti sublayer demonstrates a column-channel architecture, and shows fast electron/ion transfer and stable structure during the reaction. Moreover, the microstructure of Ni film was further modified by regulating the working pressure during sputtering. The enhanced electrocatalytic performance with Ti sublayer is ascribed to the higher adhesion strength, the faster electron/ion transfer and the enriched local concentration of hydronium ions, which are confirmed by electrochemical impedance spectroscopy and in-situ surface-enhanced infrared absorption spectroscopy.
研究领域:
材料科学
·
催化化学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Junpeng Zhong,Mingchao Han,Changming Li,Ronggui Li,Hongwei He
Electroluminescent (EL) filament has received much more attention on the application of smart and displayable textiles. In this work, the co-axial wet-spinning method was utilized to prepare a core/sheath filament with a copper wire as core electrode and thermal polyurethane (TPU) contained EL material of ZnS:Cu as sheath. The outside was wire-winded helically and then was coated with silver coating via magnetron sputtering , which was used as the other electrode. About 10 nm thickness silver coating was afforded after 90 s sputtering, which ensured Ag coating continuity. Finally, the filament was immersed into a waterborne polyurethane (WPU) emulsion to endow a transparent protective layer. When the ratio of Zn:S/TPU was 1:1, the as-obtained EL filament exhibited the highest luminescent efficiency. This strategy made almost all EL materials excited, which provided a promising and facilely scalable method to fabricate EL filament with high utilization rate of EL materials and luminescent efficiency.
研究领域:
材料科学
·
纺织工程
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 22
·1-13
·
IF 2.8
Zhang Shangtao,Wang Jian,Wu Rong,Pan Boting,Liu Lang,Liu Chunhai
Transition metal nitrides are potential electrode materials for supercapacitors because of their high specific capacitance, excellent conductivity, high melting point, and chemical stability. Herein, we fabricated zirconium nitride (ZrN) thin films using reactive direct-current (DC) magnetron sputtering at various sputtering power and further investigated their morphologies and electrochemical capacitive performance as an electrode material for supercapacitors. All films, consisting of ZrN and Zr 3 N 4 , are continuous and homogeneous with a fine columnar structure. As the sputtering power increases, the grain size becomes smaller and the content of Zr atoms increases. Electrochemical capacitance performance tests show that the T3 film electrode achieves the highest areal specific capacitance of 1.19 mF cm −2 at a current density of 0.05 mA cm −2 due to higher porosity, better wettability, and lower charge transfer resistance. Cycling tests show that the T3 film achieves an areal specific capacitance of 117% of its initial value and then remains stable, demonstrating the best cycling 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
Materials
·
2023
·Vol. 17
·期 1
·157
·
IF 3.4
Dongyang Qiao,Feng Shi,Ye Tian,Wanli Zhang,Lingbo Xie,Shuangpeng Guo,Ci Song,Guipeng Tie
Single-crystal silicon carbide has excellent electrical, mechanical, and chemical properties. However, due to its high hardness material properties, achieving high-precision manufacturing of single-crystal silicon carbide with an ultra-smooth surface is difficult. In this work, quantum dots were introduced as a sacrificial layer in polishing for pulsed-ion-beam sputtering of single-crystal SiC. The surface of single-crystal silicon carbide with a quantum-dot sacrificial layer was sputtered using a pulsed-ion beam and compared with the surface of single-crystal silicon carbide sputtered directly. The surface roughness evolution of single-crystal silicon carbide etched using a pulsed ion beam was studied, and the mechanism of sacrificial layer sputtering was analyzed theoretically. The results show that direct sputtering of single-crystal silicon carbide will deteriorate the surface quality. On the contrary, the surface roughness of single-crystal silicon carbide with a quantum-dot sacrificial layer added using pulsed-ion-beam sputtering was effectively suppressed, the surface shape accuracy of the Ø120 mm sample was converged to 7.63 nm RMS, and the roughness was reduced to 0.21 nm RMS. Therefore, the single-crystal silicon carbide with the quantum-dot sacrificial layer added via pulsed-ion-beam sputtering can effectively reduce the micro-morphology roughness phenomenon caused by ion-beam sputtering, and it is expected to realize the manufacture of a high-precision ultra-smooth surface of single-crystal silicon carbide.
研究领域:
材料科学
·
纳米技术
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Jinmei Lei,Yuxia Gao,Xin Zhao,Yanqiu Zhu,Chenhui Zhang,Yue Ma,Kefei Zhao,Fengpei Du
A new series of ionic liquid-type imidazolium Gemini surfactants, 1,10-(Propane-1,3-diyl-2-ol)bis(3-alkyl-1H-imidazol-3-ium) chloride, were synthesized and investigated for their dilational rheology at the air/water interface using the oscillating drop method. The surface properties and splashing behavior of these ionic liquid-type imidazolium Gemini surfactants were studied at different hydrophobic chain lengths, surfactant concentrations and dilational frequencies. With increasing concentration, increasing intermolecular interaction had a positive effect on the dilational modulus, and the increasing surfactant molecular diffusion exchange had a negative effect on the dilational modulus; thus, the surface dilational modulus demonstrated a maximum value. Furthermore, the surface dilational modulus for 1,10-(Propane-1,3-diyl-2-ol) bis (3-tetradecyl-1H-imidazol-3-ium) chloride is higher than that for the other two short-chain ionic liquid-type imidazolium Gemini surfactants, which is due to an increase in the hydrophobic interaction. The results reveal that the bouncing heights of ionic liquid-type imidazolium Gemini surfactants on a paraffin liquid surface decrease with increasing alkyl chain length. The splashing behavior of ionic liquid-type imidazolium Gemini surfactants observed on liquid surfaces and the spreading behavior observed on a paraffin surface are closely related to the dilational loss modulus . These findings not only reveal the relationship between dilational rheology and splashing behavior but also provide insights for the potential application of ionic liquid-type imidazolium Gemini surfactants in more fields.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Hongchao Li,Jianpeng Zou,Senlin Xie,Xian Leng,Di Gao,Xu Mao
WSe 2 films were prepared on inexpensive graphite substrate through direct-current magnetron sputtering and rapid selenization for catalytic application in the hydrogen evolution reaction (HER). The effects of the temperature and time in selenization process on the HER activity were studied in details. Scanning electron microscopy and Raman spectroscopy indicates that the graphite surface is covered by WSe 2 nanosheets . The HER activity of WSe 2 samples prepared at different conditions has been evaluated via linear sweep voltammetry. Through adjusting selenization parameters, the WSe 2 nanofilms consists of the proper nanosheets has been prepared with the optimal HER activity. It’s important to control the number, the size and crystallinity of WSe 2 nanosheets which take responsibility for the HER activity. WSe 2 electrodes prepared at 500 °C for 10 min exhibit high stability in acidic solution and get the optimal activity with an over potential around −179 mV vs reversible hydrogen electrode (RHE) at the current density of 10 mA cm −2 .
研究领域:
材料科学
·
电化学
·
纳米材料
·
催化化学
·
能源材料
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Xinhe Zhang,Li Li,Hongsheng Liu,Bin Huang,Yutong Duan,Shufang Lou,Weiguang Yang
To prevent the chemical degradation of proton-exchange membranes (PEMs) caused by free-radical attacks, in this study, magnetron sputtering technology was employed to deposit Ce, Ti, and Mo elements as free-radical scavengers (FRSs) onto the surface of polytetrafluoroethylene to fabricate perfluorosulfonic acid/polytetrafluoroethylene-M (PFSA/PTFE-M; M = metal ion) composite membranes. By controlling the injection dose, a surface layer of a radical-quenching-ion barrier with controlled depth and dosage was successfully fabricated. After 96 h Fenton testing, the residual weight and the fluoride ion release rates of the modified composite membranes were higher and lower than those of the pristine PFSA/PTFE membrane, respectively. Significantly, the PFSA/PTFE-Mo-3 min membrane exhibited the best chemical stability, highest residual weight of 88.75%, and lowest fluoride ion release rate of 0.414 mmol/g. Furthermore, after accelerated aging tests, the proton conductivity of the modified enhanced composite membranes was higher than that of the pristine PFSA/PTFE membrane, which was opposite to the trend observed before the accelerated aging tests. This indicates that introducing metal ions via magnetron sputtering is an effective method to enhance the chemical stability of PEMs.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）