Energy Storage Materials
·
2017
·
IF 0
Liping Wang,Lei Zhang,Qingji Wang,Wenjun Li,Bo Wu,Weishang Jia,Yuehui Wang,Jingze Li,Hong Li
Lithium metal is a Holy Grail anode for high energy density lithium ion batteries . While, its high chemical reactivity and high tendency to form dendrites hinder its wide applications. Here, in this study, we stabilize lithium metal by engineering an artificial SEI layer, namely fabricating a conformal nano-meter thickness amorphous Al 2 O 3 thin film via magnetron sputtering technique on its surface. The obtained Al 2 O 3 modified Li metals present robust chemical surface stability and effectively restrain the dendrite growth. 20 nm-thick Al 2 O 3 film modified lithium metal in an all-solid-state battery Li/PEO-LiTFSI/Li ensures a cycle life of 660 h at a current density of 0.1 mA/cm 2 . Contradicting to a traditional belief of lithium plating at the current collector side via crossing the Al 2 O 3 film, it directly plates on the Al 2 O 3 film next to the separator side. Al 2 O 3 film plays a crucial role as a “surfactant” in inducing a layer-by-layer film growth mode.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
Materials
·
2021
·Vol. 14
·期 7
·1803
·
IF 3.623
Yibo Ma,Xiaofeng Zhang,Weiming Liu,Youxiu Wei,Ziyi Fu,Jiuyong Li,Xuan Zhang,Jingjing Peng,Yue Yan
A batch of Sn oxides was fabricated by pulse direct current reactive magnetron sputtering (pDC−RMS) using different Ar/O2flow ratios at 0.3 Pa; the influence of stoichiometry on the physical and electrochemical properties of the films was evaluated by the characterization of scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray reflection (XRR), X-ray photoelectron spectroscopy (XPS) and more. The results were as follows. First, the film surface transitioned from a particle morphology (roughness of 50.0 nm) to a smooth state (roughness of 3.7 nm) when Ar/O2flow ratios changed from 30/0 to 23/7; second, all SnOxfilms were in an amorphous state, some samples deposited with low O2flow ratios (≤2 sccm) still included metallic Sn grains. Therefore, the stoichiometry of SnOxcalculated by XPS spectra increased linearly from SnO0.0.08to SnO1.71as the O2flow ratios increased, and the oxidation degree was further calibrated by the average valence method and SnO2standard material. Finally, the electrochemical performance was confirmed to be improved with the increase in oxidation degree (x) in SnOx, and the SnO1.71film deposited with Ar/O2= 23/7 possessed the best cycle performance, reversible capacity of 396.1 mAh/g and a capacity retention ratio of 75.4% after 50 cycles at a constant current density of 44 μA/cm2.Keywords:tin oxide film;reactive magnetron sputtering;oxygen vacancy;cycle performance
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2018
·Vol. 102
·期 4
·1758-1767
·
IF 2.956
Nan Jiang,Weiping Lin,Yu Zhao,Juntao Wang,Qingsong Gao,Haiyun Qu,Lin Ge,Tengfei Xie,Qiang Liu,Yubai Pan,Jiang Li
Using the tape casting method combined with vacuum sintering and hot isostatic pressing, high-quality planar waveguide YAG/10 at.%Yb:YAG/YAG ceramics were successfully prepared. For the sample presintered at 1750°C for 30 hours and then HIPed at 1700°C for 3 hours in 200 MPa argon, the in-line transmittance reached 82.5% at 400 nm and the average grain size was ~17.1 μm. The diffusion behaviors of Yb ions across the contact boundary between the cladding YAG layer and the core Yb:YAG layer were determined by Fick's second law. Then, a 1030 nm continuous-wave (CW) Yb:YAG planar waveguide ceramic laser based on the structure of master oscillator power amplification (MOPA) was realized. After a single-pass amplification, the maximum output of the ceramic slab (60 × 10 × 1 mm 3 ) reached 1251 W and the corresponding optical-to-optical efficiency was 30.0%, which is the highest output power of a Yb:YAG planar waveguide ceramic laser to the best of our knowledge.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 2
·164
·
IF 2.9
Wanlei Dai,Zhaoyi Jiang,Yali Sun,Juhua Wang,Zeran Gao,Haoyu Xu,Xinzhan Wang,Chao Gao,Qiang Ma,Yinglong Wang,Wei Yu
In this study, a feasible strategy is proposed for directly depositing high-quality Cu(In,Ga)Se2(CIGS) films using Na-doped targets in a selenium-free atmosphere to boost the power conversion efficiency (PCE) of CIGS solar cells. Introducing a small amount of sodium dopant effectively promoted the textured growth of CIGS crystals in the prepared films, resulting in larger grain sizes and a smoother interface. The higher MoSe2content at the CIGS/Mo interface increased the carrier lifetime in the films. In addition, sodium doping increased the proportion of Se atoms on the film surface and reduced the concentration of defects caused by the direct sputtering of the films in the selenium-free atmosphere. Therefore, the separation and transportation of photo-generated carriers in the devices were effectively enhanced. Using the optimized parameters, a record-high PCE of 17.26% was achieved for the 7.5% Na-doped devices, which represents an improvement of nearly 63%.Keywords:Cu(In,Ga)Se2;sodium-doped targets;magnetron sputtering;solar cells
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
Nanomaterials
·
2018
·Vol. 8
·期 5
·289
·
IF 3.504
Mingli Wang,Guochao Shi,Yanying Zhu,Yuhong Wang,Wanli Ma
Rapid sampling and multicomponent analysis are vital in pesticide residue detection. In this work, we proposed a SERS platform to detect three kinds of pesticides on apple peels simultaneously by a straightforward “press and peel off” method. The flexible Au/dragonfly wing (Au/DW) substrate was obtained from sputtering Au nanoislands on DW bioscaffold arrays by a simple direct current (DC) magnetron sputtering system. The high-performance substrate exhibited a low limit of detection (LOD) to 4-aminothiophenol (4-ATP) (10−9M), outstanding reproducibility (less than 12.15%), good stability and suitability in multifold pesticide residues detection. Considering its excellent sample collection efficiency, the Au/DW substrate was employed to solve critical pesticide residue problems for detection of acephate (APT), cypermethrin (CPT), tsumacide (MTMC) and their multiple components on apple peels. The results show that the LOD was 10−3ng/cm2for APT obtained on the apple surface with a calculation equation of y = 0.26x + 6.68 and a determination coefficient (R2) of 0.970. Additionally, the LOD values for CPT and MTMC were 10−3ng/cm2and 10−4ng/cm2, respectively. The finding in this work may provide a promising biomimetic SERS platform for on-spot detection of other organic pollutants in the food industry and inenvironmental protection.Keywords:SERS;dragonfly wing;magnetron sputtering;pesticide residue
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 30
·2303414
·
IF 15.1
Hu Li,Guo-Qin Yang,Xiao-Yang Hu,Yi-Hua Hu,Rui-Bo Zeng,Jin-Rui Cai,Li-Quan Yao,Li-Mei Lin,Li-Ping Cai,Guilin Chen
Sb 2 S 3 is rapidly developed as light absorber material for solar cells due to its excellent photoelectric properties. However, the use of the organic hole transport layer of Spiro-OMeTAD and gold (Au) in Sb 2 S 3 solar cells imposes serious problems in stability and cost. In this work, low-cost molybdenum (Mo) prepared by magnetron sputtering is demonstrated to serve as a back electrode in superstrate structured Sb 2 S 3 solar cells for the first time. And a multifunctional layer of Se is inserted between Sb 2 S 3 /Mo interface by evaporation, which plays vital roles as: i) soft loading of high-energy Mo particles with the help of cottonlike-Se layer; ii) formation of surficial Sb 2 Se 3 on Sb 2 S 3 layer, and then reducing hole transportation barrier. To further alleviate the roll-over effect, a pre-selenide Mo target and consequentially form a MoSe 2 is skillfully sputtered, which is expected to manipulate the band alignment and render an enhanced holes extraction. Impressively, the device with an optimized Mo electrode achieves an efficiency of 5.1%, which is one of the highest values among non-noble metal electrode based Sb 2 S 3 solar cells. This work sheds light on the potential development of low-cost metal electrodes for superstrate Sb 2 S 3 devices by carefully designing the back contact interface.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Yuanzhen Duan,Jiyuan Zhu
Developing spray/template-free superamphiphobic surfaces that can resist various kinds of liquids is crucial for academic study and practical demands. In spite of significant evolution, facilely fabricating superamphiphobic surfaces remains a daunting challenge due to the practical dilemma of the time-consuming preparation process and the guarantee of wettability performance. Herein, a facile magnetron-sputtering-assisted chemical deposition technique is advanced to constitute hierarchical dendritic fractal structures on AZ91D Mg alloys that showcase remarkable biomimicry while significantly contributing to superamphiphobicity through extended re-entrant structures. As well as demonstrating promising chemical stability, such surfaces can display exceptional resistance to water and ethylene glycol. The approach employed to create such instrumental superamphiphobic surfaces offers substantial benefits in affordability and efficiency. Remarkably, the entire preparation process only takes 26 min, presenting a novel method for preparing superamphiphobic surfaces.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
FUSION ENGINEERING AND DESIGN
·
2016
·
IF 1.301
Jiaqiu Luo,Jialing Yin,Hao Zhang,Mengqi Yao,Wencheng Hu
This work aimed to fabricate a gold coating on the surface of ultralow-density carbon-hydrogen foam cylinder without electroless plating. Poly (divinylbenzene/styrene) foam cylinder was synthetized by high internal phase emulsion, and chemical vapor deposition polymerization approach was used to form a compact poly- p -xylylene film on the foam cylinder. Conducting gold thin films were directly deposited onto the poly- p -xylylene-modified foam cylinder by magnetron sputtering, and electrochemical deposition was adopted to thicken the gold coatings. The micro-structures and morphologies of poly (divinylbenzene/styrene) foam cylinder and gold coating were observed by field-emission scanning electron microscopy. The gold coating content was investigated by energy-dispersive X-ray. The thicknesses of poly- p -xylylene coating and sputtered gold thin-film were approximately 500 and 100 nm, respectively. After electrochemical deposition, the thickness of gold coating increased to 522 nm, and the gold coating achieved a compact and uniform structure.
研究领域:
材料科学
·
表面工程
✓ 已验证
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
·
能源工程
✓ 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
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
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
危险品化学品经营许可证（带存储）