JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2019
·Vol. 52
·期 11
·115501
·
IF 2.829
Hengyue Li,Hui Guo,Sichao Tong,Keqing Huang,Chujun Zhang,Xiaofeng Wang,Dou Zhang,Xiaohua Chen,Junliang Yang
Supercapacitors have rapidly evolved into one of the important components in energy storage technology with the capability of storing and discharging energy very quickly and effectively. The fabrication of a high-performance supercapacitor carbon electrode via a large-scale printing process can accelerate its commercialization. Herein, a high-performance supercapacitor carbon electrode is processed via a micro-gravure roll-to-roll (R2R) printing technique, and the properties are optimized through web tension, printing speed and morphology control. The supercapacitor with carbon electrodes fabricated by R2R micro-gravure printing shows a capacitance of 151.15 F g−1 and equivalent series resistance (ESR) of 0.37 Ω, which are comparable to the carbon electrodes fabricated via conventional coating. Furthermore, the electrodes show highly promising performance in the application of solid-state supercapacitors, and the light-emitting diode working for nearly 30 s. The research demonstrates that the low-cost, large-scale R2R micro-gravure printing process can be used to produce high-quality electrodes for the supercapacitor, which will accelerate the development of a fully R2R micro-gravure printed supercapacitor and its commercialization.
研究领域:
材料科学
·
能源技术
·
印刷工程
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2018
·Vol. 4
·期 6
·
IF 11.511
Zhenkun Gu,Zhandong Huang,Chang Li,Mingzhu Li,Yanlin Song
Perovskite single-crystal films, which exhibit exceptionally low trap density and nearly perfect translational symmetry, are believed to achieve the highest performance of perovskite-based optoelectronic devices. However, fabrication of these perovskite single-crystal films is quite difficult because of the uncontrollable nucleation caused by the rapid reaction of two perovskite precursors. We report a facile seed printing approach to selectively create millimeter-sized perovskite single-crystal films with controlled thickness and high yield. We show that perovskite single-crystal films can be perfectly transferred to almost arbitrary substrates through the printing process. The as-grown perovskite single-crystal films have excellent crystalline quality and morphology. We further demonstrate that perovskite single-crystal films can be directly printed for scalable fabrication of photodetectors and effective image sensors. This strategy allows high-yield fabrication of large perovskite single-crystal films for functional devices and may extend to other solution-processed materials for wide applications.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
薄膜技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Li Liu,Yu Feng,Jing Liang,Shuaiqi Li,Bin Tian,Weijing Yao,Wei Wu
The current development of wearable electronics has raised the requirement for developing matchable supercapacitors . Currently, most researches have been focused on the electrode materials , but few studies have been carried out on the structure of supercapacitors. Herein, we report an efficient fully-printing fabrication approach to construct flexible in-plane solid-state supercapacitors. Utilization of the screen printing technique, a series of factors which affect the performance of planar supercapacitors have been studied to construct smart planar supercapacitors, including dimensions, finger interspaces, functional layers of active materials and asymmetric structure, which is firstly systematically investigated for efficiently increasing the performance of planar supercapacitors. More interestingly, the planar supercapacitors can be fabricated as various patterns with artistic design on various flexible substrates , demonstrating that the screen printing process is facile and easy scalable for practical production. The optimized symmetric supercapacitors exhibit good mechanical flexibility, outstanding areal capacitance of 35.3 mF cm −2 and superior cycling performance. Compare with the symmetric supercapacitors, higher energy density of asymmetric supercapacitors can be achieved (from 0.00177 mWh cm −2 to 0.00687 mWh cm −2 ). We envision that this strategy of constructing fully-printed flexible planar supercapacitors with structural design paves the way for the improvement of flexible energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2021
·Vol. 413
·期 30
·7473-7483
·
IF 4.157
Zhao Huaqi,Jin Xilang,Zhou Hongwei,Yang Zheng,Bai Haiyan,Yang Jin,Li Yulong,Ma Yiting,She Mengyao
Glutathione and 2-aminopyridine are used as carbon sources to prepare carbon dots (CDs) by a one-step hydrothermal reaction. The results show that the average particle diameter of CDs is 8.64 nm with uniform size distribution and the fluorescence quantum yield is 13.62%. We further demonstrate that novel CDs possess highly selective sensing of Fe 3+ from 0.2 to 200 μM with a low detection limit (0.194 μM). Meanwhile, the fluorescence of CDs can be repeated many times by the addition of S 2− . Moreover, the CDs are used for biological imaging of living cells with well cell penetrability and low toxicity. Furthermore, it is successfully applied for anti-counterfeiting and information encryption. More interestingly, it can be doped with hydrogel and filter paper to prepare solid-phase sensors exhibiting high sensitivity and fast response, demonstrating their tremendous potential for the simple, rapid, and low-cost monitoring of Fe 3+ and S 2− . Graphical abstract
研究领域:
材料科学
·
生物医学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Tao Chen,Chuan Ma,Ben Wang,Linlin Xu,Wu Yang,Lushi Sun
Pyrolysis has proven an effective method of recycling waste printed circuit boards (WPCBs) for high-value product generation. The kinetics and debromination studies on the pyrolysis of WPCBs with copper species was performed using a thermogravimetric-mass spectroscopy analyzer and a vertical quartz-tube reactor. A multiple distributed activation energy model (M-DAEM) was applied to illustrate the potential multiple reactions over the thermal decomposition process. The introduction of copper species into WPCBs reduced the initial activation energies, resulting in lower decomposition temperatures. Meanwhile, several distinct subprocesses were observed and resolved by three-reaction models. The addition of CuO obtained the lowest liquid yield (53.9 wt %) and the maximum gas yield (8.9 wt %), and the introduction of Cu 2 O resulted in the highest solid yield (40.4 wt %). Copper particles preserved 57 % of bromine in residual solid, while CuO and Cu 2 O particles resulted in approximately 65 % and 74 % retention of bromine in the residues, respectively. Particularly, less than 3.7 % of bromine was transferred into the liquid when Cu 2 O was added. The optimal debromination performance of Cu 2 O was attributed to its effective capture capacity of HBr/Br 2 , fairly high catalytic efficiency on dissociating C–Br bond, and multipath conversion of organobromine to cross-linked carbonaceous compounds.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xiaodong Lu,Xiaohui Wang,Xinyang Li,Liqin Chai,Guojin Liu,Jianping Ge,Jianzhong Shao
Patterned photonic crystals (PCs) have great application potential in the textile field owing to their attractive high-saturation iridescent effect. Herein, based on the idea of resist printing, a novel approach to constructing patterned photonic crystals via screen printing was designed and achieved. A colorless pattern with hydrophilic and hydrophobic difference was firstly prepared by screen printing using a hydrophilic polymer paste printed on a hydrophobic fabric, and then the PC structurally colored pattern was obtained through scrapping liquid photonic crystals (LPCs) on the fabric because the LPCs were spread and assembled in the hydrophilic pattern but resisted in the hydrophobic areas, so that to realize the rapid preparation of patterned PCs on the fabric surface. Once the contact angle difference (ΔCA) between the hydrophilic and hydrophobic areas exceeded 80, the “color paste” (that is, LPCs) did not stain the hydrophobic area at all after scrapping, and the assembled PCs pattern showed good contour sharpness and high-saturation iridescence effect. The complex multistructural color patterns on the fabrics were achieved by adjusting the size of nanospheres and using multistep printing and scrapping. The preparation of the protective layer on the PC surface effectively improved the structural stability of the patterned PCs while retaining the optical properties of the pattern. This patterned PCs preparation method was combined with a conventional responsive substance (rhodamine B) to obtain double anti-counterfeiting patterned PCs with the iridescence effect. The results suggested a promising future in both the highly efficient preparation of patterned PCs and the application of PCs in the anti-counterfeiting field.
研究领域:
材料科学
·
纺织工程
·
光学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Lingli Zhu,Dekui Shen,Qi Wang,Kai Hong Luo
Lignin converted to carbon quantum dots (CQDs) attracts tremendous attention for large-scale production of carbon nanomaterials and value-added disposal of biomass wastes (such as the black liquor from pulping industry and the residue from hydrolysis of biomass). The green synthesis of lignin-derived CQDs is reported via a facile two-step method with the adjustment of acid additives containing N or S. The resulting series of CQDs exhibit bright fluorescence in gradient colors from blue to yellowish green, among which the N, S co-doped CQDs with the addition of 2,4-diaminobenzene sulfonic acid show an optimal fluorescence quantum yield (QY) of 30.5%. The red-shift photoluminescence emission behaviors of these CQDs can be attributed to the increased graphitization degree and reduced optical energy band gaps (2.47 → 2.17 eV) with regard to the incorporation of various heteroatoms. The improved fluorescence QYs are consistent with the variation trend of the increased N/C content in the CQDs. The yellowish green-emissive CQDs with bright fluorescence, strong water solubility, and excellent chemical stability perform well in anti-counterfeiting printing. The promising and sustainable approach for the synthesis of tunable fluorescent CQDs exhibits the value-added utilization of lignin for the fluorescence ink production.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Biao Yan,Zhixin Zhao,Xiaojuan Wu,Haoran Li,Duo Liu
Diamond shows great potentials as an ultimate material candidate for application in microelectromechanical systems (MEMS). In this work, we report microcontact printing (μCP) transfer as a facile technique to fabricate diamond MEMS cantilever arrays. We started from the Deryaguin–Landau–Verwey–Overbeek (DLVO) principles and formulated a colloidal “ink” that contains nanodiamonds (NDs) seeds well dispersed in polymethyl methacrylate/acetone. The NDs seeds were then transfer printed onto a silicon (100) substrate by using a flexible polydimethylsiloxane (PDMS) stamp with predefined pattern. The densely packed NDs pattern (∼10 9 cm −2 ) enables facile and selected-area growth of diamond with microwave plasma chemical vapor deposition (MPCVD) technique. A diamond film with minimal graphite contaminants and low residual stresses was obtained after growth at 1118 K for 3 h. The diamond cantilevers were released from the substrate by wet chemical etching using KOH (40 % wt.) and isopropyl alcohol (10 % vol.). An examination of the vibrational kinetics indicates that the diamond film has a high Young's modulus (∼795 GPa) and the cantilevers exhibit consistently distributed resonant frequencies and high quality factors in ambient air. The method opens the door for large-scale, cost-effective production of uniform diamond MEMS devices for sensor and quantum applications.
研究领域:
材料科学
·
微机电系统
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Gan Wan,Tao Chen,Linlin Xu,Lushi Sun
Waste printed circuit boards (WPCBs) containing brominated flame retardants (BFRs) would result in serious environmental pollution without pertinent treatments. However, bromine-containing materials have been proven highly efficient for elemental mercury removal (Hg 0 ). This work proposes a win–win strategy of a cost-effective Hg 0 removal method and a highly efficient utilization of WPCB-derived chars. Diverse copper-containing brominated pyrolytic chars of WPCBs were prepared in a fixed bed reactor at 500–700 °C tailored for Hg 0 removal from coal-fired flue gas. The resulting copper-containing pyrolytic chars were proven to have a high Hg 0 removal efficiency. Various characterizations and adsorption curves insights into the impacts of copper, sorbent weights, pyrolysis and adsorption temperatures, on Hg 0 removal efficiency of WPCB-derived chars. The results indicate that copper in WPCBs enhances the fixation of the bromine elements in pyrolytic chars, resulting in improved Hg 0 removal performance. The optimal pyrolysis and adsorption temperatures for pyrolytic chars are 600 °C and 140 °C, respectively. Under optimized conditions, a Hg 0 removal efficiency exceeding 90 % is realized after 30 min of adsorption. Notably, the results indicating the Hg 0 adsorption capacity of WPCB-derived chars rivals that of commercial activated carbons and significantly surpasses that of biochar. Both adsorption kinetics and characterizations affirm that chemisorption is the predominant adsorption method. The C-Br bond and CuO emerge as crucial active sites facilitating the oxidation of Hg 0 .
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2025
·
IF 2.2
Jiale Huang,Zhiyin Cai,Jingjin Cai,Chengming Yu,Shanglin Xiang,Dongyu Cai
Printing technologies have enabled the low-cost and large-scale production of MXene-based transparent
conductive electrodes. Fabrication of inks with MXene monolayers in liquid phase for printing requires
bespoke centrifugation separation, and yield is low. MXene sediment, a byproduct of the centrifugation
separation process, is a rich source for creating concentrated MXene inks. However, removing impurities,
particularly lithium fluoride, from sediment remains a significant challenge for producing high-quality
inks. This study reported the first purification route for removing lithium fluoride from sediment by
controlling the addition of lithium fluoride during the etching of MAX precursors. This resulted in a
concentrated ink that produced large MXene monolayers. The vacuum filtered film had an ultra-high
conductivity of over 20000 S/cm. Gravure printing produced a TCE with a low sheet resistance of 560
Ω/sq and 84% transmittance, eliminating the need for annealing post-treatment.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2019
·Vol. 48
·期 5
·2745-2753
·
IF 1.676
Zhan Haijiao,Guo Jiayu,Shen Jiali,Wang Xiaorong,Fan Zhonghua,Guo Bing,Liu Wei,Shen Hangyan
Silver microparticles have inspired much research interest due to their enhanced properties for use in optical, electric, catalytic, and magnetic applications. One such use is as electrically conductive filler for printed electronics. A manufacturing approach has been developed to prepare low-curing-temperature silver pastes. Firstly, silver flakes were synthesized directly by a one-step aqueous-phase reduction reaction, using silver nitrate as silver salt precursor and iron(II) sulfate heptahydrate as reducing agent. Various silver flake samples were synthesized by controlling experimental parameters such as the reaction temperature, surfactant concentration, and reducing agent concentration. The obtained silver powders were characterized by x-ray diffraction analysis, scanning electron microscopy, and dynamic light scattering measurements. The results revealed that the morphology of the silver powders was a plate-like structure with diameter of 1 μ m to 1.5 μ m and thickness of 30 nm. The prepared silver flakes were then used directly without ball milling to prepare low-curing-temperature silver pastes. The bulk resistivity of a line screen-printed using silver paste containing 48 wt.% (34 ± 5 vol.%) silver flakes and cured at 140°C for 30 min in air was about (1.773 ± 0.118) × 10 −6 Ω m. More importantly, the prepared screen-printed patterns exhibited excellent durability in terms of peel strength and folding endurance.
研究领域:
材料科学
·
纳米技术
·
电子工程
·
应用化学
·
先进制造
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2017
·
IF 2.714
Shan Wan,Yun Cong,Dan Jiang,Ze-Hua Dong
Superhydrophobic coating was firstly applied on printed circuit board (PCB) based on fluoroalkylsilane modified silica colloid suspension in methyl triethoxysilane solution. Through a feasible sol-gel method and subsequent curing process, we prepared a superhydrophobic coating on PCB that exhibits high water contact angle (CA) of 158° and low sliding angle (SA) of 3°. Weathering test results verify that the superhydrophobic coating not only has good waterproof and self-cleaning capability, but also performs well in protecting against UV irradiation or strong acid or base solution to some extent. Further electrochemical tests indicate that the superhydrophobic coating on the PCB-Cu and PCB-Sn electrodes shows excellent corrosion resistance in 1 wt.% NaCl aqueous solution with 99.6% and 98.7% inhibition efficiency respectively. In addition, the thin superhydrophobic coating (∼2 μm) may endow the underlying PCB with promising heat dissipation ability. Therefore, it can be concluded that the superhydrophobic coating could dramatically increase the weathering resistance of PCB.
研究领域:
材料科学
·
电子工程
✓ 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）