JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Kun Wang,Hongliang Zhang,Guoxin Chen,Tian Tian,Kai Tao,Lingyan Liang,Junhua Gao,Hongtao Cao
The complementary electrochromic devices based on WO 3 and Prussian blue electrodes (PB) have shown a limited chemical stability and durability because WO 3 is degraded in electrochromic performance and PB is gradually dissolved in the Li + -based electrolyte under neutral pH conditions. Herein, the utilization of acetic acid as super-additive solution was proposed to improve WO 3 cathodes and stabilize PB anodes, in which the highly nanoporous nanocrystal-in-glass WO 3 and hierarchical PB was made by electron beam evaporation and electrochemical deposition method, respectively. Our findings suggest that synergistic effects of Li + and H + on WO 3 and Prussian blue electrodes contribute to the improvement on electrochemical, electrochromic, and cycling stability performance of the whole device. Impressively, the WO 3 -PB complementary electrochromic device could experience a superior long-term cycling stability of over 10,000 cycles, with a high coloration efficiency of 137.80 cm 2 C −1 and a maximum transmittance modulation of 66.22%@ 633 nm. All these results open a new way to the construction of high-performance electrochromic 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
ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Hao Shan,Changbai Liu,Li Liu,Jinbao Zhang,Haiying Li,Zhen Liu,Xiaobo Zhang,Xiaoqing Bo,Xiao Chi
SnO2–Fe2O3 interconnected nanotubes were obtained by combining the single nozzle electrospinning and thermal treatment methods. The results of scanning electron microscopy revealed the special structure of ruptures and interconnected nanotubes in the as-prepared materials. The toluene sensing test results of SnO2–Fe2O3 interconnected nanotubes show that SnO2–Fe2O3 interconnected nanotubes possess excellent toluene gas-sensing properties. The sensitivity of detecting limit (50 ppb) is 2.0 at the optimum operating temperature of 260 °C. The response and recovery times to 1 ppm toluene are about 5 and 11 s, respectively. Moreover, the SnO2–Fe2O3 interconnected nanotube gas sensors exhibit the remarkable selectivity to toluene, and good long-term stability.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTEGRATED FERROELECTRICS
·
2019
·
IF 0.486
Chengyi Chu,Huangsheng Wu,Aihua Sun,Xiaobing Tang,Yugang Yan,Guoxiong Shao,Zhixiang Li,Jianjun Guo,Gaojie Xu
The multresponsive photonic hydrogels (MRPHs) based on Fe3O4@C NPs and Acrylamide-N-isopropylacrylamide (AM-NIPAM) was prepared by UV polymerization process with the help of magnetic field. This work is mainly about the long-term stability of MRPHs. The mechano-response performance of MRPHs after being remained in water for a year has been measured and discussed in details. The result shows that the MRPHs were still very sensible and exhibit brilliant structure color. The reflectance peak of MRPHs changed markedly (from 700 nm to 550 nm) as increasing compression from 0 to 1N and the structure color change can be made reversible for ∼100 times or even more if necessary. Besides, the structure color of MRPHs was broken after being natural air-dried for 3 months and it can recover when dried MRPHs were immerged in water for 10 hours. So the MRPHs have good stability and the structure color can persevere for long time without fading, which contributes to the piratical application of MRPHs used as sensors.
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
Materials
·
2024
·Vol. 17
·期 11
·2683
·
IF 3.1
Stephan Handschuh-Wang,Tao Wang,Zongyan Zhang,Fucheng Liu,Peigang Han,Xiaorui Liu
Thermal transport is of grave importance in many high-value applications. Heat dissipation can be improved by utilizing liquid metals as thermal interface materials. Yet, liquid metals exhibit corrosivity towards many metals used for heat sinks, such as aluminum, and other electrical devices (i.e., copper). The compatibility of the liquid metal with the heat sink or device material as well as its long-term stability are important performance variables for thermal management systems. Herein, the compatibility of the liquid metal Galinstan, a eutectic alloy of gallium, indium, and tin, with diamond coatings and the stability of the liquid metal in this environment are scrutinized. The liquid metal did not penetrate the diamond coating nor corrode it. However, the liquid metal solidified with the progression of time, starting from the second year. After 4 years of aging, the liquid metal on all samples solidified, which cannot be explained by the dissolution of aluminum from the titanium alloy. In contrast, the solidification arose from oxidation by oxygen, followed by hydrolysis to GaOOH due to the humidity in the air. The hydrolysis led to dealloying, where In and Sn remained an alloy while Ga separated as GaOOH. This hydrolysis has implications for many devices based on gallium alloys and should be considered during the design phase of liquid metal-enabled products.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 29
·期 11
·1806250
·
IF 13.325
Tao Yang,Shanliang Chen,Xiaoxiao Li,Xiaojie Xu,Fengmei Gao,Lin Wang,Junhong Chen,Weiyou Yang,Xinmei Hou,Xiaosheng Fang
In the present work, high-performance photodetectors (PDs) based on a single B-doped 3 C -SiC nanobelt, which are synthesized via catalyst-free pyrolysis of polymeric precursors of polysilazane, are reported. The as-built PDs have a high responsivity and external quantum efficiency of 6.37 × 10 5 A · W −1 and 2.0 × 10 8 % under 405 nm light with a power density of 0.14 mW · cm −2 at 5 V, respectively. The detectivity of the PDs is measured to be of 6.86 × 10 14 Jones. Moreover, the B-doped 3 C -SiC nanobelt PDs exhibit a long-term stability against 300 °C up to 180 days, suggesting their promising applications to be served under harsh conditions.
研究领域:
材料科学
·
光电探测
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
Xiao-Nan Huo,Ke-Xiang Wang,Ran Yin,Wei-Wei Sun,Yan-Sheng Sun,Yu-Kun Gao,Ting-Ting You,Peng-Gang Yin
Hole transporting layer (HTL)-free, carbon-based all-inorganic CsPbI 2 Br perovskite solar cells have attracted great attention with suitable band gap, excellent thermal stability, low manufacturing cost and simplified procedure processes. Focusing on issues including energy level match and contact between the carbon electrode and the perovskite layer that limit the device performance, passivation strategies are widely applied on the interfaces within perovskite solar cells. Herein, the effect of synergistic passivation of ethylammonium iodide (EAI) and phenethylammonium iodide (PEAI) on all-inorganic perovskite (CsPbI 2 Br) solar cells is studied for the first time. Results indicate that α-/δ-phase heterojunction and localized 2D/3D heterojunction formed on the CsPbI 2 Br film surface tend to reduce the trap density and promotes the energy level gradient arrangement. In addition, EA + ions enter into the lattice and passivate the bulk phase defects of perovskite. As a result, the synergistic passivated devices (active area 0.0706 cm 2 ) exhibit an increased PCE from 11.74% to 13.76% and a high fill factor (FF) of 80.32%, as well as promising long-term stability.
研究领域:
材料科学
·
光伏技术
·
界面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 35
·16965-16973
·
IF 4.682
Wang Tao,Lu Yang,Xu Lin,Chen Zheng Jian
Surface-enhanced Raman scattering (SERS) has drawn attention to broad applications. Here, we investigate the SERS property of the π-conjugated poly(3-hexylthiophene-2,5-diyl) (P3HT) for molecule detection. The crystal structure of π-conjugated P3HT thin films is of the great significance to its SERS property. Our results show that the optimized crystal structure can significantly improve its SERS property. The SERS substrate has an excellent signal reproducibility (RSD < 10%). In addition, the SERS substrate still remains a good Raman enhancement after one year and shows excellent long-term stability compared with those of other types of SERS substrate. The result of our theory calculation shows that significant π-stacking of the probe molecules with the thiophene π-cores molecules plays an important role in the large SERS enhancement by the charge transfer mechanism. The increase in the crystallinity of the P3HT film can improve the charge transfer of the substrate molecules and the methylene blue (MB) molecules via more effective chemisorption of the probe molecules with the substrate molecules. The study contributed to the rational design of the organic semiconductor polymer SERS substrate with high sensitivity, selectivity, and long-term stability. Graphical abstract
研究领域:
材料科学
·
光谱学
·
有机化学
✓ 已验证
DOI
高影响因子
Particuology
·
2022
·
IF 3.251
Yukui Gou,Yuanye Hao,Weilong Cai,Jianying Huang,Yuekun Lai
Particulate matter (PM) is a significant danger to both environment and human health. Despite the development of a series of air filters, they do not work well in harsh environment such as high temperature, high humidity or long-time filtration. To make a three-dimensional (3D) particle capture device, a sacrificial template approach was used to manufacture polydimethylsiloxane (PDMS) sponge, and then zeolite imidazole framework-8 (ZIF-8) was grown in situ on the 3D network of PDMS sponge. The removal efficiency of PM 2.5 or PM 10 is greater than 99.8% because of the high specific surface area and porous network structure of PDMS sponge, as well as the large number of metal sites of ZIF-8. In addition, the sponge filter has long-term filtration stability and still achieves excellent performance after 65 h of filtration. The composite sponge can adapt to harsh environments such as high temperature (250 °C) and high humidity (90% RH). Composite sponge filter has a regular shape, and it may be customized to any shape as required. This study provides a new idea for designing 3D high-efficiency air filters that can adapt to harsh environments.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yiyang Kang,Weichao Lin,Yinuo Wan,Lixia Bao,Xiao Xu,Yufei Wang,Pengpeng Liu,Jiliang Wang
Antifogging packaging is crucial for prolonging the shelf life of products in the fields of food, vegetable, and fruit preservation. To date, obtaining antifogging films with the merits of ease of preparation, facilitation of large-scale industrialization, and outstanding reliability through common thermoplasticization methods like film blowing is challenging. Herein, we develop a facile method to prepare hydrophilic core–shell nanocapsules with a particle size less than 200 nm, which are composed of the inner amphiphilic Span-80 molecules acting as main antifogging units and the outer cross-linked copolymeric networks as supramolecular lock-shell layers and supplementary antifogging units to prevent the rapid migration of Span-80 from the hydrophobic polyethylene (PE) host. Long-term antifogging PE films composed of PE pellets and different contents of the prepared hydrophilic nanocapsules are directly obtained by using the most industrialized film blowing technique. Chemical structure, optical, mechanical, thermal, and antifogging performances of the produced antifogging films are evaluated. The results reveal that the synthesized nanocapsules with the supramolecular lock-shell layer show outstanding storage stability, form stability, hydrophilicity, and thermal stability. PE films with the content of the encapsulated Span-80 nanocapsules of about 1.6 per hundred rate can exhibit excellent hydrophilicity. The practical antifogging effect of the produced nanocapsule-doped PE films reveals that the film can still show remarkable antifogging ability even after experiencing various harsh conditions such as friction, water washing, and long-term storage and that the film can effectively prolong the shelf time of common vegetable and fruit. The strategy of the fabricated antifogging PE films probably opens a new avenue to develop the next generation of long-term antifogging packaging films.
研究领域:
材料科学
·
包装工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Yuxiang Li,Kaili Zhang
Aluminum powder is widely used as a high-energy fuel in the domain of energetic materials, while the oxidation kinetics of Al is limited by the oxide shell on the particle surface which acts as a reaction barrier. Recently, transition metal fluorides have emerged as an intriguing type of fluorine-containing oxidizers which can improve reactivity of Al through interfacial fluorination. However, most previous research focused on micron-sized fluorides, while the reactivity of nanosized fluoride in energetic composite was rarely studied. In this work, nanosized NiF 2 (∼100 nm) was synthesized through a facile and safe approach, and it was coupled with nanosized and micron-sized Al powders to form energetic composites. Regardless of dimension of Al, Al/NiF 2 composite exhibited higher specific heat release, higher reaction efficiency, and lower reaction temperature than that of corresponding Al/NiO composite. Post-characterizations suggested that elemental Ni and AlF 3 were produced from the reaction of Al/NiF 2 composite at 710 °C, and AlF 3 was found to evaporate over 900 − 1050 °C. The long-term stability of energetic composites was evaluated through a real-time aging test for 12 months, and only slight energy degradation (<7.5 %) was founded in Al/NiF 2 composite. Concerning combustion behavior, Al/NiF 2 composite showed relatively low flame brightness but a comparable pressure generation compared to Al/NiO composite, which is presumably attributed by the endothermic evaporation of AlF 3 . A notable finding is that hybrid Al/NiF 2 /NiO composite exhibits superior pressure output, and this composite is rather explosive even for small charge amount, which shows the potential as a novel primary explosive.
研究领域:
材料科学
·
燃烧与爆炸领域
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Meidan Que,Shenghui He,Yutian Li,Yuan Xu,Bo Li,Jian Wei,Lili Gao,Wei Huang,Shengzhong Liu
Organic–inorganic formamidinium lead triiodide (FAPbI 3 ) hybrid perovskite quantum dots (QDs) have garnered considerable attention in the photovoltaic field due to their narrow bandgap, exceptional environmental stability, and prolonged carrier lifetime. Unfortunately, their insulating ligands and surface vacancy defects pose significant obstacles to efficient charge transfer across device interfaces. In this work, an electrostatic harmonization strategy at the interface using a donor-acceptor dipole molecular attachment to achieve enhanced charge separation capabilities on the QD surface is ventured. On the basis of theoretical study and experimental evaluation, it has gained a comprehensive understanding of dipole-induced electronic restructuring at the quantum dot interfaces. It reveals that 3-fluoro-4-iodopyridine as a dipole source with appropriate energy levels and a high dipole moment effectively fills surface iodine vacancies (V I- ), leading to rapid separation of photoexcited charge carriers. Particularly enhanced hole mobility and hydrophobicity are achieved through strong electronegative effects of fluorine and iodine. Consequently, the FAPbI 3 QD solar cells achieve a power conversion efficiency as high as 14.11% with exceptional long-term stability in ambient. These perceptions provide effective interface engineering means for the hybrid perovskite QDs to advance their potential in high-performance optoelectronic applications.
研究领域:
材料科学
·
光电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Shuai Chen,Wei Zhou,Yani Ding,Guang-Bo Zhao,Ji-Hui Gao
The potential energy of SO2 is wasted in the process of converting Na2SO3 to Na2SO4 via air oxidation during conventional treatment of SO2-contaminated air. Considering that the oxidation of Na2SO3 is thermodynamically and kinetically much easier than the oxygen evolution reaction (OER), this study proposes replacing the OER with Na2SO3 oxidation to recover the potential energy of SO2 and simultaneously reduce the energy consumption of water electrolysis. First, the influences of the reaction temperature and Na2SO3 concentration on Na2SO3-assisted water electrolysis (SAWE) were studied. Then, the difference between Na2SO3 electrolysis and water electrolysis was compared under optimum conditions. Furthermore, the long-term stability of SAWE was assessed. The results of this study suggest that the onset potential of water electrolysis decreases from 0.73 V vs saturated calomel electrode (SCE) to 0.28 V vs SCE by replacing the OER with Na2SO3 oxidation. The energy consumption of producing hydrogen by water electrolysis is reduced with the use of the potential energy of SO2. For SAWE, the Na2SO3 oxidation kinetics and hydrogen production rate are improved as the reaction temperature and Na2SO3 concentration increase.
研究领域:
环境科学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）