CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Salman Riaz,Liu Min,Zhong Zhenwu,Qi Ying,Wei Peng,Jian Cheng,Min Jae Ko,Mi Hongyu,Muhammad Salik Qureshi,Shayan Umar,Yahong Xie
Electron transport layer has always played a crucial role in the performance of the perovskite solar cells (PSCs). Particularly, SnO 2 -based PSC has sparked considerable interest due to its superior properties. Even with such remarkable properties, certain challenges persist such as agglomeration of SnO 2 particles which can lead to interfacial defects and poor morphology. To solve this problem, Agmatine Sulfate (AGTS) has been introduced as an interfacial modification agent which with the help of its active functional group including amide (-NH 2 ) and hydroxyl (OH) has allowed to facilitate the interaction at the interface between SnO 2 and perovskite. The interaction facilitates the growth of perovskite crystals while tuning the energy levels which has boosted the charge transfer capability of the layer. All these improvements in the properties have led to enhanced power conversion efficiency (PCE) from 11.17 % to 15.20 % for the encapsulated device. Furthermore, the modification also improved the long-term stability of the device as the AGTS-modified devices retained 87 % of their performance at 15–25 °C with humidity levels between 10 and 20 % for over a period of 31 days. Finally, the devices prepared with the AGTS also showed repeatability in their performance while boosting the overall performance of carbon-based PSCs (C–PSCs) and indicating a novel approach to not only increase but also accelerate the commercialization of C-PSC.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2021
·
IF 9.078
Jinzhe Li,Zhengkang Xu,Tian Li,Dandan Zhi,Yao Chen,Quanhong Lu,Jingjing Wang,Qian Liu,Fanbin Meng
The rapid development of high performance detection technology promotes the innovation of stealth technology moving towards the direction of multi-band compatibility, but suffers great challenges. Especially for the widely used radar detection and infrared detection, how to overcome the contradiction between their corresponding stealth materials and develop high-performance stealth materials with microwave-infrared compatible property is extremely urgent. Herein, flexible cellular reduced graphene oxide aerogels modulated by antimony tin oxide (ATO/rGO) have been synthesized by self-assembly, which demonstrate excellent microwave-infrared stealth compatibility. Remarkably, the aerogel exhibits dual-absorption in microwave stealth caused by strong interface polarization, achieving the maximum reflection loss (RL) of −40.92 dB at 11.36 GHz coupled with another absorption peak of −19.82 dB at 16.64 GHz and a broadest effective absorption bandwidth of 9.8 GHz covering the X band and Ku band, which can be verified by electromagnetic finite element method simulation. Moreover, trace amount of loss components ATO in conductive network structure guarantee the low infrared emissivity (0.383) and thermal insulation synchronously, which is the key to compatibility with infrared stealth. The light ATO/rGO aerogels demonstrate the great prospect for anti-detection and security protection, providing a novel approach for multispectral compatible stealth.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 15
·155505
·
IF 3.874
Shengliang Zheng,Jianyong Sun,Juanyuan Hao,Quan Sun,Peng Wan,Yue Li,Xin Zhou,Ye Yuan,Xu Zhang,You Wang
Ever-increasing concerns over air quality and the newly emerged internet of things (IoT) for future environmental monitoring are stimulating the development of ultrasensitive room-temperature gas sensors, especially for nitrogen dioxide (NO2), one of the most harmful air pollution species released round-the-clock from power plants and vehicle exhausts. Herein, tin dioxide nanorods/ethylenediamine-modified reduced graphene oxide (SnO2/EDA-rGO) heterojunctions with selective adsorption and electronic structure modulation were engineered for highly sensitive and selective detection of NO2 at room temperature. The modified EDA groups not only enable selective adsorption to significantly enrich NO2 molecules around the interface but also realize a favorable modulation of SnO2/EDA-rGO electronic structure by increasing the Fermi level of rGO, through which the sensing performance of NO2 is synergistically enhanced. The response of the SnO2/EDA-rGO sensor toward 1 ppm NO2 reaches 282%, which exceeds the corresponding SnO2/rGO sensor by a factor of 2.8. It also exhibits a low detection limit down to 100 ppb, enhanced selectivity, and rapid response/recovery kinetics. This approach to designing a novel heterojunction with significantly enhanced chemical and electric effects may shed light on the future engineering of gas-sensing materials.
研究领域:
材料科学
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环境科学
·
化学传感器
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Aifei Wang,Junjie Li,Yupeng Zhang,Suwen Cheng,Yanchen Wang,Yuan Xie,Chen Yu,Haoyu Chen,Jingjin Dong,Jiupeng Cao,Fangfang Wang,Wei Huang,Tianshi Qin
Luminescent solar concentrators (LSC) have the potential application in building integrated photovoltaic (BIPV). 0D tin-based perovskites are a promising embedding phosphor in LSC due to the large Stokes shift and high photoluminescence quantum yield. But the instability and uncontrollable crystal growth are severe limiting their successful utilization in device fabrication. To tackle these issues, double-shell encapsulated configurations are presented, soft ligands of hypophosphorous acid and hard-shell of hollow mesoporous silica are simultaneously suppressing the oxidation of Sn 2+ and restricting crystal growth within nano-matrix. The stable phosphor is subsequently embedded into LSC for harvesting solar energy and the resulting output power efficiently drives the combined electrochromic glass under natural light. These fabricated devices also offer the self-adaptable switch on/off functionality to regulate light absorption with variable solar irradiation intensity in real time. This approach is anticipated to open new avenues for utilizing lead-free perovskite nanomaterials in self-powered smart windows for BIPV.
研究领域:
材料科学
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能源技术
·
光电工程
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2023
·Vol. 17
·期 10
·2300158
·
IF 11
Gangyi Zhang,Deyin Wang,Jiejun Ren,Xiaopeng Zhou,Yuhua Wang
Luminescent metal halides have attracted increasing attention because of their tunable emission and superior photoelectric properties. However, it is still challenging to achieve near-infrared (NIR) emission from metal halides, which is important in applications such as food quality analysis and night vision. In this work, the broadband NIR emission is achieved by alloying Sn 2+ into zero-dimensional (0D) Cs 2 ZnBr 4 . The incorporating of Sn 2+ cations enables the originally weakly luminescent Cs 2 ZnBr 4 to exhibit an efficient broadband NIR emission. Upon photoexication, the optimized Sn 2+ alloyed Cs 2 ZnBr 4 (Cs 2 Zn 0.875 Sn 0.125 Br 4 ) exhibits a highly efficient broadband NIR emission peaked around 700 nm, with a large Stokes shift of 323 nm, a full width at maximum of 177 nm, and a high quantum efficiency of around 41%. Spectroscopic and theoretical calculations unveil that the efficient NIR emission originates from the self-trapping emission introduced by the Sn alloying. In addition to the high efficient broadband emission, the Sn 2+ alloyed Cs 2 ZnBr 4 also exhibits high thermal stability, retaining 78% of its initial intensity at 150 °C. The night vision application is demonstrated by using a light source fabricated by combining Sn 2+ alloyed Cs 2 ZnBr 4 phosphor with a 365 nm LED chip in the dark.
研究领域:
材料科学
·
光电子学
·
无机化学
·
固态物理
·
光学材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wang Yao,Qiang Li,Peng Qin,Jun Qian,Xuli Ding
An efficient interface and composition modification strategy is proposed to significantly increase the rate capacity and initial Coulombic efficiency (ICE) of SnO anodes via energy band structure modulation for Na-ion batteries (SIBs). The as-fabricated SnO@Bi@C material with Bi nanocrystals homogeneously dispersed on and around the SnO surface is prepared by an electrospinning method. The excellently dispersed Bi nanocrystals realize an effective interface contact with SnO and Na2O, which effectively lowers the electron conduction barriers and promotes sodium-ion release and transport upon the desodiation process, increasing the rate capacity and ICE of the SnO anode. The prepared SnO@Bi@C exhibits a much higher rate capacity up to 10 A g–1, except an improved ICE of 80.67%, compared to 57.38% of SnO@C. Importantly, the intercalation of Na+ between layer-structured Bi galleries provides a good basis for excellent cycle stability due to the highways constructed inside the prepared composites. This finding provides an effective tactic to establish ion transport high-speed channels, which essentially increase the rate performance and the ICE of the SnO-based anodes.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
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固态物理
·
电池技术
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Mi Lu,Yanyan Tian,Youpeng Li,Wanlu Li,Xiaodong Zheng,Bing Huang
A kind of nanosized, spherical-like Sn-Ni alloy composite was synthesized by spray drying the ball-milled mixture of SnO 2 , NiO and Super P carbon to obtain the precursor, then the metal oxides were reduced by carbon at 900 °C for 2 hrs. The morphology of the sample shown by scanning electronic spectroscopy was spherical-like particle with a diameter below 200 nm. X-ray diffraction pattern shows that the sample contains the alloy phase of Ni 3 Sn 4 , Ni 2 Sn 2 and Ni 3 Sn, element phase of Ni and Sn, and compound phase SnO 2 . The charge/discharge test shows that the alloy shows a reversible capacity of 571.1mAh/g with capacity retention of 78.6% after 20 charge-discharge cycles. The improved performance was ascribed to the lower particle size, the higher contents of alloy phase, the binder styrene butadiene rubber to buffer the expansion of the alloy and the improved electric contact between active material and copper current collector.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
金属合金
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2017
·Vol. 1
·期 9
·1944-1949
·
IF 0
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Yuning Li,Yuezhong Meng
Tin phosphide (Sn4P3) combined with the good conductivity of tin (Sn) and high capacity of phosphorus has been reported to be a potential anode material for the sodium ion battery (SIB). However, the preparation of Sn4P3 is limited to ball-milling and compositing with carbon materials. The novel and detailed structure of Sn4P3 itself has so far not been revealed. In this research, the multi-shell Sn4P3 nano-structure was obtained, for the first time, using a simple and general low temperature solvothermal method. The multi-shell structure with a larger specific surface area and interlayer space endows this new anode material with a short cut pathway for sodium ion diffusion and a buffer space for volume expansion during sodiation, thus avoiding electrode pulverization and improving the cycling performance of the SIB. The as-prepared multi-shell Sn4P3 delivers an excellent specific capacity of 770 mAh g−1 with capacity retention of 96% after 50 cycles at the current density of 50 mA g−1, demonstrating the superiority of structure optimization in SIB anode preparation.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
✓ 已验证
DOI
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Lingyan Wang,Linhai Zhuo,Yancun Yu,Fengyu Zhao
Two-dimensional (2D) SnS 2 nanoplates were synthesized through a facile hydrothermal method . The influences of reaction conditions such as temperature and pH on the size, crystallinity and the forming process of SnS 2 were investigated in detail. At low temperature (160 °C), the SnS 2 nanoplates showed poor crystallinity; while at higher temperatures above 200 °C, the crystallinity and thickness of the SnS 2 nanoplates tended to increase. In addition, pH had notable impact on the nucleation velocity of SnO 2 and the conversion speed from SnO 2 to SnS 2 in further as well. When used as anode materials in rechargeable lithium ion batteries , the SnS 2 nanoplates synthesized at 200 °C and pH = 10.5 (SnS 2 -200-10.5) showed the best lithium storage capacity, good cycling stability and excellent rate capability. It retained a high reversible capacity of 521 mA h g −1 over 50 cycles at a current of 100 mA g −1 , equal to 90.0% of the initial reversible capacity. In addition, the coulombic efficiency increased from 36% in the first cycle to over 97% in the subsequent cycles. Even at high current densities of 1, 2 and 3 A g −1 , the electrodes could still delivery as high as 472, 397 and 340 mA h g −1 , respectively. The enhanced electrochemical performance of the SnS 2 -200-10.5 can be attributed to the compact and regular crystal structure with a moderate thickness and crystallinity, which is beneficial for maintaining the stability of the structure and fast ion transport during lithiation/delithiation processes.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机功能材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2013
·Vol. 3
·期 43
·20422-20428
·
IF 2.562
Shendong Zhuang,Xiaoyong Xu,Yaru Pang,Jingguo Hu,Chi Yang,Ling Tong,Yuxue Zhou
The ultrafine SnO2 quantum dots (QDs) modified with poly(ethylene glycol methyl ether) (PEGME) (PEGME–SnO2 QDs) were synthesized via hydrothermal method. X-ray diffraction and high-resolution transmission electron microscopy were employed to illustrate that the PEGME–SnO2 QDs are uniform, monodispersed and about 4 nm in diameter. Then infrared spectrum and thermogravimetric analysis were used to prove that PEGME groups are bound tightly to SnO2 surfaces. The as-synthesized PEGME–SnO2 QDs excellently achieved photocatalytic degradation to Rhodamine B dye (RhB). The photon efficiency of the PEGME–SnO2 QDs catalyst and corresponding RhB dye degradation rate constant could reach 0.0058% and 9.98 × 10−2 min−1, respectively. This outstanding photocatalytic performance could be attributed to not only large surface-to-volume ratio and high crystallinity of the ultrafine and monodispersed QDs, but also good hydrophilicity and conductivity of the PEGME surface modifier. Remarkably, such PEGME–SnO2 QDs with outstanding photocatalytic efficiency and stable recyclability are promising to be applied to environmental purification.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光催化
·
表面化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 25
·10539-10554
·
IF 4.5
Wei Yinsha,Haider Zeeshan,Yu Yizhen,Li Bingzhi,Niu Haili,Qiu Ri,Ouyang Yibo,Liu Jie
Printed circuit boards (PCB) are easily corroded under moist environment due to formation of dendrites and short circuit. It would be a promising approach to exploit intentionally formed dendrite covered by functional coating for corrosion inhibition to elongate the lifespan of PCB. In this work, a facile electrodeposition method has been applied to grow dendritic tin onto Cu as a substrate for PCB. Bioinspired formation of superhydrophobic surface (SHS) and liquid-infused surface (LIS) are adopted to minimize access of moisture to underneath Cu metal. In this regard, dimethylsilicone oil and zeolitic imidazolate framework (ZIF) nanoparticles are infused into dendritic matrix to form a solid–liquid ZIF-LIS coating. Morphology, composition and wettability are characterized by different sophisticated techniques. Beyond significant improvement in corrosion resistance, ZIF-LIS has demonstrated self-healing properties, improved mechanical stability and anti-icing behavior. Current finding provides a new approach to fabricate coating for PCB having extended stability against corrosive degradation.
Graphical abstract
研究领域:
材料科学
·
表面工程
·
电化学
·
纳米技术
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Manhong Liu,Qiang Bai,Hailian Xiao,Yanyan Liu,Jun Zhao,William W. Yu
Colloidal platinum–ruthenium bimetallic nanoparticles with 2.3 nm were synthesized in solution and then immobilized on tin dioxide powder to make a supported nanocatalyst (Pt–Ru/SnO 2 ). The immobilized bimetallic nanoparticles had the same size and size distribution as the solution dispersed ones. Selective hydrogenation of o -chloronitrobenzene to o -chloroaniline was performed over the as-prepared Pt–Ru/SnO 2 nanocatalyst without using any solvent; 99.5% selectivity to o -chloroaniline at ∼100% conversion was achieved.
研究领域:
催化化学
·
纳米材料
·
有机合成
·
绿色化学
·
应用化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）